1
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Berthomé Y, Gerber J, Hanser F, Riché S, Humbert N, Valencia C, Villa P, Karpenko J, Florès O, Bonnet D. Rational Design of Cyanine-Based Fluorogenic Dimers to Reduce Nonspecific Interactions with Albumin and Lipid Bilayers: Application to Highly Sensitive Imaging of GPCRs in Living Cells. Bioconjug Chem 2024. [PMID: 38982626 DOI: 10.1021/acs.bioconjchem.4c00147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Fluorogenic dimers with polarity-sensitive folding are powerful probes for live-cell bioimaging. They switch on their fluorescence only after interacting with their targets, thus leading to a high signal-to-noise ratio in wash-free bioimaging. We previously reported the first near-infrared fluorogenic dimers derived from cyanine 5.5 dyes for the optical detection of G protein-coupled receptors. Owing to their hydrophobic character, these dimers are prone to form nonspecific interactions with proteins such as albumin and with the lipid bilayer of the cell membrane resulting in a residual background fluorescence in complex biological media. Herein, we report the rational design of new fluorogenic dimers derived from cyanine 5. By modulating the chemical structure of the cyanine units, we discovered that the two asymmetric cyanine 5.25 dyes were able to form intramolecular H-aggregates and self-quenched in aqueous media. Moreover, the resulting original dimeric probes enabled a significant reduction of the nonspecific interactions with bovine serum albumin and lipid bilayers compared with the first generation of cyanine 5.5 dimers. Finally, the optimized asymmetric fluorogenic dimer was grafted to carbetocin for the specific imaging of the oxytocin receptor under no-wash conditions directly in cell culture media, notably improving the signal-to-background ratio compared with the previous generation of cyanine 5.5 dimers.
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Affiliation(s)
- Yann Berthomé
- Laboratoire d'Innovation Thérapeutique, Faculté de pharmacie UMR 7200 CNRS/Université de Strasbourg, Institut du Médicament de Strasbourg, F-67000 Strasbourg, France
| | - Julie Gerber
- Laboratoire d'Innovation Thérapeutique, Faculté de pharmacie UMR 7200 CNRS/Université de Strasbourg, Institut du Médicament de Strasbourg, F-67000 Strasbourg, France
| | - Fabien Hanser
- Laboratoire d'Innovation Thérapeutique, Faculté de pharmacie UMR 7200 CNRS/Université de Strasbourg, Institut du Médicament de Strasbourg, F-67000 Strasbourg, France
| | - Stéphanie Riché
- Laboratoire d'Innovation Thérapeutique, Faculté de pharmacie UMR 7200 CNRS/Université de Strasbourg, Institut du Médicament de Strasbourg, F-67000 Strasbourg, France
| | - Nicolas Humbert
- Laboratoire de Bioimagerie et Pathologies, Faculté de pharmacie, UMR 7021 CNRS/Université de Strasbourg, F-67000 Strasbourg, France
| | - Christel Valencia
- PCBIS Plateforme de chimie biologie intégrative de Strasbourg, UAR 3286 CNRS/Université de Strasbourg, F-67000 Strasbourg, France
| | - Pascal Villa
- PCBIS Plateforme de chimie biologie intégrative de Strasbourg, UAR 3286 CNRS/Université de Strasbourg, F-67000 Strasbourg, France
| | - Julie Karpenko
- Laboratoire d'Innovation Thérapeutique, Faculté de pharmacie UMR 7200 CNRS/Université de Strasbourg, Institut du Médicament de Strasbourg, F-67000 Strasbourg, France
| | - Océane Florès
- Laboratoire d'Innovation Thérapeutique, Faculté de pharmacie UMR 7200 CNRS/Université de Strasbourg, Institut du Médicament de Strasbourg, F-67000 Strasbourg, France
| | - Dominique Bonnet
- Laboratoire d'Innovation Thérapeutique, Faculté de pharmacie UMR 7200 CNRS/Université de Strasbourg, Institut du Médicament de Strasbourg, F-67000 Strasbourg, France
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2
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Paez‐Perez M, Kuimova MK. Molecular Rotors: Fluorescent Sensors for Microviscosity and Conformation of Biomolecules. Angew Chem Int Ed Engl 2024; 63:e202311233. [PMID: 37856157 PMCID: PMC10952837 DOI: 10.1002/anie.202311233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/17/2023] [Accepted: 10/17/2023] [Indexed: 10/20/2023]
Abstract
The viscosity and crowding of biological environment are considered vital for the correct cellular function, and alterations in these parameters are known to underly a number of pathologies including diabetes, malaria, cancer and neurodegenerative diseases, to name a few. Over the last decades, fluorescent molecular probes termed molecular rotors proved extremely useful for exploring viscosity, crowding, and underlying molecular interactions in biologically relevant settings. In this review, we will discuss the basic principles underpinning the functionality of these probes and will review advances in their use as sensors for lipid order, protein crowding and conformation, temperature and non-canonical nucleic acid structures in live cells and other relevant biological settings.
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Affiliation(s)
- Miguel Paez‐Perez
- Department of Chemistry, Imperial College London, MSRHImperial College LondonWood LaneLondonW12 0BZUK
| | - Marina K. Kuimova
- Department of Chemistry, Imperial College London, MSRHImperial College LondonWood LaneLondonW12 0BZUK
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3
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Kulinich AV, Ishchenko AA. Design and Photonics of Merocyanine Dyes. CHEM REC 2024; 24:e202300262. [PMID: 37850545 DOI: 10.1002/tcr.202300262] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 09/21/2023] [Indexed: 10/19/2023]
Abstract
Merocyanines, thanks to their easily adjustable electronic structure, appear to be the most versatile and promising functional dyes. Their D-π-A framework offers ample opportunities for custom design through variations in both donor/acceptor end-groups and the π-conjugated polymethine chain, and leads to a broad range of practical properties, including noticeable solvatochromism, high polarizability/hyperpolarizabilities, and the ability to sensitize various physicochemical processes. Accordingly, merocyanines are applied and extensively studied in various fields, such as light-converting materials for optoelectronics, nonlinear optics, optical storage, solar cells, fluorescent probes, and antitumor agents in photodynamic therapy. This review encompasses both classical and novel more important publications on the structure-property relationships in merocyanines, with particular emphasis on the results by A. I. Kiprianov and his followers in Institute of Organic Chemistry in Kyiv, Ukraine.
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Affiliation(s)
- Andrii V Kulinich
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Akademika Kukharya St., 02094, Kyiv, Ukraine
| | - Alexander A Ishchenko
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Akademika Kukharya St., 02094, Kyiv, Ukraine
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4
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Pivovarenko VG, Klymchenko AS. Fluorescent Probes Based on Charge and Proton Transfer for Probing Biomolecular Environment. CHEM REC 2024; 24:e202300321. [PMID: 38158338 DOI: 10.1002/tcr.202300321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 12/11/2023] [Indexed: 01/03/2024]
Abstract
Fluorescent probes for sensing fundamental properties of biomolecular environment, such as polarity and hydration, help to study assembly of lipids into biomembranes, sensing interactions of biomolecules and imaging physiological state of the cells. Here, we summarize major efforts in the development of probes based on two photophysical mechanisms: (i) an excited-state intramolecular charge transfer (ICT), which is represented by fluorescent solvatochromic dyes that shift their emission band maximum as a function of environment polarity and hydration; (ii) excited-state intramolecular proton transfer (ESIPT), with particular focus on 5-membered cyclic systems, represented by 3-hydroxyflavones, because they exhibit dual emission sensitive to the environment. For both ICT and ESIPT dyes, the design of the probes and their biological applications are summarized. Thus, dyes bearing amphiphilic anchors target lipid membranes and report their lipid organization, while targeting ligands direct them to specific organelles for sensing their local environment. The labels, amino acid and nucleic acid analogues inserted into biomolecules enable monitoring their interactions with membranes, proteins and nucleic acids. While ICT probes are relatively simple and robust environment-sensitive probes, ESIPT probes feature high information content due their dual emission. They constitute a powerful toolbox for addressing multitude of biological questions.
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Affiliation(s)
- Vasyl G Pivovarenko
- Department of Chemistry, Kyiv National Taras Shevchenko University, 01033, Kyiv, Ukraine
| | - Andrey S Klymchenko
- Laboratoire de Bioimagerie et Pathologies, UMR 7021 CNRS, ITI SysChem, Université de Strasbourg, 67401, Illkirch, France
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5
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Mondal IC, Rawat P, Galkin M, Deka S, Karmakar A, Mondal P, Ghosh S. Julolidine-based small molecular probes for fluorescence imaging of RNA in live cells. Org Biomol Chem 2023; 21:7831-7840. [PMID: 37728395 DOI: 10.1039/d3ob01314f] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Intracellular RNA imaging with organic small molecular probes has been an intense topic, although the number of such reported dyes, particularly dyes with high quantum yields and long wavelength excitation/emission, is quite limited. The present work reports the design and synthesis of three cationic julolidine-azolium conjugates (OX-JLD, BTZ-JLD and SEZ-JLD) as turn-on fluorescent probes with appreciably high quantum yields and brightness upon interaction with RNA. A structure-efficiency relationship has been established for their potential for the interaction and imaging of intracellular RNA. Given their chemical structure, the free rotation between the donor and the acceptor gets restricted when the probes bind with RNA resulting in strong fluorescence emission towards a higher wavelength upon photoexcitation. A detailed investigation revealed that the photophysical properties and the optical responses of two probes, viz. BTZ-JLD and SEZ-JLD, towards RNA are very promising and qualify them to be suitable candidates for biological studies, particularly for cellular imaging applications. The probes allow imaging of intracellular RNA with prominent staining of nucleoli in live cells under a range of physiological conditions. The results of the cellular digest test established the appreciable RNA selectivity of BTZ-JLD and SEZ-JLD inside the cellular environment. Moreover, a comparison between the relative intensity profile of SEZ-JLD before and after the RNA-digestion test inside the cellular environment indicated that the interference of cellular viscosity in fluorescence enhancement is insignificant, and hence, SEZ-JLD can be used as a cell membrane permeable cationic molecular probe for deep-red imaging of intracellular RNA with a good degree of selectivity.
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Affiliation(s)
- Iswar Chandra Mondal
- School of Chemical Sciences, Indian Institute of Technology Mandi, H.P-175005, India
| | - Priya Rawat
- School of Biosciences and Bioengineering, Indian Institute of Technology Mandi, H.P-175005, India
| | - Maksym Galkin
- Laboratory of Chemical Biology, The Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 6 16610, Czech Republic
| | - Snata Deka
- School of Chemical Sciences, Indian Institute of Technology Mandi, H.P-175005, India
| | - Anirban Karmakar
- Centro de Química Estrutural, Instituto Superior Técnico, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Prosenjit Mondal
- School of Biosciences and Bioengineering, Indian Institute of Technology Mandi, H.P-175005, India
| | - Subrata Ghosh
- School of Chemical Sciences, Indian Institute of Technology Mandi, H.P-175005, India
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6
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Xu L, Huang Y, Peng H, Xu W, Yi X, He G. Triphenylamine-Modified Cinnamaldehyde Derivate as a Molecular Sensor for Viscosity Detection in Liquids. ACS OMEGA 2023; 8:13213-13221. [PMID: 37065079 PMCID: PMC10099141 DOI: 10.1021/acsomega.3c00488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 03/07/2023] [Indexed: 06/19/2023]
Abstract
Liquid safety is considered a serious public health problem; a convenient and effective viscosity determination method has been regarded as one of the powerful means to detect liquid safety. Herein, one kind of triphenylamine-modified cinnamaldehyde-based fluorescent sensor (3-(4'-(diphenylamino)-[1,1'-biphenyl]-4-yl)acrylaldehyde (DPABA)) has been developed for sensing viscosity fluctuations in a liquid system, where a cinnamaldehyde derivative was extracted from one kind of natural plant cinnamon and acted as an acceptor, which has been combined with a triphenylamine derivate via the Suzuki coupling reaction within one facile step. Twisted intramolecular charge transfer (TICT) was observed, and the rotation could be restricted in the high-viscosity microenvironment; thus, the fluorescent signal was released at 548 nm. Featured with a larger Stokes shift (223.8 nm in water, 145.0 nm in glycerol), high adaptability, sensitivity, selectivity, and good photostability, the capability of high signal-to-noise ratio sensing was achieved. Importantly, this sensor DPABA has achieved noninvasively identifying thickening efficiency investigation, and viscosity fluctuations during the liquid deterioration program have been screened as well. We believed that this unique strategy can accelerate intelligent molecular platforms toward liquid quality and safety inspection.
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Affiliation(s)
- Lingfeng Xu
- Key
Laboratory of Biodiversity and Ecological Engineering of Jiangxi Province, Jinggangshan University, Ji’an 343009, Jiangxi, China
- State
Key Laboratory of Luminescent Materials & Devices, College of
Materials Science & Engineering, South
China University of Technology, Guangzhou 510640, China
| | - Yanrong Huang
- School
of Modern Agriculture and Forestry Engineering, Ji’an Vocational and Technical College, Ji’an 343009, Jiangxi, China
| | - Hui Peng
- Key
Laboratory of Biodiversity and Ecological Engineering of Jiangxi Province, Jinggangshan University, Ji’an 343009, Jiangxi, China
| | - Wenyan Xu
- Key
Laboratory of Biodiversity and Ecological Engineering of Jiangxi Province, Jinggangshan University, Ji’an 343009, Jiangxi, China
| | - Xiuguang Yi
- School
of Chemistry and Chemical Engineering, Jinggangshan
University, Ji’an 343009, Jiangxi, China
| | - Genhe He
- Key
Laboratory of Biodiversity and Ecological Engineering of Jiangxi Province, Jinggangshan University, Ji’an 343009, Jiangxi, China
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7
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Bui TT, Péralta S, Dumur F. Synthesis and Optical Properties of a Series of Push-Pull Dyes Based on Pyrene as the Electron Donor. Molecules 2023; 28:molecules28031489. [PMID: 36771166 PMCID: PMC9920555 DOI: 10.3390/molecules28031489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/31/2023] [Accepted: 01/31/2023] [Indexed: 02/08/2023] Open
Abstract
Fifteen push-pull dyes comprising the tetracyclic polyaromatic pyrene have been designed and synthesized. The optical properties of the fifteen dyes have been examined in twenty-two solvents of different polarities. Surprisingly, contrarily to what is classically observed for push-pull dyes of D-π-A structures, a negative solvatochromism could be found for numerous dyes. The photoluminescence and thermal properties of the dyes were also examined. Theoretical calculations were carried out to support the experimental results.
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Affiliation(s)
| | | | - Frédéric Dumur
- CY Cergy Paris Université, LPPI, F-95000 Cergy, France
- Aix Marseille Univ CNRS, ICR UMR7273, F-13397 Marseille, France
- CY Cergy Paris Université, CY Advanced Studies (CY AS), F-95000 Cergy, France
- Correspondence:
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8
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Filho MS, Moraes ES, da Luz LC, da Silveira Santos F, Martin AR, Benhida R, Duarte LGTA, Rodembusch FS. Synthesis, photophysics, and theoretical calculations of styryl-based fluorophores harboring substituted benzothiazole acceptors. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Green synthesis of BOSCHIBAs: Photo- and water stability, cytotoxicity assays, and theoretical calculations. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Synthesis and Strong Solvatochromism of Push-Pull Thienylthiazole Boron Complexes. Molecules 2022; 27:molecules27175510. [PMID: 36080276 PMCID: PMC9457742 DOI: 10.3390/molecules27175510] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/20/2022] [Accepted: 08/22/2022] [Indexed: 11/16/2022] Open
Abstract
The solvatochromic behavior of two donor-π bridge-acceptor (D-π-A) compounds based on the 2-(3-boryl-2-thienyl)thiazole π-linker and indandione acceptor moiety are investigated. DFT/TD-DFT calculations were performed in combination with steady-state absorption and emission measurements, along with electrochemical studies, to elucidate the effect of two different strongly electron-donating hydrazonyl units on the solvatochromic and fluorescence behavior of these compounds. The Lippert–Mataga equation was used to estimate the change in dipole moments (Δµ) between ground and excited states based on the measured spectroscopic properties in solvents of varying polarity with the data being supported by theoretical studies. The two asymmetrical D-π-A molecules feature strong solvatochromic shifts in fluorescence of up to ~4300 cm−1 and a concomitant change of the emission color from yellow to red. These changes were accompanied by an increase in Stokes shift to reach values as large as ~5700–5800 cm−1. Quantum yields of ca. 0.75 could be observed for the N,N-dimethylhydrazonyl derivative in nonpolar solvents, which gradually decreased along with increasing solvent polarity, as opposed to the consistently reduced values obtained for the N,N-diphenylhydrazonyl derivative of up to ca. 0.20 in nonpolar solvents. These two push–pull molecules are contrasted with a structurally similar acceptor-π bridge-acceptor (A-π-A) compound.
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11
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Del Frate G, Macchiagodena M, Akhunzada MJ, D'Autilia F, Catte A, Bhattacharjee N, Barone V, Cardarelli F, Brancato G. Probing Liquid-Ordered and Disordered Phases in Lipid Model Membranes: A Combined Theoretical and Spectroscopic Study of a Fluorescent Molecular Rotor. J Phys Chem B 2022; 126:480-491. [PMID: 35001625 PMCID: PMC8785181 DOI: 10.1021/acs.jpcb.1c08324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
An integrated theoretical/experimental
strategy has been applied
to the study of environmental effects on the spectroscopic parameters
of 4-(diphenylamino)phtalonitrile (DPAP), a fluorescent molecular
rotor. The computational part starts from the development of an effective
force field for the first excited electronic state of DPAP and proceeds
through molecular dynamics simulations in solvents of different polarities
toward the evaluation of Stokes shifts by quantum mechanics/molecular
mechanics (QM/MM) approaches. The trends of the computed results closely
parallel the available experimental results thus giving confidence
to the interpretation of new experimental studies of the photophysics
of DPAP in lipid bilayers. In this context, results show unambiguously
that both flexible dihedral angles and global rotations are significantly
retarded in a cholesterol/DPPC lipid matrix with respect to the DOPC
matrix, thus confirming the sensitivity of DPAP to probe different
environments and, therefore, its applicability as a probe for detecting
different structures and levels of plasma membrane organization.
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Affiliation(s)
| | | | | | - Francesca D'Autilia
- Center for Nanotechnology Innovation@NEST (CNI@NEST), Piazza San Silvestro 12, I-56127 Pisa, Italy
| | - Andrea Catte
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | | | - Vincenzo Barone
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy.,Istituto Nazionale di Fisica Nucleare(INFN), Largo Pontecorvo 3, I-56 127 Pisa, Italy.,Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Via della Lastruccia 3, I-50 019 Sesto Fiorentino, Florence, Italy
| | | | - Giuseppe Brancato
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy.,Istituto Nazionale di Fisica Nucleare(INFN), Largo Pontecorvo 3, I-56 127 Pisa, Italy.,Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Via della Lastruccia 3, I-50 019 Sesto Fiorentino, Florence, Italy
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12
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Choi NE, Kim EJ, Lee J. A fluorescent molecular rotor for the in situ imaging of latent fingerprints. RSC Adv 2022; 12:33180-33186. [DOI: 10.1039/d2ra06728e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 11/14/2022] [Indexed: 11/23/2022] Open
Abstract
We developed a fluorescent molecular rotor that responds to hydrophobic and viscous environments and visualizes latent fingerprints with level 3 details.
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Affiliation(s)
- Na-Eun Choi
- School of Biopharmaceutical and Medical Sciences, Sungshin University, Seoul 01133, Republic of Korea
| | - Eun-Ji Kim
- School of Biopharmaceutical and Medical Sciences, Sungshin University, Seoul 01133, Republic of Korea
| | - Jiyoun Lee
- School of Biopharmaceutical and Medical Sciences, Sungshin University, Seoul 01133, Republic of Korea
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13
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Xu L, Wu K, Han R, Sui Y, Huang C, Huang W, Liu L. Visual detection of viscosity through activatable molecular rotor with aggregation-induced emission. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 261:120016. [PMID: 34091356 DOI: 10.1016/j.saa.2021.120016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 05/20/2021] [Accepted: 05/23/2021] [Indexed: 06/12/2023]
Abstract
Food safety has become one of the urgent affairs in the global public health studies, and irregular viscosity is closely associated with the food spoilage extent. In this study, one kind of activatable molecular rotor (TPA-PBZ) based on triphenylamine derivates has been synthesized via the Schiff base condensation reaction. This rotor is comprised by donor-accepter conjugated structure, with aggregation induced-emission feature and a large Stokes shift of 160 nm in water. The rotation of aromatic rings in TPA-PBZ is restricted in high-viscosity microenvironment, with the gradually increasing fluorescence emission signal at 568 nm. Significantly, this rotor TPA-PBZ has successfully been applied not only in the determination of thickening effects of food gum, but also in the detection of viscosity enhancement during the liquid food spoilage process. This molecular rotor can be utilized as an intelligent monitor platform for food quality and safety inspection in viscosity-related conditions.
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Affiliation(s)
- Lingfeng Xu
- School of Chemistry and Chemical Engineering, Jinggangshan University, Ji'an, Jiangxi 343009, China; State Key Laboratory of Luminescent Materials & Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, College of Materials Science & Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Kui Wu
- School of Chemistry and Chemical Engineering, Jinggangshan University, Ji'an, Jiangxi 343009, China
| | - Runlin Han
- School of Petroleum and Chemical Engineering, Dalian University of Technology, Panjin 124221, China
| | - Yan Sui
- School of Chemistry and Chemical Engineering, Jinggangshan University, Ji'an, Jiangxi 343009, China
| | - Chunfang Huang
- School of Chemistry and Chemical Engineering, Jinggangshan University, Ji'an, Jiangxi 343009, China
| | - Wei Huang
- School of Chemistry and Chemical Engineering, Jinggangshan University, Ji'an, Jiangxi 343009, China
| | - Limin Liu
- School of Chemistry and Chemical Engineering, Jinggangshan University, Ji'an, Jiangxi 343009, China.
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14
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Zhang J, Rakhimbekova A, Duan X, Yin Q, Foss CA, Fan Y, Xu Y, Li X, Cai X, Kutil Z, Wang P, Yang Z, Zhang N, Pomper MG, Wang Y, Bařinka C, Yang X. A prostate-specific membrane antigen activated molecular rotor for real-time fluorescence imaging. Nat Commun 2021; 12:5460. [PMID: 34526506 PMCID: PMC8443597 DOI: 10.1038/s41467-021-25746-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 08/25/2021] [Indexed: 12/03/2022] Open
Abstract
Surgery is an efficient way to treat localized prostate cancer (PCa), however, it is challenging to demarcate rapidly and accurately the tumor boundary intraoperatively, as existing tumor detection methods are seldom performed in real-time. To overcome those limitations, we develop a fluorescent molecular rotor that specifically targets the prostate-specific membrane antigen (PSMA), an established marker for PCa. The probes have picomolar affinity (IC50 = 63-118 pM) for PSMA and generate virtually instantaneous onset of robust fluorescent signal proportional to the concentration of the PSMA-probe complex. In vitro and ex vivo experiments using PCa cell lines and clinical samples, respectively, indicate the utility of the probe for biomedical applications, including real-time monitoring of endocytosis and tumor staging. Experiments performed in a PCa xenograft model reveal suitability of the probe for imaging applications in vivo.
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Affiliation(s)
- Jingming Zhang
- Department of Nuclear Medicine, Peking University First Hospital, 100034, Beijing, China
| | - Anastasia Rakhimbekova
- Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 25250, Vestec, Czech Republic
| | - Xiaojiang Duan
- Department of Nuclear Medicine, Peking University First Hospital, 100034, Beijing, China
| | - Qingqing Yin
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, 100191, Beijing, China
| | - Catherine A Foss
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Yan Fan
- Department of Nuclear Medicine, Peking University First Hospital, 100034, Beijing, China
| | - Yangyang Xu
- Department of Urology, Peking University First Hospital, 100034, Beijing, China
- The Institute of Urology, Peking University, 100034, Beijing, China
- National Urological Cancer Center, 100034, Beijing, China
- Beijing Key Laboratory of Urogenital Diseases (Male) Molecular Diagnosis and Treatment Center, 10034, Beijing, China
| | - Xuesong Li
- Department of Urology, Peking University First Hospital, 100034, Beijing, China
- The Institute of Urology, Peking University, 100034, Beijing, China
- National Urological Cancer Center, 100034, Beijing, China
- Beijing Key Laboratory of Urogenital Diseases (Male) Molecular Diagnosis and Treatment Center, 10034, Beijing, China
| | - Xuekang Cai
- Department of Nuclear Medicine, Peking University First Hospital, 100034, Beijing, China
| | - Zsofia Kutil
- Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 25250, Vestec, Czech Republic
| | - Pengyuan Wang
- Department of General Surgery, Peking University First Hospital, 100034, Beijing, China
| | - Zhi Yang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/ Beijing), Department of Nuclear Medicine, Peking University Cancer Hospital & Institute, 100142, Beijing, China
| | - Ning Zhang
- Translational Cancer Research Center, Peking University First Hospital, 100034, Beijing, China
| | - Martin G Pomper
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Yiguang Wang
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, 100191, Beijing, China.
| | - Cyril Bařinka
- Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 25250, Vestec, Czech Republic.
| | - Xing Yang
- Department of Nuclear Medicine, Peking University First Hospital, 100034, Beijing, China.
- Institute of Medical Technology, Peking University Health Science Center, 100191, Beijing, China.
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15
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Fam KT, Saladin L, Klymchenko AS, Collot M. Confronting molecular rotors and self-quenched dimers as fluorogenic BODIPY systems to probe biotin receptors in cancer cells. Chem Commun (Camb) 2021; 57:4807-4810. [PMID: 33982709 DOI: 10.1039/d1cc00108f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Probing receptors at the cell surface to monitor their expression level can be performed with fluorogenic dyes. Biotin receptors (BRs) are particularly interesting as they are overexpressed in cancer cells. Herein, to image BRs, we adapted and systematically compared two fluorogenic systems based on BODIPYs: a molecular rotor and a self-quenched dimer that light up in response to high viscosity and low polarity of the membrane, respectively. The fluorogenic dimer proved to be more efficient than the rotor and allowed BRs to be imaged in cancer cells, which can effectively be discriminated from non-cancer cells.
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Affiliation(s)
- Kyong T Fam
- Laboratoire de Bioimagerie et Pathologies, UMR 7021, CNRS/Université de Strasbourg, 74 route du Rhin, Illkirch-Graffenstaden 67401, France.
| | - Lazare Saladin
- Laboratoire de Bioimagerie et Pathologies, UMR 7021, CNRS/Université de Strasbourg, 74 route du Rhin, Illkirch-Graffenstaden 67401, France.
| | - Andrey S Klymchenko
- Laboratoire de Bioimagerie et Pathologies, UMR 7021, CNRS/Université de Strasbourg, 74 route du Rhin, Illkirch-Graffenstaden 67401, France.
| | - Mayeul Collot
- Laboratoire de Bioimagerie et Pathologies, UMR 7021, CNRS/Université de Strasbourg, 74 route du Rhin, Illkirch-Graffenstaden 67401, France.
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16
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Niko Y, Klymchenko AS. Emerging Solvatochromic Push-Pull Dyes for Monitoring the Lipid Order of Biomembranes in Live Cells. J Biochem 2021; 170:163-174. [PMID: 34213537 DOI: 10.1093/jb/mvab078] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 06/21/2021] [Indexed: 11/13/2022] Open
Abstract
Solvatochromic dyes have emerged as a new class of fluorescent probes in the field of lipid membranes due to their ability to identify the lipid organization of biomembranes in live cells by changing the color of their fluorescence. This type of solvatochromic function is useful for studying the heterogeneous features of biomembranes caused by the uneven distribution of lipids and cholesterols in live cells and related cellular processes. Therefore, a variety of advanced solvatochromic dyes have been rapidly developed over the last decade. To provide an overview of the works recently developed solvatochromic dyes have enabled, we herein present some solvatochromic dyes, with a particular focus on those based on pyrene and Nile red. As these dyes exhibit preferable photophysical properties in terms of fluorescence microscopy applications and unique distribution/localization in cellular compartments, some have already found applications in cell biological and biophysical studies. The goal of this review is to provide information to researchers who have never used solvatochromic dyes or who have not discovered applications of such dyes in biological studies.
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Affiliation(s)
- Yosuke Niko
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, 2-5-1, Akebono-cho, Kochi-shi, Kochi, 780-8520, Japan
| | - Andrey S Klymchenko
- Laboratoire de Bioimagerie et Pathologies, UMR 7021 CNRS, Université de Strasbourg, 74 route du Rhin, 67401, Illkirch, France
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17
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Ashokkumar P, Collot M, Klymchenko AS. Fluorogenic Squaraine Dendrimers for Background-Free Imaging of Integrin Receptors in Cancer Cells. Chemistry 2021; 27:6795-6803. [PMID: 33567148 DOI: 10.1002/chem.202100480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Indexed: 11/06/2022]
Abstract
To overcome the limited brightness of existing fluorogenic molecular probes for biomolecular targets, we introduce a concept of fluorogenic dendrimer probe, which undergoes polarity-dependent switching due to intramolecular aggregation-caused quenching of its fluorophores. Based on a rational design of dendrimers with four and eight squaraine dyes, we found that octamer bearing dyes through a sufficiently long PEG(8) linker displays >400-fold fluorescence enhancement from water to non-polar dioxane. High extinction coefficient (≈2,300,000 m-1 cm-1 ) resulted from eight squaraine dyes and quantum yield (≈25 %) make this octamer the brightest environment-sensitive fluorogenic molecule reported to date. Its conjugate with cyclic RGD used at low concentration (3 nm) enables integrin-specific fluorescence imaging of cancer cells with high signal-to-background ratio. The developed dendrimer probe is a "golden middle" between molecular probes and nanoparticles, combining small size, turn-on response and high brightness, important for bioimaging.
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Affiliation(s)
- Pichandi Ashokkumar
- Laboratoire de Biophotonique et Pharmacologie, CNRS UMR 7213, Faculté de Pharmacie, Université de Strasbourg, 74, Route du Rhin, 67401, Illkirch, France.,Department of Bioelectronics and Biosensors, Alagappa University, Karaikudi, 630 004, Tamil Nadu, India
| | - Mayeul Collot
- Laboratoire de Biophotonique et Pharmacologie, CNRS UMR 7213, Faculté de Pharmacie, Université de Strasbourg, 74, Route du Rhin, 67401, Illkirch, France
| | - Andrey S Klymchenko
- Laboratoire de Biophotonique et Pharmacologie, CNRS UMR 7213, Faculté de Pharmacie, Université de Strasbourg, 74, Route du Rhin, 67401, Illkirch, France
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18
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Johnee Britto N, Panneerselvam M, Deepan Kumar M, Kathiravan A, Jaccob M. Substituent Effect on the Photophysics and ESIPT Mechanism of N, N'-Bis(salicylidene)- p-phenylenediamine: A DFT/TD-DFT Analysis. J Chem Inf Model 2021; 61:1825-1839. [PMID: 33843222 DOI: 10.1021/acs.jcim.0c01430] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Excited-state intramolecular proton transfer (ESIPT) and intramolecular charge transfer (ICT) processes are widely exploited in the designing of organic materials for multifarious applications. This work explores the aftereffects of combining both ESIPT and ICT events in a single molecule, namely, N,N'-bis(salicylidene)-p-phenylenediamine (BSP) exploiting DFT and TD-DFT formalisms. The PBE0 functional employed in the present study is found to yield results with better accuracy for excited-state calculations. The results reveal that introduction of electron donor (-NH2) and electron acceptor (-NO2) substituents on BSP produces a strikingly red-shifted emission with respect to the corresponding emission from the unsubstituted analogue in polar solvents. This red-shifted emission originated due to the coupled effect of ESIPT and planar-ICT (PICT) processes from the coplanar geometry adopted by the substituted molecule (s-BSP). Based on the computed potential energy curves, the ground-state intramolecular proton transfer (GSIPT) was found to take place more favorably in s-BSP than in BSP under all solvent conditions. In the case of ESIPT, the barrier and relative energies of the phototautomers of s-BSP were slightly higher than BSP, which shows that simultaneous substitution of -NH2 and -NO2 groups causes slight perturbation to the ESIPT process. Overall, the computed results show that simultaneous substitution of suitable electron donor and acceptor substituents provides profitable changes in the photophysical properties of ESIPT molecules like BSP. These molecular-level insights will pave way for designing better materials for diverse applications.
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Affiliation(s)
- Neethinathan Johnee Britto
- Department of Chemistry & Computational Chemistry Laboratory, Loyola Institute of Frontier Energy (LIFE), Loyola College (Autonomous), University of Madras, Chennai 600 034, Tamil Nadu, India
| | - Murugesan Panneerselvam
- Department of Chemistry & Computational Chemistry Laboratory, Loyola Institute of Frontier Energy (LIFE), Loyola College (Autonomous), University of Madras, Chennai 600 034, Tamil Nadu, India
| | - Madhu Deepan Kumar
- Department of Chemistry & Computational Chemistry Laboratory, Loyola Institute of Frontier Energy (LIFE), Loyola College (Autonomous), University of Madras, Chennai 600 034, Tamil Nadu, India
| | - Arunkumar Kathiravan
- Department of Chemistry, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Avadi, Chennai 600 062, Tamil Nadu, India
| | - Madhavan Jaccob
- Department of Chemistry & Computational Chemistry Laboratory, Loyola Institute of Frontier Energy (LIFE), Loyola College (Autonomous), University of Madras, Chennai 600 034, Tamil Nadu, India
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19
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Polishchuk V, Kulinich A, Rusanov E, Shandura M. Highly Fluorescent Dianionic Polymethines with a 1,3,2-Dioxaborine Core. J Org Chem 2021; 86:5227-5233. [PMID: 33729780 DOI: 10.1021/acs.joc.1c00138] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The difluoroboron β-diketonate ring is ever more used for creating bright polymethine-type fluorophores for the visible and NIR range. Here, we report the synthesis and spectral properties of a series of dianionic cyanine dyes of the rare A1-π-A-π-A1 type, with the central dioxaborine ring (A) embedded into the polymethine chain and various electron-acceptor terminal groups A1. Depending on the nature of the end group, the maxima of their intensive (with molar extinctions up to 380 000 M-1 cm-1) and narrow long-wavelength absorption band lie in the range of 530-770 nm. Their absorption and fluorescence bands are nearly mirror-like and characterized by weak solvatochromism; the marked hypsochromic shifts are observed only when going from polar aprotic solvents to methanol. The designed dianionic dyes have fluorescence quantum yields up to 92 % in the visible range, and even for the NIR dyes, the values of 18-37 % are observed in DMF.
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Affiliation(s)
- Vladyslav Polishchuk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska Str., 02094 Kyiv, Ukraine
| | - Andrii Kulinich
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska Str., 02094 Kyiv, Ukraine
| | - Eduard Rusanov
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska Str., 02094 Kyiv, Ukraine
| | - Mykola Shandura
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska Str., 02094 Kyiv, Ukraine
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20
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Ma C, Sun W, Xu L, Qian Y, Dai J, Zhong G, Hou Y, Liu J, Shen B. A minireview of viscosity-sensitive fluorescent probes: design and biological applications. J Mater Chem B 2021; 8:9642-9651. [PMID: 32986068 DOI: 10.1039/d0tb01146k] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Microenvironment-related parameters like viscosity, polarity, and pH play important roles in controlling the physical or chemical behaviors of local molecules, which determine the physical or chemical behaviors of surrounding molecules. In general, changes of the internal microenvironment will usually lead to cellular malfunction or the occurrence of relevant diseases. In the last few decades, the field of chemicobiology has received great attention. Also, remarkable progress has been made in developing viscosity-sensitive fluorescent probes. These probes were particularly efficient for imaging viscosity in biomembranes as well as lighting up specific organelles, such as mitochondria and lysosome. Besides, there are some fluorescent probes that can be used to quantify intracellular viscosity when combined with fluorescence lifetime (FLIM) and ratiometric imaging under water-free conditions. In this review, we summarized the majority of viscosity-sensitive chemosensors that have been reported thus far.
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Affiliation(s)
- Chenggong Ma
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Wen Sun
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Limin Xu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Ying Qian
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Jianan Dai
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Guoyan Zhong
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Yadan Hou
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Jialong Liu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Baoxing Shen
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
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21
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Collot M. Recent advances in dioxaborine-based fluorescent materials for bioimaging applications. MATERIALS HORIZONS 2021; 8:501-514. [PMID: 34821266 DOI: 10.1039/d0mh01186j] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fluorescent materials are continuously contributing to important advances in the field of bioimaging. Among these materials, dioxaborine-based fluorescent materials (DBFM) are arousing growing interest. Due to their rigid structures conferred by a cyclic boron complex, DBFM possess appealing photophysical properties including high extinction coefficients and quantum yields as well as emission in the near infrared, enhanced photostability and high two-photon absorption. We herein discuss the recent advances of DBFM that found use in bioimaging applications. This review covers the development of fluorescent molecular probes for biomolecules (DNA, proteins), small molecules (cysteine, H2O2, oxygen), ions and the environment (polarity, viscosity) as well as polymers and nanomaterials used in bioimaging. This review aims at providing a comprehensive and critical insight on DBFM by highlighting the assets of these promising materials in bioimaging but also by pointing out their limitations that would require further developments.
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Affiliation(s)
- Mayeul Collot
- Laboratoire de Bioimagerie et Pathologies, UMR 7021, CNRS/Université de Strasbourg, 74 route du Rhin, 67401 Illkirch-Graffenstaden, France.
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22
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Pigot C, Noirbent G, Bui TT, Péralta S, Duval S, Gigmes D, Nechab M, Dumur F. Synthesis, and the optical and electrochemical properties of a series of push–pull dyes based on the 4-(9-ethyl-9 H-carbazol-3-yl)-4-phenylbuta-1,3-dienyl donor. NEW J CHEM 2021. [DOI: 10.1039/d1nj00275a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A series of twelve dyes based on the 4-(9-ethyl-9H-carbazol-3-yl)-4-phenylbuta-1,3-dienyl donor were prepared with electron acceptors varying in their structures but also in their electron-withdrawing ability.
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Affiliation(s)
- Corentin Pigot
- Aix Marseille Univ
- CNRS
- ICR UMR7273
- F-13397 Marseille
- France
| | | | | | | | - Sylvain Duval
- Université de Lille
- CNRS
- Centrale Lille
- ENSCL
- Univ. Artois
| | - Didier Gigmes
- Aix Marseille Univ
- CNRS
- ICR UMR7273
- F-13397 Marseille
- France
| | - Malek Nechab
- Aix Marseille Univ
- CNRS
- ICR UMR7273
- F-13397 Marseille
- France
| | - Frédéric Dumur
- Aix Marseille Univ
- CNRS
- ICR UMR7273
- F-13397 Marseille
- France
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23
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Belanger MC, Zhuang M, Ball AG, Richey KH, DeRosa CA, Fraser CL, Pompano RR. Labelling primary immune cells using bright blue fluorescent nanoparticles. Biomater Sci 2020; 8:1897-1909. [PMID: 32026891 DOI: 10.1039/c9bm01572h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tracking cell movements is an important aspect of many biological studies. Reagents for cell tracking must not alter the biological state of the cell and must be bright enough to be visualized above background autofluorescence, a particular concern when imaging in tissue. Currently there are few reagents compatible with standard UV excitation filter sets (e.g. DAPI) that fulfill those requirements, despite the development of many dyes optimized for violet excitation (405 nm). A family of boron-based fluorescent dyes, difluoroboron β-diketonates, has previously served as bio-imaging reagents with UV excitation, offering high quantum yields and wide excitation peaks. In this study, we investigated the use of one such dye as a potential cell tracking reagent. A library of difluoroboron dibenzoylmethane (BF2dbm) conjugates were synthesized with biocompatible polymers including: poly(l-lactic acid) (PLLA), poly(ε-caprolactone) (PCL), and block copolymers with poly(ethylene glycol) (PEG). Dye-polymer conjugates were fabricated into nanoparticles, which were stable for a week at 37 °C in water and cell culture media, but quickly aggregated in saline. Nanoparticles were used to label primary splenocytes; phagocytic cell types were more effectively labelled. Labelling with nanoparticles did not affect cellular viability, nor basic immune responses. Labelled cells were more easily distinguished when imaged on a live tissue background than those labelled with a commercially available UV-excitable cytoplasmic labelling reagent. The high efficiency in terms of both fluorescence and cellular labelling may allow these nanoparticles to act as a short-term cell labelling strategy while wide excitation peaks offer utility across imaging and analysis platforms.
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Affiliation(s)
- Maura C Belanger
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA. and Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, Virginia 22903, USA
| | - Meng Zhuang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA.
| | - Alexander G Ball
- Department of Microbiology Cancer Biology and Immunology, University of Virginia, Charlottesville, Virginia 22903, USA and Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, Virginia 22903, USA
| | - Kristen H Richey
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA.
| | - Christopher A DeRosa
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA.
| | - Cassandra L Fraser
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA.
| | - Rebecca R Pompano
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA. and Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, Virginia 22903, USA
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24
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Nirmalananthan-Budau N, Budau JH, Moldenhauer D, Hermann G, Kraus W, Hoffmann K, Paulus B, Resch-Genger U. Substitution pattern controlled aggregation-induced emission in donor-acceptor-donor dyes with one and two propeller-like triphenylamine donors. Phys Chem Chem Phys 2020; 22:14142-14154. [PMID: 32555804 DOI: 10.1039/d0cp00413h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We present a comparative study of the spectroscopic properties of the donor-acceptor-donor substituted dyes triphenylamine-allylidenemalononitrile-julolidine (TMJ) and triphenylamine-allylidenemalononitrile-triphenylamine (TMT), bearing one and two propeller-like triphenylamine donor moieties, in solvents of varying polarity and viscosity and in the aggregated and solid state. Our results reveal control of the aggregation-induced spectroscopic changes and the packing motifs of the dye molecules in the solid state by the chemical nature and structure of the second nitrogen-containing donor, i.e., a planar and a rigid julolidine or a twisted triphenyl group. Assuming that the TMT and TMJ aggregates show a comparable arrangement of the molecules to the respective crystals, these different molecular interactions in the solid state are responsible for aggregation induced emission (AIE) in the case of TMT and its absence for TMJ. Moreover, a versatile strategy for the fluorescence enhancement of only weakly emissive AIE dyes is shown, turning these dyes into bright nanoscale fluorescent reporters by using them as stains for preformed polymer particles.
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Affiliation(s)
- Nithiya Nirmalananthan-Budau
- Federal Institute for Material Research and Testing (BAM), Department 1, Division Biophotonics, Richard-Willstätter-Straße 11, D-12489 Berlin, Germany. and Freie Universität Berlin, Institut für Chemie und Biochemie, Takustraße 3, D-14195 Berlin, Germany
| | - Johannes Horst Budau
- Freie Universität Berlin, Institut für Chemie und Biochemie, Takustraße 3, D-14195 Berlin, Germany
| | - Daniel Moldenhauer
- Federal Institute for Material Research and Testing (BAM), Department 1, Division Biophotonics, Richard-Willstätter-Straße 11, D-12489 Berlin, Germany.
| | - Gunter Hermann
- QoD Technologies GmbH, Altensteinstraße 40, D-14195 Berlin, Germany
| | - Werner Kraus
- Federal Institute for Material Research and Testing (BAM), Department 1, Division Structure Analytics, Richard-Willstätter-Straße 11, D-12489 Berlin, Germany
| | - Katrin Hoffmann
- Federal Institute for Material Research and Testing (BAM), Department 1, Division Biophotonics, Richard-Willstätter-Straße 11, D-12489 Berlin, Germany.
| | - Beate Paulus
- Freie Universität Berlin, Institut für Chemie und Biochemie, Takustraße 3, D-14195 Berlin, Germany
| | - Ute Resch-Genger
- Federal Institute for Material Research and Testing (BAM), Department 1, Division Biophotonics, Richard-Willstätter-Straße 11, D-12489 Berlin, Germany.
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25
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Ashoka AH, Ashokkumar P, Kovtun YP, Klymchenko AS. Solvatochromic Near-Infrared Probe for Polarity Mapping of Biomembranes and Lipid Droplets in Cells under Stress. J Phys Chem Lett 2019; 10:2414-2421. [PMID: 31021640 DOI: 10.1021/acs.jpclett.9b00668] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Can polarity-sensitive fluorescent dyes monitor the response of live cells to fundamental stress conditions, such as deprivation from nutrition and oxidative stress? To address this question, we developed a push-pull dioxaborine probe (DXB-NIR) for biomembranes and lipid droplets featuring strong solvatochromism in the far-red to near-infrared region, high fluorescence brightness, photostability, and two-photon absorption cross section, reaching 13800 GM at 930 nm. In model membranes, DXB-NIR exhibits unprecedented 80 nm shift between liquid ordered and disordered membrane phases, allowing robust imaging of separated membrane microdomains. Two-color imaging of live cells with DXB-NIR enables polarity mapping in plasma membranes, endoplasmic reticulum, and lipid droplets, which reveals that starvation and oxidative stress produce an increase in the local polarity, and this change is different for each of the studied cell compartments. Thus, by pushing the limits of existing solvatochromic dyes, we introduce a concept of polarity mapping for monitoring the response of cells to stress.
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Affiliation(s)
- Anila Hoskere Ashoka
- Laboratoire de Bioimagerie et Pathologies , UMR 7021 CNRS, Faculté de Pharmacie, Université de Strasbourg , Strasbourg , CS 60024 , France
| | - Pichandi Ashokkumar
- Laboratoire de Bioimagerie et Pathologies , UMR 7021 CNRS, Faculté de Pharmacie, Université de Strasbourg , Strasbourg , CS 60024 , 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 Bioimagerie et Pathologies , UMR 7021 CNRS, Faculté de Pharmacie, Université de Strasbourg , Strasbourg , CS 60024 , France
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26
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27
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Wang X, Anton N, Ashokkumar P, Anton H, Fam TK, Vandamme T, Klymchenko AS, Collot M. Optimizing the Fluorescence Properties of Nanoemulsions for Single Particle Tracking in Live Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:13079-13090. [PMID: 30844230 DOI: 10.1021/acsami.8b22297] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nanoemulsions (NEs) are biocompatible lipid nanoparticles composed of an oily core stabilized by a surfactant shell. It is acknowledged that the surface decoration with poly(ethylene glycol), through the use of nonionic surfactants, confers high stealth in biological medium with reduced nonspecific interactions. Tracking individual NE by fluorescence microscopy techniques would lead to a better understanding of their behavior in cells and thus require the development of bright single particles with enhanced photostability. However, the understanding of the relationship between the physicochemical properties and chemical composition of the NEs, on the one hand, and its fluorescence properties of encapsulated dyes, on the other hand, remains limited. Herein, we synthesized three new dioxaborine barbituryl styryl (DBS) dyes that displayed high molar extinction coefficients (up to 120 000 M-1 cm-1) with relatively low quantum yields in solvents and impressive fluorescence enhancement when dissolved in viscous oils (up to 0.98). The reported screening of nine different oils allowed disclosing a range of efficient "oil/dye" couples and understanding the main parameters that lead to the brightest NEs. We determine vitamin E acetate/DBS-C8 as the representative most efficient couple, combining high dye loading capabilities and low aggregation-induced quenching, leading to <50 nm ultrabright NEs (with brightness as high as 30 × 106 M-1 cm-1) with negligible dye leakage in biological media. Beyond a comprehensive optical and physicochemical characterization of fluorescent NEs, cellular two-photon excitation imaging was performed with polymer-coated cell penetrating NEs. Thanks to their impressive brightness and photostability, NEs displaying different charge surfaces were microinjected in HeLa cells and were individually tracked in the cytosol to study their relative velocity.
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Affiliation(s)
- Xinyue Wang
- Université de Strasbourg, CNRS, CAMB UMR 7199 , F-67000 Strasbourg , France
| | - Nicolas Anton
- Université de Strasbourg, CNRS, CAMB UMR 7199 , F-67000 Strasbourg , France
| | - Pichandi Ashokkumar
- Laboratory of Biophotonic and Pathologies , CNRS UMR 7021, Université de Strasbourg , Faculté de Pharmacie, 74, Route du Rhin , 67401 Illkirch , France
| | - Halina Anton
- Laboratory of Biophotonic and Pathologies , CNRS UMR 7021, Université de Strasbourg , Faculté de Pharmacie, 74, Route du Rhin , 67401 Illkirch , France
| | - Tkhe Kyong Fam
- Laboratory of Biophotonic and Pathologies , CNRS UMR 7021, Université de Strasbourg , Faculté de Pharmacie, 74, Route du Rhin , 67401 Illkirch , France
| | - Thierry Vandamme
- Université de Strasbourg, CNRS, CAMB UMR 7199 , F-67000 Strasbourg , France
| | - Andrey S Klymchenko
- Laboratory of Biophotonic and Pathologies , CNRS UMR 7021, Université de Strasbourg , Faculté de Pharmacie, 74, Route du Rhin , 67401 Illkirch , France
| | - Mayeul Collot
- Laboratory of Biophotonic and Pathologies , CNRS UMR 7021, Université de Strasbourg , Faculté de Pharmacie, 74, Route du Rhin , 67401 Illkirch , France
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28
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Organoboron Schiff bases as cell-staining fluorescent probes: Synthesis, Chemio-photophysical characterization, DFT, and X-ray structures. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4718] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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29
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Ashokkumar P, Ashoka AH, Collot M, Das A, Klymchenko AS. A fluorogenic BODIPY molecular rotor as an apoptosis marker. Chem Commun (Camb) 2019; 55:6902-6905. [DOI: 10.1039/c9cc03242h] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Based on a BODIPY molecular rotor, we designed a probe that lights up its green fluorescence in apoptotic cells and distinguishes between early and late apoptosis.
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Affiliation(s)
- Pichandi Ashokkumar
- Laboratoire de Bioimagerie et Pathologies
- UMR 7021 CNRS
- Faculté de Pharmacie
- Université de Strasbourg
- Strasbourg CS 60024
| | - Anila Hoskere Ashoka
- Laboratoire de Bioimagerie et Pathologies
- UMR 7021 CNRS
- Faculté de Pharmacie
- Université de Strasbourg
- Strasbourg CS 60024
| | - Mayeul Collot
- Laboratoire de Bioimagerie et Pathologies
- UMR 7021 CNRS
- Faculté de Pharmacie
- Université de Strasbourg
- Strasbourg CS 60024
| | - Amitava Das
- CSIR-Central Salt & Marine Chemicals Research Institute
- Bhavnagar 364002
- India
| | - Andrey S. Klymchenko
- Laboratoire de Bioimagerie et Pathologies
- UMR 7021 CNRS
- Faculté de Pharmacie
- Université de Strasbourg
- Strasbourg CS 60024
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30
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Zhuang M, Perkins A, DeRosa CA, Butler T, Demas JN, Fraser CL. Meta
-Dimethoxy-Substituted Difluoroboron Dibenzoylmethane Poly(Lactic Acid) Nanoparticles for Luminescence Anisotropy. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Meng Zhuang
- Department of Chemistry; University of Virginia; Charlottesville VA 22904 USA
| | - Anna Perkins
- Department of Chemistry; University of Virginia; Charlottesville VA 22904 USA
| | | | - Tristan Butler
- Department of Chemistry; University of Virginia; Charlottesville VA 22904 USA
| | - James N. Demas
- Department of Chemistry; University of Virginia; Charlottesville VA 22904 USA
| | - Cassandra L. Fraser
- Department of Chemistry; University of Virginia; Charlottesville VA 22904 USA
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31
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Centrosymmetric Binuclear Boron Compounds Derived from Dithiooxamides: Synthesis, Characterization, and Their Photophysical Properties. J CHEM-NY 2018. [DOI: 10.1155/2018/4295970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In this paper, we report the synthesis and characterization of new boron compounds derived from dithiooxamides. The compounds were characterized by NMR (1H and 13C), UV-vis, fluorescence spectroscopy, and high resolution mass spectrometry. The crystal structure of the mononuclear boron compound was determined by single-crystal X-ray diffraction analysis. The photophysical properties of the boron compounds were investigated, and we found moderate fluorescence emission (compound 2 ΦF: 4.07% and compound 4 ΦF: 2.89%). We also observed that the mononuclear complex presented greater stability. Compound 4 showed interesting luminescent properties; in solid state, it exhibited an increase in fluorescence by mechanostimuli by changing to a bright red color, and also in solution, it showed a decrease in fluorescence intensity when oxygen and air were supplied to the solution.
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32
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Kuramoto Y, Nakagiri T, Matsui Y, Ohta E, Ogaki T, Ikeda H. A leaning amine-ketone dyad with a nonconjugated linker: solvatofluorochromism and dual fluorescence associated with intramolecular charge transfer. Photochem Photobiol Sci 2018; 17:1157-1168. [PMID: 30063241 DOI: 10.1039/c7pp00453b] [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
Dyad 4, comprising a triphenylamine (TPA) electron donor and 1,4-pentadien-3-one (pentadienone) electron acceptor tethered by a nonconjugated linker, displays solvatofluorochromism (SFC) and dual fluorescence associated with intramolecular charge transfer (ICT) in the excited state. While the fluorescence arises from a locally excited state of 4 (LE-4*) in saturated hydrocarbon solvents, the fluorescence from the ICT state of 4 (ICT-4*) occurs in aprotic solvents. ICT-4* has a much greater dipole moment than its corresponding ground state. The results of theoretical calculations suggest that the conversion of LE-4* to ICT-4* involves a unique structural change like a leaning of the pentadienone moiety. Two factors are responsible for the significant SFC displayed by 4, the first being the high electron-donating and -accepting abilities of the respective locally excited TPA and pentadienone moieties in LE-4* and the other being a rigid ethano bridge that links the two moieties in ICT-4*. The former property facilitates photoinduced electron-transfer (PET) and the latter prevents full single electron transfer (SET) by prohibiting direct π-conjugation and the spatial approach of the two dyad components. Consequently, these electronic and geometrical features lead to SFC arising from a large dipole moment change caused by ICT and partial intramolecular SET.
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Affiliation(s)
- Yutaro Kuramoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
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33
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Lee SC, Heo J, Woo HC, Lee JA, Seo YH, Lee CL, Kim S, Kwon OP. Fluorescent Molecular Rotors for Viscosity Sensors. Chemistry 2018; 24:13706-13718. [DOI: 10.1002/chem.201801389] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/25/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Seung-Chul Lee
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| | - Jeongyun Heo
- Center for Theragnosis; Korea Institute of Science and Technology (KIST); 39-1 Hawolgok-dong Seongbuk-gu Seoul 136-791 Korea
| | - Hee Chul Woo
- Advanced Photonics Research Institute (APRI); Gwangju Institute of Science and Technology (GIST); Gwangju 61005 Republic of Korea
| | - Ji-Ah Lee
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| | - Young Hun Seo
- Center for Theragnosis; Korea Institute of Science and Technology (KIST); 39-1 Hawolgok-dong Seongbuk-gu Seoul 136-791 Korea
| | - Chang-Lyoul Lee
- Advanced Photonics Research Institute (APRI); Gwangju Institute of Science and Technology (GIST); Gwangju 61005 Republic of Korea
| | - Sehoon Kim
- Center for Theragnosis; Korea Institute of Science and Technology (KIST); 39-1 Hawolgok-dong Seongbuk-gu Seoul 136-791 Korea
- Division of Bio-Medical Science & Technology; KIST School; Korea University of Science and Technology (UST); Seoul 02792 Korea
- KU-KIST Graduate School of Converging Science and Technology; Korea University; 145 Anam-ro Seongbuk-gu Seoul 02841 Korea
| | - O-Pil Kwon
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
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34
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Viscosity sensitive fluorescent coumarin-carbazole chalcones and their BF2 complexes containing carboxylic acid – Synthesis and solvatochromism. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.05.074] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Raghunathan K, Kenworthy AK. Dynamic pattern generation in cell membranes: Current insights into membrane organization. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1860:2018-2031. [PMID: 29752898 DOI: 10.1016/j.bbamem.2018.05.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 04/30/2018] [Accepted: 05/03/2018] [Indexed: 12/18/2022]
Abstract
It has been two decades since the lipid raft hypothesis was first presented. Even today, whether these nanoscale cholesterol-rich domains are present in cell membranes is not completely resolved. However, especially in the last few years, a rich body of literature has demonstrated both the presence and the importance of non-random distribution of biomolecules on the membrane, which is the focus of this review. These new developments have pushed the experimental limits of detection and have brought us closer to observing lipid domains in the plasma membrane of live cells. Characterization of biomolecules associated with lipid rafts has revealed a deep connection between biological regulation and function and membrane compositional heterogeneities. Finally, tantalizing new developments in the field have demonstrated that lipid domains might not just be associated with the plasma membrane of eukaryotes but could potentially be a ubiquitous membrane-organizing principle in several other biological systems. This article is part of a Special Issue entitled: Emergence of Complex Behavior in Biomembranes edited by Marjorie Longo.
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Affiliation(s)
- Krishnan Raghunathan
- Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, PA 15224, USA.
| | - Anne K Kenworthy
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37232, USA.
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36
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Collot M, Fam TK, Ashokkumar P, Faklaris O, Galli T, Danglot L, Klymchenko AS. Ultrabright and Fluorogenic Probes for Multicolor Imaging and Tracking of Lipid Droplets in Cells and Tissues. J Am Chem Soc 2018; 140:5401-5411. [PMID: 29446627 DOI: 10.1021/jacs.7b12817] [Citation(s) in RCA: 190] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Lipid droplets (LDs) are intracellular lipid-rich organelles that regulate the storage of neutral lipids and were recently found to be involved in many physiological processes, metabolic disorders, and diseases including obesity, diabetes, and cancers. Herein we present a family of new fluorogenic merocyanine fluorophores based on an indolenine moiety and a dioxaborine barbiturate derivative. These so-called StatoMerocyanines (SMCy) fluoresce from yellow to the near-infrared (NIR) in oil with an impressive fluorescence enhancement compared to aqueous media. Additionally, SMCy display remarkably high molar extinction coefficients (up to 390 000 M-1 cm-1) and high quantum yield values (up to 100%). All the members of this new family specifically stain the LDs in live cells with very low background noise. Unlike Nile Red, a well-known lipid droplet marker, SMCy dyes possess narrow absorption and emission bands in the visible, thus allowing multicolor imaging. SMCy proved to be compatible with fixation and led to high-quality 3D images of lipid droplets in cells and tissues. Their high brightness allowed efficient tissue imaging of adipocytes and circulating LDs. Moreover their remarkably high two-photon absorption cross-section, especially SMCy5.5 (up to 13 300 GM), as well as their capacity to efficiently fluoresce in the NIR region led to two-photon multicolor tissue imaging (liver). Taking advantage of the available color palette, lipid droplet exchange between cells was tracked and imaged, thus demonstrating intercellular communication.
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Affiliation(s)
- Mayeul Collot
- Laboratoire de Biophotonique et Pharmacologie, CNRS UMR 7213 , Université de Strasbourg, Faculté de Pharmacie , 74, Route du Rhin , 67401 Illkirch , France
| | - Tkhe Kyong Fam
- Laboratoire de Biophotonique et Pharmacologie, CNRS UMR 7213 , Université de Strasbourg, Faculté de Pharmacie , 74, Route du Rhin , 67401 Illkirch , France
| | - Pichandi Ashokkumar
- Laboratoire de Biophotonique et Pharmacologie, CNRS UMR 7213 , Université de Strasbourg, Faculté de Pharmacie , 74, Route du Rhin , 67401 Illkirch , France
| | - Orestis Faklaris
- ImagoSeine Core Facility, Institut Jacques Monod , Université Paris Diderot/CNRS, UMR 7593 , 15 Rue Hélène Brion , 75205 Paris CEDEX 13 , France
| | - Thierry Galli
- INSERM U894 , Centre de Psychiatrie et Neurosciences, "Membrane Traffic in Health and Diseased Brain" Team , 102-108 Rue de la Santé , 75014 Paris , France.,Université Paris Descartes , 75014 Paris , France
| | - Lydia Danglot
- INSERM U894 , Centre de Psychiatrie et Neurosciences, "Membrane Traffic in Health and Diseased Brain" Team , 102-108 Rue de la Santé , 75014 Paris , France.,Université Paris Descartes , 75014 Paris , France
| | - Andrey S Klymchenko
- Laboratoire de Biophotonique et Pharmacologie, CNRS UMR 7213 , Université de Strasbourg, Faculté de Pharmacie , 74, Route du Rhin , 67401 Illkirch , France
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37
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Marín ÁM, Telo JP, Collado D, Nájera F, Pérez-Inestrosa E, Pischel U. Bis(dioxaborine) Dyes with Variable π-Bridges: Towards Two-Photon Absorbing Fluorophores with Very High Brightness. Chemistry 2018; 24:2929-2935. [PMID: 29244219 DOI: 10.1002/chem.201704544] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Indexed: 01/01/2023]
Abstract
Bis(dioxaborine) dyes of the A-π-A format (A: acceptor, π: conjugated bridge) were prepared and photophysically characterized. The best performing dyes feature (a) visible-light absorption (>400 nm), (b) high molar absorption coefficients (up to 70000 m-1 cm-1 ), (c) Stokes shifts in the range of ca. 2500-5800 cm-1 , and (d) strong fluorescence emission with quantum yields of up to 0.74. This yields very bright-emitting dyes for one-photon excitation. However, the most intriguing feature of the dyes is their strong two-photon absorption. This was achieved by means of increased π-conjugation in the phenylene or phenylene-thiophene bridges through the variation of the conjugation length and rigidity. This provided two-photon absorption cross sections of up to 2800 GM (1 Goeppert-Mayer (GM)=10-50 cm4 s photon-1 ). Considering the mentioned high fluorescence quantum yields, exceptionally bright-emitting A-π-A two-photon absorbing dyes with low molecular mass are obtained. Time-dependent density-functional theory calculations corroborated the experimental results.
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Affiliation(s)
- Á Moneo Marín
- CIQSO-Center for Research in Sustainable Chemistry, Department of Chemistry, University of Huelva, Campus de El Carmen s/n, 21071, Huelva, Spain.,Centro de Química Estructural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
| | - João P Telo
- Centro de Química Estructural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
| | - Daniel Collado
- Department of Organic Chemistry, IBIMA, University of Málaga, Campus Teatinos s/n, 29071, Málaga, Spain.,Andalusian Center for Nanomedicine and Biotechnology-BIONAND, Parque Tecnológico de Andalucía, 29590, Málaga, Spain
| | - Francisco Nájera
- Department of Organic Chemistry, IBIMA, University of Málaga, Campus Teatinos s/n, 29071, Málaga, Spain.,Andalusian Center for Nanomedicine and Biotechnology-BIONAND, Parque Tecnológico de Andalucía, 29590, Málaga, Spain
| | - Ezequiel Pérez-Inestrosa
- Department of Organic Chemistry, IBIMA, University of Málaga, Campus Teatinos s/n, 29071, Málaga, Spain.,Andalusian Center for Nanomedicine and Biotechnology-BIONAND, Parque Tecnológico de Andalucía, 29590, Málaga, Spain
| | - Uwe Pischel
- CIQSO-Center for Research in Sustainable Chemistry, Department of Chemistry, University of Huelva, Campus de El Carmen s/n, 21071, Huelva, Spain
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38
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Polishchuk V, Stanko M, Kulinich A, Shandura M. D-π-A-π-D Dyes with a 1,3,2-Dioxaborine Cycle in the Polymethine Chain: Efficient Long-Wavelength Fluorophores. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701466] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Vladyslav Polishchuk
- Institute of Organic Chemistry; National Academy of Sciences of Ukraine; 5 Murmanska Str. 02094 Kyiv Ukraine
| | - Mariia Stanko
- Institute of Organic Chemistry; National Academy of Sciences of Ukraine; 5 Murmanska Str. 02094 Kyiv Ukraine
| | - Andrii Kulinich
- Institute of Organic Chemistry; National Academy of Sciences of Ukraine; 5 Murmanska Str. 02094 Kyiv Ukraine
| | - Mykola Shandura
- Institute of Organic Chemistry; National Academy of Sciences of Ukraine; 5 Murmanska Str. 02094 Kyiv Ukraine
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39
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Lee SC, Lee CL, Heo J, Jeong CU, Lee GH, Kim S, Yoon W, Yun H, Park SO, Kwak SK, Park SH, Kwon OP. Molecular Viscosity Sensors with Two Rotators for Optimizing the Fluorescence Intensity-Contrast Trade-Off. Chemistry 2017; 24:2888-2897. [DOI: 10.1002/chem.201704036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Seung-Chul Lee
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| | - Chang-Lyoul Lee
- Advanced Photonics Research Institute (APRI); Gwangju Institute of Science and Technology (GIST); 123 Cheomdangwagi-ro, Buk-gu Gwangju 61005 Republic of Korea
| | - Jeongyun Heo
- Center for Theragnosis; Korea Institute of Science and Technology (KIST); 39-1 Hawolgok-dong, Seongbuk-gu Seoul 136-791 Republic of Korea
| | - Chan-Uk Jeong
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| | - Gyeong-Hui Lee
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| | - Sehoon Kim
- Center for Theragnosis; Korea Institute of Science and Technology (KIST); 39-1 Hawolgok-dong, Seongbuk-gu Seoul 136-791 Republic of Korea
| | - Woojin Yoon
- Department of Chemistry & Department of Energy Systems Research; Ajou University; Suwon 443-749 Republic of Korea
| | - Hoseop Yun
- Department of Chemistry & Department of Energy Systems Research; Ajou University; Suwon 443-749 Republic of Korea
| | - Sung O. Park
- School of Energy and Chemical Engineering; Ulsan National Institute of Science and Technology; 50 UNIST-gil Ulsan 44919 Republic of Korea
| | - Sang Kyu Kwak
- School of Energy and Chemical Engineering; Ulsan National Institute of Science and Technology; 50 UNIST-gil Ulsan 44919 Republic of Korea
| | - Sung-Ha Park
- Department of Applied Chemistry and Biological Engineering; Ajou University; Suwon 443-749 Republic of Korea
| | - O-Pil Kwon
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
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40
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Daly ML, Kerr C, DeRosa CA, Fraser CL. Meta-Alkoxy-Substituted Difluoroboron Dibenzoylmethane Complexes as Environment-Sensitive Materials. ACS APPLIED MATERIALS & INTERFACES 2017; 9:32008-32017. [PMID: 28876889 DOI: 10.1021/acsami.7b06910] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The optical properties of meta-alkoxy-substituted difluoroboron dibenzoylmethane dyes were investigated in solution and in the solid state. Meta-alkoxy substitution induced strong intramolecular charge transfer (ICT) from the oxygen-donating substituent to the halide and boron acceptors in the excited state, as compared to the π-π* transition that is observed with para-alkoxy substitution. The optical properties of para- and meta-substituted alkoxy boron dyes were evaluated by calculations, in dilute solution, and in solid-state films. When embedded in amorphous matrixes (e.g., PLA, PMMA, PS, cholesterol), all dyes showed fluorescence (F) and phosphorescence (P) emission. In this report, we show that meta-substitution resulted in enhanced solvatochromism and an increased phosphorescence-to-fluorescence ratio in solid-state films compared to analogous para-substituted samples. With enhanced phosphorescence intensity via the heavy-atom effect, iodo-substituted dyes were further studied in PLA-PEG nanoparticles. Oxygen calibrations revealed stronger phosphorescence and a greater oxygen-sensing range for the meta- versus para-alkoxy-substituted dyes, features that are important for oxygen-sensing materials design.
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Affiliation(s)
- Margaret L Daly
- Department of Chemistry, University of Virginia , Charlottesville, Virginia 22904, United States
| | - Caroline Kerr
- Department of Chemistry, University of Virginia , Charlottesville, Virginia 22904, United States
| | - Christopher A DeRosa
- Department of Chemistry, University of Virginia , Charlottesville, Virginia 22904, United States
| | - Cassandra L Fraser
- Department of Chemistry, University of Virginia , Charlottesville, Virginia 22904, United States
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41
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Fluorescent Polystyrene Films for the Detection of Volatile Organic Compounds Using the Twisted Intramolecular Charge Transfer Mechanism. Molecules 2017; 22:molecules22081306. [PMID: 28783083 PMCID: PMC6152380 DOI: 10.3390/molecules22081306] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 07/31/2017] [Accepted: 08/03/2017] [Indexed: 11/17/2022] Open
Abstract
Thin films of styrene copolymers containing fluorescent molecular rotors were demonstrated to be strongly sensitive to volatile organic compounds (VOCs). Styrene copolymers of 2-[4-vinyl(1,1′-biphenyl)-4′-yl]-cyanovinyljulolidine (JCBF) were prepared with different P(STY-co-JCBF)(m) compositions (m% = 0.10–1.00) and molecular weights of about 12,000 g/mol. Methanol solutions of JCBF were not emissive due to the formation of the typical twisted intramolecular charge transfer (TICT) state at low viscosity regime, which formation was effectively hampered by adding progressive amounts of glycerol. The sensing performances of the spin-coated copolymer films (thickness of about 4 µm) demonstrated significant vapochromism when exposed to VOCs characterized by high vapour pressure and favourable interaction with the polymer matrix such as tetrahydrofurane (THF), CHCl3 and CH2Cl2. The vapochromic response was also reversible and reproducible after successive exposure cycles, whereas the fluorescence variation scaled linearly with VOC concentration, thus suggesting future applications as VOC optical sensors.
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42
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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: 636] [Impact Index Per Article: 90.9] [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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43
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Ibarra-Rodrı́guez M, Muñoz-Flores BM, Dias HVR, Sánchez M, Gomez-Treviño A, Santillan R, Farfán N, Jiménez-Pérez VM. Fluorescent Molecular Rotors of Organoboron Compounds from Schiff Bases: Synthesis, Viscosity, Reversible Thermochromism, Cytotoxicity, and Bioimaging Cells. J Org Chem 2017; 82:2375-2385. [DOI: 10.1021/acs.joc.6b02802] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Marisol Ibarra-Rodrı́guez
- Facultad
de Ciencias Químicas, Ciudad Universitaria, Universidad Autónoma de Nuevo León, 66451 San Nicolás
de los Garza, Nuevo León Mexico
| | - Blanca M. Muñoz-Flores
- Facultad
de Ciencias Químicas, Ciudad Universitaria, Universidad Autónoma de Nuevo León, 66451 San Nicolás
de los Garza, Nuevo León Mexico
| | - H. V. Rasika Dias
- Department
of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Mario Sánchez
- Centro de Investigación en Materiales Avanzados, S.C., Alianza Norte 202, PIIT, Carretera Monterrey-Aeropuerto
Km 10, CP 66628, Apodaca, Nuevo León Mexico
| | - Alberto Gomez-Treviño
- Facultad
de Ciencias Químicas, Ciudad Universitaria, Universidad Autónoma de Nuevo León, 66451 San Nicolás
de los Garza, Nuevo León Mexico
| | - Rosa Santillan
- Departamento
de Química, Centro de Investigación y de Estudios Avanzados del IPN, A.P.
14-740, CP 07000 San Pedro Zacatenco, DF, Mexico
| | - Norberto Farfán
- Facultad
de Química, Departamento de Química Orgánica, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 Mexico City, Mexico
| | - Víctor M. Jiménez-Pérez
- Facultad
de Ciencias Químicas, Ciudad Universitaria, Universidad Autónoma de Nuevo León, 66451 San Nicolás
de los Garza, Nuevo León Mexico
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44
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Tanaka M, Muraoka S, Matsui Y, Ohta E, Sakai A, Ogaki T, Yoshimoto Y, Mizuno K, Ikeda H. Remarkable Solvatofluorochromism of a [2.2]Paracyclophane-Containing Organoboron Complex: A Large Stokes Shift Promoted by Excited State Intramolecular Charge Transfer. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201600028] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mirai Tanaka
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Shunsuke Muraoka
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Yasunori Matsui
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
- The Research Institute for Molecular Electronic Devices (RIMED); Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Eisuke Ohta
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
- The Research Institute for Molecular Electronic Devices (RIMED); Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Atsushi Sakai
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Takuya Ogaki
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
- The Research Institute for Molecular Electronic Devices (RIMED); Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Yuichi Yoshimoto
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Kazuhiko Mizuno
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Hiroshi Ikeda
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
- The Research Institute for Molecular Electronic Devices (RIMED); Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
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45
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Sasaki S, Konishi GI. Thermo-responsive fluorescence of AIE-active poly(N-isopropylacrylamides) labeled with highly twisted bis(N,N-dialkylamino)arenes. RSC Adv 2017. [DOI: 10.1039/c7ra01212h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
A thermo-responsive fluorescent polymer materials were synthesized fromN-isopropylacrylamides with AIE-active 9,10-bis(N,N-dialkylamino)arene monomers.
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Affiliation(s)
- Shunsuke Sasaki
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Tokyo
- Japan
| | - Gen-ichi Konishi
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Tokyo
- Japan
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46
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Su D, Teoh CL, Wang L, Liu X, Chang YT. Motion-induced change in emission (MICE) for developing fluorescent probes. Chem Soc Rev 2017; 46:4833-4844. [DOI: 10.1039/c7cs00018a] [Citation(s) in RCA: 131] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A new concept of motion-induced change in emission (MICE) in a single molecule for developing fluorescent probes is presented and summarized.
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Affiliation(s)
- Dongdong Su
- Laboratory of Bioimaging Probe Development
- Singapore Bioimaging Consortium
- Agency for Science
- Technology and Research (A*STAR)
- 138667 Singapore
| | - Chai Lean Teoh
- Laboratory of Bioimaging Probe Development
- Singapore Bioimaging Consortium
- Agency for Science
- Technology and Research (A*STAR)
- 138667 Singapore
| | - Lu Wang
- Laboratory of Bioimaging Probe Development
- Singapore Bioimaging Consortium
- Agency for Science
- Technology and Research (A*STAR)
- 138667 Singapore
| | - Xiaogang Liu
- Singapore University of Technology and Design
- 487372 Singapore
| | - Young-Tae Chang
- Laboratory of Bioimaging Probe Development
- Singapore Bioimaging Consortium
- Agency for Science
- Technology and Research (A*STAR)
- 138667 Singapore
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47
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Multi-dimensional super-resolution imaging enables surface hydrophobicity mapping. Nat Commun 2016; 7:13544. [PMID: 27929085 PMCID: PMC5155161 DOI: 10.1038/ncomms13544] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 10/13/2016] [Indexed: 12/20/2022] Open
Abstract
Super-resolution microscopy allows biological systems to be studied at the nanoscale, but has been restricted to providing only positional information. Here, we show that it is possible to perform multi-dimensional super-resolution imaging to determine both the position and the environmental properties of single-molecule fluorescent emitters. The method presented here exploits the solvatochromic and fluorogenic properties of nile red to extract both the emission spectrum and the position of each dye molecule simultaneously enabling mapping of the hydrophobicity of biological structures. We validated this by studying synthetic lipid vesicles of known composition. We then applied both to super-resolve the hydrophobicity of amyloid aggregates implicated in neurodegenerative diseases, and the hydrophobic changes in mammalian cell membranes. Our technique is easily implemented by inserting a transmission diffraction grating into the optical path of a localization-based super-resolution microscope, enabling all the information to be extracted simultaneously from a single image plane.
Many super-resolution imaging techniques use fluorescence emission intensity to obtain precise positional information, but other spectral information is ignored. Here, the authors develop a method that records the spectrum and position of single dye molecules to map the hydrophobicity of a surface.
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48
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DeRosa CA, Seaman SA, Mathew AS, Gorick CM, Fan Z, Demas JN, Peirce SM, Fraser CL. Oxygen Sensing Difluoroboron β-Diketonate Polylactide Materials with Tunable Dynamic Ranges for Wound Imaging. ACS Sens 2016; 1:1366-1373. [PMID: 28042606 DOI: 10.1021/acssensors.6b00533] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Difluoroboron β-diketonate poly(lactic acid) materials exhibit both fluorescence (F) and oxygen sensitive room-temperature phosphorescence (RTP). Introduction of halide heavy atoms (Br and I) is an effective strategy to control the oxygen sensitivity in these materials. A series of naphthyl-phenyl (nbm) dye derivatives with hydrogen, bromide and iodide substituents were prepared for comparison. As nanoparticles, the hydrogen derivative was hypersensitive to oxygen (0-0.3%), while the bromide analogue was suited for hypoxia detection (0-3% O2). The iodo derivative, BF2nbm(I)PLA, showed excellent F to RTP peak separation and an 0-100% oxygen sensitivity range unprecedented for metal-free RTP emitting materials. Due to the dual emission and unconventionally long RTP lifetimes of these O2 sensing materials, a portable, cost-effective camera was used to quantify oxygen levels via lifetime and red/green/blue (RGB) ratiometry. The hypersensitive H dye was well matched to lifetime detection, simultaneous lifetime and ratiometric imaging was possible for the bromide analogue, whereas the iodide material, with intense RTP emission and a shorter lifetime, was suited for RGB ratiometry. To demonstrate the prospects of this camera/material design combination for bioimaging, iodide boron dye-PLA nanoparticles were applied to a murine wound model to detect oxygen levels. Surprisingly, wound oxygen imaging was achieved without covering (i.e. without isolating from ambient conditions, air). Additionally, would healing was monitored via wound size reduction and associated oxygen recovery, from hypoxic to normoxic. These single-component materials provide a simple tunable platform for biological oxygen sensing that can be deployed to spatially resolve oxygen in a variety of environments.
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Affiliation(s)
- Christopher A. DeRosa
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Scott A. Seaman
- Department
of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Alexander S. Mathew
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Catherine M. Gorick
- Department
of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Ziyi Fan
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - James N. Demas
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Shayn M. Peirce
- Department
of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Cassandra L. Fraser
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
- Department
of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
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49
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Daly ML, DeRosa CA, Kerr C, Morris WA, Fraser CL. Blue Thermally Activated Delayed Fluorescence from a Biphenyl Difluoroboron β-Diketonate. RSC Adv 2016; 6:81631-81635. [PMID: 28670446 PMCID: PMC5487001 DOI: 10.1039/c6ra18374c] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Optical properties of biphenyl difluoroboron β-diketonates were studied in poly(lactic acid) (PLA) blends. Increased conjugation lowered the emission energy, decreased the singlet-triplet energy gap and yielded blue thermally activated delayed fluorescence (TADF). The properties of these biphenyl dyes may inform organic light emitting diode (OLED) and bioimaging agent design.
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Affiliation(s)
- Margaret L. Daly
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA
| | - Christopher A. DeRosa
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA
| | - Caroline Kerr
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA
| | - William A. Morris
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA
| | - Cassandra L. Fraser
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA
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50
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Sasaki S, Suzuki S, Sameera WMC, Igawa K, Morokuma K, Konishi GI. Highly Twisted N,N-Dialkylamines as a Design Strategy to Tune Simple Aromatic Hydrocarbons as Steric Environment-Sensitive Fluorophores. J Am Chem Soc 2016; 138:8194-206. [DOI: 10.1021/jacs.6b03749] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Shunsuke Sasaki
- Department
of Organic and Polymeric Materials, Tokyo Institute of Technology, Tokyo 152-8552, Japan
| | - Satoshi Suzuki
- Fukui
Institute for Fundamental Chemistry, Kyoto University, Kyoto 606-8103, Japan
| | - W. M. C. Sameera
- Fukui
Institute for Fundamental Chemistry, Kyoto University, Kyoto 606-8103, Japan
| | - Kazunobu Igawa
- Institute
for Materials Chemistry and Engineering, Kyushu University, Fukuoka 816-8580, Japan
| | - Keiji Morokuma
- Fukui
Institute for Fundamental Chemistry, Kyoto University, Kyoto 606-8103, Japan
| | - Gen-ichi Konishi
- Department
of Organic and Polymeric Materials, Tokyo Institute of Technology, Tokyo 152-8552, Japan
- PRESTO, Japan Science and Technology Agency (JST), Tokyo 102-0076, Japan
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