1
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Tosetto B, Gastaldi M, Renno G, Pirri CF, Barolo C, Fin A, Roppolo I. Colorimetric 3D printable base-detectors exploiting halocromic core-substituted naphthalenediimides. Polym Chem 2023. [DOI: 10.1039/d2py01593e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
3D printing field is in rapid evolution, and its applications are widening continuously. Among the different techniques available, light induced vat-methods demonstrated to be particularly suitable for developing functional devices...
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2
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Renno G, Cardano F, Ilieva V, Viscardi G, Fin A. Near‐Infrared squaraine dyes as bright fluorescent probes: a structure‐activity photo physical investigation in liposomes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Giacomo Renno
- Universita degli Studi di Torino Chemistry Via P. Giuria 7 10125 Torino ITALY
| | | | - Viktoria Ilieva
- Universita degli Studi di Torino Chemistry Via P. Giuria 7 10125 Torino ITALY
| | - Guido Viscardi
- Universita degli Studi di Torino Chemistry Via P. Giuria 7 10125 Torino ITALY
| | - Andrea Fin
- Universita degli Studi di Torino Chemistry Via P. Giuria 7 10125 Torino ITALY
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3
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Hyun Lee K, Kimoto M, Kawai G, Okamoto I, Fin A, Hirao I. Dye‐Conjugated Spinach RNA by Genetic Alphabet Expansion. Chemistry 2022; 28:e202104396. [DOI: 10.1002/chem.202104396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Indexed: 11/09/2022]
Affiliation(s)
- Kyung Hyun Lee
- Institute of Bioengineering and Bioimaging A*STAR 31 Biopolis Way, The Nanos #07-01 Singapore 138669 Singapore
| | - Michiko Kimoto
- Institute of Bioengineering and Bioimaging A*STAR 31 Biopolis Way, The Nanos #07-01 Singapore 138669 Singapore
| | - Gota Kawai
- Chiba Institute of Technology (CIT) Tsudanuma 2-17-1 Narashino Chiba 275-0016 Japan
| | - Itaru Okamoto
- Institute of Bioengineering and Bioimaging A*STAR 31 Biopolis Way, The Nanos #07-01 Singapore 138669 Singapore
| | - Andrea Fin
- Institute of Bioengineering and Bioimaging A*STAR 31 Biopolis Way, The Nanos #07-01 Singapore 138669 Singapore
| | - Ichiro Hirao
- Institute of Bioengineering and Bioimaging A*STAR 31 Biopolis Way, The Nanos #07-01 Singapore 138669 Singapore
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4
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Latini G, Signorile M, Rosso F, Fin A, d’Amora M, Giordani S, Pirri F, Crocellà V, Bordiga S, Bocchini S. Efficient and reversible CO2 capture in bio-based ionic liquids solutions. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2021.101815] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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5
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Giordano M, Renno G, Quagliotto P, Barolo C, Cravotto G, Fin A, Viscardi G. Solid-Phase Synthesis of Asymmetric Cyanine Dyes. CURR ORG CHEM 2021. [DOI: 10.2174/1385272825666210628104642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Cyanine Dyes (CD) are a functional class of organic molecules used in several applications
ranging from photography to bioimaging. Most well-known features of CDs reside
on high molar extinction coefficients up to 105 L mol-1cm-1 and on the absorption spectra,
ranging from 500 to 1000 nm, which can be fine-tuned both by extending the length of the
central methylene bridge or by modulating the terminal heterocycles. In the last decades, new
synthetic methodologies, namely microwave-assisted and the solid-phase procedure, have
been developed to overcome the limitation of the classical synthetic protocols. While the microwave
approach usually reduces the exposure time of the reagents and products to thermal
degradation, the solid-phase methodology allows easier synthetic protocols, which are translated
into higher yields and simpler products purification. In the present review, a comprehensive
analysis of the solid-phase methods for the synthesis of asymmetrical CDs is discussed,
with a critical evaluation of the difference among the currently available solid-state approaches.
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Affiliation(s)
- Marco Giordano
- Department of Chemistry and NIS Interdepartmental Center and INSTM Reference Centre, University of Torino, Via Pietro Giuria 7 - 10125, Torino, Italy
| | - Giacomo Renno
- Department of Chemistry and NIS Interdepartmental Center and INSTM Reference Centre, University of Torino, Via Pietro Giuria 7 - 10125, Torino, Italy
| | - Pierluigi Quagliotto
- Department of Chemistry and NIS Interdepartmental Center and INSTM Reference Centre, University of Torino, Via Pietro Giuria 7 - 10125, Torino, Italy
| | - Claudia Barolo
- Department of Chemistry and NIS Interdepartmental Center and INSTM Reference Centre, University of Torino, Via Pietro Giuria 7 - 10125, Torino, Italy
| | - Giancarlo Cravotto
- 2Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9 - 10125, Torino, Italy
| | - Andrea Fin
- 2Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9 - 10125, Torino, Italy
| | - Guido Viscardi
- Department of Chemistry and NIS Interdepartmental Center and INSTM Reference Centre, University of Torino, Via Pietro Giuria 7 - 10125, Torino, Italy
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6
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Bucardo MS, Wu Y, Ludford PT, Li Y, Fin A, Tor Y. Real-Time Monitoring of Human Guanine Deaminase Activity by an Emissive Guanine Analog. ACS Chem Biol 2021; 16:1208-1214. [PMID: 34190533 DOI: 10.1021/acschembio.1c00232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Guanine deaminase (GDA) deaminates guanine to xanthine. Despite its significance, the study of human GDA remains limited compared to other metabolic deaminases. As a result, its substrate and inhibitor repertoire are limited, and effective real-time activity, inhibitory, and discovery assays are missing. Herein, we explore two emissive heterocyclic cores, based on thieno[3,4-d]pyrimidine (thN) and isothiazole[4,3-d]pyrimidine (tzN), as surrogate GDA substrates. We demonstrate that, unlike the thieno analog, thGN, the isothiazolo guanine surrogate, tzGN, does undergo effective enzymatic deamination by GDA and yields the spectroscopically distinct xanthine analog, tzXN. Further, we showcase the potential of this fluorescent nucleobase surrogate to provide a visible spectral window for a real-time study of GDA and its inhibition.
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Affiliation(s)
- Marcela S. Bucardo
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - You Wu
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Paul T. Ludford
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Yao Li
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Andrea Fin
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Yitzhak Tor
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
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7
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Mannu A, Cardano F, Baldino S, Fin A. Behavior of Ternary Mixtures of Hydrogen Bond Acceptors and Donors in Terms of Band Gap Energies. Materials (Basel) 2021; 14:ma14123418. [PMID: 34203075 PMCID: PMC8235457 DOI: 10.3390/ma14123418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/14/2021] [Accepted: 06/18/2021] [Indexed: 11/16/2022]
Abstract
Three ternary mixtures composed by choline chloride (ChCl), ethylene glycol (EG), and a second hydrogen bond donor (HBD) as ethanol (A), 2-propanol (B), and glycerol (C) were studied in terms of composition related to the band gap energy (BGE). A Design of Experiments (DoE) approach, and in particular a Simple Lattice three-components design, was employed for determining the variation of the BGE upon the composition of each system. UV-VIS analysis and subsequent Tauc plot methodology provided the data requested from the DoE, and multivariate statistical analysis revealed a drop of the BGE in correspondence to specific binary compositions for systems A and B. In particular, a BGE of 3.85 eV was registered for the mixtures ChCl/EtOH (1:1) and ChCl/2-propanol (1:1), which represents one of the lowest values ever observed for these systems.
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Affiliation(s)
- Alberto Mannu
- Department of Chemistry, University of Turin, Via Pietro Giuria 7, I-10125 Turin, Italy; (F.C.); (S.B.)
- Correspondence:
| | - Francesca Cardano
- Department of Chemistry, University of Turin, Via Pietro Giuria 7, I-10125 Turin, Italy; (F.C.); (S.B.)
| | - Salvatore Baldino
- Department of Chemistry, University of Turin, Via Pietro Giuria 7, I-10125 Turin, Italy; (F.C.); (S.B.)
| | - Andrea Fin
- Department of Drug Science and Technology, University of Turin, Via Pietro Giuria 9, I-10125 Turin, Italy;
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8
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Mannu A, Cardano F, Fin A, Baldino S, Prandi C. Choline chloride-based ternary deep band gap systems. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Nejrotti S, Mannu A, Blangetti M, Baldino S, Fin A, Prandi C. Optimization of Nazarov Cyclization of 2,4-Dimethyl-1,5-diphenylpenta-1,4-dien-3-one in Deep Eutectic Solvents by a Design of Experiments Approach. Molecules 2020; 25:molecules25235726. [PMID: 33291596 PMCID: PMC7730498 DOI: 10.3390/molecules25235726] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/01/2020] [Accepted: 12/03/2020] [Indexed: 12/19/2022] Open
Abstract
The unprecedented Nazarov cyclization of a model divinyl ketone using phosphonium-based Deep Eutectic Solvents as sustainable non-innocent reaction media is described. A two-level full factorial Design of Experiments was conducted for elucidating the effect of the components of the eutectic mixture and optimizing the reaction conditions in terms of temperature, time, and substrate concentration. In the presence of the Deep Eutectic Solvent (DES) triphenylmethylphosphonium bromide/ethylene glycol, it was possible to convert more than 80% of the 2,4-dimethyl-1,5-diphenylpenta-1,4-dien-3-one, with a specific conversion, into the cyclopentenone Nazarov derivative of 62% (16 h, 60 °C). For the reactions conducted in the DES triphenylmethylphosphonium bromide/acetic acid, quantitative conversions were obtained with percentages of the Nazarov product above 95% even at 25 °C. Surface Responding Analysis of the optimized data furnished a useful tool to determine the best operating conditions leading to quantitative conversion of the starting material, with complete suppression of undesired side-reactions, high yields and selectivity. After optimization, it was possible to convert more than 90% of the model substrate into the desired cyclopentenone with cis percentages up to 77%. Experimental validation of the implemented model confirmed the robustness and the suitability of the procedure, leading to possible further extension to this specific combination of experimental designs to other substrates or even to other synthetic processes of industrial interest.
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Affiliation(s)
- Stefano Nejrotti
- Department of Chemistry, University of Turin, Via Pietro Giuria, 7-I-10125 Torino, Italy; (S.N.); (S.B.); (C.P.)
| | - Alberto Mannu
- Department of Chemistry, University of Turin, Via Pietro Giuria, 7-I-10125 Torino, Italy; (S.N.); (S.B.); (C.P.)
- Correspondence: (A.M.); (M.B.); Tel.: +39-011-6708033 (M.B.)
| | - Marco Blangetti
- Department of Chemistry, University of Turin, Via Pietro Giuria, 7-I-10125 Torino, Italy; (S.N.); (S.B.); (C.P.)
- Correspondence: (A.M.); (M.B.); Tel.: +39-011-6708033 (M.B.)
| | - Salvatore Baldino
- Department of Chemistry, University of Turin, Via Pietro Giuria, 7-I-10125 Torino, Italy; (S.N.); (S.B.); (C.P.)
| | - Andrea Fin
- Department of Drug Science and Technology, University of Turin, Via Pietro Giuria, 9-I-10125 Torino, Italy;
| | - Cristina Prandi
- Department of Chemistry, University of Turin, Via Pietro Giuria, 7-I-10125 Torino, Italy; (S.N.); (S.B.); (C.P.)
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10
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Li Y, Fin A, Rovira AR, Su Y, Dippel AB, Valderrama JA, Riestra AM, Nizet V, Hammond MC, Tor Y. Tuning the Innate Immune Response to Cyclic Dinucleotides by Using Atomic Mutagenesis. Chembiochem 2020; 21:2595-2598. [PMID: 32346955 DOI: 10.1002/cbic.202000162] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 04/24/2020] [Indexed: 12/18/2022]
Abstract
Cyclic dinucleotides (CDNs) trigger the innate immune response in eukaryotic cells through the stimulator of interferon genes (STING) signaling pathway. To decipher this complex cellular process, a better correlation between structure and downstream function is required. Herein, we report the design and immunostimulatory effect of a novel group of c-di-GMP analogues. By employing an "atomic mutagenesis" strategy, changing one atom at a time, a class of gradually modified CDNs was prepared. These c-di-GMP analogues induce type-I interferon (IFN) production, with some being more potent than c-di-GMP, their native archetype. This study demonstrates that CDN analogues bearing modified nucleobases are able to tune the innate immune response in eukaryotic cells.
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Affiliation(s)
- Yao Li
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA
| | - Andrea Fin
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA
| | - Alexander R Rovira
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA
| | - Yichi Su
- Department of Chemistry and Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA
| | - Andrew B Dippel
- Department of Chemistry and Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA
| | - Jonathan Andrés Valderrama
- Collaborative to Halt Antibiotic-Resistant Microbes, Department of Pediatrics, University of California, San Diego, La Jolla, CA 92093-0760, USA
| | - Angelica M Riestra
- Collaborative to Halt Antibiotic-Resistant Microbes, Department of Pediatrics, University of California, San Diego, La Jolla, CA 92093-0760, USA
| | - Victor Nizet
- Collaborative to Halt Antibiotic-Resistant Microbes, Department of Pediatrics, University of California, San Diego, La Jolla, CA 92093-0760, USA.,Skaggs School of Pharmacy & Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA 92093-0760, USA
| | - Ming C Hammond
- Department of Chemistry and Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA.,Department of Chemistry and Henry Eyring Center for Cell and Genome Sciences, University of Utah, Salt Lake City, UT 84112, USA
| | - Yitzhak Tor
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA
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11
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Abstract
Bacterial cyclic dinucleotides (CDNs) play important roles in regulating biofilm formation, motility and virulence. In eukaryotic cells, theses bacterial CDNs are recognized as pathogen-associated molecular patterns (PAMPs) and trigger an innate immune response. We report the photophysical analyses of a novel group of enzymatically synthesized emissive CDN analogues comprised of two families of isomorphic ribonucleotides. The highly favorable photophysical features of the CDN analogues, when compared to their non-emissive natural counterparts, are used to monitor in real time the dinucleotide cyclase-mediated synthesis and phosphodiesterase (PDE)-mediated hydrolysis of homodimeric and mixed CDNs, providing effective means to probe the activities of two classes of bacterial enzymes and insight into their biomolecular recognition and catalytic features.
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Affiliation(s)
- Yao Li
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
| | - Paul T Ludford
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
| | - Andrea Fin
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125, Turin, Italy
| | - Alexander R Rovira
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
| | - Yitzhak Tor
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
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12
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Ludford PT, Rovira AR, Fin A, Tor Y. Front Cover: Fluorescing Isofunctional Ribonucleosides: Assessing Adenosine Deaminase Activity and Inhibition (ChemBioChem 5/2019). Chembiochem 2019. [DOI: 10.1002/cbic.201900080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Paul T. Ludford
- Department of Chemistry and Biochemistry; University of California, San Diego; 9500 Gilman Drive La Jolla CA 92093-0358 USA
| | - Alexander R. Rovira
- Department of Chemistry and Biochemistry; University of California, San Diego; 9500 Gilman Drive La Jolla CA 92093-0358 USA
| | - Andrea Fin
- Department of Chemistry and Biochemistry; University of California, San Diego; 9500 Gilman Drive La Jolla CA 92093-0358 USA
| | - Yitzhak Tor
- Department of Chemistry and Biochemistry; University of California, San Diego; 9500 Gilman Drive La Jolla CA 92093-0358 USA
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13
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Ludford PT, Rovira AR, Fin A, Tor Y. Fluorescing Isofunctional Ribonucleosides: Assessing Adenosine Deaminase Activity and Inhibition. Chembiochem 2019; 20:718-726. [PMID: 30566279 DOI: 10.1002/cbic.201800665] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Indexed: 12/12/2022]
Abstract
The enzymatic conversion of isothiazolo[4,3-d]pyrimidine-based adenosine (tz A) and 2-aminoadenosine (tz 2-AA) analogues to the corresponding isothiazolo[4,3-d]pyrimidine-based inosine (tz I) and guanosine (tz G) derivatives is evaluated and compared to the conversion of native adenosine to inosine. Henri-Michaelis-Menten analyses provides the foundation for a high-throughput screening assay, and the efficacy of the assay is showcased by fluorescence-based analysis of tz A conversion to tz I in the presence of known and newly synthesized inhibitors.
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Affiliation(s)
- Paul T Ludford
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
| | - Alexander R Rovira
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
| | - Andrea Fin
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
| | - Yitzhak Tor
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
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14
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Affiliation(s)
- Pierluigi Quagliotto
- Dipartimento di Chimica and NIS - Interdepartmental Centre for Nanostructured Interfaces and Surfaces, Universita di Torino, Torino, Italy
| | - Andrea Fin
- Department of Chemistry and Biochemistry, University of California, La Jolla, San Diego, CA 92093-0358, Italy
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15
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Berto S, Carena L, Chiavazza E, Marletti M, Fin A, Giacomino A, Malandrino M, Barolo C, Prenesti E, Vione D. Off-line and real-time monitoring of acetaminophen photodegradation by an electrochemical sensor. Chemosphere 2018; 204:556-562. [PMID: 29602587 DOI: 10.1016/j.chemosphere.2018.03.069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 03/09/2018] [Accepted: 03/10/2018] [Indexed: 06/08/2023]
Abstract
The photochemistry of N-acetyl-para-aminophenol (acetaminophen, APAP) is here investigated by using differential pulse voltammetry (DPV) analysis to monitor APAP photodegradation upon steady-state irradiation. The purpose of this work is to assess the applicability of DPV to monitor the photochemical behaviour of xenobiotics, along with the development of an electrochemical set-up for the real-time monitoring of APAP photodegradation. We here investigated the APAP photoreactivity towards the main photogenerated reactive transients species occurring in sunlit surface waters (hydroxyl radical HO, carbonate radical CO3-, excited triplet state of anthraquinone-2-sulfonate used as proxy of the chromophoric DOM, and singlet oxygen 1O2), and determined relevant kinetic parameters. A standard procedure based on UV detection coupled with liquid chromatography (HPLC-UV) was used under identical experimental conditions to compare and verify the DPV-based results. The latter were in agreement with HPLC data, with the exception of the triplet-sensitized processes. In the other cases, DPV could be used as an alternative to the well-tested but more costly and time-consuming HPLC-UV technique. We have also assessed the reaction rate constant between APAP and HO by real-time DPV, which allowed for the monitoring of APAP photodegradation inside the irradiation chamber. Unfortunately, real-time DPV measurements are likely to be affected by temperature variations of the irradiated samples. Overall, DPV appeared as a fast, cheap and reasonably reliable technique when used for the off-line monitoring of APAP photodegradation. When a suitable real-time procedure is developed, it could become a very straightforward method to study the photochemical behaviour of electroactive xenobiotics.
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Affiliation(s)
- Silvia Berto
- Dept. of Chemistry, University of Torino, Via P. Giuria 7, 10125 Turin, Italy.
| | - Luca Carena
- Dept. of Chemistry, University of Torino, Via P. Giuria 7, 10125 Turin, Italy.
| | - Enrico Chiavazza
- Dept. of Chemistry, University of Torino, Via P. Giuria 7, 10125 Turin, Italy
| | - Matteo Marletti
- Dept. of Chemistry, University of Torino, Via P. Giuria 7, 10125 Turin, Italy
| | - Andrea Fin
- Dept. of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, United States
| | - Agnese Giacomino
- Dept. of Drug Science and Technology, University of Torino, Via P. Giuria 9, 10125 Turin, Italy
| | - Mery Malandrino
- Dept. of Chemistry, University of Torino, Via P. Giuria 7, 10125 Turin, Italy
| | - Claudia Barolo
- Dept. of Chemistry, University of Torino, Via P. Giuria 7, 10125 Turin, Italy; INSTM and NIS Centre, University of Torino, Via Quarello 15A, 10135 Turin, Italy
| | - Enrico Prenesti
- Dept. of Chemistry, University of Torino, Via P. Giuria 7, 10125 Turin, Italy
| | - Davide Vione
- Dept. of Chemistry, University of Torino, Via P. Giuria 7, 10125 Turin, Italy
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16
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Bonomo M, Magistris C, Buscaino R, Fin A, Barolo C, Dini D. Effect of Sodium Hydroxide Pretreatment of NiOx
Cathodes on the Performance of Squaraine-Sensitized p
-Type Dye-Sensitized Solar Cells. ChemistrySelect 2018. [DOI: 10.1002/slct.201702867] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Matteo Bonomo
- Department of Chemistry; University of Rome ''La Sapienza''; p.le Aldo Moro 5 00139 Rome Italy
| | - Claudio Magistris
- Department of Chemistry and NIS Interdepartmental Centre and INSTM Reference Centre; University of Turin; via Pietro Giuria 7 10125 Torino Italy
| | - Roberto Buscaino
- Department of Chemistry and NIS Interdepartmental Centre and INSTM Reference Centre; University of Turin; via Pietro Giuria 7 10125 Torino Italy
| | - Andrea Fin
- Department of Chemistry and Biochemistry; University of California; San Diego, La Jolla, California 92093-0358 United States
| | - Claudia Barolo
- Department of Chemistry and NIS Interdepartmental Centre and INSTM Reference Centre; University of Turin; via Pietro Giuria 7 10125 Torino Italy
- ICxT Interdepartmental Centre; Lungo Dora Siena 100 10153 Torino, Italy
| | - Danilo Dini
- Department of Chemistry; University of Rome ''La Sapienza''; p.le Aldo Moro 5 00139 Rome Italy
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17
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Hallé F, Fin A, Rovira AR, Tor Y. Emissive Synthetic Cofactors: Enzymatic Interconversions of tz A Analogues of ATP, NAD + , NADH, NADP + , and NADPH. Angew Chem Int Ed Engl 2017; 57:1087-1090. [PMID: 29228460 DOI: 10.1002/anie.201711935] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Indexed: 12/11/2022]
Abstract
A series of enzymatic transformations, which generate visibly emissive isofunctional cofactors based on an isothiazolo[4,3-d]pyrimidine analogue of adenosine (tz A), was developed. Nicotinamide adenylyl transferase condenses nicotinamide mononucleotide and tz ATP to yield Ntz AD+ , which can be enzymatically phosphorylated by NAD+ kinase and ATP or tz ATP to the corresponding Ntz ADP+ . The latter can be engaged in NADP-specific coupled enzymatic transformations involving conversion to Ntz ADPH by glucose-6-phosphate dehydrogenase and reoxidation to Ntz ADP+ by glutathione reductase. The Ntz ADP+ /Ntz ADPH cycle can be monitored in real time by fluorescence spectroscopy.
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Affiliation(s)
- François Hallé
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
| | - Andrea Fin
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
| | - Alexander R Rovira
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
| | - Yitzhak Tor
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
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Abstract
The synthesis, photophysics, and biochemical utility of a fluorescent NAD+ analogue based on an isothiazolo[4,3-d]pyrimidine core (NtzAD+) are described. Enzymatic reactions, photophysically monitored in real time, show NtzAD+ and NtzADH to be substrates for yeast alcohol dehydrogenase and lactate dehydrogenase, respectively, with reaction rates comparable to that of the native cofactors. A drop in fluorescence is seen as NtzAD+ is converted to NtzADH, reflecting a complementary photophysical behavior to that of the native NAD+/NADH. NtzAD+ and NtzADH serve as substrates for NADase, which selectively cleaves the nicotinamide's glycosidic bond yielding tzADP-ribose. NtzAD+ also serves as a substrate for ribosyl transferases, including human adenosine ribosyl transferase 5 (ART5) and Cholera toxin subunit A (CTA), which hydrolyze the nicotinamide and transfer tzADP-ribose to an arginine analogue, respectively. These reactions can be monitored by fluorescence spectroscopy, in stark contrast to the corresponding processes with the nonemissive NAD+.
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Affiliation(s)
- Alexander R Rovira
- Department of Chemistry and Biochemistry, University of California, San Diego , La Jolla, California 92093-0358, United States
| | - Andrea Fin
- Department of Chemistry and Biochemistry, University of California, San Diego , La Jolla, California 92093-0358, United States
| | - Yitzhak Tor
- Department of Chemistry and Biochemistry, University of California, San Diego , La Jolla, California 92093-0358, United States
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Rovira AR, Fin A, Tor Y. Expanding a fluorescent RNA alphabet: synthesis, photophysics and utility of isothiazole-derived purine nucleoside surrogates. Chem Sci 2017; 8:2983-2993. [PMID: 28451365 PMCID: PMC5380116 DOI: 10.1039/c6sc05354h] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 01/26/2017] [Indexed: 01/09/2023] Open
Abstract
A series of emissive ribonucleoside purine mimics, all comprised of an isothiazolo[4,3-d]pyrimidine core, was prepared using a divergent pathway involving a key Thorpe-Ziegler cyclization. In addition to an adenosine and a guanosine mimic, analogues of the noncanonical xanthosine, isoguanosine, and 2-aminoadenosine were also synthesized and found to be emissive. Isothiazolo 2-aminoadenosine, an adenosine surrogate, was found to be particularly emissive and effectively deaminated by adenosine deaminase. Competitive studies with adenosine deaminase with each analogue in combination with native adenosine showed preference for the native substrate while still deaminating the isothiazolo analogues.
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Affiliation(s)
- Alexander R Rovira
- Department of Chemistry and Biochemistry , University of California , San Diego , La Jolla , California 92093-0358 , USA .
| | - Andrea Fin
- Department of Chemistry and Biochemistry , University of California , San Diego , La Jolla , California 92093-0358 , USA .
| | - Yitzhak Tor
- Department of Chemistry and Biochemistry , University of California , San Diego , La Jolla , California 92093-0358 , USA .
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Li Y, Fin A, McCoy L, Tor Y. Polymerase‐Mediated Site‐Specific Incorporation of a Synthetic Fluorescent Isomorphic G Surrogate into RNA. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609327] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yao Li
- Department of Chemistry and Biochemistry University of California, San Diego 9500 Gilman Drive La Jolla CA 92093-0358 USA
| | - Andrea Fin
- Department of Chemistry and Biochemistry University of California, San Diego 9500 Gilman Drive La Jolla CA 92093-0358 USA
| | - Lisa McCoy
- Department of Chemistry and Biochemistry University of California, San Diego 9500 Gilman Drive La Jolla CA 92093-0358 USA
| | - Yitzhak Tor
- Department of Chemistry and Biochemistry University of California, San Diego 9500 Gilman Drive La Jolla CA 92093-0358 USA
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Li Y, Fin A, McCoy L, Tor Y. Polymerase-Mediated Site-Specific Incorporation of a Synthetic Fluorescent Isomorphic G Surrogate into RNA. Angew Chem Int Ed Engl 2016; 56:1303-1307. [PMID: 28000329 DOI: 10.1002/anie.201609327] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 11/10/2016] [Indexed: 12/22/2022]
Abstract
An enzyme-mediated approach for the assembly of singly modified RNA constructs in which specific G residues are replaced with th G, an emissive isomorphic G surrogate, is reported. Transcription in the presence of th G and native nucleoside triphosphates enforces initiation with the unnatural analogue, yielding 5'-end modified transcripts that can be mono-phosphorylated and ligated to provide longer site-specifically modified RNA constructs. The scope of this unprecedented enzymatic approach to non-canonical purine-containing RNAs is explored via the assembly of several altered hammerhead (HH) ribozymes and a singly modified HH substrate. By strategically modifying key positions, a mechanistic insight into the ribozyme-mediated cleavage is gained. Additionally, the emissive features of the modified nucleoside and its responsiveness to environmental changes can be used to monitor cleavage in real time by steady state fluorescence spectroscopy.
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Affiliation(s)
- Yao Li
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
| | - Andrea Fin
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
| | - Lisa McCoy
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
| | - Yitzhak Tor
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0358, USA
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Vranken C, Fin A, Tufar P, Hofkens J, Burkart MD, Tor Y. Chemoenzymatic synthesis and utilization of a SAM analog with an isomorphic nucleobase. Org Biomol Chem 2016; 14:6189-92. [PMID: 27270873 DOI: 10.1039/c6ob00844e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
SalL, an enzyme that catalyzes the synthesis of SAM from l-methionine and 5'-chloro-5'-deoxyoadenosine, is shown to accept 5'-chloro-5'-deoxythienoadenosine as a substrate and facilitate the synthesis of a synthetic SAM analog with an unnatural nucleobase. This synthetic cofactor is demonstrated to replace SAM in the DNA methylation reaction with M.TaqI.
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Affiliation(s)
- C Vranken
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
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Abstract
An evolved fluorescent ribonucleoside alphabet comprising isomorphic purine ((tz)A, (tz)G) and pyrimidine ((tz)U, (tz)C) analogues, all derived from isothiazolo[4,3-d]pyrimidine as a common heterocyclic core, is described. Structural and biochemical analyses illustrate that the nucleosides, particularly the C-nucleosidic purine analogues, are faithful isomorphic and isofunctional surrogates of their natural counterparts and show improved features when compared to an RNA alphabet derived from thieno[3,4-d]-pyrimidine. The restoration of the nitrogen in a position equivalent to the purines' N7 leads to "isofunctional" behavior, as illustrated by the ability of adenosine deaminase to deaminate (tz)A as effectively as adenosine, the native substrate.
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Affiliation(s)
- Alexander R Rovira
- Department of Chemistry and Biochemistry, University of California, San Diego , La Jolla, California 92093-0358, United States
| | - Andrea Fin
- Department of Chemistry and Biochemistry, University of California, San Diego , La Jolla, California 92093-0358, United States
| | - Yitzhak Tor
- Department of Chemistry and Biochemistry, University of California, San Diego , La Jolla, California 92093-0358, United States
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Mizrahi RA, Shin D, Sinkeldam RW, Phelps KJ, Fin A, Tantillo DJ, Tor Y, Beal PA. A Fluorescent Adenosine Analogue as a Substrate for an A-to-I RNA Editing Enzyme. Angew Chem Int Ed Engl 2015; 54:8713-6. [PMID: 26095193 PMCID: PMC4532316 DOI: 10.1002/anie.201502070] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 04/21/2015] [Indexed: 12/14/2022]
Abstract
Adenosine to inosine RNA editing catalyzed by ADAR enzymes is common in humans, and altered editing is associated with disease. Experiments using substrate RNAs with adenosine analogues at editing sites are useful for defining features of the ADAR reaction mechanism. The reactivity of ADAR2 was evaluated with RNA containing the emissive adenosine analogue thieno[3,4-d]-6-aminopyrimidine ((th)A). This nucleoside was incorporated into a mimic of the glutamate receptor B (GluR B) mRNA R/G editing site. We found that (th)A is recognized by AMV reverse transcriptase as A, and is deaminated rapidly by human ADAR2 to give (th)I. Importantly, ADAR reaction progress can be monitored by following the deamination-induced change in fluorescence of the (th)A-modified RNA. The observed high (th)A reactivity adds to our understanding of the structural features that are necessary for an efficient hADAR2 reaction. Furthermore, the new fluorescent assay is expected to accelerate mechanistic studies of ADARs.
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Affiliation(s)
- Rena A Mizrahi
- Department of Chemistry, University of California, Davis, One Shields Ave, Davis, CA 95616 (USA)
| | - Dongwon Shin
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093 (USA)
| | - Renatus W Sinkeldam
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093 (USA)
| | - Kelly J Phelps
- Department of Chemistry, University of California, Davis, One Shields Ave, Davis, CA 95616 (USA)
| | - Andrea Fin
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093 (USA)
| | - Dean J Tantillo
- Department of Chemistry, University of California, Davis, One Shields Ave, Davis, CA 95616 (USA)
| | - Yitzhak Tor
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093 (USA).
| | - Peter A Beal
- Department of Chemistry, University of California, Davis, One Shields Ave, Davis, CA 95616 (USA).
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Mizrahi RA, Shin D, Sinkeldam RW, Phelps KJ, Fin A, Tantillo DJ, Tor Y, Beal PA. A Fluorescent Adenosine Analogue as a Substrate for an A-to-I RNA Editing Enzyme. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502070] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Xu L, Chen YC, Chong J, Fin A, McCoy LS, Xu J, Zhang C, Wang D. Pyrene-based quantitative detection of the 5-formylcytosine loci symmetry in the CpG duplex content during TET-dependent demethylation. Angew Chem Int Ed Engl 2014; 53:11223-7. [PMID: 25159856 DOI: 10.1002/anie.201406220] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 07/21/2014] [Indexed: 01/19/2023]
Abstract
Methylcytosine (5mC) is mostly symmetrically distributed in CpG sites. Ten-eleven-translocation (TET) proteins are the key enzymes involved in active DNA demethylation through stepwise oxidation of 5mC. However, oxidation pathways of TET enzymes in the symmetrically methylated CpG context are still elusive. Employing the unique fluorescence properties of pyrene group, we designed and synthesized a sensitive fluorescence-based probe not only to target 5-formylcytosine (5fC) sites, but also to distinguish symmetric from asymmetric 5fC sites in the double stranded DNA context during TET-dependent 5mC oxidation process. Using this novel probe, we revealed dominant levels of symmetric 5fC among total 5fC sites during in vitro TET-dependent 5mC oxidation and novel mechanistic insights into the TET-dependent 5mC oxidation in the mCpG context.
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Affiliation(s)
- Liang Xu
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA 92093 (USA)
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Xu L, Chen YC, Chong J, Fin A, McCoy LS, Xu J, Zhang C, Wang D. Pyrene-Based Quantitative Detection of the 5-Formylcytosine Loci Symmetry in the CpG Duplex Content during TET-Dependent Demethylation. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406220] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Abstract
The “twistome” of push–pull oligothiophenes is covered comprehensively. Particular emphasis is on the development of conceptually innovative fluorescent membrane probes.
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Affiliation(s)
| | - Marta Dal Molin
- Department of Organic Chemistry
- University of Geneva
- Geneva, Switzerland
| | - Sandra Ward
- Department of Organic Chemistry
- University of Geneva
- Geneva, Switzerland
| | - Andrea Fin
- Department of Organic Chemistry
- University of Geneva
- Geneva, Switzerland
| | - Naomi Sakai
- Department of Organic Chemistry
- University of Geneva
- Geneva, Switzerland
| | - Stefan Matile
- Department of Organic Chemistry
- University of Geneva
- Geneva, Switzerland
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Fin A, Vargas Jentzsch A, Sakai N, Matile S. Oligothiophene Amphiphiles as Planarizable and Polarizable Fluorescent Membrane Probes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206446] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Fin A, Vargas Jentzsch A, Sakai N, Matile S. Oligothiophene Amphiphiles as Planarizable and Polarizable Fluorescent Membrane Probes. Angew Chem Int Ed Engl 2012; 51:12736-9. [DOI: 10.1002/anie.201206446] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 10/17/2012] [Indexed: 01/04/2023]
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Doval DA, Fin A, Takahashi-Umebayashi M, Riezman H, Roux A, Sakai N, Matile S. Amphiphilic dynamic NDI and PDI probes: imaging microdomains in giant unilamellar vesicles. Org Biomol Chem 2012; 10:6087-93. [DOI: 10.1039/c2ob25119a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Affiliation(s)
| | | | | | | | | | - Howard Riezman
- School of Chemistry and Biochemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | | | - Stefan Matile
- School of Chemistry and Biochemistry, University of Geneva, CH-1211 Geneva, Switzerland.
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Fin A, Petkova I, Doval DA, Sakai N, Vauthey E, Matile S. Naphthalene- and perylenediimides with hydroquinones, catechols, boronic esters and imines in the core. Org Biomol Chem 2011; 9:8246-52. [PMID: 21879124 DOI: 10.1039/c1ob05702b] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The green-fluorescent protein of the jellyfish operates with the most powerful phenolate donors in the push-pull fluorophore. To nevertheless achieve red fluorescence with the same architecture, sea anemone and corals apply oxidative imination, a process that accounts for the chemistry of vision as well. The objective of this study was to apply these lessons from nature to one of the most compact family of panchromatic fluorophores, i.e. core-substituted naphthalenediimides (cNDIs). We report straightforward synthetic access to hydroxylated cNDI and cPDI cores by palladium-catalyzed cleavage of allyloxy substituents. With hydroxylated cNDIs but not cPDIs in water-containing media, excited-state intramolecular proton transfer yields a second bathochromic emission. Deprotonation of hydroquinone, catechol and boronic ester cores provides access to an impressive panchromism up to the NIR frontier at 640 nm. With cNDIs, oxidative imination gives red shifts up to 638 nm, whereas the expanded cPDIs already absorb at 754 nm upon deprotonation of hydroquinone cores. The practical usefulness of hydroquinone cNDIs is exemplified by ratiometric sensing of the purity of DMF with the "naked eye" at a sensitivity far beyond the "naked nose". We conclude that the panchromatic hypersensitivity toward the environment of the new cNDIs is ideal for pattern generation in differential sensing arrays.
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Affiliation(s)
- Andrea Fin
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
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Doval DA, Areephong J, Bang EK, Bertone L, Charbonnaz P, Fin A, Lin NT, Lista M, Matile S, Montenegro J, Orentas E, Sakai N, Tran DH, Jentzsch AV. Recent progress with functional biosupramolecular systems. Langmuir 2011; 27:9696-9705. [PMID: 21488621 DOI: 10.1021/la200593p] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The objective of this account is to summarize our recent progress with functional biosupramolecular systems concisely. The functions covered are artificial photosynthesis, anion transport, and sensing in lipid bilayer membranes. With artificial photosynthesis, the current emphasis is on the construction of ordered and oriented architectures on solid surfaces. Recent examples include the zipper assembly of photosystems with supramolecular n/p-heterojunctions and oriented antiparallel redox gradients. Current transport systems in lipid bilayers reveal new interactions at work. Examples include anion-macrodipole or anion-π interactions. Current attention with membrane-based sensing systems shifts from biosensor approaches with enzymatic signal generation to aptamers (i.e., the DNA version of immunosensing) and differential sensing with dynamic polyion-counterion transporters. The functional diversity accessible with biosupramolecular systems is highlighted, as is the critical importance of cross-fertilization at intertopical convergence zones.
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Affiliation(s)
- David Alonso Doval
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland
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Abstract
This critical review covers progress with synthetic transport systems, particularly ion channels and pores, between January 2006 and December 2009 in a comprehensive manner. This is the third part of a series launched in the year 2000, covering a rich collection of structural and functional motifs that should appeal to a broad audience of non-specialists, including to organic, biological, supramolecular and polymer chemists. Impressive breakthroughs have been achieved over the past four years in part because of a fruitful expansion toward new types of interactions, including metal-organic, π-π, aromatic electron donor-acceptor, anion-π or anion-macrodipole interactions as well as dynamic covalent bonds (169 references).
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Affiliation(s)
- Stefan Matile
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland.
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Montenegro J, Fin A, Matile S. Comprehensive screening of octopus amphiphiles as DNA activators in lipid bilayers: implications on transport, sensing and cellular uptake. Org Biomol Chem 2011; 9:2641-7. [DOI: 10.1039/c0ob00948b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Affiliation(s)
| | - Andrea Fin
- a Department of Organic Chemistry , University of Geneva , Geneva, Switzerland
| | - Naomi Sakai
- a Department of Organic Chemistry , University of Geneva , Geneva, Switzerland
| | - Stefan Matile
- a Department of Organic Chemistry , University of Geneva , Geneva, Switzerland
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