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Straková P, Bednář P, Kotouček J, Holoubek J, Fořtová A, Svoboda P, Štefánik M, Huvarová I, Šimečková P, Mašek J, Gvozdev DA, Mikhnovets IE, Chistov AA, Nikitin TD, Krasilnikov MS, Ustinov AV, Alferova VA, Korshun VA, Růžek D, Eyer L. Antiviral activity of singlet oxygen-photogenerating perylene compounds against SARS-CoV-2: Interaction with the viral envelope and photodynamic virion inactivation. Virus Res 2023; 334:199158. [PMID: 37339718 PMCID: PMC10307035 DOI: 10.1016/j.virusres.2023.199158] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 06/09/2023] [Accepted: 06/18/2023] [Indexed: 06/22/2023]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has prompted great interest in novel broad-spectrum antivirals, including perylene-related compounds. In the present study, we performed a structure-activity relationship analysis of a series of perylene derivatives, which comprised a large planar perylene residue, and structurally divergent polar groups connected to the perylene core by a rigid ethynyl or thiophene linker. Most of the tested compounds did not exhibit significant cytotoxicity towards multiple cell types susceptible to SARS-CoV-2 infection, and did not change the expressions of cellular stress-related genes under normal light conditions. These compounds showed nanomolar or sub-micromolar dose-dependent anti-SARS-CoV-2 activity, and also suppressed the in vitro replication of feline coronavirus (FCoV), also termed feline infectious peritonitis virus (FIPV). Perylene compounds exhibited high affinity for liposomal and cellular membranes, and efficiently intercalated into the envelopes of SARS-CoV-2 virions, thereby blocking the viral-cell fusion machinery. Furthermore, the studied compounds were demonstrated to be potent photosensitizers, generating reactive oxygen species (ROS), and their anti-SARS-CoV-2 activities were considerably enhanced after irradiation with blue light. Our results indicated that photosensitization is the major mechanism underlying the anti-SARS-CoV-2 activity of perylene derivatives, with these compounds completely losing their antiviral potency under red light. Overall, perylene-based compounds are broad-spectrum antivirals against multiple enveloped viruses, with antiviral action based on light-induced photochemical damage (ROS-mediated, likely singlet oxygen-mediated), causing impairment of viral membrane rheology.
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Affiliation(s)
- Petra Straková
- Laboratory of Emerging Viral Diseases, Veterinary Research Institute, CZ-621 00 Brno, Czech Republic; Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, CZ-370 05 České Budějovice, Czech Republic; Department of Experimental Biology, Faculty of Science, Masaryk University, CZ-62500 Brno, Czech Republic
| | - Petr Bednář
- Laboratory of Emerging Viral Diseases, Veterinary Research Institute, CZ-621 00 Brno, Czech Republic; Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, CZ-370 05 České Budějovice, Czech Republic; Department of Experimental Biology, Faculty of Science, Masaryk University, CZ-62500 Brno, Czech Republic; Faculty of Science, University of South Bohemia, Ceske Budejovice, CZ-37005, Czech Republic
| | - Jan Kotouček
- Department of Pharmacology and Toxicology, Veterinary Research Institute, CZ-621 00 Brno, Czech Republic
| | - Jiří Holoubek
- Laboratory of Emerging Viral Diseases, Veterinary Research Institute, CZ-621 00 Brno, Czech Republic; Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, CZ-370 05 České Budějovice, Czech Republic; Department of Experimental Biology, Faculty of Science, Masaryk University, CZ-62500 Brno, Czech Republic
| | - Andrea Fořtová
- Laboratory of Emerging Viral Diseases, Veterinary Research Institute, CZ-621 00 Brno, Czech Republic; Department of Experimental Biology, Faculty of Science, Masaryk University, CZ-62500 Brno, Czech Republic
| | - Pavel Svoboda
- Laboratory of Emerging Viral Diseases, Veterinary Research Institute, CZ-621 00 Brno, Czech Republic; Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, CZ-370 05 České Budějovice, Czech Republic; Department of Experimental Biology, Faculty of Science, Masaryk University, CZ-62500 Brno, Czech Republic; Department of Pharmacology and Pharmacy, Faculty of Veterinary Medicine, University of Veterinary Sciences Brno, CZ-612 42 Brno, Czech Republic
| | - Michal Štefánik
- Department of Chemistry and Biochemistry, Mendel University in Brno, CZ-61300 Brno, Czech Republic
| | - Ivana Huvarová
- Laboratory of Emerging Viral Diseases, Veterinary Research Institute, CZ-621 00 Brno, Czech Republic
| | - Pavlína Šimečková
- Department of Pharmacology and Toxicology, Veterinary Research Institute, CZ-621 00 Brno, Czech Republic
| | - Josef Mašek
- Department of Pharmacology and Toxicology, Veterinary Research Institute, CZ-621 00 Brno, Czech Republic
| | - Daniil A Gvozdev
- Department of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Igor E Mikhnovets
- Department of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, 117997, Russia
| | - Alexey A Chistov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, 117997, Russia
| | - Timofei D Nikitin
- Department of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, 117997, Russia
| | - Maxim S Krasilnikov
- Department of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, 117997, Russia
| | - Alexey V Ustinov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, 117997, Russia
| | - Vera A Alferova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, 117997, Russia
| | - Vladimir A Korshun
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, 117997, Russia
| | - Daniel Růžek
- Laboratory of Emerging Viral Diseases, Veterinary Research Institute, CZ-621 00 Brno, Czech Republic; Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, CZ-370 05 České Budějovice, Czech Republic; Department of Experimental Biology, Faculty of Science, Masaryk University, CZ-62500 Brno, Czech Republic
| | - Luděk Eyer
- Laboratory of Emerging Viral Diseases, Veterinary Research Institute, CZ-621 00 Brno, Czech Republic; Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, CZ-370 05 České Budějovice, Czech Republic; Department of Experimental Biology, Faculty of Science, Masaryk University, CZ-62500 Brno, Czech Republic.
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2
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Hernández Bustos A, Martiny E, Bom Pedersen N, Parvathaneni RP, Hansen J, Ji HP, Astakhova K. Short Tandem Repeat DNA Profiling Using Perylene-Oligonucleotide Fluorescence Assay. Anal Chem 2023; 95:7872-7879. [PMID: 37183373 DOI: 10.1021/acs.analchem.3c00063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
We report an amplification-free genotyping method to determine the number of human short tandem repeats (STRs). DNA-based STR profiling is a robust method for genetic identification purposes such as forensics and biobanking and for identifying specific molecular subtypes of cancer. STR detection requires polymerase amplification, which introduces errors that obscure the correct genotype. We developed a new method that requires no polymerase. First, we synthesized perylene-nucleoside reagents and incorporated them into oligonucleotide probes that recognize five common human STRs. Using these probes and a bead-based hybridization approach, accurate STR detection was achieved in only 1.5 h, including DNA preparation steps, with up to a 1000-fold target DNA enrichment. This method was comparable to PCR-based assays. Using standard fluorometry, the limit of detection was 2.00 ± 0.07 pM for a given target. We used this assay to accurately identify STRs from 50 human subjects, achieving >98% consensus with sequencing data for STR genotyping.
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Affiliation(s)
- Adrián Hernández Bustos
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby, Region Hovedstaden 2800, Denmark
| | - Elisa Martiny
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby, Region Hovedstaden 2800, Denmark
| | - Nadia Bom Pedersen
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby, Region Hovedstaden 2800, Denmark
| | - Rohith Pavan Parvathaneni
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby, Region Hovedstaden 2800, Denmark
| | - Jonas Hansen
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby, Region Hovedstaden 2800, Denmark
- School of Medicine, Stanford University, 94305 Stanford, California, United States
| | - Hanlee P Ji
- School of Medicine, Stanford University, 94305 Stanford, California, United States
| | - Kira Astakhova
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby, Region Hovedstaden 2800, Denmark
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3
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2'-N-Alkylaminocarbonyl-2'-amino-LNA: Synthesis, duplex stability, nuclease resistance, and in vitro anti-microRNA activity. Bioorg Med Chem 2023; 78:117148. [PMID: 36580743 DOI: 10.1016/j.bmc.2022.117148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 12/20/2022] [Accepted: 12/22/2022] [Indexed: 12/25/2022]
Abstract
2'-Amino-LNA has the potential to acquire various functions through chemical modification at the 2'-nitrogen atom. This study focused on 2'-N-alkylaminocarbonyl 2'-amino-LNA, which is a derivative of 2'-amino-LNA. We evaluated its practical usefulness as a chemical modification of anti-miRNA oligonucleotide. The synthesis of phosphoramidites of 2'-N-alkylaminocarbonyl substituted 2'-amino-LNA bearing thymine and 5-methylcytosine proceeded in good yields. Incorporating the 2'-N-alkylaminocarbonyl-2'-amino-LNA monomers into oligonucleotides improved the duplex stability for complementary RNA strands and robust nuclease resistance. Moreover, 2'-N-alkylaminocarbonyl-2'-amino-LNA is a promising scaffold that significantly increases the potency of anti-miRNA oligonucleotides.
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4
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Takegawa-Araki T, Yasukawa K, Iwazaki N, Maruyama H, Furukawa H, Sawamoto H, Obika S. Parallel synthesis of oligonucleotides containing N-acyl amino-LNA and their therapeutic effects as anti-microRNAs. Org Biomol Chem 2022; 20:9351-9361. [PMID: 36383101 DOI: 10.1039/d2ob01809h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
2'-Amino-locked nucleic acid (ALNA), maintains excellent duplex stability, and the nitrogen at the 2'-position is an attractive scaffold for functionalization. Herein, a facile and efficient method for the synthesis of various 2'-N-acyl amino-LNA derivatives by direct acylation of the 2'-amino moiety contained in the synthesized oligonucleotides and its fundamental properties are described. The introduction of the acylated amino-LNA enhances the potency of the molecules as therapeutic anti-microRNA oligonucleotides.
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Affiliation(s)
- Tomo Takegawa-Araki
- Soyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, 2-26-1, Muraoka-Higashi, Fujisawa, Kanagawa, 251-8555, Japan
| | - Kai Yasukawa
- Soyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, 2-26-1, Muraoka-Higashi, Fujisawa, Kanagawa, 251-8555, Japan
| | - Norihiko Iwazaki
- Soyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, 2-26-1, Muraoka-Higashi, Fujisawa, Kanagawa, 251-8555, Japan
| | - Hideto Maruyama
- Soyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, 2-26-1, Muraoka-Higashi, Fujisawa, Kanagawa, 251-8555, Japan
| | - Hiroyuki Furukawa
- Soyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, 2-26-1, Muraoka-Higashi, Fujisawa, Kanagawa, 251-8555, Japan
| | - Hiroaki Sawamoto
- Soyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, 2-26-1, Muraoka-Higashi, Fujisawa, Kanagawa, 251-8555, Japan
| | - Satoshi Obika
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan.
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5
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Gouda AS, Przypis Ł, Walczak K, Jørgensen PT, Wengel J. Carbazole modified oligonucleotides: synthesis, hybridization studies and fluorescence properties. Org Biomol Chem 2020; 18:6935-6948. [PMID: 32936176 DOI: 10.1039/d0ob01553a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Synthesis of the novel thiophenyl carbazole phosphoramidite DNA building block 5 was accomplished in four steps using a Suzuki-Miyaura cross-coupling reaction from the core carbazole and it was seamlessly accommodated into a 9-mer DNA-based oligonucleotide by incorporation at the flanking 5'-end in combination with a central insertion of an LNA-T nucleotide. The carbazole-containing oligonucleotide was combined in different duplex hybrids, which were characterized by thermal denaturation, circular dichroism and fluorescence studies. The carbazole monomer modulates the duplex stability in various ways. Thus, monomer Z increased the thermal stability of the 9-mer towards the complementary 9-mer/15-mer DNA duplex by 4.2 °C. Furthermore, indications of its intercalation into the duplex were obtained by modeling studies and robust decreases in fluorescence emission intensities upon duplex formation. In contrast, no clear intercalating tendency was corroborated for monomer Z within the DNA/RNA hybrid duplex as indicated by moderate quenching of the fluorescence and similar duplex thermal stabilities relative to the corresponding control duplex. The recognition efficiencies of the carbazole modified oligonucleotide toward single nucleotide mismatches were studied with two 15-mer model targets (DNA and RNA). For both systems, mismatches positioned at the juxtaposition of the carbazole monomer showed pronounced deceases in thermal denaturation temperature. Steady-state fluorescence emission studies of all mismatched duplexes with incorporation of Z monomer typically displayed efficient fluorescence quenching.
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Affiliation(s)
- Alaa S Gouda
- Biomolecular Nanoscale Engineering Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
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6
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Slesarchuk NA, Khvatov EV, Chistov AA, Proskurin GV, Nikitin TD, Lazarevich AI, Ulanovskaya AA, Ulashchik EA, Orlov AA, Jegorov AV, Ustinov AV, Tyurin AP, Shmanai VV, Ishmukhametov AA, Korshun VA, Osolodkin DI, Kozlovskaya LI, Aralov AV. Simplistic perylene-related compounds as inhibitors of tick-borne encephalitis virus reproduction. Bioorg Med Chem Lett 2020; 30:127100. [PMID: 32199731 DOI: 10.1016/j.bmcl.2020.127100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 02/28/2020] [Accepted: 03/07/2020] [Indexed: 12/12/2022]
Abstract
Rigid amphipathic fusion inhibitors are potent broad-spectrum antivirals based on the perylene scaffold, usually decorated with a hydrophilic group linked via ethynyl or triazole. We have sequentially simplified these structures by removing sugar moiety, then converting uridine to aniline, then moving to perylenylthiophenecarboxylic acids and to perylenylcarboxylic acid. All these polyaromatic compounds, as well as antibiotic heliomycin, still showed pronounced activity against tick-borne encephalitis virus (TBEV) with limited toxicity in porcine embryo kidney (PEK) cell line. 5-(Perylen-3-yl)-2-thiophenecarboxylic acid (5a) showed the highest antiviral activity with 50% effective concentration of approx. 1.6 nM.
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Affiliation(s)
- Nikita A Slesarchuk
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow 117997, Russia; Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia; Department of Biology and Biotechnology, National Research University Higher School of Economics, Moscow 117312, Russia
| | - Evgeny V Khvatov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow 117997, Russia; FSBSI «Chumakov FSC R&D IBP RAS», Moscow 108819, Russia
| | - Alexey A Chistov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow 117997, Russia; Department of Biology and Biotechnology, National Research University Higher School of Economics, Moscow 117312, Russia
| | - Gleb V Proskurin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow 117997, Russia
| | - Timofei D Nikitin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow 117997, Russia; Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Anastasiya I Lazarevich
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow 117997, Russia; Mendeleev University of Chemical Technology, Moscow 125047, Russia
| | - Angelina A Ulanovskaya
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow 117997, Russia; Mendeleev University of Chemical Technology, Moscow 125047, Russia
| | | | | | - Artjom V Jegorov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow 117997, Russia
| | - Alexey V Ustinov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow 117997, Russia; Department of Biology and Biotechnology, National Research University Higher School of Economics, Moscow 117312, Russia.
| | - Anton P Tyurin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow 117997, Russia; Department of Biology and Biotechnology, National Research University Higher School of Economics, Moscow 117312, Russia; Gause Institute of New Antibiotics, Moscow 119021, Russia
| | - Vadim V Shmanai
- Institute of Physico-Organic Chemistry, Minsk 220072, Belarus
| | - Aydar A Ishmukhametov
- FSBSI «Chumakov FSC R&D IBP RAS», Moscow 108819, Russia; Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow 119991, Russia
| | - Vladimir A Korshun
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow 117997, Russia; Department of Biology and Biotechnology, National Research University Higher School of Economics, Moscow 117312, Russia; Gause Institute of New Antibiotics, Moscow 119021, Russia
| | - Dmitry I Osolodkin
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia; FSBSI «Chumakov FSC R&D IBP RAS», Moscow 108819, Russia; Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow 119991, Russia.
| | - Liubov I Kozlovskaya
- FSBSI «Chumakov FSC R&D IBP RAS», Moscow 108819, Russia; Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow 119991, Russia
| | - Andrey V Aralov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow 117997, Russia
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7
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Solid-Phase Hybridization Assay for Detection of Mutated Cancer DNA by Fluorescence. Methods Mol Biol 2020; 2063:37-44. [PMID: 31667761 DOI: 10.1007/978-1-0716-0138-9_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We report a straightforward protocol for the detection of mutated DNA extracted from cancer cells. The assay combines a step-wise solid-phase hybridization and a readout by fluorescence emission. We detect a single-nucleotide polymorphism in two human oncogenes, BRAF and EGFR, and reach a limit of the detection of 300 pM by conventional fluorometry. The protocol described herein may be used as a foundation for development of automatic optimized assays capable for detection of mutant DNA and RNA in vitro and in cells.
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8
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Taskova M, Astakhova K. Fluorescent Oligonucleotides with Bis(prop-2-yn-1-yloxy)butane-1,3-diol Scaffold Rapidly Detect Disease-Associated Nucleic Acids. Bioconjug Chem 2019; 30:3007-3012. [DOI: 10.1021/acs.bioconjchem.9b00746] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Maria Taskova
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, 2800 Kgs. Lyngby, Denmark
| | - Kira Astakhova
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, 2800 Kgs. Lyngby, Denmark
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9
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Hari Y, Osawa T, Yamashita S, Nakanishi A, Ito Y. Synthesis and Hybridization Properties of Oligonucleotides Including 2’-N-Alkoxycarbonyl-2’-amino-LNA Derivatives. HETEROCYCLES 2019. [DOI: 10.3987/com-18-s(f)46] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Piras L, Avitabile C, D'Andrea LD, Saviano M, Romanelli A. Detection of oligonucleotides by PNA-peptide conjugates recognizing the biarsenical fluorescein complex FlAsH-EDT 2. Biochem Biophys Res Commun 2017; 493:126-131. [PMID: 28919425 DOI: 10.1016/j.bbrc.2017.09.064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 09/13/2017] [Indexed: 12/31/2022]
Abstract
We report the application of the arsenical complex FlAsH-EDT2 for the identification of oligonucleotide sequences. We designed PNA sequences conjugated to either a tetracysteine motif and to split tetracysteine sequences, that are recognized by FlAsH. The effect of conjugation of the PNA to the tetracysteine peptide and RNA hybridization on the fluorescence of the arsenical complex has been investigated. The reconstitution of the tetracysteine motif, starting from 15-mer PNAs conjugated to split tetracysteine sequences and hybridized to a complementary oligonucleotide was also explored.
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Affiliation(s)
- Linda Piras
- Institute of Crystallography (IC), CNR, Via Amendola 122/O, 70126, Bari, Italy
| | - Concetta Avitabile
- Institute of Biostructures and Bioimaging (IBB), CNR, via Mezzocannone 16, 80134, Napoli, Italy
| | - Luca Domenico D'Andrea
- Institute of Biostructures and Bioimaging (IBB), CNR, via Mezzocannone 16, 80134, Napoli, Italy
| | - Michele Saviano
- Institute of Crystallography (IC), CNR, Via Amendola 122/O, 70126, Bari, Italy
| | - Alessandra Romanelli
- Department of Pharmacy, University of Naples "Federico II", via Mezzocannone 16, 80134, Napoli, Italy.
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11
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Oligodeoxynucleotides containing 2'-amino-LNA nucleotides as constrained morpholino phosphoramidate and phosphorodiamidate monomers. Bioorg Med Chem Lett 2017; 27:3173-3176. [PMID: 28552336 DOI: 10.1016/j.bmcl.2017.05.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 05/05/2017] [Accepted: 05/07/2017] [Indexed: 11/23/2022]
Abstract
Incorporation in a 2'→5' direction of a phosphorodiamidite 2'-amino-LNA-T nucleotide as the morpholino phosphoramidate and N,N-dimethylamino phosphorodiamidate monomers into six oligonucleotides is reported. Thermal denaturation studies showed that the novel 2'-amino-LNA-based morpholino monomers exert a destabilizing effects on duplexes formed with complementary DNA and RNA.
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12
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Kashida H, Morimoto K, Asanuma H. A stem-less probe using spontaneous pairing between Cy3 and quencher for RNA detection. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2016; 17:267-273. [PMID: 27877879 PMCID: PMC5101869 DOI: 10.1080/14686996.2016.1182412] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 03/30/2016] [Accepted: 04/05/2016] [Indexed: 05/26/2023]
Abstract
We herein report a stem-less probe for the detection of RNA that depends on pairing between Cy3 and nitro methyl red. In our design, two Cy3 residues and two nitro methyl red residues were introduced into an oligonucleotide. In the absence of the target, these dyes formed a complex, and emission of Cy3 was efficiently quenched. Hybridization with the target RNA disrupted this interaction and resulted in Cy3 emission. Under optimized conditions, the signal to background ratio was as high as 180. We demonstrated specific detection of target RNA in cells using a wash-free FISH protocol.
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Affiliation(s)
- Hiromu Kashida
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8603, Japan
- Japan Science and Technology Agency, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama332-0012, Japan
| | - Kazuhiro Morimoto
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8603, Japan
| | - Hiroyuki Asanuma
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8603, Japan
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13
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Novel Signal-Enhancing Approaches for Optical Detection of Nucleic Acids—Going beyond Target Amplification. CHEMOSENSORS 2015. [DOI: 10.3390/chemosensors3030224] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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14
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Anderson BA, Onley JJ, Hrdlicka PJ. Recognition of Double-Stranded DNA Using Energetically Activated Duplexes Modified with N2'-Pyrene-, Perylene-, or Coronene-Functionalized 2'-N-Methyl-2'-amino-DNA Monomers. J Org Chem 2015; 80:5395-406. [PMID: 25984765 DOI: 10.1021/acs.joc.5b00742] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Invader probes have been proposed as alternatives to polyamides, triplex-forming oligonucleotides, and peptide nucleic acids for recognition of chromosomal DNA targets. These double-stranded probes are activated for DNA recognition by +1 interstrand zippers of pyrene-functionalized nucleotides. This particular motif forces the intercalating pyrene moieties into the same region, resulting in perturbation and destabilization of the probe duplex. In contrast, the two probe strands display very high affinity toward complementary DNA. The energy difference between the probe duplexes and recognition complexes provides the driving force for DNA recognition. In the present study, we explore the properties of Invader probes based on larger intercalators, i.e., perylene and coronene, expecting that the larger π-surface area will result in additional destabilization of the probe duplex and further stabilization of probe-target duplexes, in effect increasing the thermodynamic driving force for DNA recognition. Toward this end, we developed protocols for 2'-N-methyl-2'-amino-2'-deoxyuridine phosphoramidites that are functionalized at the N2'-position with pyrene, perylene, or coronene moieties and incorporated these monomers into oligodeoxyribonucleotides (ONs). The resulting ONs and Invader probes are characterized by thermal denaturation experiments, analysis of thermodynamic parameters, absorption and fluorescence spectroscopy, and DNA recognition experiments. Invader probes based on large intercalators efficiently recognize model targets.
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Affiliation(s)
- Brooke A Anderson
- †Department of Chemistry, University of Idaho, Moscow, Idaho 83844, United States
| | - Jared J Onley
- †Department of Chemistry, University of Idaho, Moscow, Idaho 83844, United States.,‡Department of Chemistry, Whitworth University, Spokane, Washington 99251, United States
| | - Patrick J Hrdlicka
- †Department of Chemistry, University of Idaho, Moscow, Idaho 83844, United States
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15
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Asanuma H, Akahane M, Niwa R, Kashida H, Kamiya Y. Highly Sensitive and Robust Linear Probe for Detection of mRNA in Cells. Angew Chem Int Ed Engl 2015; 54:4315-9. [DOI: 10.1002/anie.201411000] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 12/22/2014] [Indexed: 12/16/2022]
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16
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Asanuma H, Akahane M, Niwa R, Kashida H, Kamiya Y. Highly Sensitive and Robust Linear Probe for Detection of mRNA in Cells. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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17
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Gladkovskaya O, Gerard VA, Nosov M, Gun'ko YK, O'Connor GM, Rochev Y. The interaction of QDs with RAW264.7 cells: nanoparticle quantification, uptake kinetics and immune responses study. RSC Adv 2015. [DOI: 10.1039/c5ra04233j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Exposure to small QDs in high concentration in continuous cell culture results in cell death by apoptosis and necrosis co-existing within the same cell population.
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Affiliation(s)
- O. Gladkovskaya
- School of Physics
- National University of Ireland
- Galway
- Ireland
- Network of Excellence for Functional Biomaterials
| | - V. A. Gerard
- CRANN and School of Chemistry
- Trinity College Dublin
- Ireland
| | - M. Nosov
- FarmLab Diagnostics
- Elphin
- Ireland
| | - Y. K. Gun'ko
- CRANN and School of Chemistry
- Trinity College Dublin
- Ireland
- ITMO University
- 197101 Saint Petersburg
| | - G. M. O'Connor
- School of Physics
- National University of Ireland
- Galway
- Ireland
| | - Y. Rochev
- Network of Excellence for Functional Biomaterials
- Galway
- Ireland
- School of Chemistry
- National University of Ireland
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18
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Asanuma H, Kashida H, Kamiya Y. De novo design of functional oligonucleotides with acyclic scaffolds. CHEM REC 2014; 14:1055-69. [PMID: 25171046 DOI: 10.1002/tcr.201402040] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Indexed: 01/20/2023]
Abstract
In this account, we demonstrate a new methodology for the de novo design of functional oligonucleotides with the acyclic scaffolds threoninol and serinol. Four functional motifs-wedge, interstrand-wedge, dimer, and cluster-have been prepared from natural DNA or RNA and functional base surrogates prepared from d-threoninol. The following applications of these motifs are described: (1) photoregulation of formation and dissociation of a DNA duplex modified with azobenzene, (2) sequence-specific detection of DNA using a fluorescent probe, (3) formation of fluorophore assemblies that mimic quantum dots, (4) improved strand selectivity of siRNA modified with a base surrogate, and (5) in vivo tracing of the RNAi pathway. Finally, we introduce artificial nucleic acids (XNAs) prepared from d-threoninol and serinol functionalized with each of the four nucleobases, which have unique properties compared with other acyclic XNAs. Functional oligonucleotides designed from acyclic scaffolds will be powerful tools for both DNA nanotechnology and biotechnology.
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Affiliation(s)
- Hiroyuki Asanuma
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
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19
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Astakhova IK, Wengel J. Scaffolding along nucleic acid duplexes using 2'-amino-locked nucleic acids. Acc Chem Res 2014; 47:1768-77. [PMID: 24749544 DOI: 10.1021/ar500014g] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
CONSPECTUS: Incorporation of chemically modified nucleotide scaffolds into nucleic acids to form assemblies rich in function is an innovative area with great promise for nanotechnology and biomedical and material science applications. The intrinsic biorecognition potential of nucleic acids combined with advanced properties of the locked nucleic acids (LNAs) provide opportunities to develop new nanomaterials and devices like sensors, aptamers, and machines. In this Account, we describe recent research on preparation and investigation of the properties of LNA/DNA hybrids containing functionalized 2'-amino-LNA nucleotides. By application of different chemical reactions, modification of 2'-amino-LNA scaffolds can be efficiently performed in high yields and with various tags, postsynthetically or during the automated oligonucleotide synthesis. The choice of a synthetic method for scaffolding along 2'-amino-LNA mainly depends on the chemical nature of the modification, its price, its availability, and applications of the product. One of the most useful applications of the product LNA/DNA scaffolds containing 2'-amino-LNA is to detect complementary DNA and RNA targets. Examples of these applications include sensing of clinically important single-nucleotide polymorphisms (SNPs) and imaging of nucleic acids in vitro, in cell culture, and in vivo. According to our studies, 2'-amino-LNA scaffolds are efficient within diagnostic probes for DNA and RNA targets and as therapeutics, whereas both 2'-amino- and isomeric 2'-α-l-amino-LNA scaffolds have promising properties for stabilization and detection of DNA nanostructures. Attachment of fluorescent groups to the 2'-amino group results in very high fluorescent quantum yields of the duplexes and remarkable sensitivity of the fluorescence signal to target binding. Notably, fluorescent LNA/DNA probes bind nucleic acid targets with advantages of high affinity and specificity. Thus, molecular motion of nanodevices and programmable self-assembly of chemically modified LNA/DNA nanomaterials can be followed by bright fluorescence signaling from the functionalized LNA units. Another appealing aspect of the amino-LNA scaffolds is specific targeting of nucleic acids and proteins for therapeutic applications. 2'-Amino-LNA/DNA conjugates containing peptide and polyaromatic hydrocarbon (PAH) groups are promising in this context as well as for advanced imaging and diagnostic purposes in vivo. For imaging applications, photostability of fluorescence dyes is of crucial importance. Chemically stable and photostable fluorescent PAH molecules attached to 2'-amino functionality of the 2'-amino-LNA are potent for in vitro and in vivo imaging of DNA and RNA targets. We believe that rational evolution of the biopolymers of Nature may solve the major challenges of the future material science and biomedicine. However, this requires strong scientific progress and efficient interdisciplinary research. Examples of this Account demonstrate that among other synthetic biopolymers, synthetic nucleic acids containing functionalized 2'-amino-LNA scaffolds offer great opportunities for material science, diagnostics, and medicine of the future.
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Affiliation(s)
- I. Kira Astakhova
- Nucleic Acid Center,
Department
of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Jesper Wengel
- Nucleic Acid Center,
Department
of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
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20
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Hu H, Liu S, Li D, Wang M, Moats R, Shan H, Conti PS, Li Z. The synthesis of lanthanide-doped GdVO4ultrathin nanosheets with great optical and paramagnetic properties for FRET biodetection and in vivo MR imaging. J Mater Chem B 2014; 2:3998-4007. [DOI: 10.1039/c4tb00144c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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21
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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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22
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Boutorine AS, Novopashina DS, Krasheninina OA, Nozeret K, Venyaminova AG. Fluorescent probes for nucleic Acid visualization in fixed and live cells. Molecules 2013; 18:15357-97. [PMID: 24335616 PMCID: PMC6270009 DOI: 10.3390/molecules181215357] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 11/20/2013] [Accepted: 12/05/2013] [Indexed: 12/13/2022] Open
Abstract
This review analyses the literature concerning non-fluorescent and fluorescent probes for nucleic acid imaging in fixed and living cells from the point of view of their suitability for imaging intracellular native RNA and DNA. Attention is mainly paid to fluorescent probes for fluorescence microscopy imaging. Requirements for the target-binding part and the fluorophore making up the probe are formulated. In the case of native double-stranded DNA, structure-specific and sequence-specific probes are discussed. Among the latest, three classes of dsDNA-targeting molecules are described: (i) sequence-specific peptides and proteins; (ii) triplex-forming oligonucleotides and (iii) polyamide oligo(N-methylpyrrole/N-methylimidazole) minor groove binders. Polyamides seem to be the most promising targeting agents for fluorescent probe design, however, some technical problems remain to be solved, such as the relatively low sequence specificity and the high background fluorescence inside the cells. Several examples of fluorescent probe applications for DNA imaging in fixed and living cells are cited. In the case of intracellular RNA, only modified oligonucleotides can provide such sequence-specific imaging. Several approaches for designing fluorescent probes are considered: linear fluorescent probes based on modified oligonucleotide analogs, molecular beacons, binary fluorescent probes and template-directed reactions with fluorescence probe formation, FRET donor-acceptor pairs, pyrene excimers, aptamers and others. The suitability of all these methods for living cell applications is discussed.
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Affiliation(s)
- Alexandre S. Boutorine
- Muséum National d’Histoire Naturelle, CNRS, UMR 7196, INSERM, U565, 57 rue Cuvier, B.P. 26, Paris Cedex 05, F-75231, France; E-Mail:
| | - Darya S. Novopashina
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of Russian Academy of Sciences, Lavrentyev Ave., 8, Novosibirsk 630090, Russia; E-Mails: (D.S.N.); (O.A.K.); (A.G.V.)
| | - Olga A. Krasheninina
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of Russian Academy of Sciences, Lavrentyev Ave., 8, Novosibirsk 630090, Russia; E-Mails: (D.S.N.); (O.A.K.); (A.G.V.)
- Department of Natural Sciences, Novosibirsk State University, Pirogova Str., 2, Novosibirsk 630090, Russia
| | - Karine Nozeret
- Muséum National d’Histoire Naturelle, CNRS, UMR 7196, INSERM, U565, 57 rue Cuvier, B.P. 26, Paris Cedex 05, F-75231, France; E-Mail:
| | - Alya G. Venyaminova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of Russian Academy of Sciences, Lavrentyev Ave., 8, Novosibirsk 630090, Russia; E-Mails: (D.S.N.); (O.A.K.); (A.G.V.)
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23
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Kumar TS, Myznikova A, Samokhina E, Astakhova IK. Rapid genotyping using pyrene-perylene locked nucleic acid complexes. ARTIFICIAL DNA, PNA & XNA 2013; 4:58-68. [PMID: 24044052 PMCID: PMC3771999 DOI: 10.4161/adna.25903] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 07/07/2013] [Accepted: 07/25/2013] [Indexed: 01/27/2023]
Abstract
We have developed an assay for single strand DNA and RNA detection which is based on novel pyrene-perylene FRET pairs attached to short LNA/DNA probes. The assay is based on ratiometric emission upon binding of target DNA/RNA by three combinations of fluorescent LNA/DNA reporter strands. Specific geometry of the pyrene fluorophore attached to the 2'-amino group of 2'-amino-LNA in position 4 allows for the first time to efficiently utilize dipole-dipole orientation parameter for sensing of single-nucleotide polymorphisms (SNPs) in nucleic acid targets by FRET. Using novel probes, SNP detection is achieved with advantages of large Stokes shift (115 nm), high fluorescence quantum yields and low limit of target detection values (< 5 nM). Rapid and accurate genotyping of highly polymorphic HIV Pol cDNA and RNA fragments performed herein proves the possibility for broad application of the novel pyrene-perylene FRET pairs, e.g., in imaging and clinical diagnostics.
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Affiliation(s)
- T. Santhosh Kumar
- Nucleic Acid Center; Department of Physics, Chemistry and Pharmacy; University of Southern Denmark; Odense, Denmark
- National Institute of Diabetes and Digestive and Kidney Diseases; National Institutes of Health; Molecular Recognition Section; Bethesda, MD USA
| | - Anna Myznikova
- Central Research Institute of Epidemiology; Moscow, Russia
| | | | - Irina Kira Astakhova
- Nucleic Acid Center; Department of Physics, Chemistry and Pharmacy; University of Southern Denmark; Odense, Denmark
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24
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Lundin KE, Højland T, Hansen BR, Persson R, Bramsen JB, Kjems J, Koch T, Wengel J, Smith CIE. Biological activity and biotechnological aspects of locked nucleic acids. ADVANCES IN GENETICS 2013; 82:47-107. [PMID: 23721720 DOI: 10.1016/b978-0-12-407676-1.00002-0] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Locked nucleic acid (LNA) is one of the most promising new nucleic acid analogues that has been produced under the past two decades. In this chapter, we have tried to cover many of the different areas, where this molecule has been used to improve the function of synthetic oligonucleotides (ONs). The use of LNA in antisense ONs, including gapmers, splice-switching ONs, and siLNA, as well as antigene ONs, is reviewed. Pharmacokinetics as well as pharmacodynamics of LNA ONs and a description of selected compounds in, or close to, clinical testing are described. In addition, new LNA modifications and the adaptation of enzymes for LNA incorporation are reviewed. Such enzymes may become important for the development of stabilized LNA-containing aptamers.
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Affiliation(s)
- Karin E Lundin
- Clinical Research Center, Department of Laboratory Medicine, Karolinska Institutet, Novum, Huddinge, Stockholm, Sweden.
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25
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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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26
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Astakhova IK, Wengel J. Interfacing click chemistry with automated oligonucleotide synthesis for the preparation of fluorescent DNA probes containing internal xanthene and cyanine dyes. Chemistry 2012. [PMID: 23180379 DOI: 10.1002/chem.201202621] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Double-labeled oligonucleotide probes containing fluorophores interacting by energy-transfer mechanisms are essential for modern bioanalysis, molecular diagnostics, and in vivo imaging techniques. Although bright xanthene and cyanine dyes are gaining increased prominence within these fields, little attention has thus far been paid to probes containing these dyes internally attached, a fact which is mainly due to the quite challenging synthesis of such oligonucleotide probes. Herein, by using 2'-O-propargyl uridine phosphoramidite and a series of xanthenes and cyanine azide derivatives, we have for the first time performed solid-phase copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) click labeling during the automated phosphoramidite oligonucleotide synthesis followed by postsynthetic click reactions in solution. We demonstrate that our novel strategy is rapid and efficient for the preparation of novel oligonucleotide probes containing internally positioned xanthene and cyanine dye pairs and thus represents a significant step forward for the preparation of advanced fluorescent oligonucleotide probes. Furthermore, we demonstrate that the novel xanthene and cyanine labeled probes display unusual and very promising photophysical properties resulting from energy-transfer interactions between the fluorophores controlled by nucleic acid assembly. Potential benefits of using these novel fluorescent probes within, for example, molecular diagnostics and fluorescence microscopy include: Considerable Stokes shifts (40-110 nm), quenched fluorescence of single-stranded probes accompanied by up to 7.7-fold light-up effect of emission upon target DNA/RNA binding, remarkable sensitivity to single-nucleotide mismatches, generally high fluorescence brightness values (FB up to 26), and hence low limit of target detection values (LOD down to <5 nM).
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Affiliation(s)
- I Kira Astakhova
- Nucleic Acid Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
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27
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Astakhova IK, Samokhina E, Babu BR, Wengel J. Novel (phenylethynyl)pyrene-LNA constructs for fluorescence SNP sensing in polymorphic nucleic acid targets. Chembiochem 2012; 13:1509-19. [PMID: 22761036 DOI: 10.1002/cbic.201200079] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Indexed: 01/05/2023]
Abstract
We describe fluorescent oligonucleotide probes labeled with novel (phenylethynyl)pyrene dyes attached to locked nucleic acids. Furthermore, we prove the utility of these probes for the effective detection of single-nucleotide polymorphisms in natural nucleic acids. High-affinity hybridization of the probes and excellent fluorescence responses to single-base mismatches in DNA/RNA targets are demonstrated in model dual-probe and doubly labeled probe formats. This stimulated us to develop two diagnostic systems for the homogeneous detection of a drug-resistance-causing mutation in HIV-1 protease cDNA and RNA gene fragments. Target sequences were obtained by analysis of 200 clinical samples from patients currently receiving anti-HIV/AIDS combination therapy at the Russian Federal AIDS Center. Using these fluorescent oligonucleotides, we were able to detect the target mutation despite all the challenges of the natural targets, that is, the presence of additional mutations, neighboring sequence variation, and low target concentration, which typically reduce binding and effectiveness of sensing by fluorescent oligonucleotides.
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Affiliation(s)
- Irina Kira Astakhova
- Nucleic Acid Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense M, Denmark.
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28
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Wang S, Guo J, Ono T, Kool ET. DNA polyfluorophores for real-time multicolor tracking of dynamic biological systems. Angew Chem Int Ed Engl 2012; 51:7176-80. [PMID: 22684777 DOI: 10.1002/anie.201201928] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2012] [Revised: 04/16/2012] [Indexed: 11/07/2022]
Abstract
Dye-ing to live: Spectral limitations of common organic dyes make it difficult or impossible to visualize and follow multiple biological components in rapidly moving systems. The development of a multispectral set of improved DNA-scaffolded fluorophores is described. Their use in multicolor cellular imaging (see scheme) and in tracking of biological motions on the subsecond timescale is demonstrated.
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Affiliation(s)
- Shenliang Wang
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
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29
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Wang S, Guo J, Ono T, Kool ET. DNA Polyfluorophores for Real-Time Multicolor Tracking of Dynamic Biological Systems. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201928] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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30
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Affiliation(s)
- Yin Nah Teo
- Department of Chemistry, Stanford University, California 94305, United States
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31
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Kashida H, Asanuma H. Preparation of supramolecular chromophoric assemblies using a DNA duplex. Phys Chem Chem Phys 2012; 14:7196-204. [DOI: 10.1039/c2cp40520b] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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32
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Asanuma H, Akahane M, Kondo N, Osawa T, Kato T, Kashida H. Quencher-free linear probe with multiple fluorophores on an acyclic scaffold. Chem Sci 2012. [DOI: 10.1039/c2sc20732j] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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33
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Astakhova IV, Kumar TS, Wengel J. Fluorescent oligonucleotides containing a novel perylene 2′-amino-α-L-LNA monomer: Synthesis and analytical potential. ACTA ACUST UNITED AC 2011. [DOI: 10.1135/cccc2011096] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Herein, a novel fluorescent nucleotide analogue, perylene-2′-amino-α-L-LNA, has been prepared and studied within synthetic oligonucleotides of different sequences. The phosphoramidite reagent was synthesized in 85% overall yield starting from 2′-amino-α-L-LNA nucleoside. Incorporation efficiency of the resulting perylene-2′-amino-α-L-LNA monomer (T*) into synthetic oligonucleotides was significantly improved by replacement of the typically used 1H-tetrazole activator with pyridine hydrochloride. Generally, oligonucleotides containing monomerT* showed high binding affinity towards complementary DNA and RNA targets, batochromically shifted excitation/emission wavelengths with respect to the often applied polyaromatic hydrocarbon pyrene, high fluorescent quantum yields and very low target detection limits (5–10 nM). Fluorescence of single stranded LNA/DNA mixmer oligonucleotide having two incorporations of monomersT* was quenched (quantum yield ΦF= 0.21) relative to duplexes of this probe with complementary DNA and RNA (ΦF= 0.42 and 0.35, respectively). On the contrary, a strong fluorescence quenching upon target binding was demonstrated by two short oligonucleotides of analogues sequences containing monomersT* at 5′- and 3′-terminal positions. We explain the hybridization-induced light-up effect observed for double-labeled probe by a reduction of fluorescence quenching due to precise positioning of the fluorophores within the double-stranded complexes. Furthermore, we propose that a covalent link between twoT* monomers in the double-labeled probe provides a remarkable degree of rigidity in the double helix which enforces positioning of the bulky perylene moieties in the nonpolar groove resulting in reduced fluorescence quenching.
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34
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Lambertucci C, Buccioni M, Cacciari B, Dal Ben D, Federico S, Klotz KN, Marucci G, Volpini R, Spalluto G, Cristalli G. New 9-methyl-8-(4-hydroxyphenyl)adenine derivatives as A1 adenosine receptor antagonists. ACTA ACUST UNITED AC 2011. [DOI: 10.1135/cccc2011091] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A new series of 9-methyladenines, bearing different bulky groups at the 8-position, were prepared and their affinity for the four human adenosine receptor subtypes were evaluated. All the synthesized compounds showed affinities at the A1, A2A, and A3AR subtypes ranging from nanomolar to micromolar levels with different degrees of A1selectivity, while they resulted nearly inactive at A2BAR. In particular, 9-methyl-8-[4-(4-methylbenzyloxy)phenyl]- adenine showed A1AR affinity in the nanomolar range and good levels of selectivity versus the other receptor subtypes. Furthermore, a functional assay at mouse ileum allowed to assess the potency of selected compounds at A1AR subtype. Results showed that all the tested derivatives are neutral antagonists and theirKbvalues are in good agreement with theKivalues from radioligand binding assay at human A1AR, confirming that the effect is due to inhibition of this subtype.
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35
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Gujrati MD, Kumar NSS, Brown AS, Captain B, Wilson JN. Luminescent charge-transfer complexes: tuning emission in binary fluorophore mixtures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6554-8. [PMID: 21548624 DOI: 10.1021/la2012809] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Charge-transfer (CT) complexes composed of a π-electron-poor naphthalene diimide (NDI) derivative combined with a series of π-electron-rich donors were investigated. Solutions of the CT complexes are nonemissive; however, solid-state complexes and aqueous suspensions display emission that is dependent on the energy of the HOMO of the electron donor. Crystallographic analysis of a pyrene-NDI complex reveals columnar packing and a high degree of frontier molecular orbital (FMO) overlap that likely contributes to the observed optical properties. The fluorescent CT particles are utilized as imaging agents; additional luminescent CT complexes may be realized by considering FMO energies and topologies.
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Affiliation(s)
- Maneesh D Gujrati
- Center for Supramolecular Science and Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33124, United States
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36
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Seela F, Pujari SS. Azide-alkyne "click" conjugation of 8-aza-7-deazaadenine-DNA: synthesis, duplex stability, and fluorogenic dye labeling. Bioconjug Chem 2010; 21:1629-41. [PMID: 20681566 DOI: 10.1021/bc100090y] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The internal dye labeling of DNA by the Huisgen-Meldal-Sharpless "click" reaction is described. Fluorogenic 9-azidomethyl anthracene 2 and 3-azido-7-hydroxycoumarin 3 were employed in the postsynthetic functionalization of oligonucleotides incorporating octa-(1,7)-diynyl-8-aza-7-deaza-2'-deoxyadenosine 1. Nucleoside 1 was prepared by Sonogashira cross coupling from the corresponding 7-iodo compound, converted into the corresponding phosphoramidite, and oligonucleotides were synthesized. To evaluate the influence of ligands on the oligonucleotide duplex stability, benzyl azide 4 (nonpolar), and 2',3'-dideoxy azidothymidine 5 (AZT) (polar) were introduced along with the fluorogenic dyes 2 and 3. DNA duplexes with octa-1,7-diynyl side chains (i.e., containing 1) are more stable than oligonucleotides containing 8-aza-7-deaza-2'-deoxyadenosine, unveiling that this side chain has steric freedom. A single conjugation by an anthracene residue led to a 9 °C T(m) increase of duplex melting. Contrary to 7-deazaadenine dye conjugates, the 8-aza-7-deazaadenine conjugates show virtually no fluorescence quenching, thereby developing almost as strong fluorescence as side chain click derivatives (32 and 33) in the absence of 8-aza-7-deazaadenine moiety. Duplexes containing the 8-aza-7-deazaadenine dye conjugate show increased fluorescence over single-stranded DNA. Mismatches with dA, dG, and dC develop reduced fluorescence compared to the fully matched base pair. Molecular dynamics simulations revealed that the bulky dye molecules are accommodated well in duplex DNA.
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Affiliation(s)
- Frank Seela
- Laboratory of Bioorganic Chemistry and Chemical Biology, Center for Nanotechnology, Heisenbergstrasse 11, Münster, Germany.
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Østergaard ME, Maity J, Babu BR, Wengel J, Hrdlicka PJ. Novel insights into the use of Glowing LNA as nucleic acid detection probes--influence of labeling density and nucleobases. Bioorg Med Chem Lett 2010; 20:7265-8. [PMID: 21071224 DOI: 10.1016/j.bmcl.2010.10.089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Revised: 10/15/2010] [Accepted: 10/18/2010] [Indexed: 10/18/2022]
Abstract
Appropriately designed 2'-N-(pyren-1-yl)carbonyl-2'-amino-LNA (locked nucleic acid) display large increases in fluorescence intensity and remarkably high quantum yields upon hybridization with nucleic acid targets. Thermal denaturation and fluorescence spectroscopy studies on ONs modified with known thymine monomer X and novel 5-methylcytosine monomer Y provide new insights into the design principles and mechanism of these Glowing LNA nucleic acid detection probes.
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Østergaard ME, Cheguru P, Papasani MR, Hill RA, Hrdlicka PJ. Glowing Locked Nucleic Acids: Brightly Fluorescent Probes for Detection of Nucleic Acids in Cells. J Am Chem Soc 2010; 132:14221-8. [DOI: 10.1021/ja1057295] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Michael E. Østergaard
- Department of Chemistry, University of Idaho, Moscow, Idaho 83844-2343, Department of Animal Veterinary Science, University of Idaho, Moscow, Idaho 83844-2330, and Biological Applications of Nanotechnology (BANTech) Center, University of Idaho, Moscow, Idaho 83844
| | - Pallavi Cheguru
- Department of Chemistry, University of Idaho, Moscow, Idaho 83844-2343, Department of Animal Veterinary Science, University of Idaho, Moscow, Idaho 83844-2330, and Biological Applications of Nanotechnology (BANTech) Center, University of Idaho, Moscow, Idaho 83844
| | - Madhusudhan R. Papasani
- Department of Chemistry, University of Idaho, Moscow, Idaho 83844-2343, Department of Animal Veterinary Science, University of Idaho, Moscow, Idaho 83844-2330, and Biological Applications of Nanotechnology (BANTech) Center, University of Idaho, Moscow, Idaho 83844
| | - Rodney A. Hill
- Department of Chemistry, University of Idaho, Moscow, Idaho 83844-2343, Department of Animal Veterinary Science, University of Idaho, Moscow, Idaho 83844-2330, and Biological Applications of Nanotechnology (BANTech) Center, University of Idaho, Moscow, Idaho 83844
| | - Patrick J. Hrdlicka
- Department of Chemistry, University of Idaho, Moscow, Idaho 83844-2343, Department of Animal Veterinary Science, University of Idaho, Moscow, Idaho 83844-2330, and Biological Applications of Nanotechnology (BANTech) Center, University of Idaho, Moscow, Idaho 83844
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Hainke S, Seitz O. Binaphthyl-DNA: stacking and fluorescence of a nonplanar aromatic base surrogate in DNA. Angew Chem Int Ed Engl 2010; 48:8250-3. [PMID: 19790219 DOI: 10.1002/anie.200903194] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sven Hainke
- Institut für Chemie der Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany
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40
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Gupta P, Langkjær N, Wengel J. Synthesis and biophysical studies of coronene functionalized 2'-amino-LNA: a novel class of fluorescent nucleic acids. Bioconjug Chem 2010; 21:513-20. [PMID: 20099893 DOI: 10.1021/bc900421r] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Incorporation of 2'-N-(coronen-1-yl)methyl-2'-amino-LNA monomer X or 2'-N-4-(coronen-1-yl)-4-oxobutanoyl-2'-amino-LNA monomer Y into short DNA strands induces high binding affinity toward DNA or RNA and a marked red-shift in steady-state fluorescence emission upon hybridization to cDNA or RNA.
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Affiliation(s)
- Pankaj Gupta
- Nucleic Acid Center, Department of Physics and Chemistry, University of Southern Denmark, 5230 Odense M, Denmark
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41
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Schwartz E, Le Gac S, Cornelissen JJLM, Nolte RJM, Rowan AE. Macromolecular multi-chromophoric scaffolding. Chem Soc Rev 2010; 39:1576-99. [DOI: 10.1039/b922160c] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Hainke S, Seitz O. Binaphthyl-DNA: Stapelung und Fluoreszenz eines nichtplanaren aromatischen Basensurrogates in DNA. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200903194] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Abstract
The self-organization of oligopyrene foldamers is described. Bi- and tri-segmental oligomers composed of nucleotides and non-nucleosidic, achiral pyrene monomers form double-stranded helical structures, as shown by absorbance, fluorescence, and CD spectroscopy. The mixed nature of alternating aromatic and phosphate groups ensures water solubility which, in turn, favors folding of the aromatic units. Pyrene molecules also assemble though interstrand stacking interactions. Structural organization of the pyrene units is an intrinsic property of the oligoaryl part and takes place independently from the sequence of the attached DNA. Chirality transfer from DNA to the pyrene segment leads to formation of a double helix, in which neighboring pyrene units are, in the present case, twisted in a right-handed manner. Pyrene helicity is most pronounced in a bi-segmental chimera, in which a DNA stem is present only at one end of the pyrene section.
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Affiliation(s)
- Robert Häner
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland.
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Veedu RN, Wengel J. Locked nucleic acid nucleoside triphosphates and polymerases: on the way towards evolution of LNA aptamers. MOLECULAR BIOSYSTEMS 2009; 5:787-92. [PMID: 19603111 DOI: 10.1039/b905513b] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Among numerous nucleic acid analogs reported in the past decades, locked nucleic acid (LNA) has received substantial attention and has become a significant tool within chemical biology disciplines like molecular biology research, diagnostics and therapeutic development. However, despite their obvious structurally unique properties, LNA-based aptamers for diagnostic and therapeutic applications remain largely unexplored. Future evolution of LNA oligonucleotide aptamers will depend on scientific breakthroughs relating to enzymatic polymerization using LNA nucleoside triphosphates as substrates. Herein, we highlight recent developments in this direction using various polymerases.
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Affiliation(s)
- Rakesh N Veedu
- Department of Physics and Chemistry, Nucleic Acid Center, University of Southern Denmark, Campusvej 55, Odense M, Denmark
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Affiliation(s)
- Doug Auld
- National Institutes of Health, Bethesda, MD
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