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Rana DK, Bhattacharya SC. Implication toward a simple strategy to generate pH tunable FRET-based biosensing. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 282:121687. [PMID: 35940066 DOI: 10.1016/j.saa.2022.121687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 07/24/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
The present contribution depicts a unique approach to generate tunable Förster resonance energy transfer (FRET) emission with variation of pH of the medium. The pH sensitive absorption of Doxorubicin leads to modification of spectral overlap between emission spectra of donor (Pyrazoline) and absorption spectra of acceptor (Doxorubicin) thereby sensing maximum FRET efficiency in an optimum pH (near pKa of Doxorubicin). This drug molecule exhibits an instantaneous conformation change at a particular pH, which consequences on abrupt ON-and-OFF FRET efficiency. At elevated pH, both the drug molecules exhibit conformational change and form stable fluorescent exciplex, switching off the FRET emission. Confocal fluorescence images of live HepG2 cells imply that the sensor can proficiently go through the cell membrane and can be applied in the controlled delivery of drug to the tumor cell lines.
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Affiliation(s)
- Dipak Kumar Rana
- Department of Chemistry, Saldiha College, Bankura - 722173, West Bengal, India.
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2
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Chattopadhyay K, Datta S, Dhara S, Bertolasi V, Ray D. Exploration of varying coordination reactivity of Schiff base H3L toward CdII, ZnII and MgII: Hydroxido-bridged dimer, acetato-directed chain and live cell-imaging. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115288] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3
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Baral S, Phillips M, Yan H, Avenso J, Gundlach L, Baumeier B, Lyman E. Ultrafast Formation of the Charge Transfer State of Prodan Reveals Unique Aspects of the Chromophore Environment. J Phys Chem B 2020; 124:2643-2651. [PMID: 32160469 PMCID: PMC7587403 DOI: 10.1021/acs.jpcb.0c00121] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lipophilic dyes such as laurdan and prodan are widely used in membrane biology due to a strong bathochromic shift in emission that reports the structural parameters of the membrane such as area per molecule. Disentangling of the factors which control the spectral shift is complicated by the stabilization of a charge-transfer-like excitation of the dye in polar environments. Predicting the emission therefore requires modeling both the relaxation of the environment and the corresponding evolution of the excited state. Here, an approach is presented in which (i) the local environment is sampled by a classical molecular dynamics (MD) simulation of the dye and solvent, (ii) the electronically excited state of prodan upon light absorption is predicted by numerical quantum mechanics (QM), (iii) the iterative relaxation of the environment around the excited dye by MD coupled with the evolution of the excited state is performed, and (iv) the emission properties are predicted by QM. The QM steps are computed using the many-body Green's function in the GW approximation and the Bethe-Salpeter equation with the environment modeled as fixed point charges, sampled in the MD simulation steps. The comparison to ultrafast time-resolved transient absorption measurements demonstrates that the iterative molecular mechanics (MM)/QM approach agrees quantitatively with both the polarity-dependent shift in emission and the time scale over which the charge transfer state is stabilized. Together the simulations and experimental measurements suggest that the evolution into the charge transfer state is slower in amphiphilic solvents.
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Affiliation(s)
- Swapnil Baral
- Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, United States
| | - Matthew Phillips
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Han Yan
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Joseph Avenso
- Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, United States
| | - Lars Gundlach
- Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, United States
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Björn Baumeier
- Department of Mathematics and Computer Science, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
- Institute for Complex Molecular System, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Edward Lyman
- Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, United States
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
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Pashah Z, Hekmat A, Hesami Tackallou S. Structural effects of Diamond nanoparticles and Paclitaxel combination on calf thymus DNA. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2019; 38:249-278. [PMID: 30922151 DOI: 10.1080/15257770.2018.1515440] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The combination effects of nanodiamonds (NDs) and Paclitaxel (PTX) on the DNA structure were examined. The UV-Visible, steady-state and time-resolved fluorescence spectroscopy, CD, viscosity and zeta potential results showed that PTX + NDs could form a complex via groove binding mechanism. The values of binding constants, ΔG° and ΔH° and ΔS° values showed that PTX + NDs interact strongly with DNA and the hydrophobic force plays main role in this interaction. The ΔG25ο and Tm study indicated the instability of DNA in presence of PTX + NDs. This study demonstrated that NDs could enhance the effect of PTX on DNA structure as well as its affinity and binding to DNA.
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Affiliation(s)
- Zahra Pashah
- a Department of Biology , Science and Research Branch, Islamic Azad University , Tehran , Iran
| | - Azadeh Hekmat
- a Department of Biology , Science and Research Branch, Islamic Azad University , Tehran , Iran
| | - Saeed Hesami Tackallou
- b Department of Biology , Central Tehran Branch, Islamic Azad University , Tehran , Iran
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Bagoji AM, Buddanavar AT, Gokavi NM, Nandibewoor ST. Characterization of the binding and conformational changes of bovine serum albumin upon interaction with antihypertensive olmesartan medoxomil. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.10.089] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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6
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Chugh H, Kumar P, Tomar V, Kaur N, Sood D, Chandra R. Interaction of noscapine with human serum albumin (HSA): A spectroscopic and molecular modelling approach. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Singh AJ, Gorka AP, Bokesch HR, Wamiru A, O’Keefe BR, Schnermann MJ, Gustafson KR. Harnessing Natural Product Diversity for Fluorophore Discovery: Naturally Occurring Fluorescent Hydroxyanthraquinones from the Marine Crinoid Pterometra venusta. JOURNAL OF NATURAL PRODUCTS 2018; 81:2750-2755. [PMID: 30495954 PMCID: PMC6474788 DOI: 10.1021/acs.jnatprod.8b00761] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Fluorescent small molecules are important tools in many aspects of modern biology. A two-stage evaluation process involving fluorescence screening and live-cell imaging was developed to facilitate the identification of new fluorescent probes from extracts housed within the NCI Natural Products Repository. To this end, over 2000 extracts and prefractionated samples were examined, including an extract from the marine crinoid Pterometra venusta. An optically guided evaluation involving stepwise fluorescence screening and live-cell imaging was developed to enable the isolation of fluorescent natural products. These efforts resulted in the isolation of six hydroxyanthraquinone compounds, three of which are new natural products. These purified metabolites were examined for their potential as cellular imaging probes, and they demonstrate that natural product libraries can be a good source of new fluorescent agents.
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Affiliation(s)
- A. Jonathan Singh
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Alexander P. Gorka
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Heidi R. Bokesch
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Antony Wamiru
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Barry R. O’Keefe
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
- Natural Products Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21701-1201, United States
| | - Martin J. Schnermann
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Kirk R. Gustafson
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
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Interactions between epinastine and human serum albumin: Investigation by fluorescence, UV–vis, FT–IR, CD, lifetime measurement and molecular docking. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.066] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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9
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Sarkar A, Rakshit S, Bhattacharya SC. Interpreting the effect of confined cyclodextrin media on the FRET efficacy between Naproxen and a bio-active 3-pyrazolyl-2-pyrazoline derivative on the light of spectroscopic investigation appended by TD-DFT simulations and molecular docking analysis. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.04.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Ariga GG, Naik PN, Nandibewoor ST, Chimatadar SA. Quenching of fluorescence by meclizine, a probe study for structural and conformational changes in human serum albumin. J Biomol Struct Dyn 2016; 35:3161-3175. [DOI: 10.1080/07391102.2016.1245159] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Girish G. Ariga
- Department of Studies in Chemistry, Karnatak University, Dharwad 580003, India
| | - Praveen N. Naik
- Department of Studies in Chemistry, Karnatak University, Dharwad 580003, India
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Magdum PA, Gokavi NM, Nandibewoor ST. Study on the interaction between anti-tuberculosis drug ethambutol and bovine serum albumin: multispectroscopic and cyclic voltammetric approaches. LUMINESCENCE 2016; 32:206-216. [PMID: 27377878 DOI: 10.1002/bio.3169] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/06/2016] [Accepted: 05/10/2016] [Indexed: 11/09/2022]
Abstract
The binding of bovine serum albumin (BSA) to ethambutol (EMB) was investigated using spectroscopic methods, viz., fluorescence, Fourier transform infrared (FTIR), ultraviolet (UV)/vis absorption and cyclic voltammetry techniques. Spectroscopic analysis of the emission quenching at different temperatures revealed that the quenching mechanism of serum albumin by EMB is static, which was also confirmed by lifetime measurements. The number of binding sites, n, and binding constant, K, were obtained at various temperatures. The distance, r, between EMB and the protein was evaluated according to the Förster energy transfer theory. Based on displacement experiments using site probes, viz., warfarin, ibuprofen and digitoxin, the site of binding of EMB in BSA was proposed to be Sudlow's site I. The effect of EMB on the conformation of BSA was analyzed by using synchronous fluorescence spectra (SFS) and 3D fluorescence spectra. The results of fluorescence, UV/vis absorption and FTIR spectra showed that the conformation of BSA was changed in the presence of EMB. The thermodynamic parameters including enthalpy change (ΔH0 ), entropy change (ΔS0 ) and free energy change (ΔG0 ) for BSA-EMB were calculated according to the van't Hoff equation and are discussed.
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Affiliation(s)
- Prashant A Magdum
- Department of Studies in Chemistry, Karnatak University, Dharwad, Karnataka state, India
| | - Naveen M Gokavi
- Department of Studies in Chemistry, Karnatak University, Dharwad, Karnataka state, India
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12
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McMicken B, Thomas RJ, Brancaleon L. Partial Unfolding of Tubulin Heterodimers Induced by Two-Photon Excitation of Bound meso-Tetrakis(sulfonatophenyl)porphyrin. J Phys Chem B 2016; 120:3653-65. [PMID: 27035156 DOI: 10.1021/acs.jpcb.6b02055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The water-soluble porphyrin meso-tetrakis(p-sulfonatophenyl)porphyrin (TSPP) can be noncovalently bound to tubulin and used as a photosensitizer, which upon irradiation triggers photochemical reactions that lead to conformational changes of the protein. These conformational changes in turn inhibit tubulin's primary function of polymerizing into microtubules. We explored the possibility of using two-photon excitation of the bound porphyrin to induce photosensitized protein unfolding. Although TSPP has a relatively low cross section (∼30 GM) our results did find that two-photon excitation of the ligand causes partial unfolding of the tubulin host and the inhibition of the in vitro formation of microtubules. Conversely, irradiating tubulin alone caused no such effects despite the large irradiance per pulse (97-190 GW/cm(2)). The conformational changes were characterized using spectroscopic studies and provide a promising protocol for the future application of non-native photosensitization of proteins.
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Affiliation(s)
- Brady McMicken
- The University of Texas at San Antonio , Department of Physics and Astronomy, One UTSA Circle, San Antonio, Texas 78249, United States.,Human Effectiveness Directorate, Bioeffects Division, Optical Radiation Bioeffects Branch, 711th Human Performance Wing, Joint Base San Antonio , JBSA Fort Sam Houston, Texas 78234, United States
| | - Robert J Thomas
- Human Effectiveness Directorate, Bioeffects Division, Optical Radiation Bioeffects Branch, 711th Human Performance Wing, Joint Base San Antonio , JBSA Fort Sam Houston, Texas 78234, United States
| | - Lorenzo Brancaleon
- The University of Texas at San Antonio , Department of Physics and Astronomy, One UTSA Circle, San Antonio, Texas 78249, United States
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13
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Sivkova R, Trhlíková O, Zedník J, Sedláček J. Copolymerization of N
-(prop-1-yne-3-yl)-4-(piperidine-1-yl)-1,8-naphthalimide with Arylacetylenes into Fluorescent Polyacetylene-Type Conjugated Polymers. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500240] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Radoslava Sivkova
- Department of Physical and Macromolecular Chemistry; Faculty of Science; Charles University in Prague; Hlavova 8 CZ-12840 Prague 2 Czech Republic
| | - Olga Trhlíková
- Institute of Macromolecular Chemistry v.v.i.; Academy of Sciences of the Czech Republic; Heyrovský Sq. 2 16206 Prague 6 Czech Republic
| | - Jiří Zedník
- Department of Physical and Macromolecular Chemistry; Faculty of Science; Charles University in Prague; Hlavova 8 CZ-12840 Prague 2 Czech Republic
| | - Jan Sedláček
- Department of Physical and Macromolecular Chemistry; Faculty of Science; Charles University in Prague; Hlavova 8 CZ-12840 Prague 2 Czech Republic
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Investigation of the Interaction Between Human Serum Albumin and Two Drugs as Binary and Ternary Systems. Eur J Drug Metab Pharmacokinet 2015; 41:705-721. [DOI: 10.1007/s13318-015-0297-y] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Krstajić N, Levitt J, Poland S, Ameer-Beg S, Henderson R. 256 × 2 SPAD line sensor for time resolved fluorescence spectroscopy. OPTICS EXPRESS 2015; 23:5653-69. [PMID: 25836796 DOI: 10.1364/oe.23.005653] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
We present a CMOS chip 256 × 2 single photon avalanche diode (SPAD) line sensor, 23.78 µm pitch, 43.7% fill factor, custom designed for time resolved emission spectroscopy (TRES). Integrating time-to-digital converters (TDCs) implement on-chip mono-exponential fluorescence lifetime pre-calculation allowing timing of 65k photons/pixel at 200 Hz line rate at 40 ps resolution using centre-of-mass method (CMM). Per pixel time-correlated single-photon counting (TCSPC) histograms can also be generated with 320 ps bin resolution. We characterize performance in terms of dark count rate, instrument response function and lifetime uniformity for a set of fluorophores with lifetimes ranging from 4 ns to 6 ns. Lastly, we present fluorescence lifetime spectra of multicolor microspheres and skin autofluorescence acquired using a custom built spectrometer. In TCSPC mode, time-resolved spectra are acquired within 5 minutes whilst in CMM mode spectral lifetime signatures are acquired within 2 ms for fluorophore in cuvette and 200 ms for skin autofluorescence. We demonstrate CMOS line sensors to be a versatile tool for time-resolved fluorescence spectroscopy by providing parallelized and flexible spectral detection of fluorescence decay.
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16
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Applications of Fluorescence Anisotropy in Understanding Protein Conformational Disorder and Aggregation. PROGRESS IN OPTICAL SCIENCE AND PHOTONICS 2015. [DOI: 10.1007/978-981-287-242-5_3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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18
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Mandal H, Chakrabartty S, Ray D. Isothiocyanato and azido coordination induced structural diversity in zinc(ii) complexes with Schiff base containing tetrahydrofuran group: synthesis, characterization, crystal structure and fluorescence study. RSC Adv 2014. [DOI: 10.1039/c4ra11352g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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McMicken B, Thomas RJ, Brancaleon L. Photoinduced partial unfolding of tubulin bound to meso-tetrakis(sulfonatophenyl) porphyrin leads to inhibition of microtubule formation in vitro. JOURNAL OF BIOPHOTONICS 2014; 7:874-888. [PMID: 23893937 DOI: 10.1002/jbio.201300066] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 06/04/2013] [Accepted: 06/19/2013] [Indexed: 06/02/2023]
Abstract
The irradiation of the complex formed by meso-tetrakis (sulfonatophenyl) porphyrin (TSPP) and tubulin was investigated as well as its effects on the structure and function of the protein. We have used tubulin as a model target to investigate whether photoactive ligands docked to the protein can affect the structure and function of the protein upon exposure to visible light. We observed that laser irradiation prompts bleaching of the porphyrin which is accompanied by a sharp decrease (∼2 ns) in the average fluorescence lifetime of the protein and a change in the dichroic spectrum consistent with a decrease of helical structure. The result indicated the photoinduced partial unfolding of tubulin. We also observed that such partial conformational change inhibits the formation of microtubules in vitro. We investigated whether photosensitization of reactive oxygen species was responsible for these effects. Even upon removal of O2 the protein still undergoes conformational changes indicating that irradiation of the bound porphyrin does not require the presence of O2 to prompt conformational and functional effects opening the possibility that other mechanisms (e.g., charge transfer) are responsible for the photoinduced mechanism.
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Affiliation(s)
- Brady McMicken
- The University of Texas at San Antonio, Department of Physics and Astronomy, One UTSA Circle, San Antonio, Texas, 78249 USA; Optical Radiation Bioeffects Branch, Bioeffects Division, Air Force Research Laboratory, Fort Sam Houston, Texas 78234, USA
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Meti MD, Byadagi KS, Nandibewoor ST, Chimatadar SA. Multi-spectral characterization & effect of metal ions on the binding of bovine serum albumin upon interaction with a lincosamide antibiotic drug, clindamycin phosphate. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 138:324-30. [DOI: 10.1016/j.jphotobiol.2014.05.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 05/28/2014] [Accepted: 05/31/2014] [Indexed: 11/27/2022]
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21
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Sarkar A, Rakshit S, Chall S, Mati SS, Singharoy D, Bañuelos J, López Arbeloa I, Bhattacharya SC. Micellar charge induced emissive response of a bio-active 3-pyrazolyl-2-pyrazoline derivative: a spectroscopic and quantum chemical analysis. RSC Adv 2014. [DOI: 10.1039/c4ra06497f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
HOMO–LUMO distribution of PYZ in its ground and first singly excited state.
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Affiliation(s)
- Arindam Sarkar
- Department of Chemistry
- Jadavpur University
- Kolkata-700032, India
| | | | - Sayantani Chall
- Department of Chemistry
- Jadavpur University
- Kolkata-700032, India
| | | | - Dipti Singharoy
- Department of Chemistry
- Jadavpur University
- Kolkata-700032, India
| | - Jorge Bañuelos
- Departamento de Química Física
- Facultad de Cienciasy Tecnología
- Universidad del País Vasco-EHU
- 48080-Bilbao, Spain
| | - Iñigo López Arbeloa
- Departamento de Química Física
- Facultad de Cienciasy Tecnología
- Universidad del País Vasco-EHU
- 48080-Bilbao, Spain
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Biswas S, Pathak PN, Godbole SV, Roy SB. An Insight into the Speciation and Extraction Behavior of Eu(III) with Dinonyl Phenyl Phosphoric Acid and Di(2-ethylhexyl) Phosphoric Acid: Solvent Extraction and Fluorescence Studies. SEP SCI TECHNOL 2013. [DOI: 10.1080/01496395.2013.807836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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23
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Omidvar Z, Asoodeh A, Chamani J. Studies on the Antagonistic Behavior Between Cyclophosphamide Hydrochloride and Aspirin with Human Serum Albumin: Time-Resolved Fluorescence Spectroscopy and Isothermal Titration Calorimetry. J SOLUTION CHEM 2013. [DOI: 10.1007/s10953-013-0009-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Pandey S, Baker SN, Pandey S, Baker GA. Fluorescent Probe Studies of Polarity and Solvation within Room Temperature Ionic Liquids: A Review. J Fluoresc 2012; 22:1313-43. [DOI: 10.1007/s10895-012-1073-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Accepted: 05/29/2012] [Indexed: 10/28/2022]
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Mati SS, Mondal TK, Dhar S, Chall S, Bhattacharya SC. Differential contribution of Igepal and CnTAB micelles on the photophysics of nonsteroidal drug Naproxen. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 92:122-130. [PMID: 22446758 DOI: 10.1016/j.saa.2012.02.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Revised: 02/02/2012] [Accepted: 02/10/2012] [Indexed: 05/31/2023]
Abstract
Spectroscopic studies of Naproxen (NP), a nonsteroidal drug have been carried out in well characterized, micellar media of cationic surfactants of a homologous series having general formula C(n)TAB (alkyl trimethyl ammonium bromide) and of nonionic surfactants of Igepal (Ig) series (poly(oxyethylene) nonyl phenol). The fluorescence behavior of the drug molecule in C(n)TAB micelles has been found to be opposite to that in Igepal micelles. The binding constants during probe micelle binding have been evaluated from relevant fluorescence data. Location and nature of the surrounding medium of the probe in micellar media have been ascertained from fluorescence quenching study. Fluorescence anisotropy parameter has been monitored for exploring the imposed motional restriction of the microenvironment around the probe. Contrasting behavior of the drug molecule has been observed in two different types of micelles. Based on the experimental and theoretical studies, an attempt has been made to explain the different behavior of the probe in different media.
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Beyreiss R, Ohla S, Nagl S, Belder D. Label-free analysis in chip electrophoresis applying deep UV fluorescence lifetime detection. Electrophoresis 2012; 32:3108-14. [PMID: 22102494 DOI: 10.1002/elps.201100204] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Herein we introduce deep UV fluorescence lifetime detection in microfluidics applied for label-free detection and identification of various aromatic analytes in chip electrophoresis. For this purpose, a frequency quadrupled Nd:YAG (neodymium-doped yttrium aluminum garnet) picosecond laser at 266 nm was incorporated into an inverse fluorescence microscope setup with time-correlated single photon counting detection. This allowed recording of photon timing with sub-nanosecond precision. Thereby fluorescence decay curves are gathered on-the-fly and average lifetimes can be determined for each substance in the electropherogram. The aromatic compounds serotonin, propranolol, 3-phenoxy-1,2-propanediol and tryptophan were electrophoretically separated using a fused-silica microchip. Average lifetimes were independently determined for each compound via bi-exponential tail fitting. Time-correlated single photon counting also allows the discrimination of background fluorescence in the time domain. This results in improved signal-to-noise-ratios as demonstrated for the above model analytes. Microchip electrophoretic separations with fluorescence lifetime detection were also performed with a protein mixture containing lysozyme, trypsinogen and chymotrypsinogen emphasizing the potential for biopolymer analysis.
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Affiliation(s)
- Reinhild Beyreiss
- University of Leipzig, Institute of Analytical Chemistry, Leipzig, Germany
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27
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Ohla S, Beyreiss R, Fritzsche S, Glaser P, Nagl S, Stockhausen K, Schneider C, Belder D. Monitoring On-Chip Pictet-Spengler Reactions by Integrated Analytical Separation and Label-Free Time-Resolved Fluorescence. Chemistry 2011; 18:1240-6. [DOI: 10.1002/chem.201101768] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Revised: 09/08/2011] [Indexed: 02/06/2023]
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28
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Rana DK, Dhar S, Sarkar A, Bhattacharya SC. Dual Intramolecular Hydrogen Bond as a Switch for Inducing Ground and Excited State Intramolecular Double Proton Transfer in Doxorubicin: An Excitation Wavelength Dependence Study. J Phys Chem A 2011; 115:9169-79. [DOI: 10.1021/jp204165j] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dipak Kumar Rana
- Department of Chemistry, Jadavpur University, Kolkata−700032, India
| | - Sayaree Dhar
- Department of Chemistry, Jadavpur University, Kolkata−700032, India
| | - Arindam Sarkar
- Department of Chemistry, Jadavpur University, Kolkata−700032, India
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29
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A new high-pressure optical membrane module for direct observation of seawater RO membrane fouling and cleaning. J Memb Sci 2010. [DOI: 10.1016/j.memsci.2010.08.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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30
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Banerjee P, Pramanik S, Sarkar A, Bhattacharya SC. Deciphering the Fluorescence Resonance Energy Transfer Signature of 3-Pyrazolyl 2-Pyrazoline in Transport Proteinous Environment. J Phys Chem B 2009; 113:11429-36. [DOI: 10.1021/jp811479r] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Paltu Banerjee
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | | | - Arindam Sarkar
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
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31
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Meshkova SB, Kiriyak AV, Tsvirko MP, Gorodnyuk VP. A new luminescence method for determining dysprosium in the presence of terbium. JOURNAL OF ANALYTICAL CHEMISTRY 2008. [DOI: 10.1134/s1061934808090062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Banerjee P, Pramanik S, Sarkar A, Bhattacharya SC. Modulated Photophysics of 3-Pyrazolyl-2-pyrazoline Derivative Entrapped in Micellar Assembly. J Phys Chem B 2008; 112:7211-9. [DOI: 10.1021/jp800200v] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Paltu Banerjee
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | | | - Arindam Sarkar
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
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33
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Abstract
Small-molecule fluorescent probes embody an essential facet of chemical biology. Although numerous compounds are known, the ensemble of fluorescent probes is based on a modest collection of modular "core" dyes. The elaboration of these dyes with diverse chemical moieties is enabling the precise interrogation of biochemical and biological systems. The importance of fluorescence-based technologies in chemical biology elicits a necessity to understand the major classes of small-molecule fluorophores. Here, we examine the chemical and photophysical properties of oft-used fluorophores and highlight classic and contemporary examples in which utility has been built upon these scaffolds.
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Affiliation(s)
| | - Ronald T. Raines
- Department of Chemistry
- Department of Biochemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706
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34
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Owens P, Ryder AG, Blamey NJF. Frequency Domain Fluorescence Lifetime Study of Crude Petroleum Oils. J Fluoresc 2008; 18:997-1006. [DOI: 10.1007/s10895-008-0330-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2007] [Accepted: 01/22/2008] [Indexed: 11/29/2022]
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35
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Klitgaard S, Neves-Petersen MT, Petersen SB. Quenchers Induce Wavelength Dependence on Protein Fluorescence Lifetimes. J Fluoresc 2006; 16:595-609. [PMID: 16794870 DOI: 10.1007/s10895-006-0081-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2005] [Accepted: 02/06/2006] [Indexed: 10/24/2022]
Abstract
We have analysed the picosecond resolved fluorescence emission decay of horseradish peroxidase A2 and of HEW lysozyme acquired with a streak camera. Analyses of the fluorescence decay data of both proteins revealed that the dynamics of the decay is dependent on the emission wavelength. Our data strongly indicates that resonance energy transfer occurring between aromatic residues and different protein fluorescence quencher groups, and the nature of the quencher groups, are the causes of the observed wavelength dependent mean lifetime distribution. Using the global analysis data to calculate the fluorescence mean lifetime at each wavelength revealed that for lysozyme, the mean fluorescence lifetime increased with observation wavelength, whereas the opposite was the case for peroxidase. Both proteins contain strong fluorescence quencher groups located in close spatial proximity to the protein's aromatic residues. Lysozyme contains disulfide bridges as the main fluorescence quencher whereas peroxidase contains a heme group. Both for lysozyme and horseradish peroxidase there is a clear correlation between the observed fluorescence mean lifetime of the protein at a particular emission wavelength and the respective quencher's extinction coefficient at the respective wavelength. Furthermore, our study also reports a comparison of the analyses of the fluorescence data done with three different methods. Analyses of the fluorescence decay at 10 different fluorescence emission wavelengths revealed significant differences in both fluorescence lifetimes and the pre-exponential factor distributions. Such values differed from the values recovered from the integrated decay curves and from global analyse.
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Affiliation(s)
- Søren Klitgaard
- NanoBiotechnology Group, Department of Physics and Nanotechnology, Aalborg University, Skjernvej 4C, Aalborg, Denmark
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36
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Royzen M, Durandin A, Young VG, Geacintov NE, Canary JW. A sensitive probe for the detection of Zn(II) by time-resolved fluorescence. J Am Chem Soc 2006; 128:3854-5. [PMID: 16551061 DOI: 10.1021/ja056631g] [Citation(s) in RCA: 176] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new, highly sensitive fluorescent sensor for Zn(II) ion (a tris(2-pyridylmethyl)amine derivative) shows very strong binding and Zn(II) concentration-dependent biexponential time-resolved fluorescence (TRF) decay profiles that can be used for ratiometric estimates of Zn(II) concentrations. The ligand-metal complexes were characterized in solution by spectroscopic techniques and in the solid state by X-ray crystallography. The TRF studies revealed that the sensor aggregates in the absence of Zn(II) in a ligand concentration-dependent manner, a complication that is discerned by TRF but not by steady-state fluorescence ratiometric sensing techniques. It is shown that the same TRF methods are highly useful for monitoring Zn(II) concentrations in A549 epithelial lung cells in vitro and that the results were consistent with those in solution.
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Affiliation(s)
- Maksim Royzen
- Department of Chemistry, New York University, New York, New York 10003, USA
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37
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38
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Tleugabulova D, Czardybon W, Brennan JD. Time-Resolved Fluorescence Anisotropy in Assessing Side-Chain and Segmental Motions in Polyamines Entrapped in Sol−Gel Derived Silica. J Phys Chem B 2004. [DOI: 10.1021/jp0491109] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dina Tleugabulova
- Department of Chemistry, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Wojciech Czardybon
- Department of Chemistry, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - John D. Brennan
- Department of Chemistry, McMaster University, Hamilton, Ontario L8S 4M1, Canada
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39
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Powe AM, Fletcher KA, St Luce NN, Lowry M, Neal S, McCarroll ME, Oldham PB, McGown LB, Warner IM. Molecular Fluorescence, Phosphorescence, and Chemiluminescence Spectrometry. Anal Chem 2004; 76:4614-34. [PMID: 15307770 DOI: 10.1021/ac040095d] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Aleeta M Powe
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
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