1
|
Li C, Chen H, Zhou L, Shi H, He X, Yang X, Wang K, Liu J. Single-stranded DNA designed lipophilic G-quadruplexes as transmembrane channels for switchable potassium transport. Chem Commun (Camb) 2019; 55:12004-12007. [DOI: 10.1039/c9cc04176a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
G-quadruplex single-stranded DNA was modified lipophilically and developed as a biomimetic ion channel for selective and switchable K+ transport.
Collapse
Affiliation(s)
- Chunying Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
- Changsha 410082
| | - Hui Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
- Changsha 410082
| | - Li Zhou
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
- Changsha 410082
| | - Hui Shi
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
- Changsha 410082
| | - Xiaoxiao He
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
- Changsha 410082
| | - Xiaohai Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
- Changsha 410082
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
- Changsha 410082
| | - Jianbo Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
- Changsha 410082
| |
Collapse
|
2
|
Malla JA, Roy A, Talukdar P. Anion Selective Ion Channel Constructed from a Self-Assembly of Bis(cholate)-Substituted Fumaramide. Org Lett 2018; 20:5991-5994. [DOI: 10.1021/acs.orglett.8b02115] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Javid Ahmad Malla
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune, 411008, India
| | - Arundhati Roy
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune, 411008, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune, 411008, India
| |
Collapse
|
3
|
Das RN, Kumar YP, Kumar SA, Schütte OM, Steinem C, Dash J. Self-Assembly of a Guanosine Derivative To Form Nanostructures and Transmembrane Channels. Chemistry 2018; 24:4002-4005. [DOI: 10.1002/chem.201800205] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Rabindra Nath Das
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700032 India
| | - Y. Pavan Kumar
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700032 India
| | - S. Arun Kumar
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700032 India
| | - Ole Mathis Schütte
- Institute for Organic and Biomolecular Chemistry; Georg August University Göttingen; Tammannstr. 2 37077 Göttingen Germany
| | - Claudia Steinem
- Institute for Organic and Biomolecular Chemistry; Georg August University Göttingen; Tammannstr. 2 37077 Göttingen Germany
| | - Jyotirmayee Dash
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700032 India
| |
Collapse
|
4
|
Vitiello G, Musumeci D, Koutsioubas A, Paduano L, Montesarchio D, D'Errico G. Ionophores at work: Exploring the interaction of guanosine-based amphiphiles with phospholipid membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:2392-2401. [DOI: 10.1016/j.bbamem.2017.09.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 08/31/2017] [Accepted: 09/05/2017] [Indexed: 01/21/2023]
|
5
|
Bhattacharyya T, Kumar YP, Dash J. Supramolecular Hydrogel Inspired from DNA Structures Mimics Peroxidase Activity. ACS Biomater Sci Eng 2017; 3:2358-2365. [DOI: 10.1021/acsbiomaterials.7b00563] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tanima Bhattacharyya
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Y. Pavan Kumar
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Jyotirmayee Dash
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| |
Collapse
|
6
|
Kumar YP, Das RN, Schütte OM, Steinem C, Dash J. Bis-triazolyl diguanosine derivatives as synthetic transmembrane ion channels. Nat Protoc 2016; 11:1039-56. [DOI: 10.1038/nprot.2016.045] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
7
|
Abstract
This paper highlights recent developments in the design and construction of functional materials such as supramolecular hydrogels and ion channels using a guanine motif as a self-assembling building block.
Collapse
Affiliation(s)
- Jyotirmayee Dash
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India.
| | | |
Collapse
|
8
|
Rodríguez-Vázquez N, Fuertes A, Amorín M, Granja JR. Bioinspired Artificial Sodium and Potassium Ion Channels. Met Ions Life Sci 2016; 16:485-556. [DOI: 10.1007/978-3-319-21756-7_14] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
9
|
Blažek Bregović V, Basarić N, Mlinarić-Majerski K. Anion binding with urea and thiourea derivatives. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.03.011] [Citation(s) in RCA: 214] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
10
|
Musumeci D, Irace C, Santamaria R, Milano D, Tecilla P, Montesarchio D. Guanine-based amphiphiles: synthesis, ion transport properties and biological activity. Bioorg Med Chem 2015; 23:1149-56. [DOI: 10.1016/j.bmc.2014.12.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 12/18/2014] [Accepted: 12/22/2014] [Indexed: 12/17/2022]
|
11
|
Bou Zerdan R, Cohn P, Puodziukynaite E, Baker MB, Voisin M, Sarun C, Castellano RK. Synthesis, optical properties, and electronic structures of nucleobase-containing π-conjugated oligomers. J Org Chem 2015; 80:1828-40. [PMID: 25581330 DOI: 10.1021/jo502773g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The molecular recognition properties of the nucleobases instruct the formation of complex three-dimensional architectures in natural and synthetic systems; relatively unexplored is their use as building blocks for π-conjugated materials where they might mutually tune electronic and supramolecular structures. Toward this goal, an introductory set (1a-d and 2a-d) of six purine-terminated and two pyrimidine-terminated π-conjugated oligomers has been synthesized and used to develop experimental electronic and photophysical structure-property trends. Unlike 2,2':5',2″-terthiophene (TTT) derivatives 2a-d, intramolecular charge transfer dominates oligomers 1a-d bearing a 4,7-bisthienylbenzothiadiazole (TBT) spacer due to the strong electron-accepting ability of its benzothiadiazole (BTD) ring. The resulting donor-acceptor-donor systems feature lower HOMO-LUMO gaps than the terthiophene-linked nucleobases (ΔE(g) ∼ 1.8 eV vs 2.4 eV based on electrochemical measurements), and the lowest so far for π-conjugated molecules that include nucleobases within the π-framework. Experiments reveal a dependence of photophysical and electronic structure on the nature of the nucleobase and are in good agreement with theoretical calculations performed at the B3LYP/6-31+G** level. Overall, the results show how nucleobase heterocycles can be installed within π-systems to tune optical and electronic properties. Future work will evaluate the consequences of these information-rich components on supramolecular π-conjugated structure.
Collapse
Affiliation(s)
- Raghida Bou Zerdan
- Department of Chemistry, University of Florida , P.O. Box 117200, Gainesville, Florida 32611, United States
| | | | | | | | | | | | | |
Collapse
|
12
|
Titus S, Sreejalekshmi KG. Propeller-shaped molecules with a thiazole hub: structural landscape and hydrazone cap mediated tunable host behavior in 4-hydrazino-1,3-thiazoles. CrystEngComm 2015. [DOI: 10.1039/c5ce01042j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Propeller-shaped molecules with 2,4,5-trisubstituted-1,3-thiazole as the hub and tunable blades (B1–B3) were synthesized as trivariant scaffolds.
Collapse
Affiliation(s)
- Sarah Titus
- Department of Chemistry
- Indian Institute of Space Science and Technology
- Thiruvananthapuram – 695 547, India
| | - Kumaran G. Sreejalekshmi
- Department of Chemistry
- Indian Institute of Space Science and Technology
- Thiruvananthapuram – 695 547, India
| |
Collapse
|
13
|
Das RN, Kumar YP, Schütte OM, Steinem C, Dash J. A DNA-Inspired Synthetic Ion Channel Based on G–C Base Pairing. J Am Chem Soc 2014; 137:34-7. [PMID: 25514016 DOI: 10.1021/ja510470b] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Rabindra Nath Das
- Department
of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, West Bengal 700032, India
- Department
of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Y. Pavan Kumar
- Department
of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Ole Mathis Schütte
- Institute
of Organic and Biomolecular Chemistry, Georg-August University Göttingen, Tammannstr. 2, Göttingen, Lower Saxony 37077, Germany
| | - Claudia Steinem
- Institute
of Organic and Biomolecular Chemistry, Georg-August University Göttingen, Tammannstr. 2, Göttingen, Lower Saxony 37077, Germany
| | - Jyotirmayee Dash
- Department
of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, West Bengal 700032, India
- Department
of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| |
Collapse
|
14
|
Kumar YP, Das RN, Kumar S, Schütte OM, Steinem C, Dash J. Triazole-tailored guanosine dinucleosides as biomimetic ion channels to modulate transmembrane potential. Chemistry 2014; 20:3023-8. [PMID: 24677317 DOI: 10.1002/chem.201304530] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 01/17/2014] [Indexed: 11/09/2022]
Abstract
A “click” ion channel platform has been established by employing a clickable guanosine azide or alkyne with covalent spacers. The resulting guanosine derivatives modulated the traffic of ions across the phospholipid bilayer, exhibiting a variation in conductance spanning three orders of magnitude (pS to nS). Förster resonance energy transfer studies of the dansyl fluorophore with the membrane binding fluorophore Nile red revealed that the dansyl fluorophore is deeply embedded in the phospholipid bilayer. Complementary cytosine can inhibit the conductance of the supramolecular guanosine channels in the phospholipid bilayers.
Collapse
|
15
|
Chou TH, Chen CW, Liang CH, Yeh LH, Qian S. Simple synthesis, self-assembly, and cytotoxicity of novel dimeric cholesterol derivatives. Colloids Surf B Biointerfaces 2014; 116:153-9. [DOI: 10.1016/j.colsurfb.2013.12.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Revised: 12/07/2013] [Accepted: 12/20/2013] [Indexed: 01/07/2023]
|
16
|
De Riccardis F, Izzo I, Montesarchio D, Tecilla P. Ion transport through lipid bilayers by synthetic ionophores: modulation of activity and selectivity. Acc Chem Res 2013; 46:2781-90. [PMID: 23534613 DOI: 10.1021/ar4000136] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The ion-coupled processes that occur in the plasma membrane regulate the cell machineries in all the living organisms. The details of the chemical events that allow ion transport in biological systems remain elusive. However, investigations of the structure and function of natural and artificial transporters has led to increasing insights about the conductance mechanisms. Since the publication of the first successful artificial system by Tabushi and co-workers in 1982, synthetic chemists have designed and constructed a variety of chemically diverse and effective low molecular weight ionophores. Despite their relative structural simplicity, ionophores must satisfy several requirements. They must partition in the membrane, interact specifically with ions, shield them from the hydrocarbon core of the phospholipid bilayer, and transport ions from one side of the membrane to the other. All these attributes require amphipathic molecules in which the polar donor set used for ion recognition (usually oxygens for cations and hydrogen bond donors for anions) is arranged on a lipophilic organic scaffold. Playing with these two structural motifs, donor atoms and scaffolds, researchers have constructed a variety of different ionophores, and we describe a subset of interesting examples in this Account. Despite the ample structural diversity, structure/activity relationships studies reveal common features. Even when they include different hydrophilic moieties (oxyethylene chains, free hydroxyl, etc.) and scaffolds (steroid derivatives, neutral or polar macrocycles, etc.), amphipathic molecules, that cannot span the entire phospholipid bilayer, generate defects in the contact zone between the ionophore and the lipids and increase the permeability in the bulk membrane. Therefore, topologically complex structures that span the entire membrane are needed to elicit channel-like and ion selective behaviors. In particular the alternate-calix[4]arene macrocycle proved to be a versatile platform to obtain 3D-structures that can form unimolecular channels in membranes. In these systems, the selection of proper donor groups allows us to control the ion selectivity of the process. We can switch from cation to anion transport by substituting protonated amines for the oxygen donors. Large and stable tubular structures with nanometric sized transmembrane nanopores that provide ample internal space represent a different approach for the preparation of synthetic ion channels. We used the metal-mediated self-assembly of porphyrin ligands with Re(I) corners as a new method for producing to robust channel-like structures. Such structures can survive in the complex membrane environment and show interesting ionophoric behavior. In addition to the development of new design principles, the selective modification of the biological membrane permeability could lead to important developments in medicine and technology.
Collapse
Affiliation(s)
- Francesco De Riccardis
- Department of Chemistry and Biology, University of Salerno, via Ponte don Melillo, I-84084 Fisciano (SA), Italy
| | - Irene Izzo
- Department of Chemistry and Biology, University of Salerno, via Ponte don Melillo, I-84084 Fisciano (SA), Italy
| | - Daniela Montesarchio
- Department of Chemical Sciences, University Federico II of Napoli, Via Cintia, 4, I-80126 Napoli, Italy
| | - Paolo Tecilla
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, via Giorgieri 1, I-34127, Trieste, Italy
| |
Collapse
|
17
|
Multitasking Water-Soluble Synthetic G-Quartets: From Preferential RNA-Quadruplex Interaction to Biocatalytic Activity. Chemistry 2013; 19:12739-47. [DOI: 10.1002/chem.201300791] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Indexed: 01/21/2023]
|
18
|
Shibata T, Dohno C, Nakatani K. G-quadruplex formation of entirely hydrophobic DNA in organic solvents. Chem Commun (Camb) 2013; 49:5501-3. [PMID: 23660830 DOI: 10.1039/c3cc42221f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We report herein a novel hydrophobic G-quadruplex DNA consisting of dodecyl phosphotriester linkages. The 6-mer hydrophobic DNA having a TG4T sequence binds to monovalent cations to form a tetramolecular G-quadruplex in low polarity organic solvents.
Collapse
Affiliation(s)
- Tomonori Shibata
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki 567-0047, Japan
| | | | | |
Collapse
|
19
|
Moszynski JM, Fyles TM. Mechanism of Ion Transport by Fluorescent Oligoester Channels. J Am Chem Soc 2012; 134:15937-45. [DOI: 10.1021/ja306596m] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Joanne M. Moszynski
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Thomas M. Fyles
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| |
Collapse
|
20
|
Chui JKW, Fyles TM. Ionic conductance of synthetic channels: analysis, lessons, and recommendations. Chem Soc Rev 2012; 41:148-75. [DOI: 10.1039/c1cs15099e] [Citation(s) in RCA: 141] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
21
|
Webber AL, Masiero S, Pieraccini S, Burley JC, Tatton AS, Iuga D, Pham TN, Spada GP, Brown SP. Identifying guanosine self assembly at natural isotopic abundance by high-resolution 1H and 13C solid-state NMR spectroscopy. J Am Chem Soc 2011; 133:19777-95. [PMID: 22034827 DOI: 10.1021/ja206516u] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
By means of the (1)H chemical shifts and the proton-proton proximities as identified in (1)H double-quantum (DQ) combined rotation and multiple-pulse spectroscopy (CRAMPS) solid-state NMR correlation spectra, ribbon-like and quartet-like self-assembly can be identified for guanosine derivatives without isotopic labeling for which it was not possible to obtain single crystals suitable for diffraction. Specifically, characteristic spectral fingerprints are observed for dG(C10)(2) and dG(C3)(2) derivatives, for which quartet-like and ribbon-like self-assembly has been unambiguously identified by (15)N refocused INADEQUATE spectra in a previous study of (15)N-labeled derivatives (Pham, T. N.; et al. J. Am. Chem. Soc.2005, 127, 16018). The NH (1)H chemical shift is observed to be higher (13-15 ppm) for ribbon-like self-assembly as compared to 10-11 ppm for a quartet-like arrangement, corresponding to a change from NH···N to NH···O intermolecular hydrogen bonding. The order of the two NH(2)(1)H chemical shifts is also inverted, with the NH(2) proton closest in space to the NH proton having a higher or lower (1)H chemical shift than that of the other NH(2) proton for ribbon-like as opposed to quartet-like self-assembly. For the dG(C3)(2) derivative for which a single-crystal diffraction structure is available, the distinct resonances and DQ peaks are assigned by means of gauge-including projector-augmented wave (GIPAW) chemical shift calculations. In addition, (14)N-(1)H correlation spectra obtained at 850 MHz under fast (60 kHz) magic-angle spinning (MAS) confirm the assignment of the NH and NH(2) chemical shifts for the dG(C3)(2) derivative and allow longer range through-space N···H proximities to be identified, notably to the N7 nitrogens on the opposite hydrogen-bonding face.
Collapse
Affiliation(s)
- Amy L Webber
- Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
| | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Simeone L, Milano D, De Napoli L, Irace C, Di Pascale A, Boccalon M, Tecilla P, Montesarchio D. Design, synthesis and characterisation of guanosine-based amphiphiles. Chemistry 2011; 17:13854-65. [PMID: 22052615 DOI: 10.1002/chem.201101827] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Revised: 08/16/2011] [Indexed: 11/05/2022]
Abstract
A small library of sugar-modified guanosine derivatives has been prepared, starting from a common intermediate, fully protected on the nucleobase. Insertion of myristoyl chains and of diverse hydrophilic groups, such as an oligoethylene glycol, an amino acid or a disaccharide chain, connected through in vivo reversible ester linkages, or of a charged functional group provided different examples of amphiphilic guanosine analogues, named G1-G7 herein. All of the sugar-modified derivatives were positive in the potassium picrate test, showing an ability to form G-tetrads. CD spectra demonstrated that, as dilute solutions in CHCl(3), distinctive G-quadruplex systems may be formed, with spatial organisations dependent upon the structural modifications. Two compounds, G1 and G2, proved to be good low-molecular-weight organogelators in polar organic solvents, such as methanol, ethanol and acetonitrile. Ion transportation experiments through phospholipid bilayers were carried out to evaluate their ability to mediate H(+) transportation, with G5 showing the highest activity within the investigated series. Moreover, G3 and G5 exhibited a significant cytotoxic profile against human MCF-7 cancer cells in in vitro bioassays.
Collapse
Affiliation(s)
- Luca Simeone
- Department of Organic Chemistry and Biochemistry, University Federico II of Napoli, Via Cintia, 4, 80126 Napoli, Italy
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Le Duc Y, Michau M, Gilles A, Gence V, Legrand YM, van der Lee A, Tingry S, Barboiu M. Imidazole-Quartet Water and Proton Dipolar Channels. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103312] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
24
|
Le Duc Y, Michau M, Gilles A, Gence V, Legrand YM, van der Lee A, Tingry S, Barboiu M. Imidazole-Quartet Water and Proton Dipolar Channels. Angew Chem Int Ed Engl 2011; 50:11366-72. [DOI: 10.1002/anie.201103312] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2011] [Indexed: 01/11/2023]
|
25
|
Michinobu T, Hiraki K, Fujii N, Shikinaka K, Katayama Y, Masai E, Nakamura M, Otsuka Y, Ohara S, Shigehara K. Liquid Crystallinity and Organogelation Behavior of Lignin-Derived Metabolic Intermediate Bearing Cholesterol Groups. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2011. [DOI: 10.1246/bcsj.20110055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
26
|
Matile S, Vargas Jentzsch A, Montenegro J, Fin A. Recent synthetic transport systems. Chem Soc Rev 2011; 40:2453-74. [PMID: 21390363 DOI: 10.1039/c0cs00209g] [Citation(s) in RCA: 292] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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).
Collapse
Affiliation(s)
- Stefan Matile
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland.
| | | | | | | |
Collapse
|
27
|
Otis F, Racine-Berthiaume C, Voyer N. How Far Can a Sodium Ion Travel within a Lipid Bilayer? J Am Chem Soc 2011; 133:6481-3. [DOI: 10.1021/ja110336s] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- François Otis
- Département de Chimie and PROTEO, Faculté des Sciences et de Génie, Université Laval, Pavillon Alexandre-Vachon, 1045 avenue de la Médecine, Québec, QC, Canada, G1V 0A6
| | - Charles Racine-Berthiaume
- Département de Chimie and PROTEO, Faculté des Sciences et de Génie, Université Laval, Pavillon Alexandre-Vachon, 1045 avenue de la Médecine, Québec, QC, Canada, G1V 0A6
| | - Normand Voyer
- Département de Chimie and PROTEO, Faculté des Sciences et de Génie, Université Laval, Pavillon Alexandre-Vachon, 1045 avenue de la Médecine, Québec, QC, Canada, G1V 0A6
| |
Collapse
|
28
|
Park J, Lang K, Abboud KA, Hong S. Self-assembly approach toward chiral bimetallic catalysts: bis-urea-functionalized (salen)cobalt complexes for the hydrolytic kinetic resolution of epoxides. Chemistry 2011; 17:2236-45. [PMID: 21294187 DOI: 10.1002/chem.201002600] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Indexed: 11/11/2022]
Abstract
A series of novel bis-urea-functionalized (salen)Co complexes has been developed. The complexes were designed to form self-assembled structures in solution through intermolecular urea-urea hydrogen-bonding interactions. These bis-urea (salen)Co catalysts resulted in rate acceleration (up to 13 times) in the hydrolytic kinetic resolution (HKR) of rac-epichlorohydrin in THF by facilitating cooperative activation, compared to the monomeric catalyst. In addition, one of the bis-urea (salen)Co(III) catalyst efficiently resolves various terminal epoxides even under solvent-free conditions by requiring much shorter reaction time at low catalyst loading (0.03-0.05 mol %). A series of kinetic/mechanistic studies demonstrated that the self-association of two (salen)Co units through urea-urea hydrogen bonds was responsible for the observed rate acceleration. The self-assembly study with the bis-urea (salen)Co by FTIR spectroscopy and with the corresponding (salen)Ni complex by (1)H NMR spectroscopy showed that intermolecular hydrogen-bonding interactions exist between the bis-urea scaffolds in THF. This result demonstrates that self-assembly approach by using non-covalent interactions can be an alternative and useful strategy toward the efficient HKR catalysis.
Collapse
Affiliation(s)
- Jongwoo Park
- Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA
| | | | | | | |
Collapse
|
29
|
Moszynski JM, Fyles TM. Synthesis and ion transport activity of oligoesters containing an environment-sensitive fluorophore. Org Biomol Chem 2011; 9:7468-75. [DOI: 10.1039/c1ob06047c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
30
|
Lim J, Miljanić OŠ. Crystal structures of 8-arylethynyl substituted guanosine derivatives: are hydrogen-bonded ribbons a surprise? CrystEngComm 2011. [DOI: 10.1039/c1ce05618b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
31
|
Moszynski JM, Fyles TM. Synthesis, transport activity, membrane localization, and dynamics of oligoester ion channels containing diphenylacetylene units. Org Biomol Chem 2010; 8:5139-49. [DOI: 10.1039/c0ob00194e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
32
|
|