1
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Chiglintseva D, Clarke DJ, Sen'kova A, Heyman T, Miroshnichenko S, Shan F, Vlassov V, Zenkova M, Patutina O, Bichenkova E. Engineering supramolecular dynamics of self-assembly and turnover of oncogenic microRNAs to drive their synergistic destruction in tumor models. Biomaterials 2024; 309:122604. [PMID: 38733658 DOI: 10.1016/j.biomaterials.2024.122604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 04/11/2024] [Accepted: 05/05/2024] [Indexed: 05/13/2024]
Abstract
Rationally-engineered functional biomaterials offer the opportunity to interface with complex biology in a predictive, precise, yet dynamic way to reprogram their behaviour and correct shortcomings. Success here may lead to a desired therapeutic effect against life-threatening diseases, such as cancer. Here, we engineered "Crab"-like artificial ribonucleases through coupling of peptide and nucleic acid building blocks, capable of operating alongside and synergistically with intracellular enzymes (RNase H and AGO2) for potent destruction of oncogenic microRNAs. "Crab"-like configuration of two catalytic peptides ("pincers") flanking the recognition oligonucleotide was instrumental here in providing increased catalytic turnover, leading to ≈30-fold decrease in miRNA half-life as compared with that for "single-pincer" conjugates. Dynamic modeling of miRNA cleavage illustrated how such design enabled "Crabs" to drive catalytic turnover through simultaneous attacks at different locations of the RNA-DNA heteroduplex, presumably by producing smaller cleavage products and by providing toeholds for competitive displacement by intact miRNA strands. miRNA cleavage at the 5'-site, spreading further into double-stranded region, likely provided a synergy for RNase H1 through demolition of its loading region, thus facilitating enzyme turnover. Such synergy was critical for sustaining persistent disposal of continually-emerging oncogenic miRNAs. A single exposure to the best structural variant (Crab-p-21) prior to transplantation into mice suppressed their malignant properties and reduced primary tumor volume (by 85 %) in MCF-7 murine xenograft models.
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Affiliation(s)
- Daria Chiglintseva
- Institute of Chemical Biology and Fundamental Medicine SB RAS, 8 Lavrentiev Avenue, 630090, Novosibirsk, Russia
| | - David J Clarke
- School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | - Aleksandra Sen'kova
- Institute of Chemical Biology and Fundamental Medicine SB RAS, 8 Lavrentiev Avenue, 630090, Novosibirsk, Russia
| | - Thomas Heyman
- School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | - Svetlana Miroshnichenko
- Institute of Chemical Biology and Fundamental Medicine SB RAS, 8 Lavrentiev Avenue, 630090, Novosibirsk, Russia
| | - Fangzhou Shan
- School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | - Valentin Vlassov
- Institute of Chemical Biology and Fundamental Medicine SB RAS, 8 Lavrentiev Avenue, 630090, Novosibirsk, Russia
| | - Marina Zenkova
- Institute of Chemical Biology and Fundamental Medicine SB RAS, 8 Lavrentiev Avenue, 630090, Novosibirsk, Russia
| | - Olga Patutina
- Institute of Chemical Biology and Fundamental Medicine SB RAS, 8 Lavrentiev Avenue, 630090, Novosibirsk, Russia.
| | - Elena Bichenkova
- School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, UK.
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2
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Nardi AN, Olivieri A, D'Abramo M, Amadei A. A Theoretical-Computational Study of Phosphodiester Bond Cleavage Kinetics as a Function of the Temperature. Chemphyschem 2024; 25:e202300952. [PMID: 38372713 DOI: 10.1002/cphc.202300952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/19/2024] [Accepted: 02/19/2024] [Indexed: 02/20/2024]
Abstract
The hydrolysis of the phosphodiester bond is an important chemical reaction involved in several biological processes. Here, we study the cleavage of this bond by means of a theoretical-computational method in a model system, the dineopentyl phosphate. By such an approach, we reconstructed the kinetics and related thermodynamics of this chemical reaction along an isochore. In particular, we evaluated the kinetic constants of all the reaction steps within a wide range of temperatures, mostly corresponding to conditions where no experimental measures are available due to the extremely slow kinetics. Our results, in good agreement with the experimental data, show the robustness of our theoretical-computational methodology which can be easily extended to more complex systems.
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Affiliation(s)
| | - Alessio Olivieri
- Department of Chemistry, Sapienza University of Rome, Rome, Italy
| | - Marco D'Abramo
- Department of Chemistry, Sapienza University of Rome, Rome, Italy
| | - Andrea Amadei
- Department of Technological and Chemical Sciences, Tor Vergata University of Rome, Italy
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3
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Wang X, Shu J, Ni T, Xu C, Xu B, Liu X, Zhang K, Jiang W. Transesterification of RNA model induced by novel dinuclear copper (II) complexes with bis-tridentate imidazole derivatives. J Biol Inorg Chem 2023:10.1007/s00775-023-02000-6. [PMID: 37140680 DOI: 10.1007/s00775-023-02000-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 04/15/2023] [Indexed: 05/05/2023]
Abstract
Two novel bis-tridentate imidazole derivatives were conveniently synthesized using a 'one-pot' method. Their dinuclear (Cu2L1Cl4, Cu2L2Cl4) and mononuclear (CuL1Cl2, CuL2Cl2∙H2O) copper (II) complexes were synthesized to comparably evaluate their reactivities in the hydrolytic cleavage of 2-hydroxypropyl p-nitrophenyl phosphate (HPNP) as a classic RNA model. Single crystals of Cu2L1Cl4 and Cu2L2Cl4 indicate that both of them are centrosymmetric, and each central copper ion is penta-coordinated. Regarding the transesterification of HPNP, both of dinuclear ones exhibited excess one order of magnitude rate enhancement in contrast with auto-hydrolysis reaction. Under comparable conditions, dinuclear complexes displayed no more than twofold increase in activity over their mononuclear analogues, which verifies the lack of binuclear cooperation effect due to long Cu-to-Cu space.
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Affiliation(s)
- Xiuyang Wang
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
| | - Jun Shu
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
| | - Tong Ni
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
| | - Chengxu Xu
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
| | - Bin Xu
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Sichuan University of Science and Engineering, Sichuan, 643000, Zigong, People's Republic of China
| | - Xiaoqiang Liu
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Sichuan University of Science and Engineering, Sichuan, 643000, Zigong, People's Republic of China
| | - Kaiming Zhang
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Sichuan University of Science and Engineering, Sichuan, 643000, Zigong, People's Republic of China
| | - Weidong Jiang
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China.
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Sichuan University of Science and Engineering, Sichuan, 643000, Zigong, People's Republic of China.
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4
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Recent Advances in the Synthesis and Applications of m-Aryloxy Phenols. Molecules 2023; 28:molecules28062657. [PMID: 36985628 PMCID: PMC10056990 DOI: 10.3390/molecules28062657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/11/2023] [Accepted: 03/13/2023] [Indexed: 03/17/2023] Open
Abstract
Since phenol derivatives have high potential as building blocks for the synthesis of bioactive natural products and conducting polymers, many synthesis methods have been invented. In recent years, innovative synthetic methods have been developed for the preparation of m-aryloxy phenols, which has allowed for the preparation of complex m-aryloxy phenols with functional groups, such as esters, nitriles, and halogens, that impart specific properties of these compounds. This review provides an overview of recent advances in synthetic strategies for m-aryloxy phenols and their potential biological activities. This paper highlights the importance of m-aryloxy phenols in various industries, including plastics, adhesives, and coatings, and it discusses their applications as antioxidants, ultraviolet absorbers, and flame retardants.
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Yue J, Chen Y, Wang X, Xu B, Xu Z, Liu X, Chen Z, Zhang K, Jiang W. Artificial phosphatase upon premicellar nanoarchitectonics of lanthanum complexes with long-chained imidazole derivatives. J Colloid Interface Sci 2022; 627:459-468. [PMID: 35868041 DOI: 10.1016/j.jcis.2022.07.023] [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: 02/02/2022] [Revised: 05/17/2022] [Accepted: 07/04/2022] [Indexed: 10/17/2022]
Abstract
Four novel long chain-containing tridentate imidazole derivatives (Ln, n = 1, 2, 3, 4) were synthesized for in situ formation of mononuclear lanthanum(III) complexes as artificial phosphodiesterases. These in-situ formed La(III) complexes (named LaLn) were used to catalyze the transesterification of 2-hydroxypropyl p-nitrophenyl phosphate (HPNP), a classic RNA model. Critical aggregation concentrations (CAC) were determined for the as-prepared tridentate imidazole derivatives as ligands and corresponding mixtures of equivalent ligand and La3+ ion with a mole rate of 1:1. It denotes that the introduction of La3+ ion increases the CAC values of imidazole derivatives by about 2 to 3 folds. Foaming test shows that the foam height is positively correlated with the length of hydrophobic chain. Transesterification of HPNP mediated by LaLn nanoarchitectonics indicates that the introducing of hydrophobic chain benefits rate enhancement, showing excess three orders of magnitude acceleration under physiological conditions (pH 7.0, 25 °C). Moreover, catalytic reactivities of these La(III) complexes increased along with the increase in chain length: LaL1 < LaL2 < LaL3 < LaL4, suggesting a positive correlation to hydrophobic chain length.
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Affiliation(s)
- Jian Yue
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Sichuan, Zigong 643000, PR China
| | - Yu Chen
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Sichuan, Zigong 643000, PR China
| | - Xiuyang Wang
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Sichuan, Zigong 643000, PR China
| | - Bin Xu
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Sichuan, Zigong 643000, PR China.
| | - Zhigang Xu
- School of Pharmacy, Chongqing University of Arts and Sciences, Chongqing, Yongchuan 402160, PR China
| | - Xiaoqiang Liu
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Sichuan, Zigong 643000, PR China
| | - Zhongzhu Chen
- School of Pharmacy, Chongqing University of Arts and Sciences, Chongqing, Yongchuan 402160, PR China
| | - Kaiming Zhang
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Sichuan, Zigong 643000, PR China
| | - Weidong Jiang
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Sichuan, Zigong 643000, PR China.
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6
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Lönnberg H. Structural modifications as tools in mechanistic studies of the cleavage of RNA phosphodiester linkages. CHEM REC 2022; 22:e202200141. [PMID: 35832010 DOI: 10.1002/tcr.202200141] [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: 05/16/2022] [Revised: 06/28/2022] [Indexed: 11/06/2022]
Abstract
The cleavage of RNA phosphodiester bonds by RNase A and hammerhead ribozyme at neutral pH fundamentally differs from the spontaneous reactions of these bonds under the same conditions. While the predominant spontaneous reaction is isomerization of the 3',5'-phosphodiester linkages to their 2',5'-counterparts, this reaction has never been reported to compete with the enzymatic cleavage reaction, not even as a minor side reaction. Comparative kinetic measurements with structurally modified di-nucleoside monophosphates and oligomeric phosphodiesters have played an important role in clarification of mechanistic details of the buffer-independent and buffer-catalyzed reactions. More recently, heavy atom isotope effects and theoretical calculations have refined the picture. The primary aim of all these studies has been to form a solid basis for mechanistic analyses of the action of more complicated catalytic machineries. In other words, to contribute to conception of a plausible unified picture of RNA cleavage by biocatalysts, such as RNAse A, hammerhead ribozyme and DNAzymes. In addition, structurally modified trinucleoside monophosphates as transition state models for Group I and II introns have clarified some features of the action of large ribozymes.
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Affiliation(s)
- Harri Lönnberg
- Department of Chemistry, University of Turku, FI-20014 University of, Turku
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7
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Mahato C, Menon S, Singh A, Afrose SP, Mondal J, Das D. Short Peptide-based Cross-β Amyloids Exploit Dual Residues for Phosphoesterase like Activity. Chem Sci 2022; 13:9225-9231. [PMID: 36092997 PMCID: PMC9384705 DOI: 10.1039/d2sc03205h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 07/17/2022] [Indexed: 11/21/2022] Open
Abstract
Herein, we report that short peptides are capable of exploiting their anti-parallel registry to access cross-β stacks to expose more than one catalytic residue, exhibiting the traits of advanced binding pockets of enzymes. Binding pockets decorated with more than one catalytic residue facilitate substrate binding and process kinetically unfavourable chemical transformations. The solvent-exposed guanidinium and imidazole moieties on the cross-β microphases synergistically bind to polarise and hydrolyse diverse kinetically stable model substrates of nucleases and phosphatase. Mutation of either histidine or arginine results in a drastic decline in the rate of hydrolysis. These results not only support the argument of short amyloid peptides as the earliest protein folds but also suggest their interactions with nucleic acid congeners, foreshadowing the mutualistic biopolymer relationships that fueled the chemical emergence of life. Amyloid based short peptide assemblies use antiparallel registry to expose multiple catalytic residues to bind and cleave kinetically stable phosphoester bonds of nucleic acid congeners, foreshadowing interactions of protein folds with nucleic acids.![]()
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Affiliation(s)
- Chiranjit Mahato
- Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur West Bengal 741246 India
| | - Sneha Menon
- Tata Institute of Fundamental Research Hyderabad Telangana 500046 India
| | - Abhishek Singh
- Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur West Bengal 741246 India
| | - Syed Pavel Afrose
- Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur West Bengal 741246 India
| | - Jagannath Mondal
- Tata Institute of Fundamental Research Hyderabad Telangana 500046 India
| | - Dibyendu Das
- Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur West Bengal 741246 India
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8
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Danneberg F, Westemeier H, Horx P, Zellmann F, Dörr K, Kalden E, Zeiger M, Akpinar A, Berger R, Göbel MW. RNA Hydrolysis by Heterocyclic Amidines and Guanidines: Parameters Affecting Reactivity. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100950] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Friederike Danneberg
- Institut für Organische Chemie und Chemische Biologie Goethe-Universität Frankfurt Max-von-Laue-Str. 7 D-60438 Frankfurt am Main Germany
| | - Hauke Westemeier
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 35032 Marburg Germany
| | - Philip Horx
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 35032 Marburg Germany
| | - Felix Zellmann
- Institut für Organische Chemie und Chemische Biologie Goethe-Universität Frankfurt Max-von-Laue-Str. 7 D-60438 Frankfurt am Main Germany
| | - Kathrin Dörr
- Institut für Organische Chemie und Chemische Biologie Goethe-Universität Frankfurt Max-von-Laue-Str. 7 D-60438 Frankfurt am Main Germany
| | - Elisabeth Kalden
- Institut für Organische Chemie und Chemische Biologie Goethe-Universität Frankfurt Max-von-Laue-Str. 7 D-60438 Frankfurt am Main Germany
| | - Mirco Zeiger
- Institut für Organische Chemie und Chemische Biologie Goethe-Universität Frankfurt Max-von-Laue-Str. 7 D-60438 Frankfurt am Main Germany
| | - Abdullah Akpinar
- Institut für Organische Chemie und Chemische Biologie Goethe-Universität Frankfurt Max-von-Laue-Str. 7 D-60438 Frankfurt am Main Germany
| | - Robert Berger
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 35032 Marburg Germany
| | - Michael W. Göbel
- Institut für Organische Chemie und Chemische Biologie Goethe-Universität Frankfurt Max-von-Laue-Str. 7 D-60438 Frankfurt am Main Germany
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9
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Antipin IS, Alfimov MV, Arslanov VV, Burilov VA, Vatsadze SZ, Voloshin YZ, Volcho KP, Gorbatchuk VV, Gorbunova YG, Gromov SP, Dudkin SV, Zaitsev SY, Zakharova LY, Ziganshin MA, Zolotukhina AV, Kalinina MA, Karakhanov EA, Kashapov RR, Koifman OI, Konovalov AI, Korenev VS, Maksimov AL, Mamardashvili NZ, Mamardashvili GM, Martynov AG, Mustafina AR, Nugmanov RI, Ovsyannikov AS, Padnya PL, Potapov AS, Selektor SL, Sokolov MN, Solovieva SE, Stoikov II, Stuzhin PA, Suslov EV, Ushakov EN, Fedin VP, Fedorenko SV, Fedorova OA, Fedorov YV, Chvalun SN, Tsivadze AY, Shtykov SN, Shurpik DN, Shcherbina MA, Yakimova LS. Functional supramolecular systems: design and applications. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr5011] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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10
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Shu J, Yue J, Qiu X, Liu X, Ren W, Li Q, Li Y, Xu B, Zhang K, Jiang W. Binuclear metal complexes with a novel hexadentate imidazole derivative for the cleavage of phosphate diesters and biomolecules: distinguishable mechanisms. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00108f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxidative cleavage of phosphate diesters (HPNP, BNPP) is highly faster than the hydrolytic one by binuclear metal complexes with novel imidazole derivative, producing a non-lactone phosphate monoester due to the direct attack of free radicals.
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Affiliation(s)
- Jun Shu
- School of Chemistry and Environmental Engineering
- Sichuan University of Science & Engineering
- Sichuan Zigong 643000
- P. R. China
| | - Jian Yue
- School of Chemistry and Environmental Engineering
- Sichuan University of Science & Engineering
- Sichuan Zigong 643000
- P. R. China
| | - Xin Qiu
- School of Chemistry and Environmental Engineering
- Sichuan University of Science & Engineering
- Sichuan Zigong 643000
- P. R. China
| | - Xiaoqiang Liu
- School of Chemistry and Environmental Engineering
- Sichuan University of Science & Engineering
- Sichuan Zigong 643000
- P. R. China
| | - Wang Ren
- School of Chemistry and Environmental Engineering
- Sichuan University of Science & Engineering
- Sichuan Zigong 643000
- P. R. China
| | - Qianli Li
- College of Chemistry and Chemical Engineering
- Liaocheng University
- Shandong Liaocheng 252059
- P. R. China
| | - Yulong Li
- School of Chemistry and Environmental Engineering
- Sichuan University of Science & Engineering
- Sichuan Zigong 643000
- P. R. China
| | - Bin Xu
- School of Chemistry and Environmental Engineering
- Sichuan University of Science & Engineering
- Sichuan Zigong 643000
- P. R. China
| | - Kaiming Zhang
- School of Chemistry and Environmental Engineering
- Sichuan University of Science & Engineering
- Sichuan Zigong 643000
- P. R. China
| | - Weidong Jiang
- School of Chemistry and Environmental Engineering
- Sichuan University of Science & Engineering
- Sichuan Zigong 643000
- P. R. China
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11
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Staroseletz Y, Amirloo B, Williams A, Lomzov A, Burusco KK, Clarke DJ, Brown T, Zenkova MA, Bichenkova EV. Strict conformational demands of RNA cleavage in bulge-loops created by peptidyl-oligonucleotide conjugates. Nucleic Acids Res 2020; 48:10662-10679. [PMID: 33010175 PMCID: PMC7641753 DOI: 10.1093/nar/gkaa780] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/04/2020] [Accepted: 09/15/2020] [Indexed: 12/12/2022] Open
Abstract
Potent knockdown of pathogenic RNA in vivo is an urgent health need unmet by both small-molecule and biologic drugs. ‘Smart’ supramolecular assembly of catalysts offers precise recognition and potent destruction of targeted RNA, hitherto not found in nature. Peptidyl-oligonucleotide ribonucleases are here chemically engineered to create and attack bulge-loop regions upon hybridization to target RNA. Catalytic peptide was incorporated either via a centrally modified nucleotide (Type 1) or through an abasic sugar residue (Type 2) within the RNA-recognition motif to reveal striking differences in biological performance and strict structural demands of ribonuclease activity. None of the Type 1 conjugates were catalytically active, whereas all Type 2 conjugates cleaved RNA target in a sequence-specific manner, with up to 90% cleavage from 5-nt bulge-loops (BC5-α and BC5L-β anomers) through multiple cuts, including in folds nearby. Molecular dynamics simulations provided structural explanation of accessibility of the RNA cleavage sites to the peptide with adoption of an ‘in-line’ attack conformation for catalysis. Hybridization assays and enzymatic probing with RNases illuminated how RNA binding specificity and dissociation after cleavage can be balanced to permit turnover of the catalytic reaction. This is an essential requirement for inactivation of multiple copies of disease-associated RNA and therapeutic efficacy.
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Affiliation(s)
- Yaroslav Staroseletz
- Institute of Chemical Biology and Fundamental Medicine SB RAS, 8 Laurentiev Avenue, 630090 Novosibirsk, Russia
| | - Bahareh Amirloo
- School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Aled Williams
- School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Alexander Lomzov
- Institute of Chemical Biology and Fundamental Medicine SB RAS, 8 Laurentiev Avenue, 630090 Novosibirsk, Russia
| | - Kepa K Burusco
- School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - David J Clarke
- School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Tom Brown
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Marina A Zenkova
- Institute of Chemical Biology and Fundamental Medicine SB RAS, 8 Laurentiev Avenue, 630090 Novosibirsk, Russia
| | - Elena V Bichenkova
- School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester M13 9PT, UK
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12
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Del Giudice D, Spatola E, Cacciapaglia R, Casnati A, Baldini L, Ercolani G, Di Stefano S. Time Programmable Locking/Unlocking of the Calix[4]arene Scaffold by Means of Chemical Fuels. Chemistry 2020; 26:14954-14962. [PMID: 32757429 DOI: 10.1002/chem.202002574] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/18/2020] [Indexed: 12/30/2022]
Abstract
In this work, we report that 2-cyano-2-phenylpropanoic acid and its p-Cl, p-CH3 and p-OCH3 derivatives can be used as chemical fuels to control the geometry of the calix[4]arene scaffold in its cone conformation. It is shown that, under the action of the fuel, the cone calix[4]arene platform assumes a "locked" shape with two opposite aromatic rings strongly convergent and the other two strongly divergent ("pinched cone" conformation). Only when the fuel is exhausted, the cone calix[4]arene scaffold returns to its resting, "unlocked" shape. Remarkably, the duration of the "locked" state can be controlled at will by varying the fuel structure or amount. A kinetic study of the process shows that the consume of the fuel is catalyzed by the "unlocked" calixarene that behaves as an autocatalyst for its own production. A mechanism is proposed for the reaction of fuel consumption.
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Affiliation(s)
- Daniele Del Giudice
- Dipartimento di Chimica, Università di Roma La Sapienza and ISB-CNR Sede Secondaria di Roma-Meccanismi di Reazione, P.le A. Moro 5, 00185, Roma, Italy
| | - Emanuele Spatola
- Dipartimento di Chimica, Università di Roma La Sapienza and ISB-CNR Sede Secondaria di Roma-Meccanismi di Reazione, P.le A. Moro 5, 00185, Roma, Italy
| | - Roberta Cacciapaglia
- Dipartimento di Chimica, Università di Roma La Sapienza and ISB-CNR Sede Secondaria di Roma-Meccanismi di Reazione, P.le A. Moro 5, 00185, Roma, Italy
| | - Alessandro Casnati
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità, Ambientale, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Laura Baldini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità, Ambientale, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Gianfranco Ercolani
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Roma, Italy
| | - Stefano Di Stefano
- Dipartimento di Chimica, Università di Roma La Sapienza and ISB-CNR Sede Secondaria di Roma-Meccanismi di Reazione, P.le A. Moro 5, 00185, Roma, Italy
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13
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Salvio R, D'Abramo M. Conformational Mobility and Efficiency in Supramolecular Catalysis. A Computational Approach to Evaluate the Performances of Enzyme Mimics. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Riccardo Salvio
- Dipartimento di Scienze e Tecnologie Chimiche Università degli Studi di Roma “Tor Vergata” Via della Ricerca Scientifica 1 00133 Roma Italy
- ISB CNR Sezione Meccanismi di Reazione Università degli Studi di Roma La Sapienza 00185 Roma Italy
| | - Marco D'Abramo
- Dipartimento di Chimica Università degli Studi di Roma La Sapienza P. le Aldo Moro 5 00185 Roma Italy
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14
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Ren CZJ, Solís-Muñana P, Warr GG, Chen JLY. Dynamic and Modular Formation of a Synergistic Transphosphorylation Catalyst. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01321] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Chloe Z.-J. Ren
- Centre for Biomedical and Chemical Sciences, School of Science, Auckland University of Technology, Auckland 1010, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Pablo Solís-Muñana
- Centre for Biomedical and Chemical Sciences, School of Science, Auckland University of Technology, Auckland 1010, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Gregory G. Warr
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Jack L.-Y. Chen
- Centre for Biomedical and Chemical Sciences, School of Science, Auckland University of Technology, Auckland 1010, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand
- Department of Biotechnology, Chemistry and Pharmaceutical Sciences, Università degli Studi di Siena, 53100 Siena, Italy
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15
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Baldini L, Casnati A, Sansone F. Multivalent and Multifunctional Calixarenes in Bionanotechnology. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000255] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Laura Baldini
- Department of Chemistry Life Sciences and Environmental Sustainability University of Parma Parco Area delle Scienze, 17/a 43124 Parma Italy
| | - Alessandro Casnati
- Department of Chemistry Life Sciences and Environmental Sustainability University of Parma Parco Area delle Scienze, 17/a 43124 Parma Italy
| | - Francesco Sansone
- Department of Chemistry Life Sciences and Environmental Sustainability University of Parma Parco Area delle Scienze, 17/a 43124 Parma Italy
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16
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Gebrezgiabher M, Zalloum WA, Clarke DJ, Miles SM, Fedorova AA, Zenkova MA, Bichenkova EV. RNA knockdown by synthetic peptidyl-oligonucleotide ribonucleases: behavior of recognition and cleavage elements under physiological conditions. J Biomol Struct Dyn 2020; 39:2555-2574. [PMID: 32248755 DOI: 10.1080/07391102.2020.1751711] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Sequence-specific protein-based ribonucleases are not found in nature. Absolute sequence selectivity in RNA cleavage in vivo normally requires multi-component complexes that recruit a guide RNA or DNA for target recognition and a protein-RNA assembly for catalytic functioning (e.g. RNAi molecular machinery, RNase H). Recently discovered peptidyl-oligonucleotide synthetic ribonucleases selectively knock down pathogenic RNAs by irreversible cleavage to offer unprecedented opportunities for control of disease-relevant RNA. Understanding how to increase their potency, selectivity and catalytic turnover will open the translational pathway to successful therapeutics. Yet, very little is known about how these chemical ribonucleases bind, cleave and leave their target. Rational design awaits this understanding in order to control therapy, particularly how to overcome the trade-off between sequence specificity and potency through catalytic turnover. We illuminate this here by characterizing the interactions of these chemical RNases with both complementary and non-complementary RNAs using Tm profiles, fluorescence, UV-visible and NMR spectroscopies. Crucially, the level of counter cations, which are tightly-controlled within cellular compartments, also controlled these interactions. The oligonucleotide component dominated interaction between conjugates and complementary targets in the presence of physiological levels of counter cations (K+), sufficient to prevent repulsion between the complementary nucleic acid strands to allow Watson-Crick hydrogen bonding. In contrast, the positively-charged catalytic peptide interacted poorly with target RNA, when counter cations similarly screened the negatively-charged sugar-phosphate RNA backbones. The peptide only became the key player, when counter cations were insufficient for charge screening; moreover, only under such non-physiological conditions did conjugates form strong complexes with non-complementary RNAs.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mengisteab Gebrezgiabher
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Waleed A Zalloum
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - David J Clarke
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Steven M Miles
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Antonina A Fedorova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Marina A Zenkova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Elena V Bichenkova
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
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17
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Hymel JH, Townsend J, Vogiatzis KD. CO 2 Capture on Functionalized Calixarenes: A Computational Study. J Phys Chem A 2019; 123:10116-10122. [PMID: 31670513 DOI: 10.1021/acs.jpca.9b08670] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
High carbon emissions have shown a strong correlation with rising global temperatures as the world's climate undergoes a dramatic shift. Work to mitigate the potential damage using materials such as metal-organic frameworks (MOFs), covalent organic frameworks (COFs), and polymer membranes (PMs) has proven successful in small-scale approaches; however, research is still being performed to enhance the capabilities of these materials for use at an industrial scale. One strategy for increasing performance is to embed these materials with CO2-philic molecules, which enhance selective binding over other gases. Calixarenes are promising candidates due to their large chalice shape, which allows for the possibility to bind multiple CO2 molecules per site. In this study, a dataset including 40 functionalized calixarene structures and one unfunctionalized (bare) calixarene was constructed with an automated, high-throughput structure generation through directed modifications to a molecular scaffold. A conformational search based on molecular mechanics allowed the faster determination of optimal binding energies for a vast array of chemical functional groups with less computational effort. Density functional theory and symmetry-adapted perturbation theory calculations were performed for the exploration of their interactions with CO2. Our work has identified new organic cages with increased CO2-philicity. In four cases, CO2 binding is stronger than 9.0 kcal/mol and very close to the targets set by previous studies. The nature of the noncovalent interactions for these cases is analyzed and discussed. Conclusions from this study can aid synthetic efforts for the next generation of functional materials.
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Affiliation(s)
- John H Hymel
- Department of Chemistry , University of Tennessee , Knoxville , Tennessee 37996-1600 , United States
| | - Jacob Townsend
- Department of Chemistry , University of Tennessee , Knoxville , Tennessee 37996-1600 , United States
| | - Konstantinos D Vogiatzis
- Department of Chemistry , University of Tennessee , Knoxville , Tennessee 37996-1600 , United States
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18
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Dobscha JR, Castillo HD, Li Y, Fadler RE, Taylor RD, Brown AA, Trainor CQ, Tait SL, Flood AH. Sequence-Defined Macrocycles for Understanding and Controlling the Build-up of Hierarchical Order in Self-Assembled 2D Arrays. J Am Chem Soc 2019; 141:17588-17600. [PMID: 31503483 PMCID: PMC7461245 DOI: 10.1021/jacs.9b06410] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Anfinsen's dogma that sequence dictates structure is fundamental to understanding the activity and assembly of proteins. This idea has been applied to all manner of oligomers but not to the behavior of cyclic oligomers, aka macrocycles. We do this here by providing the first proofs that sequence controls the hierarchical assembly of nonbiological macrocycles, in this case, at graphite surfaces. To design macrocycles with one (AAA), two (AAB), or three (ABC) different carbazole units, we needed to subvert the synthetic preferences for one-pot macrocyclizations. We developed a new stepwise synthesis with sequence-defined targets made in 11, 17, and 22 steps with 25, 10, and 5% yields, respectively. The linear build up of primary sequence (1°) also enabled a thermal Huisgen cycloaddition to proceed regioselectively for the first time using geometric control. The resulting macrocycles are planar (2° structure) and form H-bonded dimers (3°) at surfaces. Primary sequences encoded into the suite of tricarb macrocycles were shown by scanning-tunneling microscopy (STM) to impact the next levels of supramolecular ordering (4°) and 2D crystalline polymorphs (5°) at solution-graphite interfaces. STM imaging of an AAB macrocycle revealed the formation of a new gap phase that was inaccessible using only C3-symmetric macrocycles. STM imaging of two additional sequence-controlled macrocycles (AAD, ABE) allowed us to identify the factors driving the formation of this new polymorph. This demonstration of how sequence controls the hierarchical patterning of macrocycles raises the importance of stepwise syntheses relative to one-pot macrocyclizations to offer new approaches for greater understanding and control of hierarchical assembly.
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Affiliation(s)
- James R. Dobscha
- Molecular Materials Design Laboratory, Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Henry D. Castillo
- Molecular Materials Design Laboratory, Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Yan Li
- Molecular Materials Design Laboratory, Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Rachel E. Fadler
- Molecular Materials Design Laboratory, Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Rose D. Taylor
- Molecular Materials Design Laboratory, Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Andrew A. Brown
- Molecular Materials Design Laboratory, Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Colleen Q. Trainor
- Molecular Materials Design Laboratory, Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Steven L. Tait
- Molecular Materials Design Laboratory, Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Amar H. Flood
- Molecular Materials Design Laboratory, Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
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19
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Andreyko EA, Puplampu JB, Ignacio-De Leon PA, Zharov I, Stoikov II. p-tert-Butylthiacalix[4]arenes containing guanidinium groups: synthesis and self-assembly into nanoscale aggregates. Supramol Chem 2019. [DOI: 10.1080/10610278.2019.1628231] [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: 10/26/2022]
Affiliation(s)
- Elena A. Andreyko
- A. M. Butlerov Chemistry Institute, Kazan Federal University, Kazan, Russian Federation
| | - Joshua B. Puplampu
- A. M. Butlerov Chemistry Institute, Kazan Federal University, Kazan, Russian Federation
| | | | - Ilya Zharov
- A. M. Butlerov Chemistry Institute, Kazan Federal University, Kazan, Russian Federation
- Department of Chemistry, University of Utah, Salt Lake City, UT, USA
| | - Ivan I. Stoikov
- A. M. Butlerov Chemistry Institute, Kazan Federal University, Kazan, Russian Federation
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20
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Salvio R, Volpi S, Folcarelli T, Casnati A, Cacciapaglia R. A calix[4]arene with acylguanidine units as an efficient catalyst for phosphodiester bond cleavage in RNA and DNA model compounds. Org Biomol Chem 2019; 17:7482-7492. [DOI: 10.1039/c9ob01141b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Conjugated carbonyl units in a calixarene scaffold provide the right amount of flexibility for catalysis with a minimum entropic cost.
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Affiliation(s)
- Riccardo Salvio
- Dipartimento di Scienze e Tecnologie Chimiche
- Università “Tor Vergata”
- I-00133 Roma
- Italy
- ISB - CNR Sezione Meccanismi di Reazione
| | - Stefano Volpi
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università degli Studi di Parma
- 43124 Parma
- Italy
| | | | - Alessandro Casnati
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università degli Studi di Parma
- 43124 Parma
- Italy
| | - Roberta Cacciapaglia
- ISB - CNR Sezione Meccanismi di Reazione
- Università La Sapienza
- 00185 Roma
- Italy
- Dipartimento di Chimica
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21
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Berrocal JA, Baker MB, Baldini L, Casnati A, Di Stefano S. Inherently chiral cone-calix[4]arenes via a subsequent upper rim ring-closing/opening methodology. Org Biomol Chem 2018; 16:7255-7264. [PMID: 30259046 DOI: 10.1039/c8ob01813h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Access to chiral calix[4]arenes can unlock novel supramolecular architectures for enantioselective catalysis and molecular recognition. However, accessibility to these structures has been significantly hindered so far. We report herein the synthesis and characterization of di- and trifunctionalized cone-calix[4]arenes featuring a lactone moiety spanning the distal positions at the upper rim. The lactones force the whole skeleton to assume pinched-cone conformations. The ring-closure is favored by the high conformational flexibility of the calixarene scaffold. The new lactones are remarkably stable in the solid state, while a quick hydrolysis to restore the parent carboxylic acids occurs in solution under acidic/basic conditions. Slow aminolyses of lactones 2-3 yield inherently chiral products featuring three different functionalities at the upper rim, at room temperature. The subsequent ring-closing/opening methodology presented here highlights the versatility of these lactones as powerful synthons for the preparation of a variety of threefold upper rim functionalized, inherently chiral calix[4]arenes fixed in the cone structure.
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Affiliation(s)
- José Augusto Berrocal
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, the Netherlands.
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22
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Mikkola S, Lönnberg T, Lönnberg H. Phosphodiester models for cleavage of nucleic acids. Beilstein J Org Chem 2018; 14:803-837. [PMID: 29719577 PMCID: PMC5905247 DOI: 10.3762/bjoc.14.68] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 03/12/2018] [Indexed: 12/12/2022] Open
Abstract
Nucleic acids that store and transfer biological information are polymeric diesters of phosphoric acid. Cleavage of the phosphodiester linkages by protein enzymes, nucleases, is one of the underlying biological processes. The remarkable catalytic efficiency of nucleases, together with the ability of ribonucleic acids to serve sometimes as nucleases, has made the cleavage of phosphodiesters a subject of intensive mechanistic studies. In addition to studies of nucleases by pH-rate dependency, X-ray crystallography, amino acid/nucleotide substitution and computational approaches, experimental and theoretical studies with small molecular model compounds still play a role. With small molecules, the importance of various elementary processes, such as proton transfer and metal ion binding, for stabilization of transition states may be elucidated and systematic variation of the basicity of the entering or departing nucleophile enables determination of the position of the transition state on the reaction coordinate. Such data is important on analyzing enzyme mechanisms based on synergistic participation of several catalytic entities. Many nucleases are metalloenzymes and small molecular models offer an excellent tool to construct models for their catalytic centers. The present review tends to be an up to date summary of what has been achieved by mechanistic studies with small molecular phosphodiesters.
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Affiliation(s)
- Satu Mikkola
- Department of Chemistry, University of Turku, FIN-20014 Turku, Finland
| | - Tuomas Lönnberg
- Department of Chemistry, University of Turku, FIN-20014 Turku, Finland
| | - Harri Lönnberg
- Department of Chemistry, University of Turku, FIN-20014 Turku, Finland
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23
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Mayer F, Tiruvadi Krishnan S, Schühle DT, Eliseeva SV, Petoud S, Tóth É, Djanashvili K. Luminescence Properties of Self-Aggregating Tb III-DOTA-Functionalized Calix[4]arenes. Front Chem 2018; 6:1. [PMID: 29441345 PMCID: PMC5797610 DOI: 10.3389/fchem.2018.00001] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 01/03/2018] [Indexed: 01/09/2023] Open
Abstract
Self-aggregating calix[4]arenes carrying four DOTA ligands on the upper rim for stable complexation of paramagnetic GdIII-ions have already been proposed as MRI probes. In this work, we investigate the luminescence properties of TbIII-DOTA-calix[4]arene-4OPr containing four propyl-groups and compare them with those of the analog substituted with a phthalimide chromophore (TbIII-DOTA-calix[4]arene-3OPr-OPhth). We show that, given its four aromatic rings, the calix[4]arene core acts as an effective sensitizer of Tb-centered luminescence. Substituents on the lower rim can modulate the aggregation behavior, which in turn determines the luminescence properties of the compounds. In solid state, the quantum yield of the phthalimide derivative is almost three times as high as that of the propyl-functionalized analog demonstrating a beneficial role of the chromophore on Tb-luminescence. In solution, however, the effect of the phthalimide group vanishes, which we attribute to the large distance between the chromophore and the lanthanide, situated on the opposite rims of the calix[4]arene. Both quantum yields and luminescence lifetimes show clear concentration dependence in solution, related to the strong impact of aggregation on the luminescence behavior. We also evidence the variability in the values of the critical micelle concentration depending on the experimental technique. Such luminescent calix[4]arene platforms accommodating stable lanthanide complexes can be considered valuable building blocks for the design of dual MR/optical imaging probes.
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Affiliation(s)
- Florian Mayer
- Department of Biotechnology, Delft University of Technology, Delft, Netherlands
| | | | - Daniel T. Schühle
- Department of Biotechnology, Delft University of Technology, Delft, Netherlands
| | - Svetlana V. Eliseeva
- Centre de Biophysique Moléculaire, UPR 4301 Centre National de la Recherche Scientifique, Université d'Orléans, Orléans, France
| | - Stéphane Petoud
- Centre de Biophysique Moléculaire, UPR 4301 Centre National de la Recherche Scientifique, Université d'Orléans, Orléans, France
| | - Éva Tóth
- Centre de Biophysique Moléculaire, UPR 4301 Centre National de la Recherche Scientifique, Université d'Orléans, Orléans, France
| | - Kristina Djanashvili
- Department of Biotechnology, Delft University of Technology, Delft, Netherlands
- Centre de Biophysique Moléculaire, UPR 4301 Centre National de la Recherche Scientifique, Université d'Orléans, Orléans, France
- Le Studium, Loire Valley Institute for Advanced Studies, Orléans, France
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24
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Salvio R, Casnati A. Guanidinium Promoted Cleavage of Phosphoric Diesters: Kinetic Investigations and Calculations Provide Indications on the Operating Mechanism. J Org Chem 2017; 82:10461-10469. [DOI: 10.1021/acs.joc.7b01925] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Riccardo Salvio
- Dipartimento
di Chimica and IMC - CNR Sezione Meccanismi di Reazione, Università La Sapienza, 00185 Roma, Italy
| | - Alessandro Casnati
- Dipartimento
di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università degli Studi di Parma, Viale delle Scienze 17/A, 43124 Parma, Italy
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25
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Sestito SE, Facchini FA, Morbioli I, Billod JM, Martin-Santamaria S, Casnati A, Sansone F, Peri F. Amphiphilic Guanidinocalixarenes Inhibit Lipopolysaccharide (LPS)- and Lectin-Stimulated Toll-like Receptor 4 (TLR4) Signaling. J Med Chem 2017; 60:4882-4892. [PMID: 28471658 DOI: 10.1021/acs.jmedchem.7b00095] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We recently reported on the activity of cationic amphiphiles in inhibiting TLR4 activation and subsequent production of inflammatory cytokines in cells and in animal models. Starting from the assumption that opportunely designed cationic amphiphiles can behave as CD14/MD-2 ligands and therefore modulate the TLR4 signaling, we present here a panel of amphiphilic guanidinocalixarenes whose structure was computationally optimized to dock into MD-2 and CD14 binding sites. Some of these calixarenes were active in inhibiting, in a dose-dependent way, the LPS-stimulated TLR4 activation and TLR4-dependent cytokine production in human and mouse cells. Moreover, guanidinocalixarenes also inhibited TLR4 signaling when TLR4 was activated by a non-LPS stimulus, the plant lectin PHA. While the activity of guanidinocalixarenes in inhibiting LPS toxic action has previously been related to their capacity to bind LPS, we suggest a direct antagonist effect of calixarenes on TLR4/MD-2 dimerization, pointing at the calixarene moiety as a potential scaffold for the development of new TLR4-directed therapeutics.
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Affiliation(s)
- Stefania E Sestito
- Department of Biotechnology and Biosciences, University of Milano-Bicocca , Piazza della Scienza, 2, 20126 Milano, Italy
| | - Fabio A Facchini
- Department of Biotechnology and Biosciences, University of Milano-Bicocca , Piazza della Scienza, 2, 20126 Milano, Italy
| | - Ilaria Morbioli
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma , Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | - Jean-Marc Billod
- Department of Chemical and Physical Biology, Centro de Investigaciones Biologicas, CIB-CSIC , C/Ramiro de Maeztu, 9, 28040 Madrid, Spain
| | - Sonsoles Martin-Santamaria
- Department of Chemical and Physical Biology, Centro de Investigaciones Biologicas, CIB-CSIC , C/Ramiro de Maeztu, 9, 28040 Madrid, Spain
| | - Alessandro Casnati
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma , Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | - Francesco Sansone
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma , Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | - Francesco Peri
- Department of Biotechnology and Biosciences, University of Milano-Bicocca , Piazza della Scienza, 2, 20126 Milano, Italy
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26
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Jana S, Al-huniti MH, Yang BY, Lu S, Pike VW, Lepore SD. Crown Ether Nucleophilic Catalysts (CENCs): Agents for Enhanced Silicon Radiofluorination. J Org Chem 2017; 82:2329-2335. [PMID: 28171724 PMCID: PMC5580262 DOI: 10.1021/acs.joc.6b02457] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
New bifunctional phase transfer agents were synthesized and investigated for their abilities to promote rapid fluorination at silicon. These agents, dubbed crown ether nucleophilic catalysts (CENCs), are 18-crown-6 derivatives containing a side-arm and a potentially nucleophilic hydroxyl group. These CENCs proved efficacious in the fluorination of hindered silicon substrates, with fluorination yields dependent on the length of linker connecting the metal chelating unit to the hydroxyl group. The efficacy of these CENCs was also demonstrated for rapid radiofluorination under mild conditions for eventual application in molecular imaging with positron emission tomography (PET). The hydrolysis-resistant aryl silicon fragment is promising as a convenient synthon for labeling potential PET radiotracers.
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Affiliation(s)
- Susovan Jana
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431-0991
| | - Mohammed H. Al-huniti
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431-0991
| | - Bo Yeun Yang
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892-1003
| | - Shuiyu Lu
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892-1003
| | - Victor W. Pike
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892-1003
| | - Salvatore D. Lepore
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431-0991
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27
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Wang HX, Hu SZ, Meng Z, Han Y, Chen CF. Synthesis and Structures of Triptycene-Derived Oxacalixarenes with Expanded Cavities: Tunable and Switchable Complexation towards Bipyridinium Salts. Chem Asian J 2016; 11:2756-2762. [PMID: 27167105 DOI: 10.1002/asia.201600419] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Indexed: 12/31/2022]
Abstract
New triptycene-derived oxacalixarene H1 was efficiently synthesized by a template cyclization step, and anilino-substituted macrocycle H2 was subsequently afforded through straightforward nucleophilic displacement of the active chlorine atom in H1. Oxacalixarene H1 adopts a fixed boat-like 1,3-alternate conformation and shows moderate complexation abilities towards various bipyridinium salts. However, the affinities of H2 towards the guests were found to be substantially stronger, which could be tentatively attributed to the additional hydrogen-bonding site, π-π stacking site, and especially the increased electron richness of the host. Furthermore, the acid-base switchable complexation process between H1 and the bipyridinium salt was also realized, which could potentially facilitate the construction of high-level stimuli-responsive supramolecular structures based on the newly synthesized oxacalixarene.
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Affiliation(s)
- Han-Xiao Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shu-Zhen Hu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Zheng Meng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ying Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Chuan-Feng Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
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28
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Salvio R, Volpi S, Cacciapaglia R, Sansone F, Mandolini L, Casnati A. Phosphoryl Transfer Processes Promoted by a Trifunctional Calix[4]arene Inspired by DNA Topoisomerase I. J Org Chem 2016; 81:9012-9019. [DOI: 10.1021/acs.joc.6b01643] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Riccardo Salvio
- Dipartimento
di Chimica and IMC - CNR Sezione Meccanismi di Reazione, Universitá La Sapienza, 00185 Rome, Italy
| | - Stefano Volpi
- Dipartimento
di Chimica, Universitá degli Studi di Parma, Viale delle
Scienze 17/A, 43124 Parma, Italy
| | - Roberta Cacciapaglia
- Dipartimento
di Chimica and IMC - CNR Sezione Meccanismi di Reazione, Universitá La Sapienza, 00185 Rome, Italy
| | - Francesco Sansone
- Dipartimento
di Chimica, Universitá degli Studi di Parma, Viale delle
Scienze 17/A, 43124 Parma, Italy
| | - Luigi Mandolini
- Dipartimento
di Chimica and IMC - CNR Sezione Meccanismi di Reazione, Universitá La Sapienza, 00185 Rome, Italy
| | - Alessandro Casnati
- Dipartimento
di Chimica, Universitá degli Studi di Parma, Viale delle
Scienze 17/A, 43124 Parma, Italy
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29
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Turočkin A, Honeker R, Raven W, Selig P. Synthesis of Chiral Bicyclic Guanidinium Salts using Di(imidazole-1-yl)methanimine. J Org Chem 2016; 81:4516-29. [DOI: 10.1021/acs.joc.6b00283] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aleksej Turočkin
- Institute of Organic Chemistry and ‡Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Roman Honeker
- Institute of Organic Chemistry and ‡Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - William Raven
- Institute of Organic Chemistry and ‡Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Philipp Selig
- Institute of Organic Chemistry and ‡Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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30
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Salvio R, Volpi S, Cacciapaglia R, Sansone F, Mandolini L, Casnati A. Upper Rim Bifunctional cone-Calix[4]arenes Based on a Ligated Metal Ion and a Guanidinium Unit as DNAase and RNAase Mimics. J Org Chem 2016; 81:4728-35. [DOI: 10.1021/acs.joc.6b00644] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Riccardo Salvio
- Dipartimento
di Chimica and IMC - CNR Sezione Meccanismi di Reazione, Università La Sapienza, 00185 Roma, Italy
| | - Stefano Volpi
- Dipartimento
di Chimica, Università degli Studi di Parma, Parco Area
delle Scienze 17/a, 43124 Parma, Italy
| | - Roberta Cacciapaglia
- Dipartimento
di Chimica and IMC - CNR Sezione Meccanismi di Reazione, Università La Sapienza, 00185 Roma, Italy
| | - Francesco Sansone
- Dipartimento
di Chimica, Università degli Studi di Parma, Parco Area
delle Scienze 17/a, 43124 Parma, Italy
| | - Luigi Mandolini
- Dipartimento
di Chimica and IMC - CNR Sezione Meccanismi di Reazione, Università La Sapienza, 00185 Roma, Italy
| | - Alessandro Casnati
- Dipartimento
di Chimica, Università degli Studi di Parma, Parco Area
delle Scienze 17/a, 43124 Parma, Italy
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31
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Salvio R, Moliterno M, Caramelli D, Pisciottani L, Antenucci A, D'Amico M, Bella M. Kinetic resolution of phosphoric diester by Cinchona alkaloid derivatives provided with a guanidinium unit. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01208b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cinchona alkaloid derivatives featuring a guanidinium group in diverse positions efficiently catalyze the cleavage of the RNA model compound 2-hydroxypropyl p-nitrophenyl phosphate (HPNP).
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Affiliation(s)
- Riccardo Salvio
- Dipartimento di Chimica
- Università di Roma – Sapienza
- Italy
- IMC-CNR Sezione Meccanismi di Reazione
- Università di Roma – Sapienza
| | | | | | | | | | | | - Marco Bella
- Dipartimento di Chimica
- Università di Roma – Sapienza
- Italy
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32
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Giuliani M, Morbioli I, Sansone F, Casnati A. Moulding calixarenes for biomacromolecule targeting. Chem Commun (Camb) 2015; 51:14140-59. [PMID: 26286064 DOI: 10.1039/c5cc05204a] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
After their successful use as a preorganized platform for the preparation of receptors for metal ions and small neutral molecules over the last 15 years, calixarenes are enjoying a renaissance of popularity as scaffolds for ligands that are able to efficiently and selectively target macromolecules such as proteins/enzymes, nucleic acids and lipids. This feature article summarizes the peculiar factors characterizing the calixarene structure and properties, as well as outlines the main rules that can be used to turn such macrocycles into efficient and successful ligands for these classes of biomacromolecules. Factors that affect the multivalent properties of calixarenes, such as the size, conformation and stereochemical presentation of binding groups or their amphiphilicity and hybrid character, are described in detail with the use of a few selected examples from the literature. Perspectives and applications of these ligands in bionanotechnology and nanomedicine, such as protein sensing and inhibition, gene-delivery, targeted drug-delivery and cell imaging, are also discussed.
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Affiliation(s)
- Marta Giuliani
- Dip. to di Chimica, Università di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy.
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33
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Cho B, Wong MW. Unconventional Bifunctional Lewis-Brønsted Acid Activation Mode in Bicyclic Guanidine-Catalyzed Conjugate Addition Reactions. Molecules 2015; 20:15108-21. [PMID: 26295222 PMCID: PMC6331857 DOI: 10.3390/molecules200815108] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 06/03/2015] [Accepted: 08/10/2015] [Indexed: 01/26/2023] Open
Abstract
DFT calculations have demonstrated that the unconventional bifunctional Brønsted-Lewis acid activation mode is generally applicable to a range of nucleophilic conjugate additions catalyzed by bicyclic guanidine catalysts. It competes readily with the conventional bifunctional Brønsted acid mode of activation. The optimal pro-nucleophiles for this unconventional bifunctional activation are acidic substrates with low pKa, while the best electrophiles are flexible 1,4-diamide and 1,4-diester conjugated systems.
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Affiliation(s)
- Bokun Cho
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
| | - Ming Wah Wong
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
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34
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Synthesis of guanidinylated chitosan with the aid of multiple protecting groups and investigation of antibacterial activity. Carbohydr Polym 2015; 127:407-17. [DOI: 10.1016/j.carbpol.2015.03.061] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 02/22/2015] [Accepted: 03/14/2015] [Indexed: 01/30/2023]
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35
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Salvio R, Volpi S, Cacciapaglia R, Casnati A, Mandolini L, Sansone F. Ribonuclease Activity of an Artificial Catalyst That Combines a Ligated CuII Ion and a Guanidinium Group at the Upper Rim of a cone-Calix[4]arene Platform. J Org Chem 2015; 80:5887-93. [DOI: 10.1021/acs.joc.5b00965] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Riccardo Salvio
- Dipartimento
di Chimica and IMC−CNR Sezione Meccanismi di Reazione, Università La Sapienza, 00185 Roma, Italy
| | - Stefano Volpi
- Dipartimento
di Chimica, Università degli Studi di Parma, Viale delle
Scienze 17/A, 43124 Parma, Italy
| | - Roberta Cacciapaglia
- Dipartimento
di Chimica and IMC−CNR Sezione Meccanismi di Reazione, Università La Sapienza, 00185 Roma, Italy
| | - Alessandro Casnati
- Dipartimento
di Chimica, Università degli Studi di Parma, Viale delle
Scienze 17/A, 43124 Parma, Italy
| | - Luigi Mandolini
- Dipartimento
di Chimica and IMC−CNR Sezione Meccanismi di Reazione, Università La Sapienza, 00185 Roma, Italy
| | - Francesco Sansone
- Dipartimento
di Chimica, Università degli Studi di Parma, Viale delle
Scienze 17/A, 43124 Parma, Italy
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36
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Salvio R. The guanidinium unit in the catalysis of phosphoryl transfer reactions: from molecular spacers to nanostructured supports. Chemistry 2015; 21:10960-71. [PMID: 25940903 DOI: 10.1002/chem.201500789] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Examples of guanidinium-based artificial phosphodiesterases are illustrated in this review article. A wide set of collected catalytic systems are presented, from the early examples to the most recent developments of the use of this unit in the design of supramolecular catalysts. Special attention is dedicated to illustrate the operating catalytic mechanism and the role of guanidine/ium units in the catalysis. One or more of these units can act by themselves or in conjunction with other active units. The analogy with the mechanism of enzymatic systems is presented and discussed. In the last part of this overview, recent examples of guanidinophosphodiesterases based on nanostructured supports are reported, namely gold-monolayer-protected clusters and polymer brushes grafted to silica nanoparticles. The issue of the dependence of the catalytic performance on the preorganization of the spacer is tackled and discussed in terms of effective molarity, a parameter that can be taken as a quantitative measurement of this preorganization for both conventional molecular linker and nanosized supports.
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Affiliation(s)
- Riccardo Salvio
- Dipartimento di Chimica and IMC-CNR, Sezione Meccanismi di Reazione, La Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 (Italy).
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37
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Savelli C, Salvio R. Guanidine-Based Polymer Brushes Grafted onto Silica Nanoparticles as Efficient Artificial Phosphodiesterases. Chemistry 2015; 21:5856-63. [DOI: 10.1002/chem.201406526] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Indexed: 12/20/2022]
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38
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Sayin S, Azak H, Yildiz HB, Camurlu P, Akkus GU, Toppare L, Ersoz M. Calixarene assembly with enhanced photocurrents using P(SNS-NH2)/CdS nanoparticle structure modified Au electrode systems. Phys Chem Chem Phys 2015; 17:19911-8. [DOI: 10.1039/c5cp01932j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two novel calix[n]arene-adorned gold electrodes producing high photocurrent intensities were successfully constructed.
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Affiliation(s)
- Serkan Sayin
- Department of Environmental Engineering
- Faculty of Engineering
- Giresun University
- Giresun-28200
- Turkey
| | - Hacer Azak
- Department of Chemistry
- Karamanoglu Mehmetbey University
- 70100 Karaman
- Turkey
| | - Huseyin Bekir Yildiz
- Department of Materials Science and Nanotechnology Engineering
- KTO Karatay University
- 42020 Konya
- Turkey
| | - Pinar Camurlu
- Department of Chemistry
- Akdeniz University
- 07058 Antalya
- Turkey
| | - Gulderen Uysal Akkus
- Department of Chemistry
- Faculty of Art and Science
- Afyon Kocatepe University
- Afyonkarahisar
- Turkey
| | - Levent Toppare
- The Center for Solar Energy Research and Application (GUNAM)
- Middle East Technical University
- Ankara 06800
- Turkey
- Department of Polymer Science and Technology
| | - Mustafa Ersoz
- Department of Chemistry
- Selcuk University
- 42075 Konya
- Turkey
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39
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Ma X, Zhao Y. Biomedical Applications of Supramolecular Systems Based on Host–Guest Interactions. Chem Rev 2014; 115:7794-839. [DOI: 10.1021/cr500392w] [Citation(s) in RCA: 792] [Impact Index Per Article: 79.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xing Ma
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
- School
of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Yanli Zhao
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
- School
of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
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40
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Sayin S, Ozbek C, Okur S, Yilmaz M. Preparation of the ferrocene-substituted 1,3-distal p-tert-butylcalix[4]arene based QCM sensors array and utilization of its gas-sensing affinities. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.06.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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41
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Sayin S, Yilmaz M. Brønsted acidic magnetic nano-Fe3O4-adorned calix[n]arene sulfonic acids: synthesis and application in the nucleophilic substitution of alcohols. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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42
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Di Stefano S, Cacciapaglia R, Mandolini L. Supramolecular Control of Reactivity and Catalysis - Effective Molarities of Recognition-Mediated Bimolecular Reactions. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402690] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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43
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Galukhin AV, Stoikov II. Guanidine-equipped thiacalix[4]arenes: synthesis, interaction with DNA and aggregation properties. MENDELEEV COMMUNICATIONS 2014. [DOI: 10.1016/j.mencom.2014.03.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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44
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Long BM, Pfeffer FM. The Influence of the Framework: An Anion-Binding Study Using Fused [n]Polynorbornanes. Chem Asian J 2014; 9:1091-8. [DOI: 10.1002/asia.201301677] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 01/07/2014] [Indexed: 01/08/2023]
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45
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Salvio R, Cincotti A. Guanidine based self-assembled monolayers on Au nanoparticles as artificial phosphodiesterases. RSC Adv 2014. [DOI: 10.1039/c4ra03150d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Gold nanoparticles passivated with a catalytic monolayer based on guanidine exhibit high cooperativity and efficiency in the cleavage of phosphodiesters.
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Affiliation(s)
- Riccardo Salvio
- Dipartimento di Chimica and IMC – CNR Sezione Meccanismi di Reazione
- Università La Sapienza
- 00185 Roma, Italy
| | - Antonio Cincotti
- Dipartimento di Chimica and IMC – CNR Sezione Meccanismi di Reazione
- Università La Sapienza
- 00185 Roma, Italy
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46
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Salvio R, Cacciapaglia R, Mandolini L, Sansone F, Casnati A. Diguanidinocalix[4]arenes as effective and selective catalysts of the cleavage of diribonucleoside monophosphates. RSC Adv 2014. [DOI: 10.1039/c4ra05751a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Upper rim diguanidino-cone-calix[4]arenes catalyze the hydrolytic cleavage of diribonucleoside monophosphates in aqueous DMSO with good substrate selectivity and rate accelerations approaching 105-fold in the most favourable substrate-catalyst combinations.
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Affiliation(s)
- Riccardo Salvio
- Dipartimento di Chimica and IMC – CNR Sezione Meccanismi di Reazione
- Università La Sapienza
- 00185 Roma, Italy
| | - Roberta Cacciapaglia
- Dipartimento di Chimica and IMC – CNR Sezione Meccanismi di Reazione
- Università La Sapienza
- 00185 Roma, Italy
| | - Luigi Mandolini
- Dipartimento di Chimica and IMC – CNR Sezione Meccanismi di Reazione
- Università La Sapienza
- 00185 Roma, Italy
| | - Francesco Sansone
- Dipartimento di Chimica
- Università degli Studi di Parma
- 43124 Parma, Italy
| | - Alessandro Casnati
- Dipartimento di Chimica
- Università degli Studi di Parma
- 43124 Parma, Italy
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47
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Fang M, Wei L, Lin Z, Lu GY. Synthesis and DNA Cleavage Properties of Triazacrown Derivatives. CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300699] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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48
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Cacciapaglia R, Di Stefano S, Mandolini L, Salvio R. Reactivity of carbonyl and phosphoryl groups at calixarenes. Supramol Chem 2013. [DOI: 10.1080/10610278.2013.824578] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Roberta Cacciapaglia
- Dipartimento di Chimica and IMC-CNR Sezione Meccanismi di Reazione, Università La Sapienza, P.le Aldo Moro 5, 00185, Roma, Italy
| | - Stefano Di Stefano
- Dipartimento di Chimica and IMC-CNR Sezione Meccanismi di Reazione, Università La Sapienza, P.le Aldo Moro 5, 00185, Roma, Italy
| | - Luigi Mandolini
- Dipartimento di Chimica and IMC-CNR Sezione Meccanismi di Reazione, Università La Sapienza, P.le Aldo Moro 5, 00185, Roma, Italy
| | - Riccardo Salvio
- Dipartimento di Chimica and IMC-CNR Sezione Meccanismi di Reazione, Università La Sapienza, P.le Aldo Moro 5, 00185, Roma, Italy
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49
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Salvio R, Mandolini L, Savelli C. Guanidine-guanidinium cooperation in bifunctional artificial phosphodiesterases based on diphenylmethane spacers; gem-dialkyl effect on catalytic efficiency. J Org Chem 2013; 78:7259-63. [PMID: 23772969 DOI: 10.1021/jo401085z] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Diphenylmethane derivatives 1-3, decorated with two guanidine units, are effective catalysts of HPNP transesterification. Substitution of the methylene group of the parent diphenylmethane spacer with cyclohexylidene and adamantylidene moieties enhances catalytic efficency, with gem-dialkyl effect accelerations of 4.5 and 9.1, respectively. Activation parameters and DFT calculations of the rotational barriers around the C-Ar bonds indicate that a major contribution to the driving force for enhanced catalysis is entropic in nature.
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Affiliation(s)
- Riccardo Salvio
- Dipartimento di Chimica and IMC-CNR Sezione Meccanismi di Reazione, Università La Sapienza, P.le Aldo Moro 5, 00185 Roma, Italy.
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50
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Jo J, Olasz A, Chen CH, Lee D. Interdigitated Hydrogen Bonds: Electrophile Activation for Covalent Capture and Fluorescence Turn-On Detection of Cyanide. J Am Chem Soc 2013; 135:3620-32. [DOI: 10.1021/ja312313f] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Junyong Jo
- Department
of Chemistry, Indiana University, 800 East
Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - András Olasz
- Department
of Chemistry, Indiana University, 800 East
Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Chun-Hsing Chen
- Department
of Chemistry, Indiana University, 800 East
Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Dongwhan Lee
- Department
of Chemistry, Indiana University, 800 East
Kirkwood Avenue, Bloomington, Indiana 47405, United States
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