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Cheng W, Kim S, Zivkovic S, Chung H, Ren Y, Guan J. Specific labelling of phagosome-derived vesicles in macrophages with a membrane dye delivered with microfabricated microparticles. Acta Biomater 2022; 141:344-353. [PMID: 35063705 PMCID: PMC8898297 DOI: 10.1016/j.actbio.2022.01.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 12/21/2021] [Accepted: 01/14/2022] [Indexed: 11/30/2022]
Abstract
Phagocytosis performed by a macrophage involves complex membrane trafficking and reorganization among various membranous cellular structures including phagosomes and vesicles derived from the phagosomes known as phagosome-derived vesicles. The present work reports on development of a technique that allows to specifically label the phagosome-derived vesicles in macrophages with a membrane dye. The technique is based on the use of microfabricated microparticles that are made of a thermosensitive nonbiodegradable polymer poly(N-isopropylacrylamide) (PNIPAM) or its derivative and contain a membrane dye 1,1'-dialkyl-3,3,3',3'-tetramethylindodicarbocyanine (DiI). The microparticles can be phagocytosed by RAW264.7 macrophages into their phagosomes, resulting in formation of intracellular DiI-positive vesicles derived from the phagosomes. The DiI-positive vesicles are motile and acidic; can be stained by fluorescently labelled dextran added in the culture medium; and can accumulate around new phagosomes, indicating that they possess properties of lysosomes. This technique is also applicable to another membrane dye 3,3'-dioctadecyloxacarbocyanine (DiO) and holds great potential to be useful for advancing our understanding of phagocytosis. STATEMENT OF SIGNIFICANCE: Phagocytosis performed by macrophages is a cellular process of great importance to various applications of biomaterials such as drug delivery and medical implantation. This work reports on a technique for characterizing phagocytosis based on the use of poly(N-isopropylacrylamide), which is a major biomaterial with numerous applications. This technique is the first of its kind and has generated an original finding about phagocytosis. In addition to drug delivery and medical implantation, phagocytosis plays critical roles in diseases, injuries and vaccination. This work could thus attract immediate and widespread interests in the field of biomaterials science and engineering.
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Affiliation(s)
- Wenhao Cheng
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, 2525 Pottsdamer Street, Tallahassee, FL 32310-2870, USA
| | - Sundol Kim
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, 2525 Pottsdamer Street, Tallahassee, FL 32310-2870, USA
| | - Sandra Zivkovic
- College of Medicine, Florida State University, Tallahassee, FL 32306-4370, USA
| | - Hoyong Chung
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, 2525 Pottsdamer Street, Tallahassee, FL 32310-2870, USA
| | - Yi Ren
- College of Medicine, Florida State University, Tallahassee, FL 32306-4370, USA
| | - Jingjiao Guan
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, 2525 Pottsdamer Street, Tallahassee, FL 32310-2870, USA.
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2
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Alia JD, Flack JA. Unspecified verticality of Franck–Condon transitions, absorption and emission spectra of cyanine dyes, and a classically inspired approximation. RSC Adv 2020; 10:43153-43167. [PMID: 35514896 PMCID: PMC9058138 DOI: 10.1039/d0ra06774a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 11/18/2020] [Indexed: 12/19/2022] Open
Abstract
The computed vertical energy, Ev,a/f, from the equilibrium geometry of the initial electronic state is frequently considered as representative of the experimental excitation/emission energy, Eabs/fl = hc/λmax. Application of the quantum mechanical version of the Franck–Condon principle does not involve precise specification of nuclear positions before, after, or during an electronic transition. Moreover, the duration of an electronic transition is not experimentally accessible in spectra with resolved vibrational structure. It is shown that computed vibronic spectra based on TDDFT methods and application of quantum mechanical FC analysis predict Eabs = hc/λmax with a 10-fold improvement in accuracy compared to Ev,a for nine cyanine dyes. It is argued that part of the reason for accuracy when this FC analysis is compared to experiment as opposed to Ev,a/f is the unspecified verticality of transitions in the context of the quantum version of the FC principle. Classical FC transitions that preserve nuclear kinetic energy before and after an electronic transition were previously found to occur at a weighted average of final and initial electronic state molecular geometries known as the r-centroid. Inspired by this approach a qualitative method using computed vertical and adiabatic energies and the harmonic approximation is developed and applied yielding a 5-fold improvement in accuracy compared to Ev,a. This improvement results from the dominance of low frequency vibronic transitions in the cyanine dye major band. The model gives insight into the nature of the redshift when qPCR dye EvaGreen is complexed to λDNA and is applicable to the low frequency band of similar non cyanine dyes such as curcumin. It is found that the computed vibronic cyanine dye spectra from time-dependent FC analysis at 0 K and 298 K show decreased intensity at higher temperature suggestive of increased intensity with restricted motion shown when cyanine dyes are used in biomedical imaging. A 2-layer ONIOM model of the DNA minor groove indicates restricted motion of the TC-1 dye excited state in this setting indicative of enhanced fluorescence. Insight into cyanine dye λmax from quantum and classical FC principle; high accuracy with classically inspired approach.![]()
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Affiliation(s)
- Joseph D. Alia
- Division of Science and Mathematics
- University of Minnesota Morris
- USA
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3
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Patlolla PR, Desai N, Gupta S, Datta B. Interaction of a dimeric carbocyanine dye aggregate with bovine serum albumin in non-aggregated and aggregated forms. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 209:256-263. [PMID: 30414574 DOI: 10.1016/j.saa.2018.10.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 10/23/2018] [Accepted: 10/28/2018] [Indexed: 06/09/2023]
Abstract
The interaction of fluorescent dyes with serum proteins has garnered significant interest owing to potential for non-covalent labeling and imaging applications. In this work, dimeric benzothiazole-based trimethine cyanine dyes are synthesized and their interaction with bovine serum albumin studied. The dimeric cyanine dyes mainly exist as H-dimers and H-aggregates in aqueous solution. A combination of absorbance, fluorescence, circular dichroism spectroscopy and atomic force and fluorescence microscopy indicate the formation of dye-BSA complexes. Binding of one of the dimeric dyes on BSA with a Ka of 1.49×105M-1 results in disruption of dye self-aggregates and unfolding of the dyes into the monomeric or open conformation. Fluorescence enhancement experienced by the dimeric dyes upon interaction with BSA is superior to that registered by Thioflavin T. Surfactant SDS has been used to further tune the self-aggregation of the dimeric dye resulting in a 200-fold fluorescence enhancement in presence of BSA. Interaction of a dimeric dye with BSA under conditions favoring protein aggregation is found to result in faster dye binding and the resulting fluorescence enhancement is easily visualized by fluorescence microscopy. The interaction of a dimeric cyanine dye aggregate with BSA is promising for non-covalent labeling applications in sharp contrast to the monomeric dye counterpart.
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Affiliation(s)
- Prathap Reddy Patlolla
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382355, India
| | - Nakshi Desai
- Department of Biological Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382355, India
| | - Sharad Gupta
- Department of Biological Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382355, India
| | - Bhaskar Datta
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382355, India; Department of Biological Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382355, India.
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4
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Patlolla PR, Das Mahapatra A, Mallajosyula SS, Datta B. Template-free H-dimer and H-aggregate formation by dimeric carbocyanine dyes. NEW J CHEM 2018. [DOI: 10.1039/c8nj00371h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dimeric cyanine dyes self-assemble into H-dimers and H-aggregates, which experience de-aggregation with specific biomolecules.
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Affiliation(s)
- Prathap Reddy Patlolla
- Department of Chemistry
- Indian Institute of Technology Gandhinagar
- Palaj
- Gandhinagar 382355
- India
| | - Amarjyoti Das Mahapatra
- Department of Chemistry
- Indian Institute of Technology Gandhinagar
- Palaj
- Gandhinagar 382355
- India
| | - Sairam S. Mallajosyula
- Department of Chemistry
- Indian Institute of Technology Gandhinagar
- Palaj
- Gandhinagar 382355
- India
| | - Bhaskar Datta
- Department of Chemistry
- Indian Institute of Technology Gandhinagar
- Palaj
- Gandhinagar 382355
- India
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5
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Lapina VA, Pavich TA, Pershukevich PP, Trofimov AV, Trofimova NN, Tsaplev YB, Zak PP. Exploring the utility of coumarins-based luminescent spectra converters. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3731] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | | | - Aleksei V. Trofimov
- Emanuel Institute of Biochemical Physics; RAS; Moscow Russian Federation
- Moscow Institute of Physics and Technology; Dolgoprudny Moscow Region Russian Federation
| | | | - Yurii B. Tsaplev
- Emanuel Institute of Biochemical Physics; RAS; Moscow Russian Federation
- Semenov Institute of Chemical Physics; RAS; Moscow Russian Federation
| | - Pavel P. Zak
- Emanuel Institute of Biochemical Physics; RAS; Moscow Russian Federation
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6
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Stratz S, Eyer K, Kurth F, Dittrich PS. On-chip enzyme quantification of single Escherichia coli bacteria by immunoassay-based analysis. Anal Chem 2014; 86:12375-81. [PMID: 25409480 DOI: 10.1021/ac503766d] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Individual bacteria of an isogenic population can differ significantly in their phenotypic characteristics. This cellular heterogeneity is thought to increase the adaptivity to environmental changes on a population level. Analytical methods for single-bacteria analyses are essential to reveal the different factors that may contribute to this cellular heterogeneity, among them the stochastic gene expression, cell cycle stages and cell aging. Although promising concepts for the analysis of single mammalian cells based on microsystems technology were recently developed, platforms suitable for proteomic analyses of microbial cells are by far more challenging. Here, we present a microfluidic device optimized for the analysis of single Escherichia coli bacteria. Individual bacteria are captured in a trap and isolated in a volume of only 155 pL. In combination with an immunoassay-based analysis of the cell lysate, the platform allowed the selective and sensitive analysis of intracellular enzymes. The limit of detection of the developed protocol was found to be 200 enzymes. Using this platform, we could investigate the levels of β-galactosidase in cells grown under different nutrient conditions. We successfully determined the enzyme copy numbers in cells cultured in defined medium (3517 ± 1578) and in complex medium (4710 ± 2643), and verified the down-regulation of expression in medium that contained only glucose as carbon source. The strong variations we found for individual bacteria confirm the phenotype heterogeneity. The capability to quantify proteins and other molecules in single bacterial lysates is encouraging to use the new analysis platform in future proteomics studies of isogenic bacteria populations.
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Affiliation(s)
- Simone Stratz
- Department of Chemistry and Applied Biosciences, ETH Zurich , CH-8093 Zürich, Switzerland
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7
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Time evolution of monomers and aggregates of a polymethine dye probe the dynamics of model vesicles and micelles. J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2014.02.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Dai ZF, Peng BX, Fan LZ, Li YF. Meso-Chloro-Substituted Indodicarbocyanines: Aggregate Behavior, Electrochemical Properties, Crystal Structure and Photographic Performance. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.199800097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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10
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Muddana HS, Gullapalli RR, Manias E, Butler PJ. Atomistic simulation of lipid and DiI dynamics in membrane bilayers under tension. Phys Chem Chem Phys 2010; 13:1368-78. [PMID: 21152516 DOI: 10.1039/c0cp00430h] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Membrane tension modulates cellular processes by initiating changes in the dynamics of its molecular constituents. To quantify the precise relationship between tension, structural properties of the membrane, and the dynamics of lipids and a lipophilic reporter dye, we performed atomistic molecular dynamics (MD) simulations of DiI-labeled dipalmitoylphosphatidylcholine (DPPC) lipid bilayers under physiological lateral tensions ranging from -2.6 mN m(-1) to 15.9 mN m(-1). Simulations showed that the bilayer thickness decreased linearly with tension consistent with volume-incompressibility, and this thinning was facilitated by a significant increase in acyl chain interdigitation at the bilayer midplane and spreading of the acyl chains. Tension caused a significant drop in the bilayer's peak electrostatic potential, which correlated with the strong reordering of water and lipid dipoles. For the low tension regime, the DPPC lateral diffusion coefficient increased with increasing tension in accordance with free-area theory. For larger tensions, free area theory broke down due to tension-induced changes in molecular shape and friction. Simulated DiI rotational and lateral diffusion coefficients were lower than those of DPPC but increased with tension in a manner similar to DPPC. Direct correlation of membrane order and viscosity near the DiI chromophore, which was just under the DPPC headgroup, indicated that measured DiI fluorescence lifetime, which is reported to decrease with decreasing lipid order, is likely to be a good reporter of tension-induced decreases in lipid headgroup viscosity. Together, these results offer new molecular-level insights into membrane tension-related mechanotransduction and into the utility of DiI in characterizing tension-induced changes in lipid packing.
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Affiliation(s)
- Hari S Muddana
- Department of Bioengineering, The Pennsylvania State University, 230 Hallowell Building, University Park, PA, USA
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11
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Shimomura M, Ando R, Kunitake T. Orientation and Spectral Characteristics of the Azobenzene Chromophore in the Ammonium Bilayer Assembly. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19830871211] [Citation(s) in RCA: 235] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Nishiyabu R, Aimé C, Gondo R, Noguchi T, Kimizuka N. Confining molecules within aqueous coordination nanoparticles by adaptive molecular self-assembly. Angew Chem Int Ed Engl 2010; 48:9465-8. [PMID: 19921730 DOI: 10.1002/anie.200904124] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ryuhei Nishiyabu
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), 744 Moto-oka Nishi-ku, Fukuoka 819-0395, Japan
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13
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Nishiyabu R, Aimé C, Gondo R, Noguchi T, Kimizuka N. Confining Molecules within Aqueous Coordination Nanoparticles by Adaptive Molecular Self-Assembly. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200904124] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Muddana HS, Morgan TT, Adair JH, Butler PJ. Photophysics of Cy3-encapsulated calcium phosphate nanoparticles. NANO LETTERS 2009; 9:1559-66. [PMID: 19260707 PMCID: PMC2712951 DOI: 10.1021/nl803658w] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Progress toward clinical application of biodegradable fluorescent calcium phosphate (CP) nanoparticles as a bioimaging agent requires detailed knowledge of chromophore interaction with CP. As readouts of this cargo-matrix interaction, we determined the principle photophysical properties of Cy3 encapsulated in CP nanparticles (CPNPs) using steady-state and time-resolved fluorescence spectroscopy. Fluorescence correlation spectroscopy (FCS)-determined diffusion coefficients and associated hydrodynamic radii confirmed the presence of highly monodisperse CPNPs with radii ranging from 7 to 10 nm. Single CP nanoparticles were 20 times brighter than free dye molecules because of a CP-induced 5-fold increase in quantum efficiency and encapsulation of four dye molecules per particle. Solvatochromic shifts resulting from hydrogen bonding between free dye and solvent or restricted intramolecular mobility by solvent viscosity were absent when Cy3 was encapsulated in CP. Encapsulation-mediated increases in radiative decay rates and decreases in nonradiative decay rates resulting in longer fluorescence lifetimes of Cy3 were attributed to solvent and CP-related local refractive indices and restricted flexibility of dye by rigid CP. Enhanced brightness of CPNPs enabled imaging of single nanoparticles under epifluorescence using both standard and total internal reflection fluorescence (TIRF) modes with camera exposure times on the order of tens of milliseconds. These enhanced photophysical properties together with excellent biocompatibility make CPNPs ideal for bioimaging applications ranging from single-molecule tracking to in vivo tumor detection and offer the possibility of timed codelivery of drugs to control cell function.
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Affiliation(s)
- Hari S. Muddana
- Department of Bioengineering, The Pennsylvania State University, 205 Hallowell Building, University Park, Pennsylvania 16802
| | - Thomas T. Morgan
- Department of Chemistry, The Pennsylvania State University, 249 Materials Research Laboratory, Hastings Road, University Park, Pennsylvania 16802
| | - James H. Adair
- Department of Materials Science and Engineering, The Pennsylvania State University, 249 Materials Research Laboratory, Hastings Road, University Park, Pennsylvania 16802
| | - Peter J. Butler
- Department of Bioengineering, The Pennsylvania State University, 205 Hallowell Building, University Park, Pennsylvania 16802
- mail correspondence to:
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15
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Benniston AC, Copley G. Lighting the way ahead with boron dipyrromethene (Bodipy) dyes. Phys Chem Chem Phys 2009; 11:4124-31. [DOI: 10.1039/b901383k] [Citation(s) in RCA: 279] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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16
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Yang Q, Xiang J, Li Q, Yan W, Zhou Q, Tang Y, Xu G. Chiral Transformation of Cyanine Dye Aggregates Induced by Small Peptides. J Phys Chem B 2008; 112:8783-7. [DOI: 10.1021/jp803076d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qianfan Yang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Molecular Sciences, State Key Laboratory for Structural Chemistry for Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Graduate University of Chinese Academy of Sciences, and Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Junfeng Xiang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Molecular Sciences, State Key Laboratory for Structural Chemistry for Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Graduate University of Chinese Academy of Sciences, and Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Qian Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Molecular Sciences, State Key Laboratory for Structural Chemistry for Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Graduate University of Chinese Academy of Sciences, and Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Wenpeng Yan
- Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Molecular Sciences, State Key Laboratory for Structural Chemistry for Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Graduate University of Chinese Academy of Sciences, and Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Qiuju Zhou
- Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Molecular Sciences, State Key Laboratory for Structural Chemistry for Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Graduate University of Chinese Academy of Sciences, and Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Yalin Tang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Molecular Sciences, State Key Laboratory for Structural Chemistry for Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Graduate University of Chinese Academy of Sciences, and Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Guangzhi Xu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Molecular Sciences, State Key Laboratory for Structural Chemistry for Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Graduate University of Chinese Academy of Sciences, and Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
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17
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Satake A, Tanihara J, Kobuke Y. Ligand-Induced Interconversion of a Coordination-Organized Porphyrin Dimer: a Potential Fluorescence-Based Molecular Memory Monitor. Inorg Chem 2007; 46:9700-7. [DOI: 10.1021/ic7010056] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Akiharu Satake
- Graduate School of Materials Science, Nara Institute of Science and Technology, Takayama 8916-5, Ikoma, Nara 630-0192, Japan
| | - Junichi Tanihara
- Graduate School of Materials Science, Nara Institute of Science and Technology, Takayama 8916-5, Ikoma, Nara 630-0192, Japan
| | - Yoshiaki Kobuke
- Graduate School of Materials Science, Nara Institute of Science and Technology, Takayama 8916-5, Ikoma, Nara 630-0192, Japan
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18
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Guillaume M, Liégeois V, Champagne B, Zutterman F. Time-dependent density functional theory investigation of the absorption and emission spectra of a cyanine dye. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.07.105] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Zhang Y, Du H, Tang Y, Xu G, Yan W. Spectroscopic investigation on the interaction of J-aggregate with human serum albumin. Biophys Chem 2007; 128:197-203. [PMID: 17482339 DOI: 10.1016/j.bpc.2007.04.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2007] [Revised: 04/12/2007] [Accepted: 04/14/2007] [Indexed: 11/27/2022]
Abstract
The interactions of three cyanine dyes, which exhibit different meso substituent in polymethine chain, with human serum albumin (HSA) have been investigated by the means of absorption, fluorescence and circular dichroism (CD) spectra. In phosphate buffer solution (PBS), the mentioned dyes exist not as isolated monomers but rather in the formation of J-aggregation. In the presence of HSA, the absorption and fluorescence emission spectra indicated that the J-aggregation was decomposed to monomer because of the strong affinity between dye molecules and HSA. Besides the association of cyanine dyes with HSA, binding to HSA gave rise to the J-aggregation CD signals. The meso substituent in the polymethine plays an important role in the interaction of HSA and the J-aggregation. Spectral studies showed that the dye bound with HSA in a 1:1 formation. The apparent constant (K(a)) value was roughly identified by analysis of the corresponding fluorescence data at various HSA concentrations. The higher affinity of the molecule with meso phenyl towards HSA with respect to molecules with meso ethyl or methyl can be attributed to the arrangement of molecules in J-aggregation and the hydrophobic force between the molecules and HSA.
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Affiliation(s)
- Yazhou Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
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20
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Takafuji M, Kira Y, Tsuji H, Sawada S, Hachisako H, Ihara H. Optically active polymer film tuned by a chirally self-assembled molecular organogel. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.02.036] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Görner H. Direct and Sensitized Photoprocesses of Bis-benzimidazole Dyes and the Effects of Surfactants and DNA¶. Photochem Photobiol 2007. [DOI: 10.1562/0031-8655(2001)0730339daspob2.0.co2] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Sagawa T, Chowdhury S, Takafuji M, Ihara H. Self-Assembled Nanofibrillar Aggregates with Amphiphilic and Lipophilic Molecules. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/masy.200650504] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Abd El-Aal RM, Younis M. Synthesis and antimicrobial activity of meso-substituted polymethine cyanine dyes. Bioorg Chem 2005; 32:193-210. [PMID: 15210335 DOI: 10.1016/j.bioorg.2004.04.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2003] [Indexed: 11/19/2022]
Abstract
The condensation reaction of equivalent amounts of 2-cyanomethyl benzooxazole or its derivatives with variously substituted aromatic aldehydes gave 2-cyano-styryl benzooxazole or its derivatives. The subsequent reaction of the 2-cyano-styryl benzooxazoles with 2(4)-methyl substituted heterocyclic quaternary salts afforded meso-substituted styryl-2(4)-polymethine cyanines. The condensation reaction of 2-cyanomethyl benzooxazole or its derivatives with alpha-nitroso-beta-naphthol followed by reaction with 2(4)-methyl substituted heterocyclic quaternary salts gave meso-substituted aza-2(4)-polymethine cyanines. The reaction of 2-cyanomethyl benzooxazole or its derivatives with N-methyl heterocyclic quaternary salts followed by the reaction with 2-methylquinolinium methiodide afforded the corresponding meso-substituted trimethine cyanine dyes. Elemental analyses, visible absorption, IR, (1)H NMR spectroscopy, and mass spectra established the structures of these compounds. The relationship between the structure and properties of these dyes has been studied and the solvatochromic behavior of some selected cyanine dyes in organic solvents is discussed. Finally, the antimicrobial activity of selected novel dyes was investigated in vitro using a wide spectrum of microbial strains.
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Affiliation(s)
- R M Abd El-Aal
- Chemistry Department, Aswan Faculty of Science, South Valley University, Egypt.
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Brichkin SB, Kurandina MA, Nikolaeva TM, Razumov VF. Spectral properties of carbocyanine dyes in solutions of reverse AOT micelles. HIGH ENERGY CHEMISTRY 2005. [DOI: 10.1007/s10733-005-0003-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Tatikolov AS, Costa SMB. Complexation of polymethine dyes with human serum albumin: a spectroscopic study. Biophys Chem 2004; 107:33-49. [PMID: 14871599 DOI: 10.1016/s0301-4622(03)00218-7] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2003] [Revised: 08/04/2003] [Accepted: 08/04/2003] [Indexed: 11/15/2022]
Abstract
Non-covalent interactions between polymethine dyes of various types (cationic and anionic thiacarbocyanines as well as anionic oxonols and tetracyanopolymethines) and human serum albumin (HSA) were studied by means of absorption, fluorescence and circular dichroism (CD) spectroscopies. Complexation with the protein leads to a red shift of the dye absorption spectra and, in most cases, to a growth of the fluorescence quantum yield (Phif; for oxonols this growth is very small). The binding constants (K) obtained from changing the absorption spectra and Phif vary from 10(4) to (5-6) x 10(7) M(-1). K for the anionic dyes is much higher than for the cationic dyes (the highest K was found for oxonols). Interaction of meso-substituted anionic thiacarbocyanines with HSA results in cis-->trans isomerization and, as a consequence, an appearance and a steep rise of dye fluorescence. Binding to HSA gives rise to dye CD signals and in many cases is accompanied by aggregation of the dyes. These aggregates often exhibit biphasic CD spectra. The aggregates formed by the dyes alone are decomposed in the presence of HSA.
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Affiliation(s)
- Alexander S Tatikolov
- Centro de Química Estrutural, Complexo 1, Instituto Superior Técnico, Av. Rovisco Pais, Lisboa 1049-001, Portugal.
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26
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Matsushima R, Nishimura N, Goto K, Kohno Y. Vapochromism of Ionic Dyes in Thin Films of Sugar Gels. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2003. [DOI: 10.1246/bcsj.76.1279] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Matsushima R, Nishimura N, Kohno Y. Vapochromic Properties of Nafion Film Doped with Cationic Dyes. CHEM LETT 2003. [DOI: 10.1246/cl.2003.260] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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28
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Matsushima R, Ogiue A, Kohno Y. Humidity-Sensitive Color Changes of Ionic Dyes in Solid Thin Film of Sugar Gel. CHEM LETT 2002. [DOI: 10.1246/cl.2002.436] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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29
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Tatikolov AS, Costa SMB. Photophysics and photochemistry of hydrophilic cyanine dyes in normal and reverse micelles. Photochem Photobiol Sci 2002; 1:211-8. [PMID: 12659519 DOI: 10.1039/b110450k] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photophysical and photochemical properties of the negatively charged hydrophilic cyanine dyes 1-3 were studied in isooctane/sodium bis(2-ethylhexyl) sulfosuccinate (AOT)/water and cyclohexane-hexanol/Triton X-100 (TX100)/water reverse micelles and in aqueous solutions in the presence of surfactants. In spite of the opposite total charges, 2 and its structural analog, cationic 3,3'-diethylthiacarbocyanine (DTC), show similar photophysical and photochemical behaviour in AOT reverse micelles. However, in normal micelles their photophysical properties are quite different: 2 exhibits unusual behaviour [a sharp increase in the fluorescence quantum yield (phif) in the presence of both cationic and anionic micelles, but very small changes with neutral TX100], whereas the behaviour of DTC is normal. The phif values of 1-3 in AOT reverse micelles suffer a steep drop when w0 increases from 0 to 10 (w0 = [H2O]/[AOT]) and remain essentially constant at higher w0, while in TX100 reverse micelles the phif values undergo small variations with w0. A decrease in the photoisomerization quantum yield, and a rise in phif in S1 --> T intersystem crossing, in the back isomerization activation energy and in the preexponential factor were found for 1-3 in AOT reverse micelles with small w0. The unusual behaviour of 1-3 in micelles is attributed to the bipolar structure of the dyes.
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Affiliation(s)
- Alexander S Tatikolov
- Centro de Química Estrutural, Complexo 1, Instituto Superior Técnico, 1049-001, Lisboa, Portugal.
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30
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Kimizuka N, Ohira H, Hattori K, Kunitake T. Morphological transcription of monolayer domains to aggregates: specific adsorption of cyanine dyes to pre-compressed chiral monolayers. Colloids Surf A Physicochem Eng Asp 2000. [DOI: 10.1016/s0927-7757(99)00552-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Chibisov AK, Prokhorenko VI, Görner H. Effects of surfactants on the aggregation behaviour of thiacarbocyanine dyes. Chem Phys 1999. [DOI: 10.1016/s0301-0104(99)00245-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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32
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Seifert JL, Connor RE, Kushon SA, Wang M, Armitage BA. Spontaneous Assembly of Helical Cyanine Dye Aggregates on DNA Nanotemplates. J Am Chem Soc 1999. [DOI: 10.1021/ja984279j] [Citation(s) in RCA: 221] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jennifer L. Seifert
- Contribution from the Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15206
| | - Rebecca E. Connor
- Contribution from the Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15206
| | - Stuart A. Kushon
- Contribution from the Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15206
| | - Miaomiao Wang
- Contribution from the Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15206
| | - Bruce A. Armitage
- Contribution from the Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15206
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34
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Spectroscopic studies of 5,5′-dimethoxy-3,3,′-disulfobutyl-9-ethylthiacarbocyanine (DDTC) in solutions and immobilized in sol-gel matrices. J Mol Struct 1998. [DOI: 10.1016/s0022-2860(98)00428-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Khimenko V, Chibisov AK, Görner H. Effects of Alkyl Substituents in the Polymethine Chain on the Photoprocesses in Thiacarbocyanine Dyes. J Phys Chem A 1997. [DOI: 10.1021/jp971472b] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vitalii Khimenko
- Center of Photochemistry, Russian Academy of Sciences, 117421 Moscow, Russia
| | | | - Helmut Görner
- Max-Planck-Institut für Strahlenchemie, D-45413 Mülheim an der Ruhr, Germany
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36
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Legendre BL, Moberg DL, Williams DC, Soper SA. Ultrasensitive near-infrared laser-induced fluorescence detection in capillary electrophoresis using a diode laser and avalanche photodiode. J Chromatogr A 1997; 779:185-94. [PMID: 9335121 DOI: 10.1016/s0021-9673(97)00405-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A sensitive fluorescence detector for capillary electrophoresis consisting of a semiconductor near-infrared diode laser and a single photon avalanche diode (SPAD) is described. The sensitivity of this system was demonstrated by the separation and analysis of four tricarbocyanine dyes using capillary electrophoresis and a running buffer consisting of 98% methanol and 2% water with 40 mM borate (pH 9.4). The LOD for the dye, IR-132, was found to be 4.41 zmol with the dynamic range found to be approximately four orders of magnitude in concentration. Based on the sampling volume of the system, the number of molecules actually detected at this LOD was approximately 27. To further demonstrate the utility of this diode-based detector, various amino acids were derivatized with a highly anionic near-IR labelling dye. The conjugates were separated in a running buffer comprised of predominately methanol and a cationic surfactant added to reverse the electroosmotic flow. The LOD values for various amino acids were found to be in the low zmol range.
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Affiliation(s)
- B L Legendre
- Department of Chemistry, Louisiana State University, Baton Rouge 70803-1804, USA
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37
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Redmond RW, Kochevar IE, Krieg M, Smith G, McGimpsey WG. Excited State Relaxation in Cyanine Dyes: A Remarkably Efficient Reverse Intersystem Crossing from Upper Triplet Levels. J Phys Chem A 1997. [DOI: 10.1021/jp963001f] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert W. Redmond
- Wellman Laboratories of Photomedicine, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts 02114, Pediatrics Department, MACC Fund Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, and Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609
| | - Irene E. Kochevar
- Wellman Laboratories of Photomedicine, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts 02114, Pediatrics Department, MACC Fund Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, and Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609
| | - Marianne Krieg
- Wellman Laboratories of Photomedicine, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts 02114, Pediatrics Department, MACC Fund Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, and Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609
| | - Glenn Smith
- Wellman Laboratories of Photomedicine, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts 02114, Pediatrics Department, MACC Fund Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, and Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609
| | - W. Grant McGimpsey
- Wellman Laboratories of Photomedicine, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts 02114, Pediatrics Department, MACC Fund Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, and Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609
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Chibisov AK, Zakharova GV, Görner H. Effects of substituents in the polymethine chain on the photoprocesses in indodicarbocyanine dyes. ACTA ACUST UNITED AC 1996. [DOI: 10.1039/ft9969204917] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Sugar-induced color and orientation changes in a cyanine dye bound to boronic -acid-appended poly(L-lysine). Tetrahedron Lett 1995. [DOI: 10.1016/0040-4039(94)02252-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Kimizuka N, Kawasaki T, Kunitake T. Thermal Stability and Specific Dye Binding of a Hydrogen-Bond-Mediated Bilayer Membrane. CHEM LETT 1994. [DOI: 10.1246/cl.1994.33] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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41
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Lakowicz JR, Szmacinski H, Nowaczyk K, Lederer WJ, Kirby MS, Johnson ML. Fluorescence lifetime imaging of intracellular calcium in COS cells using Quin-2. Cell Calcium 1994; 15:7-27. [PMID: 8149407 PMCID: PMC6906927 DOI: 10.1016/0143-4160(94)90100-7] [Citation(s) in RCA: 77] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We describe the first fluorescence lifetime images of cells. To demonstrate this new capability we measured intracellular images of Ca2+ in COS cells based on the Ca(2+)-dependent fluorescence lifetime of Quin-2. Apparent fluorescence lifetimes were measured by the phase-modulation method using a gain-modulated image intensifier and a slow-scan CCD camera. We describe methods to correct the images for photobleaching during acquisition of the data, and to correct for the position-dependent response of the image intensifier. The phase angle Quin-2 images were found to yield lower than expected Ca2+ concentrations, which appears to be the result of the formation of fluorescent photoproducts by Quin-2. Fluorescence lifetime imaging (FLIM) does not require wavelength-radiometric probes and appears to provide new opportunities for chemical imaging of cells.
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Affiliation(s)
- J R Lakowicz
- Department of Biological Chemistry, University of Maryland School of Medicine, Baltimore
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42
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Hamachi I, Fujimura H, Kunitake T. Energy Transfer from Zinc-Myoglobin to a Cyanine Dye Facilitated by Their Simultaneous Binding to a Phosphate Bilayer Membrane. CHEM LETT 1993. [DOI: 10.1246/cl.1993.1551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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43
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Ihara H, Shibata M, Hirayama C. Molecular Recognition Using Cyanine-α-Helical Poly(L-Lysine) Complexes in Methanol. CHEM LETT 1992. [DOI: 10.1246/cl.1992.1731] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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44
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Nakashima N, Nakamura C, Hiraishi T, Manabe O, Yoshizuka K. Crystallization of Two-Dimentional Chromophore Arrays in Aqueous Chiral Bilayer Membranes. CHEM LETT 1992. [DOI: 10.1246/cl.1992.73] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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45
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González Alvarez M, Díaz García M, Sanz-Medel A. Exploitation of synthetic surfactant vesicles for enhanced fluorescence of metal chelates. Anal Chim Acta 1990. [DOI: 10.1016/s0003-2670(00)83554-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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46
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Viscosity-dependent isomerization and fluorescence yields of merocyanine 540. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 1990. [DOI: 10.1016/1011-1344(90)85033-s] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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47
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Miyagishi S, Matsumura S, Asakawa T, Nishida M. Influence of sphere-rod transition in micelle shape on thermal cis-trans isomerization of 4-dimethylamino-4′-nitroazobenzene. J Colloid Interface Sci 1988. [DOI: 10.1016/0021-9797(88)90072-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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48
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Nakashima N, Ando R, Kunitake T. Fluorescence Behavior and Energy Transfer of Cyanine Dyes Bound to Bilayer Membranes of Double-Chain Ammonium Amphiphiles. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1987. [DOI: 10.1246/bcsj.60.1967] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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49
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Valdes-Aguilera O, Cincotta L, Foley J, Kochevar IE. Photobleaching of a cyanine dye in solution and in membranes. Photochem Photobiol 1987; 45:337-44. [PMID: 3562590 DOI: 10.1111/j.1751-1097.1987.tb05384.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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50
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Jones G, Jackson WR, Kanoktanaporn S, Bergmark WR. PHOTOPHYSICAL and PHOTOCHEMICAL PROPERTIES OF COUMARIN DYES IN AMPHIPHILIC MEDIA. Photochem Photobiol 1985. [DOI: 10.1111/j.1751-1097.1985.tb01597.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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