1
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Li W, Chang X, Zhou H, Yu W, Wang R, Chang J. Investigating the Inhibition of Diindolylmethane Derivatives on SARS-CoV-2 Main Protease. J Mol Recognit 2024; 37:e3101. [PMID: 39221493 DOI: 10.1002/jmr.3101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 08/08/2024] [Accepted: 08/17/2024] [Indexed: 09/04/2024]
Abstract
The SARS-CoV-2 main protease (Mpro) is an essential enzyme that promotes viral transcription and replication. Mpro conserved nature in different variants and its nonoverlapping nature with human proteases make it an attractive target for therapeutic intervention against SARS-CoV-2. In this work, the interaction mechanism between Mpro and diindolylmethane derivatives was investigated by molecular docking, enzymatic inhibition assay, UV-vis, fluorescence spectroscopy, and circular dichroism spectroscopy. Results of IC50 values show that 1p (9.87 μM) was the strongest inhibitor for Mpro in this work, which significantly inhibited the activity of Mpro. The binding constant (4.07 × 105 Lmol-1), the quenching constant (5.41 × 105 Lmol-1), and thermodynamic parameters indicated that the quenching mode of 1p was static quenching, and the main driving forces between 1p and Mpro are hydrogen bond and van der Waals force. The influence of molecular structure on the binding is investigated. Chlorine atoms and methoxy groups are favorable for the diindolylmethane derivative inhibitors of Mpro. This work confirms the changes in the microenvironment of Mpro by 1p, and provides clues for the design of potential inhibitors.
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Affiliation(s)
- Wenjin Li
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China
| | - Xiaoyu Chang
- College of Pharmacy, Zhengzhou University, Zhengzhou, China
| | - Hang Zhou
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China
| | - Wenquan Yu
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China
| | - Ruiyong Wang
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China
| | - Junbiao Chang
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China
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2
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Spectroscopic studies on binding of ibuprofen and drotaverine with bovine serum albumin. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3
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MA Y, HU Y, ZHENG L, CHEN L, ZHAO X, QU F. [Annual review of capillary electrophoresis technology in 2021]. Se Pu 2022; 40:591-599. [PMID: 35791597 PMCID: PMC9404112 DOI: 10.3724/sp.j.1123.2022.03040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Indexed: 11/25/2022] Open
Abstract
This paper provides an annual review of capillary electrophoresis (CE) technology in 2021. A total of 291 research papers related to CE technology published in 2021 were retrieved from the ISI Web of Science using the keywords, "capillary electrophoresis-mass spectrometry" "capillary isoelectric focusing" "micellar electrokinetic chromatography", or "capillary electrophoresis" (not "capillary electrochromatography" "microchip" and "capillary monolithic column"). In addition, nine research papers related to CE technology in Chinese journals were reviewed: Chinese Journal of Chromatography and Chinese Journal of Analytical Chemistry. This review focused on seven papers published in Coordination Chemistry Reviews, Angewandte Chemie-International Edition, Nature Protocols, TrAC-Trends in Analytical Chemistry, and Signal Transduction and Targeted Therapy with impact factors (IFs) greater than 10.0, as well as 42 papers reported in Analytical Chemistry, Analytica Chimica Acta, Talanta, and Food Chemistry with IFs between 5.0 and 10.0. This review also provides a comprehensive overview of representative CE works in Journal of Chromatography A and Electrophoresis with IFs<5.0, as well as important Chinese journals, Chinese Journal of Chromatography and Chinese Journal of Analytical Chemistry. According to the IF, this paper introduces the representative work of CE-related papers to allow readers to quickly understand the important research progress of CE technology in the past year.
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Affiliation(s)
| | | | | | | | | | - Feng QU
- *Tel:(010)68918015,E-mail:(屈锋)
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4
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Gandhi M, Indiramma J, Jayaprakash NS, Kumar AS. An efficient electrochemical sandwich ELISA for urinary human serum albumin-biomarker based on highly redox-active thionine surface-confined MWCNT/PEDOT.PSS platform. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Grabowska O, Kogut MM, Żamojć K, Samsonov SA, Makowska J, Tesmar A, Chmur K, Wyrzykowski D, Chmurzyński L. Effect of Tetraphenylborate on Physicochemical Properties of Bovine Serum Albumin. Molecules 2021; 26:6565. [PMID: 34770974 PMCID: PMC8588492 DOI: 10.3390/molecules26216565] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/22/2021] [Accepted: 10/28/2021] [Indexed: 11/16/2022] Open
Abstract
The binding interactions of bovine serum albumin (BSA) with tetraphenylborate ions ([B(Ph)4]-) have been investigated by a set of experimental methods (isothermal titration calorimetry, steady-state fluorescence spectroscopy, differential scanning calorimetry and circular dichroism spectroscopy) and molecular dynamics-based computational approaches. Two sets of structurally distinctive binding sites in BSA were found under the experimental conditions (10 mM cacodylate buffer, pH 7, 298.15 K). The obtained results, supported by the competitive interactions experiments of SDS with [B(Ph)4]- for BSA, enabled us to find the potential binding sites in BSA. The first site is located in the subdomain I A of the protein and binds two [B(Ph)4]- ions (logK(ITC)1 = 7.09 ± 0.10; ΔG(ITC)1 = -9.67 ± 0.14 kcal mol-1; ΔH(ITC)1 = -3.14 ± 0.12 kcal mol-1; TΔS(ITC)1 = -6.53 kcal mol-1), whereas the second site is localized in the subdomain III A and binds five ions (logK(ITC)2 = 5.39 ± 0.06; ΔG(ITC)2 = -7.35 ± 0.09 kcal mol-1; ΔH(ITC)2 = 4.00 ± 0.14 kcal mol-1; TΔS(ITC)2 = 11.3 kcal mol-1). The formation of the {[B(Ph)4]-}-BSA complex results in an increase in the thermal stability of the alfa-helical content, correlating with the saturation of the particular BSA binding sites, thus hindering its thermal unfolding.
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Affiliation(s)
| | | | | | | | | | | | | | - Dariusz Wyrzykowski
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland; (O.G.); (M.M.K.); (K.Ż.); (S.A.S.); (J.M.); (A.T.); (K.C.); (L.C.)
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6
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Raoufi A, Ebrahimi M, Bozorgmehr MR. Determination of Thermodynamics Constant of Interaction among of Atenolol and Metoprolol with Human Serum Albumin: Spectroscopic and Molecular Modeling Approaches. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2021. [DOI: 10.1134/s0036024421140181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Novel bind-then-release model based on fluorescence spectroscopy analysis with molecular docking simulation: New insights to zero-order release of arbutin and coumaric acid. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106356] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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8
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Preisz Z, Kunsági-Máté S. Effect of methotrexate and its photodegradation products on the temperature induced denaturation of human serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 245:118905. [PMID: 32927299 DOI: 10.1016/j.saa.2020.118905] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 08/25/2020] [Accepted: 08/29/2020] [Indexed: 06/11/2023]
Abstract
Effect of the photodegradation of chemotherapeutic agent methotrexate on the denaturation of human serum albumin has been studied by differential scanning calorimetry and fluorimetric measurements. Photoluminescence studies highlighted entropy driven binding of both methotrexate molecules and its degradation products to the albumin molecules. The calorimetric measurements evaluated by the Kissinger method show elevated activation energy in the presence of methotrexate. Similar but moderated enhancement of the activation energy was obtained in the presence of the photodegradation products of methotrexate. These results highlight stabilization of the human serum albumin by the methotrexate drug which finding may contribute to fine tuning of methotrexate applications in therapy.
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Affiliation(s)
- Zsolt Preisz
- Department of General and Physical Chemistry, Faculty of Sciences, University of Pécs, Ifjúság 6, H-7624 Pécs, Hungary; Institute of Organic and Medicinal Chemistry, Medical School, University of Pécs, Szigeti 12, H-7624 Pécs, Hungary.
| | - Sándor Kunsági-Máté
- Department of General and Physical Chemistry, Faculty of Sciences, University of Pécs, Ifjúság 6, H-7624 Pécs, Hungary; Institute of Organic and Medicinal Chemistry, Medical School, University of Pécs, Szigeti 12, H-7624 Pécs, Hungary; JánosSzentágothai Research Center, University of Pécs, Ifjúság 20, H-7624 Pécs, Hungary.
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9
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Macii F, Biver T. Spectrofluorimetric analysis of the binding of a target molecule to serum albumin: tricky aspects and tips. J Inorg Biochem 2020; 216:111305. [PMID: 33261935 DOI: 10.1016/j.jinorgbio.2020.111305] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 10/21/2020] [Accepted: 11/07/2020] [Indexed: 12/18/2022]
Abstract
Protein binding heavily modulates drug activity. Therefore, the binding features need to be elucidated when chemistry researchers study new molecules (metal complexes) to be used as drugs. This paper concerns the experimental and data treatment aspects of the mechanistic analysis of the binding to a fluorescent protein (the golden standard serum albumin) by using direct fluorescence titrations. Fluorescence data are not rarely only qualitatively used, neglecting further treatments which could offer a precious detailed picture of the behavior of the drug. We aim to spread a mechanistic approach, discussing the critical aspects for correctly designing the experiments and treating the data. The researcher may confirm adduct formation and evaluate binding constants (Stern-Volmer KSV or other types of K). Also, we discuss here, with the help of literature examples, the correct use of temperature dependence of K to extract thermodynamic parameters, comment on enthalpy-entropy compensation, together with the use of synchronous spectra and exchange experiments to gain information on the binding type and site. We think that this tutorial/critical synopsis can be of help for the increasing community dealing with these experiments, which are valuable but often much more tricky than it might appear at first sight.
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Affiliation(s)
- Francesca Macii
- Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa, Italy
| | - Tarita Biver
- Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa, Italy; Department of Pharmacy, University of Pisa, Pisa, Italy.
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10
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Michalcová L, Nevídalová H, Glatz Z. Toward an automated workflow for the study of plasma protein-drug interactions based on capillary electrophoresis-frontal analysis combined with in-capillary mixing of interacting partners. J Chromatogr A 2020; 1635:461734. [PMID: 33264700 DOI: 10.1016/j.chroma.2020.461734] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 11/06/2020] [Accepted: 11/12/2020] [Indexed: 12/15/2022]
Abstract
Capillary electrophoresis-frontal analysis (CE-FA) together with mobility shift affinity CE is the most frequently used mode of affinity CE for a study of plasma protein-drug interactions, which is a substantial part of the early stage of drug discovery. Whereas in the classic CE-FA setup the sample is prepared by off-line mixing of the interaction partners in the sample vial outside the CE instrument and after a short incubation period loaded into the capillary and analysed, in this work a new methodological approach has been developed that combines CE-FA with the mixing of interacting partners directly inside the capillary. This combination gives rise to a fully automated and versatile methodology for the characterization of these binding interactions besides a substantial reduction in the amounts of sample compounds used. The minimization of possible experimental errors due to the full involving of sophisticated CE instrument in the injection procedure, mixing and separation instead of manual manipulation is another fundamental benefit. The in-capillary mixing is based on the transverse diffusion of laminar flow profile methodology introduced by Krylov et al. using its multi-zone injection modification presented by Řemínek at al.. Actually, after the method optimization, the alternate introduction of six plugs of drug and six plugs of bovine serum protein in BGE, each injected for 3 s at a pressure of -10 mbar (-1 kPa) into the capillary filled by BGE, was found to be the best injection procedure. The method repeatability calculated as RSDs of plateau highs of bovine serum albumin and propranolol as model sample compounds were better than 3.44 %. Its applicability was finally demonstrated on the determination of apparent binding parameters of bovine serum albumin for basic drugs propranolol and lidocaine and acid drug phenylbutazone. The values obtained by a new on-line CE-FA methodology are in agreement with values estimated by classic off-line CE-FA, as well as with literature data obtained using different techniques.
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Affiliation(s)
- Lenka Michalcová
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Hana Nevídalová
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Zdeněk Glatz
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic.
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11
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Fenner K, Reynolds G, Basu S. Fluorescence quenching of various indoles by nickel complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 239:118473. [PMID: 32447217 DOI: 10.1016/j.saa.2020.118473] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 04/23/2020] [Accepted: 05/10/2020] [Indexed: 06/11/2023]
Abstract
The interactions between two nickel complexes with the ligand N,N'-bis (2-pyridylmethylene)-1,3-diaminopropyl and the indoles melatonin, serotonin, tryptamine, and tryptophol were characterized using UV-vis and fluorescence spectroscopy. The fluorescence of all the indoles were quenched in the presence of the complex with a hydroxyl group, indicating that hydrogen-bonding is a necessary interaction for quenching to occur. Various quenching parameters were determined using Stern-Volmer analysis and the quenching was determined to be of a mixed nature with high static quenching values (1011-1013 M-1). Additional analysis using the finite sink approximation indicated that the bimolecular reactions were not diffusion-limited and had high activation energies (135-199 kJ mol-1).
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Affiliation(s)
- Kristina Fenner
- Department of Chemistry, Susquehanna University, 514 University Avenue, Selinsgrove, PA 17870, United States of America
| | - Gustin Reynolds
- Department of Chemistry, Susquehanna University, 514 University Avenue, Selinsgrove, PA 17870, United States of America
| | - Swarna Basu
- Department of Chemistry, Susquehanna University, 514 University Avenue, Selinsgrove, PA 17870, United States of America.
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12
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Mokaberi P, Reyhani V, Amiri-Tehranizadeh Z, Saberi MR, Beigoli S, Samandar F, Chamani J. New insights into the binding behavior of lomefloxacin and human hemoglobin using biophysical techniques: binary and ternary approaches. NEW J CHEM 2019. [DOI: 10.1039/c9nj01048c] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Demonstrates the overlap that had been induced between the fluorescence emission spectrum of Hb and the absorption spectrum of drugs, which has proved that there is a high probability to the occurrence of energy transfer from Hb and LMF in the absence and presence of NRF.
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Affiliation(s)
- Parisa Mokaberi
- Department of Biology
- Faculty of Sciences
- Mashhad Branch
- Islamic Azad University
- Mashhad
| | - Vida Reyhani
- Department of Biology
- Faculty of Sciences
- Mashhad Branch
- Islamic Azad University
- Mashhad
| | | | - Mohammad Reza Saberi
- Department of Medical Chemistry
- School of Pharmacy
- Mashhad University of Medical Sciences
- Mashhad
- Iran
| | - Sima Beigoli
- Endoscopic and Minimally Invasive Surgery Research Center
- Mashhad University of Medical Sciences
- Mashhad
- Iran
| | - Farzaneh Samandar
- Department of Biology
- Faculty of Sciences
- Mashhad Branch
- Islamic Azad University
- Mashhad
| | - Jamshidkhan Chamani
- Department of Biology
- Faculty of Sciences
- Mashhad Branch
- Islamic Azad University
- Mashhad
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13
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Han Y, Shen H, Zhao M, Sun W. Flavour binding mechanism between a typical meat flavour compound (nonanal) and porcine myofibrillar proteins with consideration of conformational changes. Int J Food Sci Technol 2018. [DOI: 10.1111/ijfs.13784] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yurui Han
- School of Food Sciences and Engineering; South China University of Technology; Guangzhou 510640 China
| | - Hui Shen
- School of Food Sciences and Engineering; South China University of Technology; Guangzhou 510640 China
| | - Mouming Zhao
- School of Food Sciences and Engineering; South China University of Technology; Guangzhou 510640 China
| | - Weizheng Sun
- School of Food Sciences and Engineering; South China University of Technology; Guangzhou 510640 China
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14
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Panja S, Khatua DK, Halder M. Simultaneous Binding of Folic Acid and Methotrexate to Human Serum Albumin: Insights into the Structural Changes of Protein and the Location and Competitive Displacement of Drugs. ACS OMEGA 2018; 3:246-253. [PMID: 30023775 PMCID: PMC6045412 DOI: 10.1021/acsomega.7b01437] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 12/18/2017] [Indexed: 05/05/2023]
Abstract
Protein structure can be flexible to adopt multiple conformations to house small molecules. In this paper, we have attempted to experimentally figure out how the structure of a transport protein steer the drug-drug competition (DDC) by maintaining the equilibrium distribution of the bound and unbound fractions of drugs. This understanding is an important facet in biophysical and medicinal chemistry to ascertain the effectiveness of drugs. It is important to note that majority of studies involving small-molecule-transport protein interaction aimed at characterizing the binding process, and because these proteins can interact with thousands of molecules, there are hundreds of reports on such interactions. This ultimately led to an impression among the readers that any studies involving serum albumin may not lead to any new findings except for traditional binding explorations. However, in the present paper, we would like to draw the attention of the readers that our findings are very surprising, new, and important, involving the phenomenon of ligand-protein interaction. Here, we have studied two structurally similar drugs methotrexate (MTX) and folic acid (FA), which attempt to bind the primary binding site (subdomain IIA), one at a time, of human serum albumin. Details of binding analyses reveal that when both of the drugs are present, the single-site binding mode of FA prefers to occupy the primary binding site and hence pushes the primary-site-bound MTX to another location (subdomain IIIA), which is the second binding site of MTX. The structural analysis indicates that DDC has occurred in a cooperative fashion so that the loss of the protein secondary structure is minimum when both drugs are bound to the protein, which means that in the case of duo-drug binding, the conventional interaction between the drug and the protein is altered to undergo restoration of the protein structure. This can indeed regulate the DDC by modifying the bound and unbound fractions of MTX in plasma. The present study emphasizes that in vitro structural characterizations of the transport protein provide important information to improve the molecular-level understanding of DDC for further therapeutic applications with combination drug.
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Affiliation(s)
| | | | - Mintu Halder
- E-mail: . Phone: +91-3222-283314. Fax: +91-3222-282252 (M.H.)
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15
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Maciążek-Jurczyk M, Szkudlarek A, Chudzik M, Pożycka J, Sułkowska A. Alteration of human serum albumin binding properties induced by modifications: A review. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 188:675-683. [PMID: 28526195 DOI: 10.1016/j.saa.2017.05.023] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 04/23/2017] [Accepted: 05/09/2017] [Indexed: 06/07/2023]
Abstract
Albumin, a major transporting protein in the blood, is the main target of modification that affects the binding of drugs to Sudlow's site I and II. These modification of serum protein moderates its physiological function, and works as a biomarker of some diseases. The main goal of the paper was to explain the possible alteration of human serum albumin binding properties induced by modifications such as glycation, oxidation and ageing, their origin, methods of evaluation and positive and negative meaning described by significant researchers.
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Affiliation(s)
- Małgorzata Maciążek-Jurczyk
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, Jagiellońska 4, 41-200 Sosnowiec, Poland.
| | - Agnieszka Szkudlarek
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, Jagiellońska 4, 41-200 Sosnowiec, Poland
| | - Mariola Chudzik
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, Jagiellońska 4, 41-200 Sosnowiec, Poland
| | - Jadwiga Pożycka
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, Jagiellońska 4, 41-200 Sosnowiec, Poland
| | - Anna Sułkowska
- Silesian Medical College in Katowice, Mickiewicza 29, 40-085 Katowice, Poland
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16
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Kameníková M, Furtmüller PG, Klacsová M, Lopez-Guzman A, Toca-Herrera JL, Vitkovská A, Devínsky F, Mučaji P, Nagy M. Influence of quercetin on the interaction of gliclazide with human serum albumin - spectroscopic and docking approaches. LUMINESCENCE 2017; 32:1203-1211. [PMID: 28513070 DOI: 10.1002/bio.3312] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 12/20/2016] [Accepted: 02/15/2017] [Indexed: 01/13/2023]
Abstract
Protein-binding interactions are displacement reactions which have been implicated as the causative mechanisms in many drug-drug interactions. Thus, the aim of presented study was to analyse human serum albumin-binding displacement interaction between two ligands, hypoglycaemic drug gliclazide and widely distributed plant flavonoid quercetin. Fluorescence analysis was used in order to investigate the effect of substances on intrinsic fluorescence of human serum albumin (HSA) and to define binding and quenching properties of ligand-albumin complexes in binary and ternary systems, respectively. Both ligands showed the ability to bind to HSA, although to a different extent. The displacement effect of one ligand from HSA by the other one has been described on the basis of the quenching curves and binding constants comparison for the binary and ternary systems. According to the fluorescence data analysis, gliclazide presents a substance with a lower binding capacity towards HSA compared with quercetin. Results also showed that the presence of quercetin hindered the interaction between HSA and gliclazide, as the binding constant for gliclazide in the ternary system was remarkably lower compared with the binary system. This finding indicates a possibility for an increase in the non-bound fraction of gliclazide which can lead to its more significant hypoglycaemic effect. Additionally, secondary and tertiary structure conformational alterations of HSA upon binding of both ligands were investigated using synchronous fluorescence, circular dichroism and FT-IR. Experimental data were complemented with molecular docking studies. Obtained results provide beneficial information about possible interference upon simultaneous co-administration of the food/dietary supplement and drug.
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Affiliation(s)
- Miroslava Kameníková
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia
| | - Paul Georg Furtmüller
- Department of Chemistry, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Mária Klacsová
- Department of Physical Chemistry of Drugs, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia
| | - Arturo Lopez-Guzman
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - José Luis Toca-Herrera
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Anika Vitkovská
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia
| | - Ferdinand Devínsky
- Department of Chemical Theory of Drugs, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia
| | - Pavel Mučaji
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia
| | - Milan Nagy
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia
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17
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Han R, Liu B, Li G, Zhang Q. Investigation on the interaction of cefpirome sulfate with lysozyme by fluorescence quenching spectroscopy and synchronous fluorescence spectroscopy. LUMINESCENCE 2016; 31:580-586. [PMID: 26304690 DOI: 10.1002/bio.2998] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 07/09/2015] [Accepted: 07/10/2015] [Indexed: 12/16/2023]
Abstract
The reaction mechanism of cefpirome sulfate with lysozyme at different temperatures (298, 310 and 318 K) was investigated using fluorescence quenching and synchronous fluorescence spectroscopy under simulated physiological conditions. The results clearly demonstrated that cefpirome sulfate caused strong quenching of the fluorescence of lysozyme by a static quenching mechanism. The binding constants obtained using the above methods were of the same order of magnitude and very similar. Static electric forces played a key role in the interaction between cefpirome sulfate and lysozyme, and the number of binding sites in the interaction was close to 1. The values of Hill's coefficients were > 1, indicating that drugs or proteins showed a very weakly positive cooperativity in the system. In addition, the conclusions obtained from the two methods using the same equation were consistent. The results indicated that synchronous fluorescence spectrometry could be used to study the binding mechanism between drug and protein, and was a useful supplement to the fluorescence quenching method. In addition, the effect of cefpirome sulfate on the secondary structure of lysozyme was analyzed using circular dichroism spectroscopy.
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Affiliation(s)
- Rong Han
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry & Enviro nmental Science, Hebei University, Baoding, People's Republic of China
| | - Baosheng Liu
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry & Enviro nmental Science, Hebei University, Baoding, People's Republic of China
| | - Gaixia Li
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry & Enviro nmental Science, Hebei University, Baoding, People's Republic of China
| | - Qiuju Zhang
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry & Enviro nmental Science, Hebei University, Baoding, People's Republic of China
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Szkudlarek A, Sułkowska A, Maciążek-Jurczyk M, Chudzik M, Równicka-Zubik J. Effects of non-enzymatic glycation in human serum albumin. Spectroscopic analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 152:645-653. [PMID: 25735846 DOI: 10.1016/j.saa.2015.01.120] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 01/31/2015] [Indexed: 06/04/2023]
Abstract
Human serum albumin (HSA), transporting protein, is exposed during its life to numerous factors that cause its functions become impaired. One of the basic factors --glycation of HSA--occurs in diabetes and may affect HSA-drug binding. Accumulation of advanced glycation end-products (AGEs) leads to diseases e.g. diabetic and non-diabetic cardiovascular diseases, Alzheimer disease, renal disfunction and in normal aging. The aim of the present work was to estimate how non-enzymatic glycation of human serum albumin altered its tertiary structure using fluorescence technique. We compared glycated human serum albumin by glucose (gHSA(GLC)) with HSA glycated by fructose (gHSA(FRC)). We focused on presenting the differences between gHSA(FRC) and nonglycated (HSA) albumin used acrylamide (Ac), potassium iodide (KI) and 2-(p-toluidino)naphthalene-6-sulfonic acid (TNS). Changes of the microenvironment around the tryptophan residue (Trp-214) of non-glycated and glycated proteins was investigated by the red-edge excitation shift method. Effect of glycation on ligand binding was examined by the binding of phenylbutazone (PHB) and ketoprofen (KP), which a primary high affinity binding site in serum albumin is subdomain IIA and IIIA, respectively. At an excitation and an emission wavelength of λex 335nm and λem 420nm, respectively the increase of fluorescence intensity and the blue-shift of maximum fluorescence was observed. It indicates that the glycation products decreases the polarity microenvironment around the fluorophores. Analysis of red-edge excitation shift method showed that the red-shift for gHSA(FRC) is higher than for HSA. Non-enzymatic glycation also caused, that the Trp residue of gHSA(FRC) becomes less accessible for the negatively charged quencher (I(-)), KSV value is smaller for gHSA(FRC) than for HSA. TNS fluorescent measurement demonstrated the decrease of hydrophobicity in the glycated albumin. KSV constants for gHSA-PHB systems are higher than for the unmodified serum albumin, while KSV values for gHSA-KP systems are only slightly lower than that obtained for HSA-KP. The affinity of PHB to the glycated HSA is stronger than to the non-glycated in the first class binding sites within subdomain IIA, in the vicinity of Trp-214. Ketoprofen bound to unmodified human serum albumin stronger than for glycated albumin and one class of binding sites is observed (Scatchard linear plots).
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Affiliation(s)
- A Szkudlarek
- Medical University of Silesia, Faculty of Pharmacy, Department of Physical Pharmacy, Katowice, Poniatowskiego 15, Poland
| | - A Sułkowska
- Medical University of Silesia, Faculty of Pharmacy, Department of Physical Pharmacy, Katowice, Poniatowskiego 15, Poland.
| | - M Maciążek-Jurczyk
- Medical University of Silesia, Faculty of Pharmacy, Department of Physical Pharmacy, Katowice, Poniatowskiego 15, Poland
| | - M Chudzik
- Medical University of Silesia, Faculty of Pharmacy, Department of Physical Pharmacy, Katowice, Poniatowskiego 15, Poland
| | - J Równicka-Zubik
- Medical University of Silesia, Faculty of Pharmacy, Department of Physical Pharmacy, Katowice, Poniatowskiego 15, Poland
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19
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Maciążek-Jurczyk M, Sułkowska A, Równicka-Zubik J. Alteration of methotrexate binding to human serum albumin induced by oxidative stress. Spectroscopic comparative study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 152:537-550. [PMID: 25619857 DOI: 10.1016/j.saa.2014.12.113] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Revised: 11/22/2014] [Accepted: 12/30/2014] [Indexed: 06/04/2023]
Abstract
Changes of oxidative modified albumin conformation by comparison of non-modified (HSA) and modified (oHSA) human serum albumin absorption spectra, Red Edge Excitation Shift (REES) effect and fluorescence synchronous spectra were investigated. Studies of absorption spectra indicated that changes in the value of absorbance associated with spectral changes in the region from 200 to 250nm involve structural alterations related to variations in peptide backbone conformation. Analysis of the REES effect allowed for the observation of changes caused by oxidation in the region of the hydrophobic pocket containing the tryptophanyl residue. Synchronous fluorescence spectroscopy confirmed changes of the position of the tryptophanyl and tyrosil residues fluorescent band. Effect of oxidative stress on binding of methotrexate (MTX) was investigated by spectrofluorescence, UV-VIS and (1)HNMR spectroscopy. MTX caused the fluorescence quenching of non-modified (HSA) and modified (oHSA) human serum albumin molecule. The values of binding constants, Hill's coefficients and a number of binding sites in the protein molecule in the high affinity binding site were calculated for the binary MTX-HSA and MTX-oHSA systems. For these systems, qualitative analysis in the low affinity binding sites was performed with the use of the (1)HNMR technique.
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Affiliation(s)
- M Maciążek-Jurczyk
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, 41-200 Sosnowiec, Jagiellońska 4, Poland.
| | - A Sułkowska
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, 41-200 Sosnowiec, Jagiellońska 4, Poland
| | - J Równicka-Zubik
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, 41-200 Sosnowiec, Jagiellońska 4, Poland
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20
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Li G, Liu BS, Zhang Q, Han R. Investigation on the effect of fluorescence quenching of bovine serum albumin by cefoxitin sodium using fluorescence spectroscopy and synchronous fluorescence spectroscopy. LUMINESCENCE 2015; 31:1054-62. [DOI: 10.1002/bio.3071] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 10/16/2015] [Accepted: 11/04/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Gaixia Li
- Key Laboratory of Analytical Science and Technology of He bei Province, College of Chemistry & Environmental Science; Hebei University; Baoding 071002 Hebei Province People's Republic of China
| | - Bao-sheng Liu
- Key Laboratory of Analytical Science and Technology of He bei Province, College of Chemistry & Environmental Science; Hebei University; Baoding 071002 Hebei Province People's Republic of China
| | - Qiuju Zhang
- Key Laboratory of Analytical Science and Technology of He bei Province, College of Chemistry & Environmental Science; Hebei University; Baoding 071002 Hebei Province People's Republic of China
| | - Rong Han
- Key Laboratory of Analytical Science and Technology of He bei Province, College of Chemistry & Environmental Science; Hebei University; Baoding 071002 Hebei Province People's Republic of China
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21
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Maciążek-Jurczyk M, Sułkowska A. Spectroscopic analysis of the impact of oxidative stress on the structure of human serum albumin (HSA) in terms of its binding properties. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt B:265-282. [PMID: 25448930 DOI: 10.1016/j.saa.2014.09.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 07/14/2014] [Accepted: 09/15/2014] [Indexed: 06/04/2023]
Abstract
Oxygen metabolism has an important role in the pathogenesis of rheumatoid arthritis (RA). Reactive oxygen species (ROS) are produced in the course of cellular oxidative phosphorylation and by activated phagocytic cells during oxidative bursts, exceed the physiological buffering capacity and result in oxidative stress. ROS result in oxidation of serum albumin, which causes a number of structural changes in the spatial structure, may influence the binding and cause significant drug interactions, particularly in polytherapy. During the oxidation modification of amino acid residues, particularly cysteine and methionine may occur. The aim of the study was to investigate the influence of oxidative stress on human serum albumin (HSA) structure and evaluate of possible alterations in the binding of the drug to oxidized human serum albumin (oHSA). HSA was oxidized by a chloramine-T (CT). CT reacts rapidly with sulfhydryl groups and at pH 7.4 the reaction was monitored by spectroscopic techniques. Modification of free thiol group in the Cys residue in HSA was quantitatively determined by the use of Ellman's reagent. Changes of albumin conformation were examined by comparison of modified (oHSA) and nonmodified human serum albumin (HSA) absorption spectra, emission spectra, red-edge shift (REES) and synchronous spectroscopy. Studies of absorption spectra indicated that changes in the value of absorbance associated with spectral changes in the region of 200-250 nm involve structural alterations in peptide backbone conformation. Synchronous fluorescence spectroscopy technique confirmed changes of position of tryptophanyl and tyrosyl residues fluorescent band caused by CT. Moreover analysis of REES effect allowed to observe structural changes caused by CT in the region of the hydrophobic pocket containing the tryptophanyl residue. Effect of oxidative stress on binding of anti-rheumatic drugs, sulfasalazine (SSZ) and sulindac (SLD) in the high and low affinity binding sites was investigated by spectrofluorescence, ITC and (1)H NMR spectroscopy, respectively. SSZ and SLD change the affinity of each other to the binding site in non- and modified human serum albumin. The presence of SLD causes the increase of association constant (Ka) of SSZ-oHSA system and the strength of binding and the stability of the complexes has been observed while in the presence of SSZ a displacement of SLD from the SLD-HSA has been recorded. The analysis of (1)H NMR spectral parameters i.e. changes of chemical shifts of the drug indicate that the presence of SSZ and SLD have a mutual influence on changes in the affinity of human serum albumin binding site and this competition takes place not only due to the additional drug but also to the oxidation of HSA.
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Affiliation(s)
- M Maciążek-Jurczyk
- Department of Physical Pharmacy, Medical University of Silesia, Jagiellońska 4, 41-200 Sosnowiec, Poland.
| | - A Sułkowska
- Department of Physical Pharmacy, Medical University of Silesia, Jagiellońska 4, 41-200 Sosnowiec, Poland
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Zhang L, Liu B, Li Z, Guo Y. Comparative studies on the interaction of cefixime with bovine serum albumin by fluorescence quenching spectroscopy and synchronous fluorescence spectroscopy. LUMINESCENCE 2014; 30:686-92. [DOI: 10.1002/bio.2805] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 09/09/2014] [Accepted: 09/24/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Lihui Zhang
- Key Laboratory of Medical Chemistry and Molecular DiagnosisHebei University Baoding People's Republic of China
| | - Baosheng Liu
- Key Laboratory of Medical Chemistry and Molecular DiagnosisHebei University Baoding People's Republic of China
| | - Zhiyun Li
- Key Laboratory of Medical Chemistry and Molecular DiagnosisHebei University Baoding People's Republic of China
| | - Ying Guo
- Key Laboratory of Medical Chemistry and Molecular DiagnosisHebei University Baoding People's Republic of China
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23
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Interaction of methotrexate with trypsin analyzed by spectroscopic and molecular modeling methods. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.07.048] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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24
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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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25
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Liu B, Yan X, Cao S, Chong B, Lü Y. Studies on the interaction of palmatine hydrochloride with bovine hemoglobin. LUMINESCENCE 2013; 29:211-8. [DOI: 10.1002/bio.2529] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Revised: 12/01/2012] [Accepted: 02/06/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Baosheng Liu
- Key Laboratory of Medical Chemistry and Molecular Diagnosis, Ministry of Education, College of Chemistry & Environmental Science; Hebei University; Baoding 071002 People's Republic of China
| | - Xiaona Yan
- Key Laboratory of Medical Chemistry and Molecular Diagnosis, Ministry of Education, College of Chemistry & Environmental Science; Hebei University; Baoding 071002 People's Republic of China
| | - Shina Cao
- Key Laboratory of Medical Chemistry and Molecular Diagnosis, Ministry of Education, College of Chemistry & Environmental Science; Hebei University; Baoding 071002 People's Republic of China
| | - Baohong Chong
- Key Laboratory of Medical Chemistry and Molecular Diagnosis, Ministry of Education, College of Chemistry & Environmental Science; Hebei University; Baoding 071002 People's Republic of China
| | - Yunkai Lü
- Key Laboratory of Medical Chemistry and Molecular Diagnosis, Ministry of Education, College of Chemistry & Environmental Science; Hebei University; Baoding 071002 People's Republic of China
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26
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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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27
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Interaction of avelox with bovine serum albumin and effect of the coexistent drugs on the reaction. Int J Anal Chem 2012; 2012:408057. [PMID: 22505918 PMCID: PMC3296219 DOI: 10.1155/2012/408057] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Accepted: 11/15/2011] [Indexed: 11/18/2022] Open
Abstract
The interaction between Avelox and bovine serum albumin (BSA) was investigated at different temperatures by fluorescence spectroscopy. Results showed that Avelox could quench the intrinsic fluorescence of BSA strongly, and the quenching mechanism was a static quenching process with Förester spectroscopy energy transfer. The electrostatic force played an important role on the conjugation reaction between BSA and Avelox. The order of magnitude of binding constants (Ka) was 104, and the number of binding site (n) in the binary system was approximately equal to 1. The binding distance (r) was less than 3 nm and the primary binding site for Avelox was located in subdomain IIA of BSA. Synchronous fluorescence spectra clearly revealed that the microenvironment of amino acid residues and the conformation of BSA were changed during the binding reaction. In addition, the effect of some antibiotics on the binding constant of Avelox with BSA was also studied.
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Sanei H, Asoodeh A, Hamedakbari-Tusi S, Chamani J. Multi-spectroscopic Investigations of Aspirin and Colchicine Interactions with Human Hemoglobin: Binary and Ternary Systems. J SOLUTION CHEM 2011. [DOI: 10.1007/s10953-011-9766-3] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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29
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Maciążek-Jurczyk M, Sułkowska A, Bojko B, Równicka-Zubik J, Sułkowski WW. A spectroscopic study of phenylbutazone and aspirin bound to serum albumin in rheumatoid diseases. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 82:181-190. [PMID: 21856214 DOI: 10.1016/j.saa.2011.07.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Revised: 06/21/2011] [Accepted: 07/03/2011] [Indexed: 05/31/2023]
Abstract
Interaction of phenylbutazone (PBZ) and aspirin (ASA), two drugs recommended in rheumatoid diseases (RDs), when binding to human (HSA) and bovine (BSA) serum albumins, has been studied by quenching of fluorescence and proton nuclear magnetic resonance ((1)HNMR) techniques. On the basis of spectrofluorescence measurements high affinity binding sites of PBZ and ASA on albumin as well as their interaction within the binding sites were described. A low affinity binding site has been studied by proton nuclear magnetic resonance spectroscopy. Using fluorescence spectroscopy the location of binding site in serum albumin (SA) for PBZ and ASA was found. Association constants K(a) were determined for binary (i.e. PBZ-SA and ASA-SA) and ternary complexes (i.e. PBZ-[ASA]-SA and ASA-[PBZ]-SA). PBZ and ASA change the affinity of each other to the binding site in serum albumin (SA). The presence of ASA causes the increase of association constants K(aI) of PBZ-SA complex. Similarly, PBZ influences K(aI) of ASA-SA complex. This phenomenon shows that the strength of binding and the stability of the complexes increase in the presence of the second drug. The decrease of K(aII) values suggests that the competition between PBZ and ASA in binding to serum albumin in the second class of binding sites occurs. The analysis of (1)HNMR spectral parameters i.e. changes of chemical shifts and relaxation times of the drug indicate that the presence of ASA weakens the interaction of PBZ with albumin. Similarly PBZ weakens the interaction of ASA with albumin. This conclusion points to the necessity of using a monitoring therapy owning to the possible increase of uncontrolled toxic effects.
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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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Hou Z, Zhou N, He B, Yang Y, Yu X. Study of the interaction between quinocetone and bovine serum albumin by spectroscopic approaches. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.07.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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31
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Omidvar Z, Parivar K, Sanee H, Amiri-Tehranizadeh Z, Baratian A, Saberi MR, Asoodeh A, Chamani J. Investigations with Spectroscopy, Zeta Potential and Molecular Modeling of the Non-Cooperative Behaviour Between Cyclophosphamide Hydrochloride and Aspirin upon Interaction with Human Serum Albumin: Binary and Ternary Systems from the View Point of Multi-Drug Therapy. J Biomol Struct Dyn 2011; 29:181-206. [DOI: 10.1080/07391102.2011.10507382] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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32
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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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