51
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Non-biofouling property of well-defined concentrated polymer brushes. Colloids Surf B Biointerfaces 2015; 127:213-20. [DOI: 10.1016/j.colsurfb.2015.01.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 11/12/2014] [Accepted: 01/19/2015] [Indexed: 11/18/2022]
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52
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Bulienkov NA, Zheligovskaya EA. Role of bound water and precipitants in the self-organization of biocrystals. J STRUCT CHEM+ 2015. [DOI: 10.1134/s0022476614070051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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53
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Cao C, Lei J, Huang T, Du FP. Impact of ionic liquid-type imidazolium surfactant addition on dynamic properties of BSA adsorption layers at different pH. SOFT MATTER 2014; 10:8896-8904. [PMID: 25278154 DOI: 10.1039/c4sm01666a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The dynamic interfacial properties of mixed solutions of bovine serum albumin (BSA) and the ionic liquid-type imidazolium surfactant ([C16mim]Br) were measured as a function of the interface age, surfactant concentration and solution pH. Three BSA conformers were investigated: the normal N form as well as the fast F and aged A forms, corresponding to the different solution pH, respectively. The interfacial tension and the interfacial dilational elasticity isotherms for the mixed adsorption layers indicate that the addition of [C16mim]Br to the different structures of BSA isomers influences the properties of the adsorption layer at the decane/water interface. The addition of [C16mim]Br does not influence the structure of the protein at pH below the isoelectric point of BSA, but at higher solution pH, the addition of surfactants significantly influences the dynamic interfacial properties of BSA solutions due to the electrostatic interaction between the components.
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Affiliation(s)
- Chong Cao
- Department of Applied Chemistry, College of Science, China Agriculture University, Beijing, 100193, China.
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54
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Rhodes AA, Swartz BL, Hosler ER, Snyder DL, Benitez KM, Chohan BS, Basu S. Static quenching of tryptophan fluorescence in proteins by a dioxomolybdenum(VI) thiolate complex. J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2014.07.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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55
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Pongprayoon P, Gleeson MP. Probing the binding site characteristics of HSA: A combined molecular dynamics and cheminformatics investigation. J Mol Graph Model 2014; 54:164-73. [DOI: 10.1016/j.jmgm.2014.10.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 10/08/2014] [Accepted: 10/11/2014] [Indexed: 10/24/2022]
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56
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Phuangsawai O, Hannongbua S, Gleeson MP. Elucidating the Origin of the Esterase Activity of Human Serum Albumin Using QM/MM Calculations. J Phys Chem B 2014; 118:11886-94. [DOI: 10.1021/jp506629y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Oraphan Phuangsawai
- Department
of Chemistry,
Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
| | - Supa Hannongbua
- Department
of Chemistry,
Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
| | - M. Paul Gleeson
- Department
of Chemistry,
Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
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57
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Anees P, Sreejith S, Ajayaghosh A. Self-Assembled Near-Infrared Dye Nanoparticles as a Selective Protein Sensor by Activation of a Dormant Fluorophore. J Am Chem Soc 2014; 136:13233-9. [DOI: 10.1021/ja503850b] [Citation(s) in RCA: 146] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Palapuravan Anees
- Chemical Sciences and Technology
Division and ‡Academy of Scientific and Innovative
Research (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695019, India
| | - Sivaramapanicker Sreejith
- Chemical Sciences and Technology
Division and ‡Academy of Scientific and Innovative
Research (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695019, India
| | - Ayyappanpillai Ajayaghosh
- Chemical Sciences and Technology
Division and ‡Academy of Scientific and Innovative
Research (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695019, India
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58
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Luo Q, Wang Y, Yang H, Liu C, Ding Y, Xu H, Wang Q, Liu Y, Xie Y. Modeling the Interaction of Interferon α-1b to Bovine Serum Albumin as a Drug Delivery System. J Phys Chem B 2014; 118:8566-74. [DOI: 10.1021/jp5041713] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Qi Luo
- Soft
Matter Research Center and Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
| | - Yihui Wang
- State
Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmaceutics,
School of Pharmaceutical Sciences, Peking University, Beijing 100191, P.R. China
| | - Hongge Yang
- State
Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmaceutics,
School of Pharmaceutical Sciences, Peking University, Beijing 100191, P.R. China
| | - Chang Liu
- State
Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmaceutics,
School of Pharmaceutical Sciences, Peking University, Beijing 100191, P.R. China
| | - Yuan Ding
- State
Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmaceutics,
School of Pharmaceutical Sciences, Peking University, Beijing 100191, P.R. China
| | - Haifeng Xu
- State
Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmaceutics,
School of Pharmaceutical Sciences, Peking University, Beijing 100191, P.R. China
| | - Qi Wang
- Soft
Matter Research Center and Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
| | - Yingchun Liu
- Soft
Matter Research Center and Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
| | - Ying Xie
- State
Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmaceutics,
School of Pharmaceutical Sciences, Peking University, Beijing 100191, P.R. China
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59
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Równicka-Zubik J, Sułkowski L, Toborek M. Interactions of PCBs with human serum albumin: in vitro spectroscopic study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 124:632-7. [PMID: 24513710 PMCID: PMC4033824 DOI: 10.1016/j.saa.2014.01.069] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 01/04/2014] [Accepted: 01/10/2014] [Indexed: 05/10/2023]
Abstract
Following absorption, polychlorinated biphenyls (PCBs) bind to albumin and are transported via blood into the target tissues. PCBs then accumulate in tissues and induce a variety of harmful chronic and developmental effects. The aim of the present study is to determine binding parameters, such as binding constant, quenching constant, and number of binding sites for three PCB congeners (PCB118, PCB126 and PCB153) in complex with human serum albumin (HSA). The binding parameters for the complexes of HSA-PCB118, HSA-PCB126, and HSA-PCB153 excited at 280 nm were compared with those excited at 295 nm. Quenching (static and dynamic) of HSA fluorescence was analyzed based on the Stern-Volmer method. Binding (Ka) constants were calculated according to the Scatchard method and analysis of non-linear regression was based on a two-component model with the Lavenberg-Marquardt algorithm. For all analyzed complexes, a single independent class of binding site for PCB congeners was found in HSA subdomain IIA. Tyrosine residues appear to play the most prominent role in binding of PCB126 to HSA, while tryptophan-214 played a dominant role in interactions of PCB153 with HSA. Among studied PCB congeners, PCB118 formed the most stable complexes with HSA. These results illustrate the importance of studies targeting the binding of PCBs to serum albumin as part of the strategy to understand and protect against toxicity of these environmental toxicants.
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Affiliation(s)
- Joanna Równicka-Zubik
- Department of Physical Pharmacy, Faculty of Pharmacy, Medical University of Silesia, Jagiellońska 4, 41-200 Sosnowiec, Poland.
| | - Leszek Sułkowski
- Department of General and Vascular Surgery with Polytrauma Sub-Department, Regional Specialistic Hospital, Czestochowa, Poland
| | - Michal Toborek
- Department of Biochemistry and Molecular Biology, University of Miami School of Medicine, 1011 NW 15th Street, Miami, FL 33136, United States
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60
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Zhang Q, Wang Y, Ni Y, Kokot S. Analysis of Complex Molecular Systems: The Impact of Multivariate Analysis for Resolving the Interactions of Small Molecules with Biopolymers – a Review. ANAL LETT 2014. [DOI: 10.1080/00032719.2013.865202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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61
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Deciphering the interaction of a model transport protein with a prototypical imidazolium room temperature ionic liquid: Effect on the conformation and activity of the protein. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 133:99-107. [DOI: 10.1016/j.jphotobiol.2014.03.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 02/17/2014] [Accepted: 03/04/2014] [Indexed: 11/18/2022]
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62
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Lexa KW, Dolghih E, Jacobson MP. A structure-based model for predicting serum albumin binding. PLoS One 2014; 9:e93323. [PMID: 24691448 PMCID: PMC3972100 DOI: 10.1371/journal.pone.0093323] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 03/04/2014] [Indexed: 11/21/2022] Open
Abstract
One of the many factors involved in determining the distribution and metabolism of a compound is the strength of its binding to human serum albumin. While experimental and QSAR approaches for determining binding to albumin exist, various factors limit their ability to provide accurate binding affinity for novel compounds. Thus, to complement the existing tools, we have developed a structure-based model of serum albumin binding. Our approach for predicting binding incorporated the inherent flexibility and promiscuity known to exist for albumin. We found that a weighted combination of the predicted logP and docking score most accurately distinguished between binders and nonbinders. This model was successfully used to predict serum albumin binding in a large test set of therapeutics that had experimental binding data.
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Affiliation(s)
- Katrina W. Lexa
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California, United States of America
- * E-mail:
| | - Elena Dolghih
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California, United States of America
| | - Matthew P. Jacobson
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California, United States of America
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63
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Interactive association of drugs binding to human serum albumin. Int J Mol Sci 2014; 15:3580-95. [PMID: 24583848 PMCID: PMC3975355 DOI: 10.3390/ijms15033580] [Citation(s) in RCA: 224] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 02/17/2014] [Accepted: 02/18/2014] [Indexed: 02/06/2023] Open
Abstract
Human serum albumin (HSA) is an abundant plasma protein, which attracts great interest in the pharmaceutical industry since it can bind a remarkable variety of drugs impacting their delivery and efficacy and ultimately altering the drug’s pharmacokinetic and pharmacodynamic properties. Additionally, HSA is widely used in clinical settings as a drug delivery system due to its potential for improving targeting while decreasing the side effects of drugs. It is thus of great importance from the viewpoint of pharmaceutical sciences to clarify the structure, function, and properties of HSA–drug complexes. This review will succinctly outline the properties of binding site of drugs in IIA subdomain within the structure of HSA. We will also give an overview on the binding characterization of interactive association of drugs to human serum albumin that may potentially lead to significant clinical applications.
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64
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S S, C. H A, C GPD, B R, Ravindran A. BSA nanoparticle loaded atorvastatin calcium--a new facet for an old drug. PLoS One 2014; 9:e86317. [PMID: 24498272 PMCID: PMC3911917 DOI: 10.1371/journal.pone.0086317] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 12/08/2013] [Indexed: 11/22/2022] Open
Abstract
Background Currently, the discovery of effective chemotherapeutic agents poses a major challenge to the field of cancer biology. The present study focuses on enhancing the therapeutic and anti cancer properties of atorvastatin calcium loaded BSA (ATV-BSA) nanoparticles in vitro. Methodology/Results BSA-ATV nanoparticles were prepared using desolvation technique. The process parameters were optimized based on the amount of desolvating agent, stabilization conditions as well as the concentration of the cross linker. The anti cancer properties of the protein coated ATV nanoparticles were tested on MiaPaCa-2 cell lines. In vitro release behavior of the drug from the carrier suggests that about 85% of the drug gets released after 72 hrs. Our studies show that ATV-BSA nanoparticles showed specific targeting and enhanced cytotoxicity to MiaPaCa-2 cells when compared to the bare ATV. Conclusion We hereby propose that the possible mechanism of cellular uptake of albumin bound ATV could be through caveolin mediated endocytosis. Hence our studies open up new facet for an existing cholesterol drug as a potent anti-cancer agent.
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Affiliation(s)
- Sripriyalakshmi. S
- Center for Nanotechnology and Advanced Biomaterials (CeNTAB), School of Chemical and Biotechnology, SASTRA University, Tirumalaisamudram, Thanjavur, India
| | - Anjali. C. H
- Center for Nanotechnology and Advanced Biomaterials (CeNTAB), School of Chemical and Biotechnology, SASTRA University, Tirumalaisamudram, Thanjavur, India
| | - George Priya Doss. C
- Medical Biotechnology Division, School of Biosciences and Technology, VIT University, Vellore, India
| | - Rajith B
- Medical Biotechnology Division, School of Biosciences and Technology, VIT University, Vellore, India
| | - Aswathy Ravindran
- Center for Nanotechnology and Advanced Biomaterials (CeNTAB), School of Chemical and Biotechnology, SASTRA University, Tirumalaisamudram, Thanjavur, India
- * E-mail:
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65
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Kattnig DR, Reichenwallner J, Hinderberger D. Modeling Excluded Volume Effects for the Faithful Description of the Background Signal in Double Electron–Electron Resonance. J Phys Chem B 2013; 117:16542-57. [DOI: 10.1021/jp408338q] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Jörg Reichenwallner
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Institute
of Chemistry, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz
4, 06120 Halle (Saale), Germany
| | - Dariush Hinderberger
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Institute
of Chemistry, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz
4, 06120 Halle (Saale), Germany
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66
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Li Y, Zhang Y, Sun S, Zhang A, Liu Y. Binding investigation on the interaction between Methylene Blue (MB)/TiO2 nanocomposites and bovine serum albumin by resonance light-scattering (RLS) technique and fluorescence spectroscopy. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2013; 128:12-9. [DOI: 10.1016/j.jphotobiol.2013.07.027] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 07/26/2013] [Accepted: 07/31/2013] [Indexed: 01/11/2023]
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67
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Samanta A, Jana S, Ray D, Guchhait N. Modulated photophysics of a cationic DNA-staining dye inside protein bovine serum albumin: study of binding interaction and structural changes of protein. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 121:23-34. [PMID: 24216153 DOI: 10.1016/j.saa.2013.10.049] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 10/01/2013] [Accepted: 10/09/2013] [Indexed: 06/02/2023]
Abstract
The binding affinity of cationic DNA-staining dye, propidium iodide, with transport protein, bovine serum albumin, has been explored using UV-vis absorption, fluorescence, and circular dichroism spectroscopy. Steady state and time resolved fluorescence studies authenticate that fluorescence quenching of bovine serum albumin by propidium iodide is due to bovine serum albumin-propidium iodide complex formation. Thermodynamic parameters obtained from temperature dependent spectral studies cast light on binding interaction between the probe and protein. Site marker competitive binding has been encountered using phenylbutazone and flufenamic acid for site I and site II, respectively. Energy transfer efficiency and distance between bovine serum albumin and propidium iodide have been determined using Förster mechanism. Structural stabilization or destabilization of protein by propidium iodide has been investigated by urea denaturation study. The circular dichroism study as well as FT-IR measurement demonstrates some configurational changes of the protein in presence of the dye. Docking studies support the experimental data thereby reinforcing the binding site of the probe to the subdomain IIA of bovine serum albumin.
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Affiliation(s)
- Anuva Samanta
- Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India
| | - Sankar Jana
- Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India
| | - Debarati Ray
- Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India
| | - Nikhil Guchhait
- Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India.
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68
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Shahabadi N, Khorshidi A, Moghadam NH. Study on the interaction of the epilepsy drug, zonisamide with human serum albumin (HSA) by spectroscopic and molecular docking techniques. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 114:627-632. [PMID: 23811149 DOI: 10.1016/j.saa.2013.05.092] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 05/15/2013] [Accepted: 05/24/2013] [Indexed: 06/02/2023]
Abstract
In the present investigation, an attempt has been made to study the interaction of zonisamide (ZNS) with the transport protein, human serum albumin (HSA) employing UV-Vis, fluorometric, circular dichroism (CD) and molecular docking techniques. The results indicated that binding of ZNS to HSA caused strong fluorescence quenching of HSA through static quenching mechanism, hydrogen bonds and van der Waals contacts are the major forces in the stability of protein ZNS complex and the process of the binding of ZNS with HSA was driven by enthalpy (ΔH=-193.442 kJ mol(-1)). The results of CD and UV-Vis spectroscopy showed that the binding of this drug to HSA induced conformational changes in HSA. Furthermore, the study of molecular docking also indicated that zonisamide could strongly bind to the site I (subdomain IIA) of HSA mainly by hydrophobic interaction and there were hydrogen bond interactions between this drug and HSA, also known as the warfarin binding site.
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Affiliation(s)
- Nahid Shahabadi
- Department of Inorganic Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran.
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69
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Saboury AA, Shamsaei AA, Moosavi-Movahedi AA, Mansuri-Torshizi H. Thermodynamics of Binding 2,2′-Bipyridineglycinato Palladium (II) Chloride on Human Serum Albumin. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.199900125] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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70
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Shen Q, Wang L, Zhou H, Jiang HD, Yu LS, Zeng S. Stereoselective binding of chiral drugs to plasma proteins. Acta Pharmacol Sin 2013; 34:998-1006. [PMID: 23852086 PMCID: PMC3733166 DOI: 10.1038/aps.2013.78] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 05/17/2013] [Indexed: 12/15/2022] Open
Abstract
Chiral drugs show distinct biochemical and pharmacological behaviors in the human body. The binding of chiral drugs to plasma proteins usually exhibits stereoselectivity, which has a far-reaching influence on their pharmacological activities and pharmacokinetic profiles. In this review, the stereoselective binding of chiral drugs to human serum albumin (HSA), α1-acid glycoprotein (AGP) and lipoprotein, three most important proteins in human plasma, are detailed. Furthermore, the application of AGP variants and recombinant fragments of HSA for studying enantiomer binding properties is also discussed. Apart from the stereoselectivity of enantiomer-protein binding, enantiomer-enantiomer interactions that may induce allosteric effects are also described. Additionally, the techniques and methods used to determine drug-protein binding parameters are briefly reviewed.
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71
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Bosca F, Tormos R. Behavior of Drug Excited States within Macromolecules: Binding of Colchicine and Derivatives to Albumin. J Phys Chem B 2013; 117:7528-34. [DOI: 10.1021/jp402489j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Francisco Bosca
- Instituto Universitario Mixto
de Tecnologia Quimica (UPV-CSIC), Universitat Politecnica de Valencia, Avenida de los Naranjos s/n, 46022 Valencia,
Spain
| | - Rosa Tormos
- Departamento de Química
UPV, Universitat Politecnica de Valencia, Camino de Vera sn, 46022-Valencia, Spain
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72
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Binding, unfolding and refolding dynamics of serum albumins. Biochim Biophys Acta Gen Subj 2013; 1830:5394-404. [PMID: 23707713 DOI: 10.1016/j.bbagen.2013.05.017] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 05/08/2013] [Accepted: 05/13/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND The serum albumins (human and bovine serum albumin) occupy a seminal position among all proteins investigated until today as they are the most abundant circulatory proteins. They play the major role of a transporter of many bio-active substances which include various fatty acids, drug molecules, and amino acids to the target cells. Hence, studying the interaction of these serum albumins with different binding agents has attracted enormous research interests from decades. The nature and magnitude of these bindings have direct consequence on drug delivery, pharmacokinetics, therapeutic efficacy and drug design and control. SCOPE OF THE REVIEW In the present review, we summarize the binding characteristics of both the serum albumins with surfactants, lipids and vesicles, polymers and dendrimers, nanomaterials and drugs. Finally we have reviewed the effect of various chemical and physical denaturants on these albumins with a special emphasis on protein unfolding and refolding dynamics. MAJOR CONCLUSIONS The topic of binding and dynamics of protein unfolding and refolding spans across all areas of inter-disciplinary sciences and will benefit clinical toxicology and medicines. The extensive data from several contemporary research based on albumins will help us to understand protein dynamics in a more illustrious manner. GENERAL SIGNIFICANCE These data have immense significance in understanding and unravelling the mechanisms of protein unfolding/refolding and thus can pave the way to prevent protein mis-folding/aggregation which sometimes leads to severe consequences like Parkinson's and Alzheimer's diseases. This article is a part of a Special Issue entitled Serum Albumin. This article is part of a Special Issue entitled Serum Albumin.
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73
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Reichenwallner J, Hinderberger D. Using bound fatty acids to disclose the functional structure of serum albumin. Biochim Biophys Acta Gen Subj 2013; 1830:5382-93. [PMID: 23643928 DOI: 10.1016/j.bbagen.2013.04.031] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 04/23/2013] [Accepted: 04/24/2013] [Indexed: 11/16/2022]
Abstract
BACKGROUND Serum albumin is a major transport protein in mammals and is known to have at least seven binding sites for long-chain fatty acids (FAs). SCOPE OF REVIEW We have devised a new electron paramagnetic resonance (EPR) spectroscopic approach to gain information on the functional structure of serum albumin in solution in a "coarse-grained" manner from the ligands' point of view. Our approach is based on using spin labeled (paramagnetic) stearic acids self-assembled with albumin and subsequent nanoscale distance measurements between the FAs using double electron-electron resonance spectroscopy (DEER). Simple continuous wave (CW) EPR spectroscopy, which allows for quantification of bound ligands, complements our studies. MAJOR CONCLUSIONS Based on DEER nanoscale distance measurements, the functional solution structure of human serum albumin (HSA) has remarkably been found to have a much more symmetric distribution of entry points to the FA binding sites than expected from the crystal structure, indicating increased surface flexibility and plasticity for HSA in solution. In contrast, for bovine serum albumin (BSA), the entry point topology is in good agreement with that expected from the crystal structure of HSA. Changes in the solution structures between albumins can hence be revealed and extended to more albumins to detect functional differences at the nanoscale. Going beyond fundamental structural studies, our research platform is also excellently suited for general studies of protein-solvent interactions, temperature effects and ligand binding. GENERAL SIGNIFICANCE We discuss how our research platform helps illuminate protein dynamics and function and can be used to characterize albumin-based hybrid materials. This article is part of a Special Issue entitled Serum Albumin.
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Affiliation(s)
- Jörg Reichenwallner
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany; Institute for Pharmacy and Biochemistry, Johannes Gutenberg-Universität Mainz, Johann-Joachim-Becher-Weg 30, D-55128 Mainz, Germany
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74
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Taghavi F, Moosavi-Movahedi AA, Bohlooli M, Habibi-Rezaei M, Hadi Alijanvand H, Amanlou M, Sheibani N, Saboury AA, Ahmad F. Energetic domains and conformational analysis of human serum albumin upon co-incubation with sodium benzoate and glucose. J Biomol Struct Dyn 2013; 32:438-47. [PMID: 23581982 DOI: 10.1080/07391102.2013.775599] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Sodium benzoate (SB), a powerful inhibitor of microbial growth, is one of the most commonly used food preservative. Here, we determined the effects of SB on human serum albumin (HSA) structure in the presence or absence of glucose after 35 days of incubation under physiological conditions. The biochemical, biophysical, and molecular approaches including free amine content assay (TNBSA assay), fluorescence, and circular dichroism spectroscopy (CD), differential scanning calorimetry (DSC), and molecular docking and LIGPLOT studies were utilized for structural studies. The TNBSA results indicated that SB has the ability to bind Lys residues in HSA through covalent bonds. The docking and LIGPLOT studies also determined another specific site via hydrophobic interactions. The CD results showed more structural helicity for HSA incubated with SB, while HSA incubated with glucose had the least, and HSA incubated with glucose + SB had medium helicity. Fluorescence spectrophotometry results demonstrated partial unfolding of HSA incubated with SB in the presence or absence of glucose, while maximum partial unfolding was observed in HSA incubated with glucose. These results were confirmed by DSC and its deconvoluted thermograms. The DSC results also showed significant changes in HSA energetic structural domains due to HSA incubation with SB in the presence or absence of glucose. Together, our studies showed the formation of three different intermediates and indicate that biomolecular investigation are effective in providing new insight into safety determinations especially in health-related conditions including diabetes.
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Affiliation(s)
- F Taghavi
- a Institute of Biochemistry and Biophysics, University of Tehran , Tehran , Iran
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75
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Binding of serum albumins with bioactive substances – Nanoparticles to drugs. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2013. [DOI: 10.1016/j.jphotochemrev.2012.09.001] [Citation(s) in RCA: 160] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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76
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Fluorescence Spectroscopy Study on the Interaction between Evodiamine and Bovine Serum Albumin. J CHEM-NY 2013. [DOI: 10.1155/2013/308054] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The interaction of evodiamine (Evo) with bovine serum albumins (BSAs) at different two temperatures (298 and 310 K) was investigated by means of fluorescence spectroscopy. The experimental results showed that Evo binds with BSA via a static quenching procedure with association constantsKof1.61×106 L/mol at 298 K and6.78×105 L/mol at 310 K. The number of bound Evo molecules per protein is 1.31 at 298 K and 1.33 at 310 K. The results suggested that Evo reacts with BSA chiefly through hydrophobic and electrostatic interactions, and it does not alter theα-helical nature of BAS.
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77
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Akdogan Y, Reichenwallner J, Hinderberger D. Evidence for water-tuned structural differences in proteins: an approach emphasizing variations in local hydrophilicity. PLoS One 2012; 7:e45681. [PMID: 23049837 PMCID: PMC3458090 DOI: 10.1371/journal.pone.0045681] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Accepted: 08/22/2012] [Indexed: 11/19/2022] Open
Abstract
We present experimental evidence for the significant effect that water can have on the functional structure of proteins in solution. Human (HSA) and Bovine Serum Albumin (BSA) have an amino acid sequence identity of 75.52% and are chosen as model proteins. We employ EPR-based nanoscale distance measurements using double electron-electron resonance (DEER) spectroscopy and both albumins loaded with long chain fatty acids (FAs) in solution to globally (yet indirectly) characterize the tertiary protein structures from the bound ligands’ points of view. The complete primary structures and crystal structures of HSA and as of recently also BSA are available. We complement the picture as we have recently determined the DEER-derived solution structure of HSA and here present the corresponding BSA solution structure. The characteristic asymmetric FA distribution in the crystal structure of HSA can surprisingly be observed by DEER in BSA in solution. This indicates that the BSA conformational ensemble in solution seems to be narrow and close to the crystal structure of HSA. In contrast, for HSA in solution a much more symmetric FA distribution was found. Thus, conformational adaptability and flexibility dominate in the HSA solution structure while BSA seems to lack these properties. We further show that differences in amino acid hydropathies of specific structural regions in both proteins can be used to correlate the observed difference in the global (tertiary) solution structures with the differences on the primary structure level.
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Affiliation(s)
- Yasar Akdogan
- Max Planck Institute for Polymer Research, Mainz, Germany
| | - Jörg Reichenwallner
- Max Planck Institute for Polymer Research, Mainz, Germany
- Institut für Pharmazie und Biochemie, Johannes Gutenberg-Universität Mainz, Mainz, Germany
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78
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Jana S, Dalapati S, Ghosh S, Guchhait N. Potential charge transfer probe induced conformational changes of model plasma protein human serum albumin: Spectroscopic, molecular docking, and molecular dynamics simulation study. Biopolymers 2012; 97:766-77. [DOI: 10.1002/bip.22057] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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79
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Jana S, Dalapati S, Ghosh S, Guchhait N. Study of microheterogeneous environment of protein Human Serum Albumin by an extrinsic fluorescent reporter: A spectroscopic study in combination with Molecular Docking and Molecular Dynamics Simulation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2012; 112:48-58. [DOI: 10.1016/j.jphotobiol.2012.04.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 03/30/2012] [Accepted: 04/06/2012] [Indexed: 10/28/2022]
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80
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Chatterjee T, Pal A, Dey S, Chatterjee BK, Chakrabarti P. Interaction of virstatin with human serum albumin: spectroscopic analysis and molecular modeling. PLoS One 2012; 7:e37468. [PMID: 22649528 PMCID: PMC3359307 DOI: 10.1371/journal.pone.0037468] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Accepted: 04/24/2012] [Indexed: 12/20/2022] Open
Abstract
Virstatin is a small molecule that inhibits Vibrio cholerae virulence regulation, the causative agent for cholera. Here we report the interaction of virstatin with human serum albumin (HSA) using various biophysical methods. The drug binding was monitored using different isomeric forms of HSA (N form ∼pH 7.2, B form ∼pH 9.0 and F form ∼pH 3.5) by absorption and fluorescence spectroscopy. There is a considerable quenching of the intrinsic fluorescence of HSA on binding the drug. The distance (r) between donor (Trp214 in HSA) and acceptor (virstatin), obtained from Forster-type fluorescence resonance energy transfer (FRET), was found to be 3.05 nm. The ITC data revealed that the binding was an enthalpy-driven process and the binding constants K(a) for N and B isomers were found to be 6.09×10(5 )M(-1) and 4.47×10(5) M(-1), respectively. The conformational changes of HSA due to the interaction with the drug were investigated from circular dichroism (CD) and Fourier Transform Infrared (FTIR) spectroscopy. For 1:1 molar ratio of the protein and the drug the far-UV CD spectra showed an increase in α- helicity for all the conformers of HSA, and the protein is stabilized against urea and thermal unfolding. Molecular docking studies revealed possible residues involved in the protein-drug interaction and indicated that virstatin binds to Site I (subdomain IIA), also known as the warfarin binding site.
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Affiliation(s)
| | - Aritrika Pal
- Department of Biochemistry, Bose Institute, Kolkata, India
| | - Sucharita Dey
- Bioinformatics Centre, Bose Institute, Kolkata, India
| | | | - Pinak Chakrabarti
- Department of Biochemistry, Bose Institute, Kolkata, India
- Bioinformatics Centre, Bose Institute, Kolkata, India
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81
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Zhao X, Zhu Y, Chen F, Wu J. Calcium Phosphate Nanocarriers Dual‐Loaded with Bovine Serum Albumin and Ibuprofen: Facile Synthesis, Sequential Drug Loading and Sustained Drug Release. Chem Asian J 2012; 7:1610-5. [DOI: 10.1002/asia.201100954] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2011] [Revised: 01/28/2012] [Indexed: 11/12/2022]
Affiliation(s)
- Xin‐Yu Zhao
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050 (P.R. China), Fax: (+86) 21‐52413122
| | - Ying‐Jie Zhu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050 (P.R. China), Fax: (+86) 21‐52413122
| | - Feng Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050 (P.R. China), Fax: (+86) 21‐52413122
| | - Jin Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050 (P.R. China), Fax: (+86) 21‐52413122
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82
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Maciążek-Jurczyk M, Sułkowska A, Bojko B, Równicka-Zubik J, Szkudlarek-Haśnik A, Zubik-Skupień I, Góra A, Dubas M, Korzonek-Szlacheta I, Wielkoszyński T, Zurawiński W, Sosada K. The influence of fatty acids on theophylline binding to human serum albumin. Comparative fluorescence study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 89:270-275. [PMID: 22286055 DOI: 10.1016/j.saa.2011.12.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 11/15/2011] [Accepted: 12/15/2011] [Indexed: 05/31/2023]
Abstract
Theophylline, popular diuretic, is used to treat asthma and bronchospasm. In blood it forms complexes with albumin, which is also the main transporter of fatty acids. The aim of the present study was to describe the influence of fatty acids (FA) on binding of theophylline (Th) to human serum albumin (HSA) in the high affinity binding sites. Binding parameters have been obtained on the basis of the fluorescence analysis. The data obtained for the complex of Th and natural human serum albumin (nHSA) obtained from blood of obese patients qualified for surgical removal of stomach was compared with our previous studies on the influence of FA on the complex of Th and commercially available defatted human serum albumin (dHSA).
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Affiliation(s)
- M Maciążek-Jurczyk
- Department of Physical Pharmacy, Medical University of Silesia, Jagiellońska 4, 41-200 Sosnowiec, Poland.
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83
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Khodarahmi R, Karimi SA, Ashrafi Kooshk MR, Ghadami SA, Ghobadi S, Amani M. Comparative spectroscopic studies on drug binding characteristics and protein surface hydrophobicity of native and modified forms of bovine serum albumin: possible relevance to change in protein structure/function upon non-enzymatic glycation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 89:177-186. [PMID: 22261105 DOI: 10.1016/j.saa.2011.12.058] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 12/19/2011] [Accepted: 12/21/2011] [Indexed: 05/31/2023]
Abstract
The interaction between serum albumin (SA) and drugs has provided an interesting ground for understanding of drug effects, especially in drug distribution and drug-drug interaction on SA, in the case of multi-drug therapy. Determination of the impact of various factors on drug-protein interaction is especially important upon significant binding of drug to albumin. In the present study, the interaction of two drugs (furosemide and indomethacin) with native and modified albumins were investigated by using various spectroscopic methods. Fluorescence data indicated that 1:1 binding of drugs to bovine serum albumin (BSA) is associated with quenching of albumin intrinsic fluorescence. The Job's plot also confirmed that drug binds to BSA via mentioned stoichiometry. Analysis of the quenching and thermodynamic parameters indicated that intermolecular interactions between drug and albumin may change upon protein modification. The theoretical analyses also suggested some conformational changes of interacting side chains in subdomain IIA binding site (at the vicinity of W237), which were in good agreement with experimental data. Decrease of protein surface hydrophobicity (PSH) was also observed upon both albumin modification and drug binding.
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Affiliation(s)
- Reza Khodarahmi
- Medical Biology Research Center, Department of Pharmacognosy and Biotechnology, Faculty of Pharmacy, P.O. Box 67145-1673, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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84
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Bosca F. Seeking to Shed Some Light on the Binding of Fluoroquinolones to Albumins. J Phys Chem B 2012; 116:3504-11. [DOI: 10.1021/jp208930q] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Francisco Bosca
- Instituto
de Tecnología Química
UPV - CSIC, Universidad Politécnica de Valencia, Avda de los Naranjos s/n, 46022 Valencia,
Spain
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85
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Jana S, Dalapati S, Ghosh S, Guchhait N. Binding interaction between plasma protein bovine serum albumin and flexible charge transfer fluorophore: A spectroscopic study in combination with molecular docking and molecular dynamics simulation. J Photochem Photobiol A Chem 2012. [DOI: 10.1016/j.jphotochem.2011.12.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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86
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Shi Y, Liu H, Xu M, Li Z, Xie G, Huang L, Zeng Z. Spectroscopic studies on the interaction between an anticancer drug ampelopsin and bovine serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 87:251-257. [PMID: 22177222 DOI: 10.1016/j.saa.2011.11.048] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2011] [Accepted: 11/24/2011] [Indexed: 05/31/2023]
Abstract
The interaction between bovine serum albumin (BSA) and the anticancer drug molecule ampelopsin (AMP) was investigated using fluorescence spectroscopy, circular dichroism (CD) spectra, and time-resolved spectra under simulated physiological conditions. Fluorescence data showed that the intrinsic fluorescence of BSA was strongly quenched by AMP in terms of a dynamic quenching process. Binding constants and binding sites were calculated. The thermodynamic parameters indicated that the hydrogen bonding and weak van der Waals force played a major role in the interaction. The site marker competitive experiments suggested that the binding site of AMP and BSA was probably located on site III. Based on the Förster's theory, the average binding distance between AMP and BSA was obtained (r=5.47nm). The binding of AMP and BSA leaded to conformational changes of BSA according to synchronous fluorescence spectra, CD data and mean fluorescence lifetime values.
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Affiliation(s)
- Yanjun Shi
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
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87
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Zaragoza A, Teruel JA, Aranda FJ, Marqués A, Espuny MJ, Manresa Á, Ortiz A. Interaction of a Rhodococcus sp. trehalose lipid biosurfactant with model proteins: thermodynamic and structural changes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:1381-90. [PMID: 22172005 DOI: 10.1021/la203879t] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
One major application of surfactants is to prevent aggregation during various processes of protein manipulation. In this work, a bacterial trehalose lipid (TL) with biosurfactant activity, secreted by Rhodococcus sp., has been identified and purified. The interactions of this glycolipid with selected model proteins have been studied by using differential scanning calorimetry (DSC), Fourier-transform infrared (FTIR) spectroscopy, isothermal titration calorimetry (ITC), and fluorescence spectroscopy. Bovine serum albumin (BSA) and cytochrome c (Cyt-c) have been chosen because of their quite different secondary structures: BSA contains essentially no β-sheets and an average 66% α-helix, whereas Cyt-c possesses up to 25% β-sheets and up to 45% α-helical structure. Differential scanning calorimetry shows that addition of TL to BSA at concentrations below the critical micelle concentration (cmc) shifts the thermal unfolding temperature to higher values. FTIR indicates that TL does not alter the secondary structure of native BSA, but the presence of TL protects the protein toward thermal denaturation, mainly by avoiding formation of β-aggregates. Studies on the intrinsic Trp fluorescence of BSA show that addition of TL to the native protein results in conformational changes. BSA unfolding upon thermal denaturation in the absence of TL makes the Trp residues less accessible to the quencher, as shown by a decrease in the value of Stern-Volmer dynamic quenching constant, whereas denaturation in the presence of the biosurfactant prevents unfolding, in agreement with FTIR results. In the case of Cyt-c, interaction with TL gives rise to a new thermal denaturation transition, as observed by DSC, at temperatures below that of the native protein, therefore facilitating thermal unfolding. Binding of TL to native BSA and Cyt-c, as determined by ITC, suggests a rather nonspecific interaction of the biosurfactant with both proteins. FTIR indicates that TL slightly modifies the secondary structure of native Cyt-c, but protein denaturation in the presence of TL results in a higher proportion of β-aggregates than in its absence (20% vs 3.9%). The study of Trp fluorescence upon TL addition to Cyt-c results in a completely opposite scenario to that described above for BSA. In this case, addition of TL considerably increases the value of the dynamic quenching constant, both in native and denatured protein; that is, the interaction with the glycolipid induces conformational changes which facilitate the exposure of Trp residues to the quencher. Considering the structures of both proteins, it could be derived that the characteristics of TL interactions, either promoting or avoiding thermal unfolding, are highly dependent on the protein secondary structure. Our results also suggest the rather unspecific nature of these interactions. These might well involve protein hydrophobic domains which, being buried into the protein native structures, become exposed upon thermal unfolding.
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Affiliation(s)
- Ana Zaragoza
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Veterinaria, Universidad de Murcia , E-30100 Murcia, Spain
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88
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Bracchitta G, Catalfo A, De Guidi G. Photoinduced protein modifications by methylene blue and naproxen. Photochem Photobiol Sci 2012; 11:1886-96. [DOI: 10.1039/c2pp25067e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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89
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Crouse HF, Potoma J, Nejrabi F, Snyder DL, Chohan BS, Basu S. Quenching of tryptophan fluorescence in various proteins by a series of small nickel complexes. Dalton Trans 2012; 41:2720-31. [DOI: 10.1039/c2dt12169g] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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90
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Jana S, Ghosh S, Dalapati S, Guchhait N. Exploring structural change of protein bovine serum albumin by external perturbation using extrinsic fluorescence probe: spectroscopic measurement, molecular docking and molecular dynamics simulation. Photochem Photobiol Sci 2012; 11:323-32. [DOI: 10.1039/c1pp05180f] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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91
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Huang JQ, Lv QL, Wang HY. Spectroscopic study of the competitive interaction between streptomycin and Evans blue to bovine serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 83:28-33. [PMID: 21937264 DOI: 10.1016/j.saa.2011.05.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2010] [Revised: 05/05/2011] [Accepted: 05/17/2011] [Indexed: 05/31/2023]
Abstract
The mechanism of the competitive interaction of streptomycin and Evans blue (EB) to bovine serum albumin (BSA) has been studied by using both fluorimetry and spectrophtometry. Effects of pH, streptomycin and concentration of EB on the competitive interaction of streptomycin and EB were examined. A static fluorescence quenching process was confirmed in the light of Stern-Volmer plot. The test result showed that there were strong and weak binding sites on BSA molecule and the binding constant of EB-BSA complex and the number of binding site n were obtained. These facts revealed that the competitive interaction was occurred between EB and streptomycin, which can possibly provide useful message in investigation of the interaction of antibiotic with BSA.
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Affiliation(s)
- Jü-qin Huang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Pepole's Republic of China
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92
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Moyon NS, Mitra S. Luminol Fluorescence Quenching in Biomimicking Environments: Sequestration of Fluorophore in Hydrophobic Domain. J Phys Chem B 2011; 115:10163-72. [DOI: 10.1021/jp204424w] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Sivaprasad Mitra
- Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India
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93
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Maciążek-Jurczyk M, Sułkowska A, Równicka-Zubik J, Bojko B, Szkudlarek-Haśnik A, Knopik M, Sułkowski W. Polypharmacotherapy in rheumatology: 1H NMR analysis of binding of phenylbutazone and methotrexate to serum albumin. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2010.10.051] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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94
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Crystallographic analysis reveals the structural basis of the high-affinity binding of iophenoxic acid to human serum albumin. BMC STRUCTURAL BIOLOGY 2011; 11:18. [PMID: 21501503 PMCID: PMC3104944 DOI: 10.1186/1472-6807-11-18] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Accepted: 04/18/2011] [Indexed: 12/03/2022]
Abstract
Background Iophenoxic acid is an iodinated radiocontrast agent that was withdrawn from clinical use because of its exceptionally long half-life in the body, which was due in part to its high-affinity binding to human serum albumin (HSA). It was replaced by Iopanoic acid, which has an amino rather than a hydroxyl group at position 3 on the iodinated benzyl ring and, as a result, binds to albumin with lower affinity and is excreted more rapidly from the body. To understand how iophenoxic acid binds so tightly to albumin, we wanted to examine the structural basis of its interaction with HSA. Results We have determined the co-crystal structure of HSA in complex with iophenoxic acid at 2.75 Å resolution, revealing a total of four binding sites, two of which - in drugs sites 1 and 2 on the protein - are likely to be occupied at clinical doses. High-affinity binding of iophenoxic acid occurs at drug site 1. The structure reveals that polar and apolar groups on the compound are involved in its interactions with drug site 1. In particular, the 3-hydroxyl group makes three hydrogen bonds with the side-chains of Tyr 150 and Arg 257. The mode of binding to drug site 2 is similar except for the absence of a binding partner for the hydroxyl group on the benzyl ring of the compound. Conclusions The HSA-iophenoxic acid structure indicates that high-affinity binding to drug site 1 is likely to be due to extensive desolvation of the compound, coupled with the ability of the binding pocket to provide a full set of salt-bridging or hydrogen bonding partners for its polar groups. Consistent with this interpretation, the structure also suggests that the lower-affinity binding of iopanoic acid arises because replacement of the 3-hydroxyl by an amino group eliminates hydrogen bonding to Arg 257. This finding underscores the importance of polar interactions in high-affinity binding to albumin.
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95
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Bi S, Yan L, Sun Y, Zhang H. Investigation of ketoprofen binding to human serum albumin by spectral methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 78:410-414. [PMID: 21147021 DOI: 10.1016/j.saa.2010.11.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Revised: 10/09/2010] [Accepted: 11/15/2010] [Indexed: 05/30/2023]
Abstract
The binding of ketoprofen with human serum albumin (HSA) was studied by fluorescence and absorption spectroscopic methods. Quenching of fluorescence of HSA was found to be a static quenching process. At 288.15, 298.15, 308.15 and 318.15 K, the binding constants and binding sites were obtained. The effects of Cu2+, Al3+, Ca2+, Pb2+ and K+ on the binding at 288.15 K were also studied. The thermodynamic parameters, ΔH, ΔG and ΔS were got and the main sort of acting force between ketoprofen and HSA was studied. Based on the Förster's theory of non-radiation energy transfer, the binding average distance, r, between the acceptor (ketoprofen) and the donor (HSA) was calculated.
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Affiliation(s)
- Shuyun Bi
- College of Chemistry, Changchun Normal University, Changchun 130032, PR China.
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96
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Katrahalli U, Kalanur SS, Seetharamappa J. Interaction of bioactive coomassie brilliant blue g with protein: insights from spectroscopic methods. Sci Pharm 2010; 78:869-80. [PMID: 21179322 PMCID: PMC3007605 DOI: 10.3797/scipharm.1008-15] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2010] [Accepted: 11/06/2010] [Indexed: 11/22/2022] Open
Abstract
The binding of coomassie brilliant blue G (CBB) to bovine serum albumin (BSA) was investigated under simulative physiological conditions employing different optical spectroscopic techniques viz., fluorescence emission, UV–visible absorption and FTIR. Fluorescence quenching data obtained at different temperatures suggested the presence of dynamic type of quenching mechanism. The binding constant of CBB-BSA and the number of binding sites (n) for CBB in BSA were calculated and found to be 4.20 × 104 M−1 and 0.96 respectively, at 302 K. The value of n close to unity indicated that the protein has a single class of binding sites for CBB. The thermodynamic parameters revealed that the hydrophobic forces played a major role in the interaction of CBB to BSA. The distance between the CBB and protein was calculated using the theory of Föster’s Resonance Energy Transfer (FRET). The conformational change in the secondary structure of BSA upon interaction with dye was investigated by synchronous fluorescence and FTIR techniques. Competitive binding studies were also carried out to know the location of binding of CBB on BSA.
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Affiliation(s)
- Umesha Katrahalli
- Department of Chemistry, Karnatak University, Dharwad 580 003, India
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97
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Zhang G, Zhao N, Hu X, Tian J. Interaction of alpinetin with bovine serum albumin: Probing of the mechanism and binding site by spectroscopic methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 76:410-417. [PMID: 20427226 DOI: 10.1016/j.saa.2010.04.009] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Revised: 03/24/2010] [Accepted: 04/08/2010] [Indexed: 05/29/2023]
Abstract
The binding interaction between alpinetin and bovine serum albumin (BSA) in physiological buffer solution (pH 7.4) was investigated by fluorescence, UV-vis spectroscopy and Fourier transform infrared (FT-IR) spectroscopy. It was proved from fluorescence spectra that the fluorescence quenching of BSA by alpinetin was probably a result of the formation of BSA-alpinetin complexes, and the binding constant (K(a)) were determined according to the modified Stern-Volmer equation. The thermodynamic parameters, enthalpy change (DeltaH) and entropy change (DeltaS), were calculated to be 22.10kJmol(-1) and 166.04Jmol(-1)K(-1), respectively, which indicated that the interaction between alpinetin and BSA was driven mainly by hydrophobic interaction. Moreover, the competitive experiments of site markers suggested that the binding site of alpinetin to BSA was located in the region of subdomain IIA (sudlow site I). The binding distance (r) between the donor (BSA) and the acceptor (alpinetin) was 3.32nm based on the Förster theory of non-radioactive energy transfer. In addition, the results of synchronous fluorescence and FT-IR spectra demonstrated that the microenvironment and the secondary structure of BSA were changed in the presence of alpinetin.
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Affiliation(s)
- Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, 235, Nanjing East Road, Nanchang 330047, Jiangxi, China.
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98
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Bojko B, Sułkowska A, Maciazek-Jurczyk M, Równicka J, Sułkowski WW. Influence of myristic acid on furosemide binding to bovine serum albumin. Comparison with furosemide-human serum albumin complex. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 76:6-11. [PMID: 20308015 DOI: 10.1016/j.saa.2010.02.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2009] [Revised: 01/18/2010] [Accepted: 02/11/2010] [Indexed: 05/29/2023]
Abstract
Fluorescence studies on furosemide (FUR) binding to bovine serum albumin (BSA) showed the existence of three or four binding sites in the tertiary structure of the protein. Two of them are located in subdomain IIA, while the others in subdomains IB and/or IIIA. Furosemide binding in subdomain IB is postulated on the basis of run of Stern-Volmer plot indicating the existence of two populations of tryptophans involved in the interaction with FUR. In turn, the significant participation of tyrosil residues in complex formation leads to the consideration of the subdomain IIIA as furosemide low-affinity binding site. The effect of increasing concentration of fatty acid on FUR binding in all studied binding sites was also investigated and compared with the previous results obtained for human serum albumin (HSA). For BSA the lesser impact of fatty acid on affinity between drug and albumin was observed. This is probably a result of more significant role of tyrosines in the complex formation and different polarity of microenvironment of the fluorophores when compared HSA and BSA. The most distinct differences between FUR-BSA and FUR-HSA binding parameters are observed when third fatty acid molecule is bound with the protein and rotation of domains I and II occurs. However these structural changes mostly affect FUR low affinity binding sites.
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Affiliation(s)
- B Bojko
- Department of Physical Pharmacy, Faculty of Pharmacy, Medical University of Silesia, Jagiellońska 4, 41-200 Sosnowiec, Poland.
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99
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Jisha VS, Arun KT, Hariharan M, Ramaiah D. Site-Selective Interactions: Squaraine Dye−Serum Albumin Complexes with Enhanced Fluorescence and Triplet Yields. J Phys Chem B 2010; 114:5912-9. [DOI: 10.1021/jp100369x] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vadakkancheril S. Jisha
- Photosciences and Photonics, Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Trivandrum 695019, India
| | - Kalliat T. Arun
- Photosciences and Photonics, Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Trivandrum 695019, India
| | - Mahesh Hariharan
- Photosciences and Photonics, Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Trivandrum 695019, India
| | - Danaboyina Ramaiah
- Photosciences and Photonics, Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Trivandrum 695019, India
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100
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Wang J, Liu L, Liu B, Guo Y, Zhang Y, Xu R, Wang S, Zhang X. Spectroscopic study on interaction of bovine serum albumin with sodium magnesium chlorophyllin and its sonodynamic damage under ultrasonic irradiation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 75:366-374. [PMID: 19939730 DOI: 10.1016/j.saa.2009.10.042] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2009] [Revised: 10/15/2009] [Accepted: 10/26/2009] [Indexed: 05/28/2023]
Abstract
Sonodynamic therapy (SDT) is an attractive antitumor treatment for recent years. In this paper, sodium magnesium chlorophyllin (SMC) as a sonosensitizer combining with ultrasonic (US) irradiation to damage bovine serum albumin (BSA) has been investigated by fluorescence and UV-vis spectroscopy. The interaction of BSA with SMC was studied by the quenching of intrinsic fluorescence at varying temperature. The quenching constants (K(SV)), effective binding constants (K(A)), apparent association constants (K(a)) and binding site numbers were determined. The results indicated the quenching mechanism is a static procedure. Thermodynamic parameters show that the interactions involve hydrogen bonds, hydrophobic interactions, electrostatic interactions and complexations. The binding distance is 3.533 nm. The synergistic effect of SMC and ultrasound was estimated including the study of damage conditions. Synchronous fluorescence spectra indicate the damage to Trp residues is more serious. This paper may offer some valuable references for using spectroscopy method to study the application of chlorophyll derivatives in antitumor treatment.
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Affiliation(s)
- Jun Wang
- Department of Chemistry, Liaoning University, Shenyang, PR China.
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