101
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O’Connor D, Byrne A, Dolan C, Keyes TE. Phase partitioning, solvent-switchable BODIPY probes for high contrast cellular imaging and FCS. NEW J CHEM 2018. [DOI: 10.1039/c7nj04604a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lipophilic BODIPY fluorphores, in which the BODIPY core bears pendant dipyrido[3,2-a:2′,3′-c]phenazine (Dppz) or naphthyridyl and cholesterol substituents were designed and prepared as lipid probes for both liposomes and live cell imaging.
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Affiliation(s)
- Darragh O’Connor
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University
- Dublin 9
- Ireland
| | - Aisling Byrne
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University
- Dublin 9
- Ireland
| | - Ciarán Dolan
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University
- Dublin 9
- Ireland
| | - Tia E. Keyes
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University
- Dublin 9
- Ireland
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102
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Gopinath A, Ramamurthy K, Subaraja M, Selvaraju C, Nasar AS. A3-Type star stilbene and cyanostilbene molecules: synthesis, fluorescence properties and bio-imaging application. NEW J CHEM 2018. [DOI: 10.1039/c8nj00676h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this article, we report star-like stilbene and cyanostilbene molecules exhibiting strong fluorescence, ICT and AIE properties. Star cyanostilbene was found to be an excellent fluorophore for bio-imaging application.
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Affiliation(s)
- A. Gopinath
- Department of Polymer Science
- University of Madras
- Chennai-25
- India
| | - K. Ramamurthy
- National Centre for Ultrafast Processes
- University of Madras
- Chennai-600 113
- India
| | | | | | - A. Sultan Nasar
- Department of Polymer Science
- University of Madras
- Chennai-25
- India
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103
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Derivatives of 2,5-Diaryl-1,3-Oxazole and 2,5-Diaryl-1,3,4-Oxadiazole as Environment-Sensitive Fluorescent Probes for Studies of Biological Membranes. REVIEWS IN FLUORESCENCE 2017 2018. [DOI: 10.1007/978-3-030-01569-5_9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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104
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Shaya J, Collot M, Bénailly F, Mahmoud N, Mély Y, Michel BY, Klymchenko AS, Burger A. Turn-on Fluorene Push-Pull Probes with High Brightness and Photostability for Visualizing Lipid Order in Biomembranes. ACS Chem Biol 2017; 12:3022-3030. [PMID: 29053920 DOI: 10.1021/acschembio.7b00658] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The rational design of environmentally sensitive dyes with superior properties is critical for elucidating the fundamental biological processes and understanding the biophysical behavior of cell membranes. In this study, a novel group of fluorene-based push-pull probes was developed for imaging membrane lipids. The design of these fluorogenic conjugates is based on a propioloyl linker to preserve the required spectroscopic features of the core dye. This versatile linker allowed the introduction of a polar deoxyribosyl head, a lipophilic chain, and an amphiphilic/anchoring group to tune the cell membrane binding and internalization. It was found that the deoxyribosyl head favored cell internalization and staining of intracellular membranes, whereas an amphiphilic anchor group ensured specific plasma membrane staining. The optimized fluorene probes presented a set of improvements as compared to commonly used environmentally sensitive membrane probe Laurdan such as red-shifted absorption matching the 405 nm diode laser excitation, a blue-green emission range complementary to the red fluorescent proteins, enhanced brightness and photostability, as well as preserved sensitivity to lipid order, as shown in model membranes and living cells.
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Affiliation(s)
- Janah Shaya
- Université Côte d’Azur, CNRS, Institut de Chimie de Nice, UMR 7272 − Parc Valrose, 06108 Nice cedex 2, France
| | - Mayeul Collot
- Laboratoire
de Biophotonique et Pharmacologie, UMR 7213, Faculté de Pharmacie, Université de Strasbourg, CNRS, 74 Route du Rhin, 67401 Illkirch, France
| | - Frédéric Bénailly
- Université Côte d’Azur, CNRS, Institut de Chimie de Nice, UMR 7272 − Parc Valrose, 06108 Nice cedex 2, France
| | - Najiba Mahmoud
- Université Côte d’Azur, CNRS, Institut de Chimie de Nice, UMR 7272 − Parc Valrose, 06108 Nice cedex 2, France
| | - Yves Mély
- Laboratoire
de Biophotonique et Pharmacologie, UMR 7213, Faculté de Pharmacie, Université de Strasbourg, CNRS, 74 Route du Rhin, 67401 Illkirch, France
| | - Benoît Y. Michel
- Université Côte d’Azur, CNRS, Institut de Chimie de Nice, UMR 7272 − Parc Valrose, 06108 Nice cedex 2, France
| | - Andrey S. Klymchenko
- Laboratoire
de Biophotonique et Pharmacologie, UMR 7213, Faculté de Pharmacie, Université de Strasbourg, CNRS, 74 Route du Rhin, 67401 Illkirch, France
| | - Alain Burger
- Université Côte d’Azur, CNRS, Institut de Chimie de Nice, UMR 7272 − Parc Valrose, 06108 Nice cedex 2, France
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105
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Ermakova EV, Arslanov VV. Analytical micelles containing amphiphilic aminoanthraquinone solvatochromic reporter receptor. COLLOID JOURNAL 2017. [DOI: 10.1134/s1061933x17060060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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106
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Sena F, Sotelo-Silveira M, Astrada S, Botella MA, Malacrida L, Borsani O. Spectral phasor analysis reveals altered membrane order and function of root hair cells in Arabidopsis dry2/sqe1-5 drought hypersensitive mutant. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 119:224-231. [PMID: 28910707 DOI: 10.1016/j.plaphy.2017.08.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/21/2017] [Accepted: 08/21/2017] [Indexed: 06/07/2023]
Abstract
Biological membranes allow the regulation of numerous cellular processes, which are affected when unfavorable environmental factors are perceived. Lipids and proteins are the principal components of biological membranes. Each lipid has unique biophysical properties, and, therefore the lipid composition of the membrane is critical to maintaining the bilayer structure and functionality. Membrane composition and integrity are becoming the focus of studies aiming to understand how plants adapt to its environment. In this study, using a combination of di-4-ANEPPDHQ fluorescence and spectral phasor analysis, we report that the drought hypersensitive/squalene epoxidase (dry2/sqe1-5) mutant with reduced major sterols such as sitosterol and stigmasterol in roots presented higher membrane fluidity than the wild type. Moreover, analysis of endomembrane dynamics showed that vesicle formation was affected in dry2/sqe1-5. Further analysis of proteins associated with sterol rich micro domains showed that dry2/sqe1-5 presented micro domains function altered.
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Affiliation(s)
- Florencia Sena
- Departamento de Biología Vegetal, Laboratorio de Bioquímica, Facultad de Agronomía, Montevideo, Uruguay
| | - Mariana Sotelo-Silveira
- Departamento de Biología Vegetal, Laboratorio de Bioquímica, Facultad de Agronomía, Montevideo, Uruguay.
| | | | - Miguel A Botella
- Instituto de Hortofruticultura Subtropical y Mediterránea, Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, 29071 Malaga, Spain
| | - Leonel Malacrida
- Departamento de Fisiopatología, Hospital de Clínicas, Universidad de la Republica, Montevideo-Uruguay, Analytical Biochemistry and Proteomics Unit, Institut Pasteur of Montevideo, Uruguay
| | - Omar Borsani
- Departamento de Biología Vegetal, Laboratorio de Bioquímica, Facultad de Agronomía, Montevideo, Uruguay
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107
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Wang F, DeRosa CA, Daly ML, Song D, Fraser CL. Multi-stimuli responsive luminescent azepane-substituted β-diketones and difluoroboron complexes. MATERIALS CHEMISTRY FRONTIERS 2017; 1:1866-1874. [PMID: 29774165 PMCID: PMC5951180 DOI: 10.1039/c7qm00137a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Difluoroboron β-diketonate (BF2bdk) compounds show environment-sensitive optical properties in solution, aggregation-induced emission (AIE) and multi-stimuli responsive fluorescence switching in the solid state. Here, a series of 4-azepane-substituted β-diketone (bdk) ligands (L-H, L-OMe, L-Br) and their corresponding difluoroboron dyes (D-H, D-OMe, D-Br) were synthesized, and various responsive fluorescence properties of the compounds were studied, including solvatochromism, viscochromism, AIE, mechanochromic luminescence (ML) and halochromism. Compared to the β-diketones, the boron complexes exhibited higher extinction coefficients but lower quantum yields, and red-shifted absorption and emission in CH2Cl2. Computational studies showed that intramolecular charge transfer (ICT) dominated rather than π-π* transitions in all the compounds regardless of boron coordination. In solution, all the bdk ligands and boron dyes showed red-shifted emission in more polar solvents and increased fluorescence intensity in more viscous media. Upon aggregation, the emission of the β-diketones was quenched, however, the boronated dyes showed increased emission, indicative of AIE. Solid-state emission properties, ML and halochromism, were investigated on spin cast films. For ML, smearing caused a bathochromic emission shift for L-Br, and powder X-ray diffraction (XRD) patterns showed that the "as spun" and thermally annealed states were more crystalline and the smeared state was amorphous. No obvious ML emission shift was observed for L-H or L-OMe, and the boronated dyes were not mechano-active. Trifluoroacetic acid (TFA) and triethylamine (TEA) vapors were used to study halochromism. Large hypsochromic emission shifts were observed for all the compounds after TFA vapor was applied, and reversible fluorescence switching was achieved using the acid/base pair.
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Affiliation(s)
- Fang Wang
- Department of Chemistry, University of Virginia, Charlottesville,
Virginia 22904
| | | | - Margaret L. Daly
- Department of Chemistry, University of Virginia, Charlottesville,
Virginia 22904
| | - Daniel Song
- Department of Chemistry, University of Virginia, Charlottesville,
Virginia 22904
| | - Cassandra L. Fraser
- Department of Chemistry, University of Virginia, Charlottesville,
Virginia 22904
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108
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Beltrán A, Burguete MI, Luis SV, Galindo F. Styrylpyrylium Dyes as Solvent-Sensitive Molecules Displaying Dual Fluorescence. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700815] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alicia Beltrán
- Departamento de Química Inorgánica y Orgánica; Universitat Jaume I; Avda. Sos Baynat s/n 12071 Castellón Spain
| | - M. Isabel Burguete
- Departamento de Química Inorgánica y Orgánica; Universitat Jaume I; Avda. Sos Baynat s/n 12071 Castellón Spain
| | - Santiago V. Luis
- Departamento de Química Inorgánica y Orgánica; Universitat Jaume I; Avda. Sos Baynat s/n 12071 Castellón Spain
| | - Francisco Galindo
- Departamento de Química Inorgánica y Orgánica; Universitat Jaume I; Avda. Sos Baynat s/n 12071 Castellón Spain
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109
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Chatterjee T, Chatterjee BK, Chakrabarti P. Modelling of growth kinetics of Vibrio cholerae in presence of gold nanoparticles: effect of size and morphology. Sci Rep 2017; 7:9671. [PMID: 28851910 PMCID: PMC5575114 DOI: 10.1038/s41598-017-09357-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 07/25/2017] [Indexed: 01/05/2023] Open
Abstract
Emergence of multiple drug resistant strains of pathogenic bacteria calls for new initiatives to combat infectious diseases. Gold nanoparticles (AuNPs), because of their non-toxic nature and size/shape dependent optical properties, offer interesting possibility. Here we report the antibacterial efficacy of AuNPs of different size and shape (AuNS10, AuNS100 and AuNR10; the number indicating the diameter in nm; S stands for sphere and R for rod) against the classical (O395) and El Tor (N16961) biotypes of Vibrio cholerae, the etiological agent responsible for cholera. Growth kinetics was monitored by measuring optical density at different time intervals and fitted by non-linear regression of modified Buchanan model. Sigmoidal growth curve for VcO395 indicated the existence of single phenotype population and was affected by AuNR10 only, implying the importance of morphology of AuNP. Growth of VcN16961 was affected by all three AuNPs indicating the vulnerability of El Tor biotype. Interestingly, VcN16961 exhibited the occurrence of two phenotypic subpopulations - one with shorter (vulnerable Type 1) and the other with extended (tolerant Type 2) lag phase. Various assays were conducted to probe the impact of AuNPs on bacterial cells. Apart from AuNR10, antimicrobial efficacy of AuNS10 was better compared to AuNS100.
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Affiliation(s)
- Tanaya Chatterjee
- Department of Biochemistry, Bose Institute, P1/12 CIT Scheme VIIM, Kolkata, 700054, India.
| | - Barun K Chatterjee
- Department of Physics, Bose Institute, 93/1A.P.C. Road, Kolkata, 700009, India
| | - Pinak Chakrabarti
- Department of Biochemistry, Bose Institute, P1/12 CIT Scheme VIIM, Kolkata, 700054, India
- Bioinformatics Centre, Bose Institute, P1/12 CIT Scheme VIIM, Kolkata, 700054, India
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110
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Moon S, Yan R, Kenny SJ, Shyu Y, Xiang L, Li W, Xu K. Spectrally Resolved, Functional Super-Resolution Microscopy Reveals Nanoscale Compositional Heterogeneity in Live-Cell Membranes. J Am Chem Soc 2017; 139:10944-10947. [DOI: 10.1021/jacs.7b03846] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Seonah Moon
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Rui Yan
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Samuel J. Kenny
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Yennie Shyu
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Limin Xiang
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Wan Li
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Ke Xu
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- Division
of Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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111
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Azcárate JC, Díaz SA, Fauerbach JA, Gillanders F, Rubert AA, Jares-Erijman EA, Jovin TM, Fonticelli MH. ESIPT and FRET probes for monitoring nanoparticle polymer coating stability. NANOSCALE 2017; 9:8647-8656. [PMID: 28612865 DOI: 10.1039/c7nr01787a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Coating strategies of inorganic nanoparticles (NPs) can provide properties unavailable to the NP core alone, such as targeting, specific sensing, and increased biocompatibility. Non-covalent amphiphilic NP capping polymers function via hydrophobic interactions with surface ligands and are extensively used to transfer NPs to aqueous media. For applications of coated NPs as actuators (sensors, markers, or for drug delivery) in a complex environment, such as biological systems, it is important to achieve a deep understanding of the factors affecting coating stability and behavior. We have designed a system that tests the coating stability of amphiphilic polymers through a simple fluorescent readout using either polarity sensing ESIPT (excited state intramolecular proton transfer) dyes or NP FRET (Förster resonance energy transfer). The stability of the coating was determined in response to changes in polarity, pH and ionic strength in the medium. Using the ESIPT system we observed linear changes in signal up to ∼20-25% v/v of co-solvent addition, constituting a break point. Based on such data, we propose a model for coating instability and the important adjustable parameters, such as the electrical charge distribution. FRET data provided confirmatory evidence for the model. The ESIPT dyes and FRET based methods represent new, simple tools for testing NP coating stability in complex environments.
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Affiliation(s)
- Julio C Azcárate
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata - CONICET Sucursal 4, Casilla de Correo 16, 1900 La Plata, Argentina.
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112
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Raja SO, Sivaraman G, Mukherjee A, Duraisamy C, Gulyani A. Facile Synthesis of Highly Sensitive, Red-Emitting, Fluorogenic Dye for Microviscosity and Mitochondrial Imaging in Embryonic Stem Cells. ChemistrySelect 2017. [DOI: 10.1002/slct.201700463] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Sufi O. Raja
- Institute for Stem Cell Biology & Regenerative Medicine; Bengaluru 560065 India
| | - Gandhi Sivaraman
- Institute for Stem Cell Biology & Regenerative Medicine; Bengaluru 560065 India
| | - Ananya Mukherjee
- Institute for Stem Cell Biology & Regenerative Medicine; Bengaluru 560065 India
- SASTRA University; Thanjavur- 613401 India
| | | | - Akash Gulyani
- Institute for Stem Cell Biology & Regenerative Medicine; Bengaluru 560065 India
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113
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Kovács T, Batta G, Zákány F, Szöllősi J, Nagy P. The dipole potential correlates with lipid raft markers in the plasma membrane of living cells. J Lipid Res 2017; 58:1681-1691. [PMID: 28607008 DOI: 10.1194/jlr.m077339] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 06/06/2017] [Indexed: 11/20/2022] Open
Abstract
The dipole potential generating an electric field much stronger than any other type of membrane potential influences a wide array of phenomena, ranging from passive permeation to voltage-dependent conformational changes of membrane proteins. It is generated by the ordered orientation of lipid carbonyl and membrane-attached water dipole moments. Theoretical considerations and indirect experimental evidence obtained in model membranes suggest that the dipole potential is larger in liquid-ordered domains believed to correspond to lipid rafts in cell membranes. Using three different dipole potential-sensitive fluorophores and four different labeling approaches of raft and nonraft domains, we showed that the dipole potential is indeed stronger in lipid rafts than in the rest of the membrane. The magnitude of this difference is similar to that observed between the dipole potential in control and sphingolipid-enriched cells characteristic of Gaucher's disease. The results established that the heterogeneity of the dipole potential in living cell membranes is correlated with lipid rafts and imply that alterations in the lipid composition of the cell membrane in human diseases can lead to substantial changes in the dipole potential.
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Affiliation(s)
- Tamás Kovács
- Department of Biophysics and Cell Biology Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - Gyula Batta
- Faculty of Medicine, and Department of Genetics and Applied Microbiology, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - Florina Zákány
- Department of Biophysics and Cell Biology Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - János Szöllősi
- Department of Biophysics and Cell Biology Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary; MTA-DE Cell Biology and Signaling Research Group, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - Peter Nagy
- Department of Biophysics and Cell Biology Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary.
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114
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Yoshikai N, Santra M, Wu B. Synthesis of Donor–Acceptor-Type Benzo[b]phosphole and Naphtho[2,3-b]phosphole Oxides and Their Solvatochromic Properties. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00244] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Naohiko Yoshikai
- Division of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Mithun Santra
- Division of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Bin Wu
- Division of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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115
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Garcia A, Pratap PR, Lüpfert C, Cornelius F, Jacquemin D, Lev B, Allen TW, Clarke RJ. The voltage-sensitive dye RH421 detects a Na + ,K + -ATPase conformational change at the membrane surface. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:813-823. [DOI: 10.1016/j.bbamem.2017.01.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 01/09/2017] [Accepted: 01/19/2017] [Indexed: 10/20/2022]
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116
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Denz M, Chiantia S, Herrmann A, Mueller P, Korte T, Schwarzer R. Cell cycle dependent changes in the plasma membrane organization of mammalian cells. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:350-359. [DOI: 10.1016/j.bbamem.2016.12.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 11/24/2016] [Accepted: 12/14/2016] [Indexed: 11/16/2022]
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117
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Klymchenko AS. Solvatochromic and Fluorogenic Dyes as Environment-Sensitive Probes: Design and Biological Applications. Acc Chem Res 2017; 50:366-375. [PMID: 28067047 DOI: 10.1021/acs.accounts.6b00517] [Citation(s) in RCA: 646] [Impact Index Per Article: 92.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Fluorescent environment-sensitive probes are specially designed dyes that change their fluorescence intensity (fluorogenic dyes) or color (e.g., solvatochromic dyes) in response to change in their microenvironment polarity, viscosity, and molecular order. The studies of the past decade, including those of our group, have shown that these molecules become universal tools in fluorescence sensing and imaging. In fact, any biomolecular interaction or change in biomolecular organization results in modification of the local microenvironment, which can be directly monitored by these types of probes. In this Account, the main examples of environment-sensitive probes are summarized according to their design concepts. Solvatochromic dyes constitute a large class of environment-sensitive probes which change their color in response to polarity. Generally, they are push-pull dyes undergoing intramolecular charge transfer. Emission of their highly polarized excited state shifts to the red in more polar solvents. Excited-state intramolecular proton transfer is the second key concept to design efficient solvatochromic dyes, which respond to the microenvironment by changing relative intensity of the two emissive tautomeric forms. Due to their sensitivity to polarity and hydration, solvatochromic dyes have been successfully applied to biological membranes for studying lipid domains (rafts), apoptosis and endocytosis. As fluorescent labels, solvatochromic dyes can detect practically any type of biomolecular interactions, involving proteins, nucleic acids and biomembranes, because the binding event excludes local water molecules from the interaction site. On the other hand, fluorogenic probes usually exploit intramolecular rotation (conformation change) as a design concept, with molecular rotors being main representatives. These probes were particularly efficient for imaging viscosity and lipid order in biomembranes as well as to light up biomolecular targets, such as antibodies, aptamers and receptors. The emerging concepts to achieve fluorogenic response to the microenvironment include ground-state isomerization, aggregation-caused quenching, and aggregation-induced emission. The ground-state isomerization exploits, for instance, polarity-dependent spiro-lactone formation in silica-rhodamines. The aggregation-caused quenching uses disruption of the self-quenched dimers and nanoassemblies of dyes in less polar environments of lipid membranes and biomolecules. The aggregation-induced emission couples target recognition with formation of highly fluorescent dye aggregates. Overall, solvatochromic and fluorogenic probes enable background-free bioimaging in wash-free conditions as well as quantitative analysis when combined with advanced microscopy, such as fluorescence lifetime (FLIM) and ratiometric imaging. Further development of fluorescent environment-sensitive probes should address some remaining problems: (i) improving their optical properties, especially brightness, photostability, and far-red to near-infrared operating range; (ii) minimizing nonspecific interactions of the probes in biological systems; (iii) their adaptation for advanced microscopies, notably for superresolution and in vivo imaging.
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Affiliation(s)
- Andrey S. Klymchenko
- Laboratoire de Biophotonique et Pharmacologie,
UMR 7213 CNRS, Université de Strasbourg, F-67000 Strasbourg, France
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118
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Gaibelet G, Tercé F, Allart S, Lebrun C, Collet X, Jamin N, Orlowski S. Fluorescent probes for detecting cholesterol-rich ordered membrane microdomains: entangled relationships between structural analogies in the membrane and functional homologies in the cell. AIMS BIOPHYSICS 2017. [DOI: 10.3934/biophy.2017.1.121] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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119
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Yamaguchi S, Fukazawa A, Taki M. Phosphole P-Oxide-Containing π-Electron Materials: Synthesis and Applications in Fluorescence Imaging. J SYN ORG CHEM JPN 2017. [DOI: 10.5059/yukigoseikyokaishi.75.1179] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shigehiro Yamaguchi
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University
- Department of Chemistry, Graduate School of Science, and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University
| | - Aiko Fukazawa
- Department of Chemistry, Graduate School of Science, and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University
| | - Masayasu Taki
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University
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120
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Giardinetti M, Marrot J, Coeffard V, Moreau X, Greck C. Synthesis and fluorosolvatochromic properties of 1,7-annulated indoles. NEW J CHEM 2017. [DOI: 10.1039/c7nj00365j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New push–pull indole-based fluorescent dyes have been prepared and these compounds exhibit fluorosolvatochromic properties.
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Affiliation(s)
- Maxime Giardinetti
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles-St-Quentin-en-Yvelines
- 78035 Versailles Cedex
- France
| | - Jérôme Marrot
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles-St-Quentin-en-Yvelines
- 78035 Versailles Cedex
- France
| | - Vincent Coeffard
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles-St-Quentin-en-Yvelines
- 78035 Versailles Cedex
- France
| | - Xavier Moreau
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles-St-Quentin-en-Yvelines
- 78035 Versailles Cedex
- France
| | - Christine Greck
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles-St-Quentin-en-Yvelines
- 78035 Versailles Cedex
- France
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121
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Gers-Panther CF, Fischer H, Nordmann J, Seiler T, Behnke T, Würth C, Frank W, Resch-Genger U, Müller TJJ. Four- and Five-Component Syntheses and Photophysical Properties of Emission Solvatochromic 3-Aminovinylquinoxalines. J Org Chem 2016; 82:567-578. [DOI: 10.1021/acs.joc.6b02581] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Charlotte F. Gers-Panther
- Institut
für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Henry Fischer
- Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Strasse
11, D-12489 Berlin, Germany
| | - Jan Nordmann
- Institut
für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Theresa Seiler
- Institut
für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Thomas Behnke
- Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Strasse
11, D-12489 Berlin, Germany
| | - Christian Würth
- Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Strasse
11, D-12489 Berlin, Germany
| | - Walter Frank
- Institut
für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Ute Resch-Genger
- Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Strasse
11, D-12489 Berlin, Germany
| | - Thomas J. J. Müller
- Institut
für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
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122
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Thomaier M, Gremer L, Dammers C, Fabig J, Neudecker P, Willbold D. High-Affinity Binding of Monomeric but Not Oligomeric Amyloid-β to Ganglioside GM1 Containing Nanodiscs. Biochemistry 2016; 55:6662-6672. [DOI: 10.1021/acs.biochem.6b00829] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Maren Thomaier
- Institute
of Complex Systems (ICS-6), Structural Biochemistry, Forschungszentrum Jülich, 52425, Jülich, Germany
- Institut
für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, 40225, Düsseldorf, Germany
| | - Lothar Gremer
- Institute
of Complex Systems (ICS-6), Structural Biochemistry, Forschungszentrum Jülich, 52425, Jülich, Germany
- Institut
für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, 40225, Düsseldorf, Germany
| | - Christina Dammers
- Institute
of Complex Systems (ICS-6), Structural Biochemistry, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - Judith Fabig
- Institute
of Complex Systems (ICS-6), Structural Biochemistry, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - Philipp Neudecker
- Institute
of Complex Systems (ICS-6), Structural Biochemistry, Forschungszentrum Jülich, 52425, Jülich, Germany
- Institut
für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, 40225, Düsseldorf, Germany
| | - Dieter Willbold
- Institute
of Complex Systems (ICS-6), Structural Biochemistry, Forschungszentrum Jülich, 52425, Jülich, Germany
- Institut
für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, 40225, Düsseldorf, Germany
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123
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Islam MM, Mitra S. Cholinergic inhibitors replace thioflavin-T from acetylcholinesterase binding pocket: A potential fluorescence based molecular switch. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.09.079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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124
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Jay AG, Hamilton JA. Disorder Amidst Membrane Order: Standardizing Laurdan Generalized Polarization and Membrane Fluidity Terms. J Fluoresc 2016; 27:243-249. [DOI: 10.1007/s10895-016-1951-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 10/03/2016] [Indexed: 12/01/2022]
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125
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Li Y, Qian Z, Ma L, Hu S, Nong D, Xu C, Ye F, Lu Y, Wei G, Li M. Single-molecule visualization of dynamic transitions of pore-forming peptides among multiple transmembrane positions. Nat Commun 2016; 7:12906. [PMID: 27686409 PMCID: PMC5056435 DOI: 10.1038/ncomms12906] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 08/16/2016] [Indexed: 01/05/2023] Open
Abstract
Research on the dynamics of single-membrane proteins remains underdeveloped due to the lack of proper approaches that can probe in real time the protein's insertion depth in lipid bilayers. Here we report a single-molecule visualization method to track both vertical insertion and lateral diffusion of membrane proteins in supported lipid bilayers by exploiting the surface-induced fluorescence attenuation (SIFA) of fluorophores. The attenuation follows a d−4 dependency, where d is the fluorophore-to-surface distance. The method is validated by observing the antimicrobial peptide LL-37 to transfer among five transmembrane positions: the surface, the upper leaflet, the centre, the lower leaflet and the bottom of the lipid bilayer. These results demonstrate the power of SIFA to study protein-membrane interactions and provide unprecedented in-depth understanding of molecular mechanisms of the insertion and translocation of membrane proteins. Assessing protein localization within lipid membranes is problematic. Here, the authors describe a single molecule visualization method based on surface-induced fluorescence attenuation (SIFA) to determine the insertion depth and lateral diffusion of a peptide in a lipid bilayer.
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Affiliation(s)
- Ying Li
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhenyu Qian
- State Key Laboratory of Surface Physics, Key Laboratory for Computational Physical Sciences (Ministry of Education), and Department of Physics, Fudan University, Shanghai 200433, China
| | - Li Ma
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Shuxin Hu
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Daguan Nong
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Chunhua Xu
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Fangfu Ye
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Ying Lu
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Guanghong Wei
- State Key Laboratory of Surface Physics, Key Laboratory for Computational Physical Sciences (Ministry of Education), and Department of Physics, Fudan University, Shanghai 200433, China
| | - Ming Li
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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126
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Vyšniauskas A, Qurashi M, Kuimova MK. A Molecular Rotor that Measures Dynamic Changes of Lipid Bilayer Viscosity Caused by Oxidative Stress. Chemistry 2016; 22:13210-7. [PMID: 27487026 PMCID: PMC5096028 DOI: 10.1002/chem.201601925] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Indexed: 11/23/2022]
Abstract
Oxidation of cellular structures is typically an undesirable process that can be a hallmark of certain diseases. On the other hand, photooxidation is a necessary step of photodynamic therapy (PDT), a cancer treatment causing cell death upon light irradiation. Here, the effect of photooxidation on the microscopic viscosity of model lipid bilayers constructed of 1,2-dioleoyl-sn-glycero-3-phosphocholine has been studied. A molecular rotor has been employed that displays a viscosity-dependent fluorescence lifetime as a quantitative probe of the bilayer's viscosity. Thus, spatially-resolved viscosity maps of lipid photooxidation in giant unilamellar vesicles (GUVs) were obtained, testing the effect of the positioning of the oxidant relative to the rotor in the bilayer. It was found that PDT has a strong impact on viscoelastic properties of lipid bilayers, which 'travels' through the bilayer to areas that have not been irradiated directly. A dramatic difference in viscoelastic properties of oxidized GUVs by Type I (electron transfer) and Type II (singlet oxygen-based) photosensitisers was also detected.
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Affiliation(s)
- Aurimas Vyšniauskas
- Chemistry Department, Imperial College London, Exhibition Road, London, SW7 2AZ, UK
| | - Maryam Qurashi
- Chemistry Department, Imperial College London, Exhibition Road, London, SW7 2AZ, UK
| | - Marina K Kuimova
- Chemistry Department, Imperial College London, Exhibition Road, London, SW7 2AZ, UK.
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127
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Dziuba D, Pospíšil P, Matyašovský J, Brynda J, Nachtigallová D, Rulíšek L, Pohl R, Hof M, Hocek M. Solvatochromic fluorene-linked nucleoside and DNA as color-changing fluorescent probes for sensing interactions. Chem Sci 2016; 7:5775-5785. [PMID: 30034716 PMCID: PMC6021979 DOI: 10.1039/c6sc02548j] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 06/20/2016] [Indexed: 12/16/2022] Open
Abstract
A nucleoside bearing a solvatochromic push-pull fluorene fluorophore (dCFL ) was designed and synthesized by the Sonogashira coupling of alkyne-linked fluorene 8 with 5-iodo-2'-deoxycytidine. The fluorene building block 8 and labeled nucleoside dCFL exerted bright fluorescence with significant solvatochromic effect providing emission maxima ranging from 421 to 544 nm and high quantum yields even in highly polar solvents, including water. The solvatochromism of 8 was studied by DFT and ADC(2) calculations to show that, depending on the polarity of the solvent, emission either from the planar or the twisted conformation of the excited state can occur. The nucleoside was converted to its triphosphate variant dCFLTP which was found to be a good substrate for DNA polymerases suitable for the enzymatic synthesis of oligonucleotide or DNA probes by primer extension or PCR. The fluorene-linked DNA can be used as fluorescent probes for DNA-protein (p53) or DNA-lipid interactions, exerting significant color changes visible even to the naked eye. They also appear to be suitable for time-dependent fluorescence shift studies on DNA, yielding information on DNA hydration and dynamics.
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Affiliation(s)
- Dmytro Dziuba
- Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Gilead & IOCB Research Center , Flemingovo nam. 2 , CZ-16610 Prague 6 , Czech Republic .
| | - Petr Pospíšil
- J. H eyrovský Institute of Physical Chemistry , Czech Academy of Sciences , Dolejskova 3 , CZ-182 23 Prague , Czech Republic
| | - Ján Matyašovský
- Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Gilead & IOCB Research Center , Flemingovo nam. 2 , CZ-16610 Prague 6 , Czech Republic .
| | - Jiří Brynda
- Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Gilead & IOCB Research Center , Flemingovo nam. 2 , CZ-16610 Prague 6 , Czech Republic .
| | - Dana Nachtigallová
- Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Gilead & IOCB Research Center , Flemingovo nam. 2 , CZ-16610 Prague 6 , Czech Republic .
| | - Lubomír Rulíšek
- Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Gilead & IOCB Research Center , Flemingovo nam. 2 , CZ-16610 Prague 6 , Czech Republic .
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Gilead & IOCB Research Center , Flemingovo nam. 2 , CZ-16610 Prague 6 , Czech Republic .
| | - Martin Hof
- J. H eyrovský Institute of Physical Chemistry , Czech Academy of Sciences , Dolejskova 3 , CZ-182 23 Prague , Czech Republic
| | - Michal Hocek
- Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Gilead & IOCB Research Center , Flemingovo nam. 2 , CZ-16610 Prague 6 , Czech Republic .
- Department of Organic Chemistry , Faculty of Science , Charles University in Prague , Hlavova 8 , CZ-12843 Prague 2 , Czech Republic
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128
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Houston JE, Kraft M, Mooney I, Terry AE, Scherf U, Evans RC. Charge-Mediated Localization of Conjugated Polythiophenes in Zwitterionic Model Cell Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:8141-8153. [PMID: 27434827 DOI: 10.1021/acs.langmuir.6b01828] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The selective engineering of conjugated polyelectrolyte (CPE)-phospholipid interfaces is poised to play a key role in the design of advanced biomedical and biotechnological devices. Herein, we report a strategic study to investigate the relationship between the charge of the CPE side group and their association with zwitterionic phospholipid bilayers. The interaction of dipalmitoylphosphatidylcholine (DPPC) phospholipid vesicles with a series of poly(thiophene)s bearing zwitterionic, cationic, or anionic terminal groups (P3Zwit, P3TMAHT and P3Anionic, respectively) has been probed. Although all CPEs showed an affinity for the zwitterionic vesicles, the calculated partition coefficients determined using photoluminescence spectroscopy suggested preferential incorporation within the lipid bilayer in the order P3Zwit > P3Anionic ≫ P3TMAHT. The polarity probe Prodan was used to further qualify the position of the CPE inside the vesicle bilayers via Förster resonance energy transfer (FRET) studies. The varying proximity of the CPEs to Prodan was reflected in the Stern-Volmer quenching constants and decreased in the order P3Anionic > P3TMAHT ≫ P3Zwit. Dynamic light scattering measurements showed an increase in the hydrodynamic diameter of the DPPC vesicles upon addition of each poly(thiophene), but to the greatest extent for P3Anionic. Small-angle neutron scattering studies also revealed that P3Anionic specifically increased the thickness of the headgroup region of the phospholipid bilayer. Epifluorescence and atomic force microscopy imaging showed that P3TMAHT formed amorphous agglomerates on the vesicle surface, P3Zwit was buried throughout the bilayer, and P3Anionic formed a shell of protruding chains around the surface, which promoted vesicle fusion. The global data indicate three distinctive modes of interaction for the poly(thiophene)s within DPPC vesicles, whereby the nature of the association is ultimately controlled by the pendant charge group on each CPE chain. Our results suggest that charge-mediated self-assembly may provide a simple and effective route to design luminescent CPE probes capable of specific localization within phospholipid membranes.
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Affiliation(s)
- Judith E Houston
- School of Chemistry and CRANN, University of Dublin, Trinity College , College Green, Dublin 2, Ireland
| | - Mario Kraft
- Macromolecular Chemistry Group (Buwmakro) and Institute for Polymer Technology, Bergische Universität Wuppertal , Gauss-Str. 20, D-42119 Wuppertal, Germany
| | - Ian Mooney
- School of Chemistry and CRANN, University of Dublin, Trinity College , College Green, Dublin 2, Ireland
| | - Ann E Terry
- ISIS, STFC, Rutherford Appleton Laboratory, Didcot, Oxon OX11 0QX, U.K
| | - Ullrich Scherf
- Macromolecular Chemistry Group (Buwmakro) and Institute for Polymer Technology, Bergische Universität Wuppertal , Gauss-Str. 20, D-42119 Wuppertal, Germany
| | - Rachel C Evans
- School of Chemistry and CRANN, University of Dublin, Trinity College , College Green, Dublin 2, Ireland
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129
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do Canto AMTM, Robalo JR, Santos PD, Carvalho AJP, Ramalho JPP, Loura LMS. Diphenylhexatriene membrane probes DPH and TMA-DPH: A comparative molecular dynamics simulation study. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:2647-2661. [PMID: 27475296 DOI: 10.1016/j.bbamem.2016.07.013] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 07/05/2016] [Accepted: 07/25/2016] [Indexed: 10/21/2022]
Abstract
Fluorescence spectroscopy and microscopy have been utilized as tools in membrane biophysics for decades now. Because phospholipids are non-fluorescent, the use of extrinsic membrane probes in this context is commonplace. Among the latter, 1,6-diphenylhexatriene (DPH) and its trimethylammonium derivative (TMA-DPH) have been extensively used. It is widely believed that, owing to its additional charged group, TMA-DPH is anchored at the lipid/water interface and reports on a bilayer region that is distinct from that of the hydrophobic DPH. In this study, we employ atomistic MD simulations to characterize the behavior of DPH and TMA-DPH in 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) and POPC/cholesterol (4:1) bilayers. We show that although the dynamics of TMA-DPH in these membranes is noticeably more hindered than that of DPH, the location of the average fluorophore of TMA-DPH is only ~3-4Å more shallow than that of DPH. The hindrance observed in the translational and rotational motions of TMA-DPH compared to DPH is mainly not due to significant differences in depth, but to the favorable electrostatic interactions of the former with electronegative lipid atoms instead. By revealing detailed insights on the behavior of these two probes, our results are useful both in the interpretation of past work and in the planning of future experiments using them as membrane reporters.
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Affiliation(s)
- António M T M do Canto
- Centro de Química de Évora e Departamento de Química, Escola de Ciências e Tecnologia, Colégio Luís Verney, Rua Romão Ramalho 59, P-7002-554 Évora, Portugal
| | - João R Robalo
- Centro de Química de Évora e Departamento de Química, Escola de Ciências e Tecnologia, Colégio Luís Verney, Rua Romão Ramalho 59, P-7002-554 Évora, Portugal; Theory and Bio-Systems Department, Max Planck Institute of Colloids and Interfaces, Wissenschaftspark Golm, D-14424 Potsdam, Germany
| | - Patrícia D Santos
- Centro de Química de Évora e Departamento de Química, Escola de Ciências e Tecnologia, Colégio Luís Verney, Rua Romão Ramalho 59, P-7002-554 Évora, Portugal
| | - Alfredo J Palace Carvalho
- Centro de Química de Évora e Departamento de Química, Escola de Ciências e Tecnologia, Colégio Luís Verney, Rua Romão Ramalho 59, P-7002-554 Évora, Portugal
| | - J P Prates Ramalho
- Centro de Química de Évora e Departamento de Química, Escola de Ciências e Tecnologia, Colégio Luís Verney, Rua Romão Ramalho 59, P-7002-554 Évora, Portugal
| | - Luís M S Loura
- Faculdade de Farmácia, Universidade de Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, P-3000-548 Coimbra, Portugal; Centro de Química de Coimbra, Largo D. Dinis, Rua Larga, P-3004-535 Coimbra, Portugal.
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130
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Collot M, Kreder R, Tatarets AL, Patsenker LD, Mely Y, Klymchenko AS. Bright fluorogenic squaraines with tuned cell entry for selective imaging of plasma membrane vs. endoplasmic reticulum. Chem Commun (Camb) 2016; 51:17136-9. [PMID: 26455447 DOI: 10.1039/c5cc06094j] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rational design of squaraine dyes with lipophilic and zwitterionic groups tunes cell entry, allowing for selective far-red/near-infrared imaging of plasma membrane vs. endoplasmic reticulum. They exhibit up to 110-fold fluorescence enhancement in biomembranes and enable cellular imaging at 1 nM concentration, which make them the brightest membrane probes to date.
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Affiliation(s)
- Mayeul Collot
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401, Illkirch, France.
| | - Rémy Kreder
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401, Illkirch, France.
| | - Anatoliy L Tatarets
- The State Scientific Institution "Institute for Single Crystals" of the National Academy of Sciences of Ukraine, 60, Lenin Ave., Kharkiv, 61001, Ukraine
| | - Leonid D Patsenker
- The State Scientific Institution "Institute for Single Crystals" of the National Academy of Sciences of Ukraine, 60, Lenin Ave., Kharkiv, 61001, Ukraine
| | - Yves Mely
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401, Illkirch, France.
| | - Andrey S Klymchenko
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401, Illkirch, France.
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131
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Taylor LS, Zhang GG. Physical chemistry of supersaturated solutions and implications for oral absorption. Adv Drug Deliv Rev 2016; 101:122-142. [PMID: 27013254 DOI: 10.1016/j.addr.2016.03.006] [Citation(s) in RCA: 270] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 03/10/2016] [Accepted: 03/11/2016] [Indexed: 10/22/2022]
Abstract
Amorphous solid dispersion (ASD) formulations are widely used for delivery of poorly soluble drugs for dissolution enhancement and bioavailability improvement. When administered, ASDs often exhibit fast dissolution to yield supersaturated solutions. The physical chemistry of these supersaturated solutions is not well understood. This review will discuss the concepts of solubility, supersaturation, and the connection to membrane transport rate. Liquid-liquid phase separation (LLPS), which occurs when the amorphous solubility is exceeded, leading to solutions with interesting properties is extensively discussed as a phenomenon that is relevant to all enabling formulations. The multiple physical processes occurring during dissolution of the ASD and during oral absorption are analyzed. The beneficial reservoir effect of a system that has undergone LLPS is demonstrated, both experimentally and conceptually. It is believed that formulations that rapidly supersaturate and subsequently undergo LLPS, with maintenance of the supersaturation at this maximum value throughout the absorption process, i.e. those that exhibit "spring and plateau" behavior, will give superior performance in terms of absorption.
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132
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Fichtl B, Shrivastava S, Schneider MF. Protons at the speed of sound: Predicting specific biological signaling from physics. Sci Rep 2016; 6:22874. [PMID: 27216038 PMCID: PMC4877590 DOI: 10.1038/srep22874] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 02/22/2016] [Indexed: 01/23/2023] Open
Abstract
Local changes in pH are known to significantly alter the state and activity of proteins and enzymes. pH variations induced by pulses propagating along soft interfaces (e.g. membranes) would therefore constitute an important pillar towards a physical mechanism of biological signaling. Here we investigate the pH-induced physical perturbation of a lipid interface and the physicochemical nature of the subsequent acoustic propagation. Pulses are stimulated by local acidification and propagate - in analogy to sound - at velocities controlled by the interface's compressibility. With transient local pH changes of 0.6 directly observed at the interface and velocities up to 1.4 m/s this represents hitherto the fastest protonic communication observed. Furthermore simultaneously propagating mechanical and electrical changes in the lipid interface are detected, exposing the thermodynamic nature of these pulses. Finally, these pulses are excitable only beyond a threshold for protonation, determined by the pKa of the lipid head groups. This protonation-transition plus the existence of an enzymatic pH-optimum offer a physical basis for intra- and intercellular signaling via sound waves at interfaces, where not molecular structure and mechano-enyzmatic couplings, but interface thermodynamics and thermodynamic transitions are the origin of the observations.
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Affiliation(s)
- Bernhard Fichtl
- University of Augsburg, Experimental Physics I, Augsburg, 86159, Germany.,Nanosystems Initiative Munich NIM, Schellingstr. 4, 80799 München, Germany
| | - Shamit Shrivastava
- Medizinische und Biologische Physik, Technische Universität Dortmund, Otto-Hahn Str. 4, 44227 Dortmund, Germany.,University of Oxford, IBME Old Road Campus Research Building Oxford, OX3 7DQ, UK
| | - Matthias F Schneider
- Medizinische und Biologische Physik, Technische Universität Dortmund, Otto-Hahn Str. 4, 44227 Dortmund, Germany
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133
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Majumdar A, Sarkar M. Small Mismatches in Fatty Acyl Tail Lengths Can Effect Non Steroidal Anti-Inflammatory Drug Induced Membrane Fusion. J Phys Chem B 2016; 120:4791-802. [PMID: 27153337 DOI: 10.1021/acs.jpcb.6b03583] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anupa Majumdar
- Chemical Sciences Division, Saha Institute of Nuclear Physics, 1/AF,
Bidhannagar, Kolkata 700064, India
| | - Munna Sarkar
- Chemical Sciences Division, Saha Institute of Nuclear Physics, 1/AF,
Bidhannagar, Kolkata 700064, India
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134
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Amaro M, Šachl R, Jurkiewicz P, Coutinho A, Prieto M, Hof M. Time-resolved fluorescence in lipid bilayers: selected applications and advantages over steady state. Biophys J 2016; 107:2751-2760. [PMID: 25517142 DOI: 10.1016/j.bpj.2014.10.058] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 10/23/2014] [Accepted: 10/29/2014] [Indexed: 01/23/2023] Open
Abstract
Fluorescence methods are versatile tools for obtaining dynamic and topological information about biomembranes because the molecular interactions taking place in lipid membranes frequently occur on the same timescale as fluorescence emission. The fluorescence intensity decay, in particular, is a powerful reporter of the molecular environment of a fluorophore. The fluorescence lifetime can be sensitive to the local polarity, hydration, viscosity, and/or presence of fluorescence quenchers/energy acceptors within several nanometers of the vicinity of a fluorophore. Illustrative examples of how time-resolved fluorescence measurements can provide more valuable and detailed information about a system than the time-integrated (steady-state) approach will be presented in this review: 1), determination of membrane polarity and mobility using time-dependent spectral shifts; 2), identification of submicroscopic domains by fluorescence lifetime imaging microscopy; 3), elucidation of membrane leakage mechanisms from dye self-quenching assays; and 4), evaluation of nanodomain sizes by time-resolved Förster resonance energy transfer measurements.
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Affiliation(s)
- Mariana Amaro
- Department of Biophysical Chemistry, J. Heyrovský Institute of Physical Chemistry of the Academy of Sciences of the Czech Republic, v.v.i., Prague, Czech Republic
| | - Radek Šachl
- Department of Biophysical Chemistry, J. Heyrovský Institute of Physical Chemistry of the Academy of Sciences of the Czech Republic, v.v.i., Prague, Czech Republic
| | - Piotr Jurkiewicz
- Department of Biophysical Chemistry, J. Heyrovský Institute of Physical Chemistry of the Academy of Sciences of the Czech Republic, v.v.i., Prague, Czech Republic
| | - Ana Coutinho
- Centre for Molecular Chemistry and Physics and Instituto de Nanociência e Nanotecnologia, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal; Departamento Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - Manuel Prieto
- Centre for Molecular Chemistry and Physics and Instituto de Nanociência e Nanotecnologia, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Martin Hof
- Department of Biophysical Chemistry, J. Heyrovský Institute of Physical Chemistry of the Academy of Sciences of the Czech Republic, v.v.i., Prague, Czech Republic.
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135
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Kocsis LS, Elbel KM, Hardigree BA, Brummond KM, Haidekker MA, Theodorakis EA. Cyclopenta[b]naphthalene cyanoacrylate dyes: synthesis and evaluation as fluorescent molecular rotors. Org Biomol Chem 2016; 13:2965-73. [PMID: 25614187 DOI: 10.1039/c4ob02563f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the design, synthesis and fluorescent profile of a family of environment-sensitive dyes in which a dimethylamino (donor) group is conjugated to a cyanoacrylate (acceptor) unit via a cyclopenta[b]naphthalene ring system. This assembly satisfies the typical D-π-A motif of a fluorescent molecular rotor and exhibits solvatochromic and viscosity-sensitive fluorescence emission. The central naphthalene ring system of these dyes was synthesized via a novel intramolecular dehydrogenative dehydro-Diels-Alder (IDDDA) reaction that permits incorporation of the donor and acceptor groups in variable positions around the aromatic core. A bathochromic shift of excitation and emission peaks was observed with increasing solvent polarity but the dyes exhibited a complex emission pattern with a second red emission band when dissolved in nonpolar solvents. Consistent with other known molecular rotors, the emission intensity increased with increasing viscosity. Interestingly, closer spatial proximity between the donor and the acceptor groups led to decreased viscosity sensitivity combined with an increased quantum yield. This observation indicates that structural hindrance of intramolecular rotation dominates when the donor and acceptor groups are in close proximity. The examined compounds give insight into how excited state intramolecular rotation can be influenced by both the solvent and the chemical structure.
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Affiliation(s)
- Laura S Kocsis
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, PA 15260, USA.
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136
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Karpenko IA, Niko Y, Yakubovskyi VP, Gerasov AO, Bonnet D, Kovtun YP, Klymchenko AS. Push-pull dioxaborine as fluorescent molecular rotor: far-red fluorogenic probe for ligand-receptor interactions. JOURNAL OF MATERIALS CHEMISTRY. C 2016; 4:3002-3009. [PMID: 28491320 PMCID: PMC5421572 DOI: 10.1039/c5tc03411f] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Fluorescent solvatochromic dyes and molecular rotors increase their popularity as fluorogenic probes for background-free detection of biomolecules in cellulo in no-wash conditions. Here, we introduce a push-pull boron-containing (dioxaborine) dye that presents unique spectroscopic behavior combining solvatochromism and molecular rotor properties. Indeed, in organic solvents, it shows strong red shifts in the absorption and fluorescence spectra upon increase in solvent polarity, typical for push-pull dyes. On the other hand, in polar solvents, where it probably undergoes Twisted Intramolecular Charge Transfer (TICT), the dye displays strong dependence of its quantum yield on solvent viscosity, in accordance to Förster-Hoffmann equation. In comparison to solvatochromic and molecular rotor dyes, dioxaborine derivative shows exceptional extinction coefficient (120,000 M-1 cm-1), high fluorescence quantum yields and red/far-red operating spectral range. It also displays much higher photostability in apolar media as compared to Nile Red, a fluorogenic dye of similar color. Its reactive carboxy derivative has been successfully grafted to carbetocin, a ligand of the oxytocin G protein-coupled receptor. This conjugate exhibits >1000-fold turn on between apolar 1,4-dioxane and water. It targets specifically the oxytocin receptor at the cell surface, which enables receptor imaging with excellent signal-to-background ratio (>130). We believe that presented push-pull dioxaborine dye opens a new page in the development of fluorogenic probes for bioimaging applications.
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Affiliation(s)
- Iuliia A. Karpenko
- Laboratoire d’Innovation Thérapeutique, UMR 7200 CNRS/Université de Strasbourg, Labex MEDALIS, Faculté de Pharmacie, 74 route du Rhin, 67401 Illkirch, France
| | - Yosuke Niko
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS/Université de Strasbourg, Faculté de Pharmacie, 74 route du Rhin, 67401 Illkirch, France
| | - Viktor P. Yakubovskyi
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska Street, 02094 Kyiv, Ukraine
| | - Andriy O. Gerasov
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska Street, 02094 Kyiv, Ukraine
| | - Dominique Bonnet
- Laboratoire d’Innovation Thérapeutique, UMR 7200 CNRS/Université de Strasbourg, Labex MEDALIS, Faculté de Pharmacie, 74 route du Rhin, 67401 Illkirch, France
| | - Yuriy P. Kovtun
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska Street, 02094 Kyiv, Ukraine
| | - Andrey S. Klymchenko
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS/Université de Strasbourg, Faculté de Pharmacie, 74 route du Rhin, 67401 Illkirch, France
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137
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Haidekker MA, Theodorakis EA. Ratiometric mechanosensitive fluorescent dyes: Design and applications. JOURNAL OF MATERIALS CHEMISTRY. C 2016; 4:2707-2718. [PMID: 27127631 PMCID: PMC4844075 DOI: 10.1039/c5tc03504j] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Fluorescent molecules, with their almost instantaneous response to external influences and relatively low-cost measurement instrumentation, have been attractive analytical tools and biosensors for centuries. More recently, advanced chemical synthesis and targeted design have accelerated the development of fluorescent probes. This article focuses on dyes with segmental mobility (known as fluorescent molecular rotors) that act as mechanosensors, which are known for their relationship of emission quantum yield with microviscosity. Fluorescence lifetime is directly related to quantum yield, but steady-state emission intensity is not. To remove confounding factors with steady-state instrumentation, dual-band emission dyes can be used, and molecular rotors have been developed that either have intrinsic dual emission or that have a non-sensitive reference unit to provide a calibration emission band. We report on theory, chemical structure, applications and targeted design of several classes of dual-emission molecular rotors.
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Affiliation(s)
- Mark A. Haidekker
- College of Engineering, University of Georgia, 597 D. W. Brooks Drive, Athens, GA 30602, USA
| | - Emmanuel A. Theodorakis
- Department of Chemistry & Biochemistry, University of California, San Diego, 9500 Gilman Drive MC: 0358, La Jolla, CA 92093-0358, USA. Fax: 1-858-822-0386; Tel: 1-858-822-0456
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138
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Baranczak A, Connelly S, Liu Y, Choi S, Grimster NP, Powers ET, Wilson IA, Kelly JW. Fluorogenic small molecules requiring reaction with a specific protein to create a fluorescent conjugate for biological imaging--what we know and what we need to learn. Biopolymers 2016; 101:484-95. [PMID: 24105107 DOI: 10.1002/bip.22407] [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: 06/21/2013] [Accepted: 09/03/2013] [Indexed: 01/03/2023]
Abstract
We seek fluorogenic small molecules that generate a fluorescent conjugate signal if and only if they react with a given protein-of-interest (i.e., small molecules for which noncovalent binding to the protein-of-interest is insufficient to generate fluorescence). Consequently, it is the new chemical entity afforded by the generally irreversible reaction between the small molecule and the protein-of-interest that enables the energy of an electron occupying the lowest unoccupied molecular orbital (LUMO) of the chromophore to be given off as a photon instead of being dissipated by nonradiative mechanisms in complex biological environments. This category of fluorogenic small molecules is created by starting with environmentally sensitive fluorophores that are modified by an essential functional group that efficiently quenches the fluorescence until a chemoselective reaction between that functional group and the protein-of-interest occurs, yielding the fluorescent conjugate. Fluorogenic small molecules are envisioned to be useful for a wide variety of applications, including live cell imaging without the requirement for washing steps and pulse-chase kinetic analyses of protein synthesis, trafficking, degradation, etc.
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Affiliation(s)
- Aleksandra Baranczak
- Department of Chemistry, The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA, 92037; Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, 92037
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139
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Liang B, Shao W, Zhu C, Wen G, Yue X, Wang R, Quan J, Du J, Bu X. Mitochondria-Targeted Approach: Remarkably Enhanced Cellular Bioactivities of TPP2a as Selective Inhibitor and Probe toward TrxR. ACS Chem Biol 2016; 11:425-34. [PMID: 26653078 DOI: 10.1021/acschembio.5b00708] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A mitochondria-targeted approach was developed to increase the cellular bioactivities of thioredoxin reductase (TrxR) inhibitors. By being conjugated with a triphenylphosphine (TPP) motif to a previously found TrxR inhibitor 2a, the resulted compound TPP2a can target subcellular mitochondria and efficiently inhibit cellular TrxR, leading to remarkably increased cellular ROS level and mitochondrial apoptosis of HeLa cancer cells. The cellular bioactivities of TPP2a, including its cytotoxicity against a panel of cancer cell lines, dramatically elevated compared with its parental compound 2a. The selectively and covalently interaction of TPP2a with subcellular mitochondrial TrxR was validated by fluorescent microscopy. Moreover, a nonspecific signal quenching coupled strategy was proposed based on the environmentally sensitive fluorescence of TPP2a, which makes it possible to label TrxR by removing the nonspecific backgrounds caused by TPP2a under complex biosettings such as cellular lysates and living cells, implicating a potential of TPP2a for TrxR-specific labeling.
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Affiliation(s)
- Baoxia Liang
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Weiyan Shao
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Cuige Zhu
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Gesi Wen
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xin Yue
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Ruimin Wang
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Junmin Quan
- Laboratory
of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Jun Du
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xianzhang Bu
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
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140
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Drabik D, Przybyło M, Chodaczek G, Iglič A, Langner M. The modified fluorescence based vesicle fluctuation spectroscopy technique for determination of lipid bilayer bending properties. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:244-52. [DOI: 10.1016/j.bbamem.2015.11.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 11/10/2015] [Accepted: 11/21/2015] [Indexed: 11/16/2022]
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141
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Niko Y, Didier P, Mely Y, Konishi GI, Klymchenko AS. Bright and photostable push-pull pyrene dye visualizes lipid order variation between plasma and intracellular membranes. Sci Rep 2016; 6:18870. [PMID: 26750324 PMCID: PMC4707542 DOI: 10.1038/srep18870] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 11/30/2015] [Indexed: 12/23/2022] Open
Abstract
Imaging lipid organization in cell membranes requires advanced fluorescent probes. Here, we show that a recently synthesized push-pull pyrene (PA), similarly to popular probe Laurdan, changes the emission maximum as a function of lipid order, but outperforms it by spectroscopic properties. In addition to red-shifted absorption compatible with common 405 nm diode laser, PA shows higher brightness and much higher photostability than Laurdan in apolar membrane environments. Moreover, PA is compatible with two-photon excitation at wavelengths >800 nm, which was successfully used for ratiometric imaging of coexisting liquid ordered and disordered phases in giant unilamellar vesicles. Fluorescence confocal microscopy in Hela cells revealed that PA efficiently stains the plasma membrane and the intracellular membranes at >20-fold lower concentrations, as compared to Laurdan. Finally, ratiometric imaging using PA reveals variation of lipid order within different cellular compartments: plasma membranes are close to liquid ordered phase of model membranes composed of sphingomyelin and cholesterol, while intracellular membranes are much less ordered, matching well membranes composed of unsaturated phospholipids without cholesterol. These differences in the lipid order were confirmed by fluorescence lifetime imaging (FLIM) at the blue edge of PA emission band. PA probe constitutes thus a new powerful tool for biomembrane research.
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Affiliation(s)
- Yosuke Niko
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401 ILLKIRCH Cedex, France
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1-H-134 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Pascal Didier
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401 ILLKIRCH Cedex, France
| | - Yves Mely
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401 ILLKIRCH Cedex, France
| | - Gen-ichi Konishi
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1-H-134 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Andrey S. Klymchenko
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401 ILLKIRCH Cedex, France
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142
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Gavvala K, Barthes NPF, Bonhomme D, Dabert-Gay AS, Debayle D, Michel BY, Burger A, Mély Y. A turn-on dual emissive nucleobase sensitive to mismatches and duplex conformational changes. RSC Adv 2016. [DOI: 10.1039/c6ra19061h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Herein, we demonstrate the on–off dual emissive behaviour of a fluorescent nucleoside sensitive towards DNA hybridization and conformational changes as well as detection of single nucleotide polymorphisms.
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Affiliation(s)
- Krishna Gavvala
- Laboratoire de Biophotonique et Pharmacologie
- UMR 7213
- Faculté de Pharmacie
- Université de Strasbourg
- CNRS
| | - Nicolas P. F. Barthes
- Institut de Chimie de Nice
- UMR 7272
- Université de Nice Sophia Antipolis
- CNRS
- Parc Valrose
| | - Dominique Bonhomme
- Institut de Chimie de Nice
- UMR 7272
- Université de Nice Sophia Antipolis
- CNRS
- Parc Valrose
| | - Anne Sophie Dabert-Gay
- Institut de Pharmacologie Moléculaire et Cellulaire
- UMR 6097
- Université de Nice Sophia Antipolis
- 660 Route des Lucioles
- 06560 Valbonne
| | - Delphine Debayle
- Institut de Pharmacologie Moléculaire et Cellulaire
- UMR 6097
- Université de Nice Sophia Antipolis
- 660 Route des Lucioles
- 06560 Valbonne
| | - Benoît Y. Michel
- Institut de Chimie de Nice
- UMR 7272
- Université de Nice Sophia Antipolis
- CNRS
- Parc Valrose
| | - Alain Burger
- Institut de Chimie de Nice
- UMR 7272
- Université de Nice Sophia Antipolis
- CNRS
- Parc Valrose
| | - Yves Mély
- Laboratoire de Biophotonique et Pharmacologie
- UMR 7213
- Faculté de Pharmacie
- Université de Strasbourg
- CNRS
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143
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Houston JE, Kraft M, Scherf U, Evans RC. Sequential detection of multiple phase transitions in model biological membranes using a red-emitting conjugated polyelectrolyte. Phys Chem Chem Phys 2016; 18:12423-7. [DOI: 10.1039/c6cp01553k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Charge-mediated assembly of an anionic poly(thiophene) leads to a highly sensitive probe of membrane order.
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Affiliation(s)
- Judith E. Houston
- School of Chemistry
- University of Dublin
- Trinity College
- Dublin 2
- Ireland
| | - Mario Kraft
- Macromolecular Chemistry Group (buwmacro) and Institute for Polymer Technology
- Bergische Universität Wuppertal
- Wuppertal
- Germany
| | - Ullrich Scherf
- Macromolecular Chemistry Group (buwmacro) and Institute for Polymer Technology
- Bergische Universität Wuppertal
- Wuppertal
- Germany
| | - Rachel C. Evans
- School of Chemistry
- University of Dublin
- Trinity College
- Dublin 2
- Ireland
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144
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Dziuba D, Jurkiewicz P, Cebecauer M, Hof M, Hocek M. A Rotational BODIPY Nucleotide: An Environment-Sensitive Fluorescence-Lifetime Probe for DNA Interactions and Applications in Live-Cell Microscopy. Angew Chem Int Ed Engl 2015; 55:174-8. [PMID: 26768820 DOI: 10.1002/anie.201507922] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 10/20/2015] [Indexed: 12/16/2022]
Abstract
Fluorescent probes for detecting the physical properties of cellular structures have become valuable tools in life sciences. The fluorescence lifetime of molecular rotors can be used to report on variations in local molecular packing or viscosity. We used a nucleoside linked to a meso-substituted BODIPY fluorescent molecular rotor (dC(bdp)) to sense changes in DNA microenvironment both in vitro and in living cells. DNA incorporating dC(bdp) can respond to interactions with DNA-binding proteins and lipids by changes in the fluorescence lifetimes in the range 0.5-2.2 ns. We can directly visualize changes in the local environment of exogenous DNA during transfection of living cells. Relatively long fluorescence lifetimes and extensive contrast for detecting changes in the microenvironment together with good photostability and versatility for DNA synthesis make this probe suitable for analysis of DNA-associated processes, cellular structures, and also DNA-based nanomaterials.
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Affiliation(s)
- Dmytro Dziuba
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Gilead Sciences & IOCB Research Center, Flemingovo nam. 2, 16610 Prague 6 (Czech Republic) http://www.uochb.cas.cz/hocekgroup
| | - Piotr Jurkiewicz
- J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejskova 3, 18223 Prague 8 (Czech Republic) http://www.hof-fluorescence-group.weebly.com/
| | - Marek Cebecauer
- J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejskova 3, 18223 Prague 8 (Czech Republic) http://www.hof-fluorescence-group.weebly.com/
| | - Martin Hof
- J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejskova 3, 18223 Prague 8 (Czech Republic) http://www.hof-fluorescence-group.weebly.com/.
| | - Michal Hocek
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Gilead Sciences & IOCB Research Center, Flemingovo nam. 2, 16610 Prague 6 (Czech Republic) http://www.uochb.cas.cz/hocekgroup. .,Department of Organic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 12843 Prague 2 (Czech Republic).
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145
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Dziuba D, Jurkiewicz P, Cebecauer M, Hof M, Hocek M. A Rotational BODIPY Nucleotide: An Environment-Sensitive Fluorescence-Lifetime Probe for DNA Interactions and Applications in Live-Cell Microscopy. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507922] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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146
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Yamaguchi E, Fukazawa A, Kosaka Y, Yokogawa D, Irle S, Yamaguchi S. A Benzophosphole P-Oxide with an Electron-Donating Group at 3-Position: Enhanced Fluorescence in Polar Solvents. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20150238] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Eriko Yamaguchi
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Aiko Fukazawa
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Youhei Kosaka
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Daisuke Yokogawa
- Department of Chemistry, Graduate School of Science, Nagoya University
- Institute of Transformative Bio-molecules (WPI-ITbM), Nagoya University
| | - Stephan Irle
- Department of Chemistry, Graduate School of Science, Nagoya University
- Institute of Transformative Bio-molecules (WPI-ITbM), Nagoya University
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate School of Science, Nagoya University
- Institute of Transformative Bio-molecules (WPI-ITbM), Nagoya University
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147
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Capan A, Bostan MS, Mozioglu E, Akoz M, Goren AC, Eroglu MS, Ozturk T. Sequence specific recognition of ssDNA by fluorophore 3-hydroxyflavone. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 153:391-6. [PMID: 26555642 DOI: 10.1016/j.jphotobiol.2015.10.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Revised: 10/01/2015] [Accepted: 10/23/2015] [Indexed: 01/30/2023]
Abstract
A fully water soluble 3-hydroxyflavone (3HF) derivative, N-(3-hydroxy-4'-flavonyl)-N,N,N-trimethylammonium sulfate (3HFNMe3) was synthesized. Investigation of its emissions at varying wavelengths revealed that it had three emission bands of normal (N(⁎)), anionic (A(⁎)) and tautomeric (T(⁎)), in ultrapure water. Recognition of single-stranded ten ssDNA chains, having different nucleotide sequences was studied, using the ratiometric change of the intensities of the two bands (A(⁎)/T(⁎)), depending upon the varying environment of the 3HFNMe3 with different ssDNA chains. Addition of the ssDNA chains to the 3HFNMe3 solution caused gradual quenching of the A(⁎) band and had almost no effect on the T(⁎) band. As the ratios of the two bands (A(⁎)/T(⁎)) vs increasing amount of the ssDNAs generated characteristic curves for each ssDNA chain, it became possible to identify the chains with their characteristic curves.
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Affiliation(s)
- Asli Capan
- Department of Chemistry, Faculty of Science, Istanbul Technical University, Maslak, Istanbul 34469, Turkey
| | - Muge S Bostan
- Marmara University, Department of Chemical Engineering, 34722 Kadikoy, Istanbul, Turkey
| | - Erkan Mozioglu
- TUBITAK UME, Chemistry Group Laboratories, PO Box 54, 41470 Gebze-Kocaeli, Turkey
| | - Muslum Akoz
- TUBITAK UME, Chemistry Group Laboratories, PO Box 54, 41470 Gebze-Kocaeli, Turkey
| | - Ahmet C Goren
- TUBITAK UME, Chemistry Group Laboratories, PO Box 54, 41470 Gebze-Kocaeli, Turkey
| | - Mehmet S Eroglu
- Marmara University, Department of Chemical Engineering, 34722 Kadikoy, Istanbul, Turkey; TUBITAK UME, Chemistry Group Laboratories, PO Box 54, 41470 Gebze-Kocaeli, Turkey
| | - Turan Ozturk
- Department of Chemistry, Faculty of Science, Istanbul Technical University, Maslak, Istanbul 34469, Turkey; TUBITAK UME, Chemistry Group Laboratories, PO Box 54, 41470 Gebze-Kocaeli, Turkey
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148
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Miller RD, Yusoff RM, Swope WC, Rice JE, Carr AC, Parker AJ, Sly J, Appel EA, Nguyen T, Piunova V. Water soluble, biodegradable amphiphilic polymeric nanoparticles and the molecular environment of hydrophobic encapsulates: Consistency between simulation and experiment. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.10.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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149
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HPLC–FLD and spectrofluorometer apparatus: How to best detect fluorescent probe-loaded niosomes in biological samples. Colloids Surf B Biointerfaces 2015; 135:575-580. [DOI: 10.1016/j.colsurfb.2015.08.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 07/28/2015] [Accepted: 08/05/2015] [Indexed: 02/06/2023]
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150
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Iversen L, Mathiasen S, Larsen JB, Stamou D. Membrane curvature bends the laws of physics and chemistry. Nat Chem Biol 2015; 11:822-5. [DOI: 10.1038/nchembio.1941] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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