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Spectroscopic study on the interaction between mononaphthalimide spermidine (MINS) and bovine serum albumin (BSA). JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 142:103-9. [DOI: 10.1016/j.jphotobiol.2014.10.013] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 10/18/2014] [Accepted: 10/27/2014] [Indexed: 11/23/2022]
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52
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Qi L, Lu Z, Lang WH, Guo L, Ma CG, Sun GH. Binding of a potential anti-hepatoma drug cis,cis,trans-[Pt(NH3)2Cl2(O2CCH2CH2COOH)-(OCONHC16H33)] with serum albumin – thermodynamic and conformational investigations. NEW J CHEM 2015. [DOI: 10.1039/c5nj01103e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A potential anti-cancer compound with high activity was synthesized and its binding properties with human serum albumin were tested.
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Affiliation(s)
- Li Qi
- Clinical College of Weifang Medical University
- Weifang 261031
- China
| | - Zhong Lu
- Clinical College of Weifang Medical University
- Weifang 261031
- China
| | - Wen-hua Lang
- Clinical College of Weifang Medical University
- Weifang 261031
- China
| | - Lu Guo
- Clinical College of Weifang Medical University
- Weifang 261031
- China
| | - Chang-geng Ma
- Clinical College of Weifang Medical University
- Weifang 261031
- China
| | - Guang-hong Sun
- Clinical College of Weifang Medical University
- Weifang 261031
- China
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53
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Interaction Between Ginkgolic Acid and Human Serum Albumin by Spectroscopy and Molecular Modeling Methods. J SOLUTION CHEM 2014. [DOI: 10.1007/s10953-014-0200-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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54
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Huang R, Carney RP, Ikuma K, Stellacci F, Lau BLT. Effects of surface compositional and structural heterogeneity on nanoparticle-protein interactions: different protein configurations. ACS NANO 2014; 8:5402-12. [PMID: 24882660 DOI: 10.1021/nn501203k] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
As nanoparticles (NPs) enter into biological systems, they are immediately exposed to a variety and concentration of proteins. The physicochemical interactions between proteins and NPs are influenced by the surface properties of the NPs. To identify the effects of NP surface heterogeneity, the interactions between bovine serum albumin (BSA) and gold NPs (AuNPs) with similar chemical composition but different surface structures were investigated. Different interaction modes and BSA conformations were studied by dynamic light scattering, circular dichroism spectroscopy, fluorescence quenching and isothermal titration calorimetry (ITC). Depending on the surface structure of AuNPs, BSA seems to adopt either a "side-on" or an "end-on" conformation on AuNPs. ITC demonstrated that the adsorption of BSA onto AuNPs with randomly distributed polar and nonpolar groups was primarily driven by electrostatic interaction, and all BSA were adsorbed in the same process. The adsorption of BSA onto AuNPs covered with alternating domains of polar and nonpolar groups was a combination of different interactions. Overall, the results of this study point to the potential for utilizing nanoscale manipulation of NP surfaces to control the resulting NP-protein interactions.
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Affiliation(s)
- Rixiang Huang
- Department of Geology, Baylor University , One Bear Place #97354 Waco, Texas 76798, United States
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55
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Shang S, Liu Q, Gao J, Zhu Y, Liu J, Wang K, Shao W, Zhang S. Insights into in vitro binding of parecoxib to human serum albumin by spectroscopic methods. J Biochem Mol Toxicol 2014; 28:433-41. [PMID: 24939449 DOI: 10.1002/jbt.21582] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 05/08/2014] [Accepted: 05/13/2014] [Indexed: 11/11/2022]
Abstract
Herein, we report the effect of parecoxib on the structure and function of human serum albumin (HSA) by using fluorescence, circular dichroism (CD), Fourier transforms infrared (FTIR), three-dimensional (3D) fluorescence spectroscopy, and molecular docking techniques. The Stern-Volmer quenching constants K(SV) and the corresponding thermodynamic parameters ΔH, ΔG, and ΔS have been estimated by the fluorescence quenching method. The results indicated that parecoxib binds spontaneously with HSA through van der Waals forces and hydrogen bonds with binding constant of 3.45 × 10(4) M(-1) at 298 K. It can be seen from far-UV CD spectra that the α-helical network of HSA is disrupted and its content decreases from 60.5% to 49.6% at drug:protein = 10:1. Protein tertiary structural alterations induced by parecoxib were also confirmed by FTIR and 3D fluorescence spectroscopy. The molecular docking study indicated that parecoxib is embedded into the hydrophobic pocket of HSA.
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Affiliation(s)
- Shujun Shang
- Department of Anesthesiology, Yantaishan Hospital, Yantai, 264000, Shandong Province, People's Republic of China.
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56
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Liu R, Cheng Z, Jiang X. Comparative studies on the interactions of dihydroartemisinin and artemisinin with bovine serum albumin using spectroscopic methods. LUMINESCENCE 2014; 29:1033-46. [PMID: 24804646 DOI: 10.1002/bio.2655] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Revised: 12/11/2013] [Accepted: 01/24/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Rong Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province; China West Normal University; Nanchong 637002 China
| | - Zhengjun Cheng
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province; China West Normal University; Nanchong 637002 China
| | - Xiaohui Jiang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province; China West Normal University; Nanchong 637002 China
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57
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Magnes C, Fauland A, Gander E, Narath S, Ratzer M, Eisenberg T, Madeo F, Pieber T, Sinner F. Polyamines in biological samples: rapid and robust quantification by solid-phase extraction online-coupled to liquid chromatography-tandem mass spectrometry. J Chromatogr A 2014; 1331:44-51. [PMID: 24485539 PMCID: PMC3991419 DOI: 10.1016/j.chroma.2013.12.061] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 12/18/2013] [Accepted: 12/19/2013] [Indexed: 02/07/2023]
Abstract
Polyamines are ubiquitous active biogenic amines which contribute to basic cellular functions. Hence, their quantification in samples of diverse biological origins is essential for understanding how they function, especially in disease-relevant conditions. We present here a robust, high-throughput solid-phase extraction online coupled to a liquid chromatography-tandem mass spectrometry (SPE-LC/MS/MS) approach for the simultaneous quantification of eight polyamines in various biological samples. The polyamines include 1,3-diaminopropane, putrescine, cadaverin, N-acetyl-putrescine, spermidine, spermine, N(1)-acetyl-spermine, and l-ornithine. The novelty of the work is the use of two SPE columns online coupled to LC/MS/MS, which minimizes the sample pretreatment to a single derivatization step. The analysis is complete within 4min, making the method highly suitable for routine clinical analysis and high throughput screenings. The method was fully validated with serum samples. Dynamic ranges were 0.03 to 15μg/ml for ornithine and 1 to 500ng/ml for other polyamines, which cover physiological concentrations in serum samples. Lower limits of quantification (LLoQ) were found to be between 0.1 and 5ng/ml. As a proof of concept, we investigated gender differences in polyamine levels by analyzing the serum levels of 102 subjects.
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Affiliation(s)
- Christoph Magnes
- HEALTH—Institute for Biomedicine and Health Sciences, Joanneum Research, Forschungsgesellschaft m.b.H., Graz, Austria
| | - Alexander Fauland
- HEALTH—Institute for Biomedicine and Health Sciences, Joanneum Research, Forschungsgesellschaft m.b.H., Graz, Austria
| | - Edgar Gander
- HEALTH—Institute for Biomedicine and Health Sciences, Joanneum Research, Forschungsgesellschaft m.b.H., Graz, Austria
| | - Sophie Narath
- HEALTH—Institute for Biomedicine and Health Sciences, Joanneum Research, Forschungsgesellschaft m.b.H., Graz, Austria
| | - Maria Ratzer
- HEALTH—Institute for Biomedicine and Health Sciences, Joanneum Research, Forschungsgesellschaft m.b.H., Graz, Austria
| | - Tobias Eisenberg
- Institute of Molecular Biosciences, Karl-Franzens-University of Graz, Graz, Austria
| | - Frank Madeo
- Institute of Molecular Biosciences, Karl-Franzens-University of Graz, Graz, Austria
| | - Thomas Pieber
- HEALTH—Institute for Biomedicine and Health Sciences, Joanneum Research, Forschungsgesellschaft m.b.H., Graz, Austria
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Frank Sinner
- HEALTH—Institute for Biomedicine and Health Sciences, Joanneum Research, Forschungsgesellschaft m.b.H., Graz, Austria
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Medical University of Graz, Graz, Austria
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58
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59
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Encapsulation of biogenic and synthetic polyamines by nanoparticles PEG and mPEG-anthracene. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 130:30-9. [DOI: 10.1016/j.jphotobiol.2013.10.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 10/20/2013] [Accepted: 10/22/2013] [Indexed: 11/19/2022]
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60
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Li X, Wang G, Chen D, Lu Y. Binding of ascorbic acid and α-tocopherol to bovine serum albumin: a comparative study. ACTA ACUST UNITED AC 2014; 10:326-37. [DOI: 10.1039/c3mb70373h] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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61
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Cheng Z, Liu R, Jiang X. Spectroscopic studies on the interaction between tetrandrine and two serum albumins by chemometrics methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 115:92-105. [PMID: 23831983 DOI: 10.1016/j.saa.2013.06.007] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Revised: 05/31/2013] [Accepted: 06/04/2013] [Indexed: 06/02/2023]
Abstract
The binding interactions of tetrandrine (TETD) with bovine serum albumin (BSA) and human serum albumin (HSA) have been investigated by spectroscopic methods. These experimental data were further analyzed using multivariate curve resolution-alternating least squares (MCR-ALS) method, and the concentration profiles and pure spectra for three species (BSA/HSA, TETD and TETD-BSA/HSA) existed in the interaction procedure, as well as, the apparent equilibrium constants Kapp were evaluated. The binding sites number n and the binding constants K were obtained at various temperatures. The binding distance between TETD and BSA/HSA was 1.455/1.451nm. The site markers competitive experiments indicated that TETD primarily bound to the tryptophan residue of BSA/HSA within site I. The thermodynamic parameters (ΔG, ΔH and ΔS) calculated on the basis of different temperatures revealed that the binding of TETD-BSA was mainly depended on the hydrophobic interaction strongly and electrostatic interaction, and yet the binding of TETD-HSA was strongly relied on the hydrophobic interaction. The results of synchronous fluorescence, 3D fluorescence and FT-IR spectra show that the conformation of proteins has altered in the presence of TETD. In addition, the effect of some common ions on the binding constants between TETD and proteins were also discussed.
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Affiliation(s)
- Zhengjun Cheng
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637002, China.
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62
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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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63
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Li X, Chen D, Wang G, Lu Y. Study of interaction between human serum albumin and three antioxidants: ascorbic acid, α-tocopherol, and proanthocyanidins. Eur J Med Chem 2013; 70:22-36. [PMID: 24140914 DOI: 10.1016/j.ejmech.2013.09.033] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 07/23/2013] [Accepted: 09/15/2013] [Indexed: 11/18/2022]
Abstract
Ascorbic acid, α-tocopherol and proanthocyanidins are three classic dietary antioxidants. In this study, the interaction between the three antioxidants and human serum albumin (HSA) was investigated by several spectroscopic techniques. Experimental results proved that the three antioxidants quench the fluorescence of HSA through a static (proanthocyanidins) or static-dynamic combined quenching mechanism (ascorbic acid and α-tocopherol). Thermodynamic investigations revealed that the combination between ascorbic acid or proanthocyanidins and HSA was driven mainly by electrostatic interaction, and the hydrophobic interactions play a major role for α-tocopherol-HSA association. Binding site I was found to be the primary binding site for ascorbic acid and proanthocyanidins, and site II for α-tocopherol. Additionally, the three antioxidants may induce conformational and microenvironmental changes of HSA.
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Affiliation(s)
- Xiangrong Li
- School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China; Department of Chemistry, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China.
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64
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Vignesh G, Sugumar K, Arunachalam S, Vignesh S, Arthur James R. A comparative study on the binding of single and double chain surfactant-cobalt(III) complexes with bovine serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 113:415-422. [PMID: 23747382 DOI: 10.1016/j.saa.2013.04.123] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 04/25/2013] [Accepted: 04/29/2013] [Indexed: 06/02/2023]
Abstract
The comparative binding effect of single and double aliphatic chain containing surfactant-cobalt(III) complexes cis-[Co(bpy)2(DA)2](ClO4)3·2H2O (1), cis-[Co(bpy)2(DA)Cl](ClO4)2·2H2O (2), cis-[Co(phen)2(CA)2](ClO4)3·2H2O (3), and cis-[Co(phen)2(CA)Cl](ClO4)2·2H2O (4) with bovine serum albumin (BSA) under physiological condition was analyzed by steady state, time resolved fluorescence, synchronous, three-dimensional fluorescence, UV-Visible absorption and circular dichroism spectroscopic techniques. The results show that these complexes cause the fluorescence quenching of BSA through a static mechanism. The binding constants (Kb) and the number of binding sites were calculated and binding constant values are found in the range of 10(4)-10(5) M(-1). The results indicate that compared to single chain complex, double chain surfactant-cobalt(III) complex interacts strongly with BSA. Also the sign of thermodynamic parameters (ΔG°, ΔH°, and ΔS°) indicate that all the complexes interact with BSA through hydrophobic force. The binding distance (r) between complexes and BSA was calculated using Förster non-radiation energy transfer theory and found to be less than 7 nm. The results of synchronous, three dimensional fluorescence and circular dichroism spectroscopic methods indicate that the double chain surfactant-cobalt(III) complexes changed the conformation of the protein considerably than the respective single chain surfactant-cobalt(III) complexes. Antimicrobial studies of the complexes showed good activities against pathogenic microorganisms.
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Affiliation(s)
- G Vignesh
- School of Chemistry, Bharathidasan University, Tiruchirapalli 620 024, Tamil Nadu, India
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65
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Wu G, Jiang X, Zhou L, Yang L, Wang Y, Xia G, Chen Z, Duan M. The bilateral action between EQ14-2-14 gemini surfactant and bovine serum albumin by DPI and 1H NMR. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.04.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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66
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Vijayanathan V, Agostinelli E, Thomas T, Thomas TJ. Innovative approaches to the use of polyamines for DNA nanoparticle preparation for gene therapy. Amino Acids 2013; 46:499-509. [DOI: 10.1007/s00726-013-1549-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 06/26/2013] [Indexed: 12/19/2022]
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67
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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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68
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Ding F, Peng W, Diao JX, Zhang L, Sun Y. Characteristics and essences upon conjugation of imidacloprid with two model proteins. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:4497-4505. [PMID: 23530963 DOI: 10.1021/jf3048065] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Since the introduction of imidacloprid in the early 1990s, it has become one of the most widely applied insecticides, and currently represents about 20% of the global pesticide market (Tomizawa, M.; Casida, J. E. J. Agric. Food Chem 2011, 59, 2883-2886). In the context of this study, our major aim was to comprehensively scrutinize the nature of imidacloprid with two typical model proteins, lysozyme and albumin, by means of circular dichroism (CD), steady-state and time-resolved fluorescence, and molecular modeling at the molecular level. Far-UV CD verified that the spatial structure of both proteins was altered with a distinct reduction of α helix in the presence of imidacloprid suggesting unfolding of the protein (i.e., protein damage). The data of steady-state and time-resolved fluorescence showed that the conjugation of imidacloprid with lysozyme yielded quenching by a static mechanism (KSV = 3.841 × 10(4) M(-1)), while combined static and dynamic properties existed for albumin tryptophan (Trp)-214 fluorescence. Molecular modeling simulations displayed that the imidacloprid binding site was near to the Trp-62 and Trp-63 residues of lysozyme, and it was located at the subdomain IIA (warfarin-azapropazone site) of albumin. Furthermore, the primary forces between protein and imidacloprid are hydrogen bond, hydrophobic, and π-π interactions, but the affinity of lysozyme with imidacloprid is much lower than albumin, probably because the affinity distinctions stem from discrepancy in the three-dimensional structure of the two globular proteins. The results presented here will help to further understand the credible mechanism by which the toxicological implication of neonicotinoid insecticides is palliated by carrier protein.
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Affiliation(s)
- Fei Ding
- Department of Chemistry, China Agricultural University, Beijing 100193, China
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69
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Yang X, Ye Z, Yuan Y, Zheng Z, Shi J, Ying Y, Huang P. Insights into the binding of paclitaxel to human serum albumin: multispectroscopic studies. LUMINESCENCE 2013; 28:427-34. [PMID: 23674486 DOI: 10.1002/bio.2522] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 01/22/2013] [Accepted: 03/15/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Xiuli Yang
- Tong De Hospital of Zhejiang Province; Zhejiang; Hangzhou; 310058; China
| | - Zuowu Ye
- Tong De Hospital of Zhejiang Province; Zhejiang; Hangzhou; 310058; China
| | - Yong Yuan
- Tong De Hospital of Zhejiang Province; Zhejiang; Hangzhou; 310058; China
| | - Zaoqian Zheng
- Tong De Hospital of Zhejiang Province; Zhejiang; Hangzhou; 310058; China
| | - Jiana Shi
- Tong De Hospital of Zhejiang Province; Zhejiang; Hangzhou; 310058; China
| | - Yin Ying
- Tong De Hospital of Zhejiang Province; Zhejiang; Hangzhou; 310058; China
| | - Ping Huang
- Tong De Hospital of Zhejiang Province; Zhejiang; Hangzhou; 310058; China
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70
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Lin Y, Jiao G, Sun G, Zhang L, Wang S, Liu H, Li Z. Binding of teicoplanin and vancomycin to bovine serum albuminin vitro: a multispectroscopic approach and molecular modeling. LUMINESCENCE 2013; 29:109-17. [PMID: 23606567 DOI: 10.1002/bio.2512] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 03/03/2013] [Accepted: 03/04/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Yongxin Lin
- Department of Orthopedics; the First Affiliated Hospital of Jinan University; Guangzhou 510630 China
| | - Genlong Jiao
- Department of Orthopedics; the First Affiliated Hospital of Jinan University; Guangzhou 510630 China
| | - Guodong Sun
- Department of Orthopedics; the First Affiliated Hospital of Jinan University; Guangzhou 510630 China
| | - Lili Zhang
- School of Pharmacy; China Pharmaceutical University; Nanjing 211198 China
| | - Shilong Wang
- School of Pharmacy; China Pharmaceutical University; Nanjing 211198 China
| | - Hanchao Liu
- Hach company; Scitech Tower Beijing 100004 China
| | - Zhizhong Li
- Department of Orthopedics; the First Affiliated Hospital of Jinan University; Guangzhou 510630 China
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71
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Shen H, Gu Z, Jian K, Qi J. In vitro study on the binding of gemcitabine to bovine serum albumin. J Pharm Biomed Anal 2013; 75:86-93. [DOI: 10.1016/j.jpba.2012.11.021] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2012] [Revised: 11/15/2012] [Accepted: 11/15/2012] [Indexed: 11/26/2022]
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72
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Cheng ZJ, Zhao HM, Xu QY, Liu R. Investigation of the interaction between indigotin and two serum albumins by spectroscopic approaches. J Pharm Anal 2013; 3:257-269. [PMID: 29403826 PMCID: PMC5760986 DOI: 10.1016/j.jpha.2013.01.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Accepted: 01/08/2013] [Indexed: 11/07/2022] Open
Abstract
The binding characteristics of indigotin with human serum albumin (HSA) and bovine serum albumin (BSA) have been investigated by various spectroscopic techniques. Spectroscopic analysis revealed that the quenching mechanism between indigotin and HSA/BSA belonged to the static quenching. The displacement experiments suggested that indigotin primarily bound to tryptophan residues on proteins within site I. The thermodynamic parameters indicated that the binding of indigotin–HSA/BSA mainly depended on the hydrophobic interaction. The binding distance of indigotin to HSA/BSA was evaluated. The results by synchronous fluorescence, three-dimensional fluorescence, Fourier Transform Infrared spectroscopy (FT-IR) and circular dichroism (CD) spectra showed that the conformation of proteins altered in the presence of indigotin.
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Affiliation(s)
- Zheng-Jun Cheng
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637009, China
| | - Hong-Mei Zhao
- Nanchong Petrochemical School, Nanchong 637000, China
| | - Qian-Yong Xu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637009, China
| | - Rong Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637009, China
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73
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Kamtekar N, Pandey A, Agrawal N, Pissurlenkar RRS, Borana M, Ahmad B. Interaction of multimicrobial synthetic inhibitor 1,2-bis(2-benzimidazolyl)-1,2-ethanediol with serum albumin: spectroscopic and computational studies. PLoS One 2013; 8:e53499. [PMID: 23308237 PMCID: PMC3537617 DOI: 10.1371/journal.pone.0053499] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 11/30/2012] [Indexed: 02/02/2023] Open
Abstract
The molecule, 1,2-Bis(2-benzimidazolyl)-1,2-ethanediol (BBE) is known to act as a selective inhibitor of poliovirus, rhinovirus, Candida albicans, several bacterial species, and is easily synthesized by Phillips reaction. The interaction of BBE with BSA and the effects of its binding on the conformation and unfolding/refolding pathways of the protein were investigated using multispectroscopic techniques and molecular modeling. The binding studies indicate that BSA has one high affinity BBE binding site with association constant 6.02±0.05×10(4) M(-1) at 298 K. By measuring binding at different temperatures, we determined the changes in enthalpy (ΔH = -15.13±2.15 kJ mol(-1)), entropy (ΔS = 40.87±7.25 J mol(-1) K(-1)) and free energy (ΔG( = )26.78±1.02) of interaction, which indicate that the binding was spontaneous and both enthalpically and entropically driven. Based on molecular modeling and thermodynamic parameters, we proposed that the complex formation involved mainly hydrophilic interaction such as hydrogen bonding between hydroxyl groups of ethane-1,2-diol fragment with Tyr410 and benzimidazole sp(2) nitrogen atom with Ser488 and hydrophobic interaction between phenyl ring of one benzimidazole of the ligand and hydrophobic residues namely, Ile387, Cys391, Phe402, Val432 and Cys437. The sequential unfolding mechanism of BSA, site-specific marker displacement experiments and molecular modeling showed that the molecule preferably binds in subdomain IIIA. The BBE binding to BSA was found to cause both secondary and tertiary structural alterations in the protein as studied by intrinsic fluorescence, near-UV and far-UV circular dichroism results. The unfolding/refolding study showed that BBE stabilized native to intermediate states (N⇌I) transition of the protein by ∼2 kJ mol(-1) without affecting the intermediate to unfolded states (I⇌U) transition and general mechanism of unfolding of BSA.
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Affiliation(s)
- Nayana Kamtekar
- UM-DAE Centre for Excellence in Basic Sciences, University of Mumbai, Kalina Campus, Mumbai, India
| | - Anita Pandey
- UM-DAE Centre for Excellence in Basic Sciences, University of Mumbai, Kalina Campus, Mumbai, India
| | - Neeraj Agrawal
- UM-DAE Centre for Excellence in Basic Sciences, University of Mumbai, Kalina Campus, Mumbai, India
| | | | - Mohanish Borana
- UM-DAE Centre for Excellence in Basic Sciences, University of Mumbai, Kalina Campus, Mumbai, India
| | - Basir Ahmad
- UM-DAE Centre for Excellence in Basic Sciences, University of Mumbai, Kalina Campus, Mumbai, India
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74
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Zhong D, Jiao Y, Zhang Y, Zhang W, Li N, Zuo Q, Wang Q, Xue W, Liu Z. Effects of the gene carrier polyethyleneimines on structure and function of blood components. Biomaterials 2013; 34:294-305. [DOI: 10.1016/j.biomaterials.2012.09.060] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Accepted: 09/25/2012] [Indexed: 01/16/2023]
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75
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Probing the Interaction of Mutiwalled Carbon Nanotubes and Catalase: Mutispectroscopic Approach. J Biochem Mol Toxicol 2012; 26:493-8. [DOI: 10.1002/jbt.21454] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 09/19/2012] [Accepted: 10/07/2012] [Indexed: 12/20/2022]
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76
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Yang Z, Tang R, Zhang Z. Synthesis and luminescent properties of Tb(III) complex with a novel pyrazolone ligand and its interaction with bovine serum albumin. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.07.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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77
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Mandeville JS, Bourassa P, Tajmir-Riahi HA. Probing the Binding of Cationic Lipids with Dendrimers. Biomacromolecules 2012; 14:142-52. [DOI: 10.1021/bm301501y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- J. S. Mandeville
- Département de Chimie-Biologie, Université du Québec à Trois-Rivières, C. P. 500, Trois-Rivières (Québec), G9A 5H7, Canada
| | - P. Bourassa
- Département de Chimie-Biologie, Université du Québec à Trois-Rivières, C. P. 500, Trois-Rivières (Québec), G9A 5H7, Canada
| | - H. A. Tajmir-Riahi
- Département de Chimie-Biologie, Université du Québec à Trois-Rivières, C. P. 500, Trois-Rivières (Québec), G9A 5H7, Canada
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78
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Paris C, Moreau V, Deglane G, Karim L, Couturier B, Bonnet ME, Kedinger V, Messmer M, Bolcato-Bellemin AL, Behr JP, Erbacher P, Lenne-Samuel N. Conjugating phosphospermines to siRNAs for improved stability in serum, intracellular delivery and RNAi-mediated gene silencing. Mol Pharm 2012; 9:3464-75. [PMID: 23148419 DOI: 10.1021/mp300278b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
siRNAs are usually formulated with cationic polymers or lipids to form supramolecular particles capable of binding and crossing the negatively charged cell membrane. However, particles hardly diffuse through tissues when administered in vivo. We therefore are developing cationic siRNAs, composed of an antisense sequence annealed to an oligophosphospermine-conjugated sense strand. Cationic siRNAs have been previously shown to display gene silencing activity in human cell line (Nothisen et al. J. Am. Chem. Soc.2009). We have improved the synthesis, purification and characterization of oligospermine-oligoribonucleotide conjugates which provide cationic siRNAs with enhanced biological activity. We show data supporting their carrier-free intracellular delivery in a molecular, soluble state. Additional results on the relationship between global charge, uptake and silencing activity confirm the requirement for an overall positive charge of the conjugated siRNA in order to enter cells. Importantly, conjugated siRNAs made of natural phosphodiester nucleotides are protected from nuclease degradation by the oligophosphospermine moiety, operate through the RNAi mechanism and mediate specific gene silencing at submicromolar concentration in the presence of serum.
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Affiliation(s)
- Clément Paris
- Polyplus-tranfection SA, Bioparc, Boulevard S. Brant, Illkirch, 67401, France
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79
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Probing the binding sites of antibiotic drugs doxorubicin and N-(trifluoroacetyl) doxorubicin with human and bovine serum albumins. PLoS One 2012; 7:e43814. [PMID: 22937101 PMCID: PMC3427208 DOI: 10.1371/journal.pone.0043814] [Citation(s) in RCA: 156] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Accepted: 07/26/2012] [Indexed: 11/19/2022] Open
Abstract
We located the binding sites of doxorubicin (DOX) and N-(trifluoroacetyl) doxorubicin (FDOX) with bovine serum albumin (BSA) and human serum albumins (HSA) at physiological conditions, using constant protein concentration and various drug contents. FTIR, CD and fluorescence spectroscopic methods as well as molecular modeling were used to analyse drug binding sites, the binding constant and the effect of drug complexation on BSA and HSA stability and conformations. Structural analysis showed that doxorubicin and N-(trifluoroacetyl) doxorubicin bind strongly to BSA and HSA via hydrophilic and hydrophobic contacts with overall binding constants of KDOX-BSA = 7.8 (±0.7)×103 M−1, KFDOX-BSA = 4.8 (±0.5)×103 M−1 and KDOX-HSA = 1.1 (±0.3)×104 M−1, KFDOX-HSA = 8.3 (±0.6)×103 M−1. The number of bound drug molecules per protein is 1.5 (DOX-BSA), 1.3 (FDOX-BSA) 1.5 (DOX-HSA), 0.9 (FDOX-HSA) in these drug-protein complexes. Docking studies showed the participation of several amino acids in drug-protein complexation, which stabilized by H-bonding systems. The order of drug-protein binding is DOX-HSA > FDOX-HSA > DOX-BSA > FDOX>BSA. Drug complexation alters protein conformation by a major reduction of α-helix from 63% (free BSA) to 47–44% (drug-complex) and 57% (free HSA) to 51–40% (drug-complex) inducing a partial protein destabilization. Doxorubicin and its derivative can be transported by BSA and HSA in vitro.
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80
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Cheng Z. Comparative studies on the interactions of honokiol and magnolol with human serum albumin. J Pharm Biomed Anal 2012; 66:240-51. [DOI: 10.1016/j.jpba.2012.03.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 03/06/2012] [Accepted: 03/07/2012] [Indexed: 11/25/2022]
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81
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Cheng Z. Interaction of tetramethylpyrazine with two serum albumins by a hybrid spectroscopic method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 93:321-330. [PMID: 22484270 DOI: 10.1016/j.saa.2012.03.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 03/06/2012] [Accepted: 03/09/2012] [Indexed: 05/31/2023]
Abstract
The interactions of tetramethylpyrazine (TMPZ) with bovine serum albumin (BSA) and human serum albumin (HSA) have been investigated by various spectroscopic techniques. Fluorescence tests showed that TMPZ could bind to BSA/HSA to form complexes. The binding constants of TMPZ-BSA and TMPZ-HSA complexes were observed to be 1.442 × 10(4) and 3.302 × 10(4)M(-1) at 298K, respectively. The thermodynamic parameters (ΔG, ΔH and ΔS) calculated on the basis of different temperatures revealed that the binding of TMPZ-HSA was mainly depended on hydrophobic interaction, and yet the binding of TMPZ-BSA might involve hydrophobic interaction strongly and electrostatic interaction. The results of synchronous fluorescence, three-dimensional fluorescence, UV-vis absorption, FT-IR and CD spectra showed that the conformations of both BSA and HSA altered with the addition of TMPZ. The binding average distance between TMPZ and BSA/HSA was evaluated according to Föster non-radioactive energy transfer theory. In addition, with the aid of site markers (such as, phenylbutazone, ibuprofen and digitoxin), TMPZ primarily bound to tryptophan residues of BSA/HSA within site I (sub-domain II A).
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Affiliation(s)
- Zhengjun Cheng
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637002, China.
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82
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Belatik A, Hotchandani S, Carpentier R, Tajmir-Riahi HA. Locating the binding sites of Pb(II) ion with human and bovine serum albumins. PLoS One 2012; 7:e36723. [PMID: 22574219 PMCID: PMC3344939 DOI: 10.1371/journal.pone.0036723] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Accepted: 04/05/2012] [Indexed: 11/17/2022] Open
Abstract
Lead is a potent environmental toxin that has accumulated above its natural level as a result of human activity. Pb cation shows major affinity towards protein complexation and it has been used as modulator of protein-membrane interactions. We located the binding sites of Pb(II) with human serum (HSA) and bovine serum albumins (BSA) at physiological conditions, using constant protein concentration and various Pb contents. FTIR, UV-visible, CD, fluorescence and X-ray photoelectron spectroscopic (XPS) methods were used to analyse Pb binding sites, the binding constant and the effect of metal ion complexation on HSA and BSA stability and conformations. Structural analysis showed that Pb binds strongly to HSA and BSA via hydrophilic contacts with overall binding constants of K(Pb-HSA) = 8.2 (±0.8)×10(4) M(-1) and K(Pb-BSA) = 7.5 (±0.7)×10(4) M(-1). The number of bound Pb cation per protein is 0.7 per HSA and BSA complexes. XPS located the binding sites of Pb cation with protein N and O atoms. Pb complexation alters protein conformation by a major reduction of α-helix from 57% (free HSA) to 48% (metal-complex) and 63% (free BSA) to 52% (metal-complex) inducing a partial protein destabilization.
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Affiliation(s)
- Ahmed Belatik
- Département de Chimie-Biologie, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
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83
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Mandeville JS, Bourassa P, Thomas TJ, Tajmir-Riahi HA. Biogenic and synthetic polyamines bind cationic dendrimers. PLoS One 2012; 7:e36087. [PMID: 22558341 PMCID: PMC3338638 DOI: 10.1371/journal.pone.0036087] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Accepted: 03/26/2012] [Indexed: 11/19/2022] Open
Abstract
Biogenic polyamines are essential for cell growth and differentiation, while polyamine analogues exert antitumor activity in multiple experimental model systems, including breast and lung cancer. Dendrimers are widely used for drug delivery in vitro and in vivo. We report the bindings of biogenic polyamines, spermine (spm), and spermidine (spmd), and their synthetic analogues, 3,7,11,15-tetrazaheptadecane.4HCl (BE-333) and 3,7,11,15,19-pentazahenicosane.5HCl (BE-3333) to dendrimers of different compositions, mPEG-PAMAM (G3), mPEG-PAMAM (G4) and PAMAM (G4). FTIR and UV-visible spectroscopic methods as well as molecular modeling were used to analyze polyamine binding mode, the binding constant and the effects of polyamine complexation on dendrimer stability and conformation. Structural analysis showed that polyamines bound dendrimers through both hydrophobic and hydrophilic contacts with overall binding constants of K(spm-mPEG-G3) = 7.6 × 10(4) M(-1), K(spm-mPEG-PAMAM-G4) = 4.6 × 10(4) M(-1), K(spm-PAMAM-G4) = 6.6 × 10(4) M(-1), K(spmd-mPEG-G3) = 1.0 × 10(5) M(-1), K(spmd-mPEG-PAMAM-G4) = 5.5 × 10(4) M(-1), K(spmd-PAMAM-G4) = 9.2 × 10(4) M(-1), K(BE-333-mPEG-G3) = 4.2 × 10(4) M(-1), K(Be-333-mPEG-PAMAM-G4) = 3.2 × 10(4) M(-1), K(BE-333-PAMAM-G4) = 3.6 × 10(4) M(-1), K(BE-3333-mPEG-G3) = 2.2 × 10(4) M(-1), K(Be-3333-mPEG-PAMAM-G4) = 2.4 × 10(4) M(-1), K(BE-3333-PAMAM-G4) = 2.3 × 10(4) M(-1). Biogenic polyamines showed stronger affinity toward dendrimers than those of synthetic polyamines, while weaker interaction was observed as polyamine cationic charges increased. The free binding energies calculated from docking studies were: -3.2 (spermine), -3.5 (spermidine) and -3.03 (BE-3333) kcal/mol, with the following order of binding affinity: spermidine-PAMAM-G-4>spermine-PAMMAM-G4>BE-3333-PAMAM-G4 consistent with spectroscopic data. Our results suggest that dendrimers can act as carrier vehicles for delivering antitumor polyamine analogues to target tissues.
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Affiliation(s)
- Jean-Sebastian Mandeville
- Département de Chimie-Biologie, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Phillipe Bourassa
- Département de Chimie-Biologie, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Thekkumkattil John Thomas
- Department of Medicine, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, New Brunswick, New Jersey, United States of America
- The Cancer Institute of New Jersey, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, New Brunswick, New Jersey, United States of America
| | - Heidar-Ali Tajmir-Riahi
- Département de Chimie-Biologie, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
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84
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Belatik A, Hotchandani S, Bariyanga J, Tajmir-Riahi H. Binding sites of retinol and retinoic acid with serum albumins. Eur J Med Chem 2012; 48:114-23. [DOI: 10.1016/j.ejmech.2011.12.002] [Citation(s) in RCA: 116] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 11/27/2011] [Accepted: 12/02/2011] [Indexed: 10/14/2022]
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85
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Abdi K, Nafisi S, Manouchehri F, Bonsaii M, Khalaj A. Interaction of 5-Fluorouracil and its derivatives with bovine serum albumin. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2012; 107:20-6. [DOI: 10.1016/j.jphotobiol.2011.11.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 11/14/2011] [Accepted: 11/17/2011] [Indexed: 01/18/2023]
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86
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Deng F, Dong C, Liu Y. Characterization of the interaction between nitrofurazone and human serum albumin by spectroscopic and molecular modeling methods. MOLECULAR BIOSYSTEMS 2012; 8:1446-51. [DOI: 10.1039/c2mb05467a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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87
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Jin XL, Wei X, Qi FM, Yu SS, Zhou B, Bai S. Characterization of hydroxycinnamic acid derivatives binding to bovine serum albumin. Org Biomol Chem 2012; 10:3424-31. [DOI: 10.1039/c2ob25237f] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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88
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Ju P, Fan H, Liu T, Cui L, Ai S, Wu X. Investigations on the interaction between cuprous oxide nanocubes and bovine serum albumin with comprehensive spectroscopic methods. Biol Trace Elem Res 2011; 144:1405-18. [PMID: 21625917 DOI: 10.1007/s12011-011-9090-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Accepted: 05/17/2011] [Indexed: 10/18/2022]
Abstract
The interaction between cuprous oxide (Cu(2)O) nanocubes and bovine serum albumin (BSA) was investigated from a spectroscopic angle under simulative physiological conditions. Under pH 7.4, Cu(2)O could effectively quench the intrinsic fluorescence of BSA via static quenching. The apparent binding constant (K(A)) was 3.23, 1.91, and 1.20 × 10(4) M(-1) at 298, 304, and 310 K, respectively, and the number of binding sites was 1.05. According to the Van't Hoff equation, the thermodynamic parameters (ΔH° = -63.39 kJ mol(-1), ΔS° = -126.45 J mol(-1) K(-1)) indicated that hydrogen bonds and van der Waals forces played a major role in stabilizing the BSA-Cu(2)O complex. Besides, the average binding distance (r(0) = 2.76 nm) and the critical energy transfer distance (R(0) = 2.35 nm) between Cu(2)O and BSA were also evaluated according to Förster's non-radioactive energy transfer theory. Furthermore, UV-visible and circular dichroism results showed that the addition of Cu(2)O changed the secondary structure of BSA and led to a decrease in α-helix. All results showed that BSA underwent substantial conformational changes induced by Cu(2)O, which can be very helpful in the study of nanomaterials in the application of biomaterials.
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Affiliation(s)
- Peng Ju
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China
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89
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Essemine J, Hasni I, Carpentier R, Thomas T, Tajmir-Riahi H. Binding of biogenic and synthetic polyamines to β-lactoglobulin. Int J Biol Macromol 2011; 49:201-9. [DOI: 10.1016/j.ijbiomac.2011.04.016] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Revised: 04/20/2011] [Accepted: 04/22/2011] [Indexed: 01/08/2023]
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90
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Charak S, Jangir DK, Tyagi G, Mehrotra R. Interaction studies of Epirubicin with DNA using spectroscopic techniques. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.06.013] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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91
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Wu H, Zhao X, Wang P, Dai Z, Zou X. Electrochemical site marker competitive method for probing the binding site and binding mode between bovine serum albumin and alizarin red S. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.01.098] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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92
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Schuster I, Bernhardt R. Interactions of natural polyamines with mammalian proteins. Biomol Concepts 2011; 2:79-94. [DOI: 10.1515/bmc.2011.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
AbstractThe ubiquitously expressed natural polyamines putrescine, spermidine, and spermine are small, flexible cationic compounds that exert pleiotropic actions on various regulatory systems and, accordingly, are essentially involved in diverse life functions. These roles of polyamines result from their capability to interact with negatively charged regions of all major classes of biomolecules, which might act in response by changing their structures and functions. The present review deals with polyamine-protein interactions, thereby focusing on mammalian proteins. We discuss the various modes in which polyamines can interact with proteins, describe major types of affected functions illustrated by representative examples of involved proteins, and support information with respective structural evidence from elucidated three-dimensional structures. A specific focus is put on polyamine interactions at protein surfaces that can modulate the aggregation of proteins to organized structural networks as well as to toxic aggregates and, moreover, can play a role in important transient protein-protein interactions.
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Affiliation(s)
- Inge Schuster
- 1Institute for Theoretical Chemistry, University Vienna, A-1090 Vienna, Austria
| | - Rita Bernhardt
- 2Institute of Biochemistry, Saarland University, Campus B2.2, D-66123 Saarbrücken, Germany
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93
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Schlitt KM, Millen AL, Wetmore SD, Manderville RA. An indole-linked C8-deoxyguanosine nucleoside acts as a fluorescent reporter of Watson-Crick versus Hoogsteen base pairing. Org Biomol Chem 2011; 9:1565-71. [PMID: 21240404 DOI: 10.1039/c0ob00883d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pyrrole- and indole-linked C(8)-deoxyguanosine nucleosides act as fluorescent reporters of H-bonding specificity. Their fluorescence is quenched upon Watson-Crick H-bonding to dC, while Hoogsteen H-bonding to G enhances emission intensity. The indole-linked probe is ∼ 10-fold brighter and shows promise as a fluorescent reporter of Hoogsteen base pairing.
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Affiliation(s)
- Katherine M Schlitt
- Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1
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