51
|
Cheng XX, Fan XY, Jiang FL, Liu Y, Lei KL. Resonance energy transfer, pH-induced folded states and the molecular interaction of human serum albumin and icariin. LUMINESCENCE 2015; 30:1026-33. [PMID: 25669664 DOI: 10.1002/bio.2854] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Revised: 12/15/2014] [Accepted: 12/28/2014] [Indexed: 01/20/2023]
Abstract
Icariin is a flavonol glycoside with a wide range of pharmacological and biological activities. The pharmacological and biological functions of flavonoid compounds mainly originate from their binding to proteins. The mode of interaction of icariin with human serum albumin (HSA) has been characterized by fluorescence spectroscopy and far- and near-UV circular dichroism (CD) spectroscopy under different pH conditions. Fluorescence quenching studies showed that the binding affinity of icariin with HSA in the buffer solution at different pH values is: Ka (pH 4.5) > Ka (pH 3.5) > Ka (pH 9.0) > Ka (pH 7.0). Red-edge excitation shift (REES) studies revealed that pH had an obvious effect on the mobility of the tryptophan microenvironment and the addition of icariin made the REES effect more distinct. The static quenching mechanism and number of binding sites (n ≈ 1) were obtained from fluorescence data at three temperatures (298, 304 and 310 K). Both ∆H(0) < 0 and ∆Ѕ(0) < 0 suggested that hydrogen bonding and van der Waal's interaction were major driving forces in the binding mechanism, and this was also confirmed by the molecular simulation results. The distance r between the donor (HSA) and the acceptor (icariin) was calculated based on Förster non-radiation energy transfer theory. We found that pH had little impact on the energy transfer between HSA and icariin. Far- and near-UV CD spectroscopy studies further indicated the influence of pH on the complexation process and the alteration in the protein conformation upon binding.
Collapse
Affiliation(s)
- Xiao-Xia Cheng
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People's Republic of China.,School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, 430072, People's Republic of China
| | - Xiao-Yang Fan
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People's Republic of China
| | - Feng-Lei Jiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People's Republic of China
| | - Yi Liu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People's Republic of China
| | - Ke-Lin Lei
- School of Chemistry and Food Sciences, Hubei University of Arts and Sciences, Xiangyang, 441053, People's Republic of China
| |
Collapse
|
52
|
Biophysical Interactions of Novel Oleic Acid Conjugate and its Anticancer Potential in HeLa Cells. J Fluoresc 2015; 25:519-25. [DOI: 10.1007/s10895-015-1512-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 01/19/2015] [Indexed: 10/24/2022]
|
53
|
Wu D, Zhai Y, Yan J, Xu K, Wang Q, Li Y, Li H. Binding mechanism of tauroursodeoxycholic acid to human serum albumin: insights from NMR relaxation and docking simulations. RSC Adv 2015. [DOI: 10.1039/c4ra11422a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Binding patterns and structure–affinity relationship of tauroursodeoxycholic acid with human serum albumin were established by NMR methodology and docking simulations.
Collapse
Affiliation(s)
- Di Wu
- College of Chemical Engineering
- Sichuan University
- P. R. China
| | - Yuanming Zhai
- Analytical & Testing Center Sichuan University
- P. R. China
| | - Jin Yan
- College of Chemical Engineering
- Sichuan University
- P. R. China
| | - Kailin Xu
- College of Chemical Engineering
- Sichuan University
- P. R. China
| | - Qing Wang
- College of Chemical Engineering
- Sichuan University
- P. R. China
| | - Yuanzhi Li
- College of Chemical Engineering
- Sichuan University
- P. R. China
| | - Hui Li
- College of Chemical Engineering
- Sichuan University
- P. R. China
| |
Collapse
|
54
|
Li X, Wang S. Binding of glutathione and melatonin to human serum albumin: a comparative study. Colloids Surf B Biointerfaces 2014; 125:96-103. [PMID: 25500326 DOI: 10.1016/j.colsurfb.2014.11.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 10/13/2014] [Accepted: 11/16/2014] [Indexed: 12/20/2022]
Abstract
Binding of glutathione and melatonin to human serum albumin (HSA) has been studied using isothermal titration calorimetry (ITC) in combination with UV-vis absorption spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, and circular dichroism (CD) spectroscopy. Thermodynamic investigations reveal that glutathione/melatonin binds to HSA is driven by favorable enthalpy and unfavorable entropy, and the major driving forces are hydrogen bond and van der Waals force. For glutathione, the interaction is characterized by a high number of binding sites, which suggests that binding occurs by a surface adsorption mechanism that leads to coating of the protein surface. For melatonin, one molecule of melatonin combines with one molecule of HSA and no more melatonin binding to HSA occurs at concentration ranges used in this study. The UV-vis absorption, FT-IR, and CD spectroscopy suggest that glutathione and melatonin may induce conformational and microenvironmental changes of HSA.
Collapse
Affiliation(s)
- Xiangrong Li
- Department of Chemistry, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China.
| | - Su Wang
- General surgery, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| |
Collapse
|
55
|
Lu Z, Qi L, Li GX, Li Q, Sun GH, Xie RZ. In Vitro Characterization for Human Serum Albumin Binding Sorafenib, A Multi Kinase Inhibitor: Spectroscopic Study. J SOLUTION CHEM 2014. [DOI: 10.1007/s10953-014-0256-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
56
|
Zhang W, Xiong X, Wang F, Li L, Zhang Y, Xiao W, Liu Y. Investigation of nitroxoline-human serum albumin interactions by spectroscopic methods. Sci China Chem 2014. [DOI: 10.1007/s11426-014-5230-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
57
|
Kong L, Hu J, Qin D, Yan P. Interaction of Ifosfamide-Loaded Superparamagnetic Iron Oxide Nanoparticles with Human Serum Albumin—A Biophysical Study. J Pharm Innov 2014. [DOI: 10.1007/s12247-014-9199-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
58
|
Wu D, Yan J, Wang J, Wang Q, Li H. Characterisation of interaction between food colourant allura red AC and human serum albumin: multispectroscopic analyses and docking simulations. Food Chem 2014; 170:423-9. [PMID: 25306366 DOI: 10.1016/j.foodchem.2014.08.088] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Revised: 07/16/2014] [Accepted: 08/20/2014] [Indexed: 10/24/2022]
Abstract
Binding interaction of human serum albumin (HSA) with allura red AC, a food colourant, was investigated at the molecular level through fluorescence, ultraviolet-visible, circular dichroism (CD) and Raman spectroscopies, as well as protein-ligand docking studies to better understand the chemical absorption, distribution and transportation of colourants. Results show that allura red AC has the ability to quench the intrinsic fluorescence of HSA through static quenching. The negative values of the thermodynamic parameters ΔG, ΔH, and ΔS indicated that hydrogen bond and van der Waals forces are dominant in the binding between the food colourant and HSA. The CD and Raman spectra showed that the binding of allura red AC to HSA induces the rearrangement of the carbonyl hydrogen-bonding network of polypeptides, which changes the HSA secondary structure. This colourant is bound to HSA in site I, and the binding mode was further analysed with the use of the CDOCKER algorithm in Discovery Studio.
Collapse
Affiliation(s)
- Di Wu
- College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Jin Yan
- College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Jing Wang
- College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Qing Wang
- College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Hui Li
- College of Chemical Engineering, Sichuan University, Chengdu 610065, China.
| |
Collapse
|
59
|
Guo Q, Yuan J, Zeng J. Binding of dihydromyricetin and its metal ion complexes with bovine serum albumin. BIOTECHNOL BIOTEC EQ 2014; 28:333-341. [PMID: 26019518 PMCID: PMC4433903 DOI: 10.1080/13102818.2014.915077] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 11/14/2013] [Indexed: 11/21/2022] Open
Abstract
The binding mechanisms of the interaction of three dihydromyricetin (DMY)–metal complexes (DMY–Cu (II) complex, DMY–Mn (II) complex, DMY–Zn (II) complex) and DMY with bovine serum albumin (BSA) were investigated using fluorescence and ultraviolet spectroscopy at different temperatures. The results indicated some differences in the binding process between different DMY–metal complexes and BSA compared with that of free DMY. All of the complexes and DMY quenched the fluorescence of BSA based on static mode combined with radiationless energy transfer, yet having different binding distance based on the Förster theory. Different DMY–metal complexes can change the binding constants. The binding constants increase for DMY–Cu (II) and DMY–Mn (II) complexes, whereas the opposite is true for the DMY–Zn (II) complex compared to the one with free DMY. The DMY–metal complexes can also affect the types of the interaction. The van der Waals forces and hydrogen bonding may play a major role in the interaction of free DMY with BSA, while for the three complexes, the nature of the binding forces lies in hydrophobic forces and hydrogen bonding based on the thermodynamic parameters.
Collapse
Affiliation(s)
- Qingquan Guo
- School of Chemical Engineering and Light Industry, Guangdong University of Technology , Guangzhou , P.R. China
| | - Juan Yuan
- Guangdong Food Industry Institute , Guangzhou , P.R. China
| | - Jinhua Zeng
- School of Chemical Engineering and Light Industry, Guangdong University of Technology , Guangzhou , P.R. China
| |
Collapse
|
60
|
Zuo H, Tang L, Li S, Huang J. Combined multispectroscopic and molecular docking investigation on the interaction between delphinidin‐3‐
O
‐glucoside and bovine serum albumin. LUMINESCENCE 2014; 30:110-7. [DOI: 10.1002/bio.2704] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 03/05/2014] [Accepted: 04/23/2014] [Indexed: 12/14/2022]
Affiliation(s)
- Huijun Zuo
- School of Life ScienceShandong Normal University Jinan People's Republic of China
| | - Lin Tang
- School of Life ScienceShandong Normal University Jinan People's Republic of China
| | - Shu Li
- School of Life ScienceShandong Normal University Jinan People's Republic of China
| | - Junwei Huang
- School of Life ScienceShandong Normal University Jinan People's Republic of China
| |
Collapse
|
61
|
Kumari M, Maurya JK, Singh UK, Khan AB, Ali M, Singh P, Patel R. Spectroscopic and docking studies on the interaction between pyrrolidinium based ionic liquid and bovine serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 124:349-356. [PMID: 24508873 DOI: 10.1016/j.saa.2014.01.012] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 12/26/2013] [Accepted: 01/05/2014] [Indexed: 06/03/2023]
Abstract
The interaction of synthesized ionic liquid, 1-butyl-1-methyl-2-oxopyrrolidinium bromide (BMOP) and bovine serum albumin (BSA) was investigated using UV-Vis, FT-IR, steady state and time resolved fluorescence measurements and docking studies. Steady state spectra revealed that BMOP strongly quenched the intrinsic fluorescence of BSA through dynamic quenching mechanism. The corresponding thermodynamic parameters; Gibbs free energy change (ΔG), entropy change (ΔS) and enthalpy change (ΔH) showed that the binding process was spontaneous and entropy driven. It is also indicated that hydrophobic forces play a key role in the binding of BMOP to BSA. The synchronous fluorescence spectroscopy reveals that the conformation of BSA changed in the presence of BMOP. The shift in amide I band of FT-IR spectrum of BSA suggested unfolding of the protein secondary structure upon the addition of BMOP. In addition, the molecular modeling study of BSA-BMOP system shows that BMOP binds with BSA at the interface between two sub domains IIA and IIIA, which is located just above the entrance of the binding pocket of IIA through hydrophobic and hydrogen bond interactions in which hydrophobic interaction are dominated.
Collapse
Affiliation(s)
- Meena Kumari
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, India
| | - Jitendra Kumar Maurya
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, India
| | - Upendra Kumar Singh
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, India
| | - Abbul Bashar Khan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, India
| | - Maroof Ali
- Department of Chemistry, Jamia Millia Islamia (A Central University), New Delhi, India
| | - Prashant Singh
- Department of Chemistry, A. R. S. D. College, University of Delhi, Delhi, India
| | - Rajan Patel
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, India.
| |
Collapse
|
62
|
Studies of the interaction between isoimperatorin and human serum albumin by multispectroscopic method: identification of possible binding site of the compound using esterase activity of the protein. ScientificWorldJournal 2013; 2013:305081. [PMID: 24319355 PMCID: PMC3844181 DOI: 10.1155/2013/305081] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 09/10/2013] [Indexed: 11/17/2022] Open
Abstract
Isoimperatorin is one of the main components of Prangos ferulacea as a linear furanocoumarin and used as anti-inflammatory, analgesic, antispasmodic, and anticancer drug. Human serum albumin (HSA) is a principal extracellular protein with a high concentration in blood plasma and carrier for many drugs to different molecular targets. Since the carrying of drug by HSA may affect on its structure and action, we decided to investigate the interaction between HSA and isoimperatorin using fluorescence and UV spectroscopy. Fluorescence data indicated that isoimperatorin quenches the intrinsic fluorescence of the HSA via a static mechanism and hydrophobic interaction play the major role in the drug binding. The binding average distance between isoimperatorin and Trp 214 of HSA was estimated on the basis of the theory of Förster energy transfer. Decrease of protein surface hydrophobicity (PSH) was also documented upon isoimperatorin binding. Furthermore, the synchronous fluorescence spectra show that the microenvironment of the tryptophan residues does not have obvious changes. Site marker compettive and fluorescence experiments revealed that the binding of isoimperatorin to HSA occurred at or near site I. Finally, the binding details between isoimperatorin and HSA were further confirmed by molecular docking and esterase activity inhibition studies which revealed that drug was bound at subdomain IIA.
Collapse
|
63
|
Acharya DP, Sanguansri L, Augustin MA. Binding of resveratrol with sodium caseinate in aqueous solutions. Food Chem 2013; 141:1050-4. [DOI: 10.1016/j.foodchem.2013.03.037] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 03/07/2013] [Accepted: 03/11/2013] [Indexed: 10/27/2022]
|
64
|
Hu Y, Da L. Insights into the selective binding and toxic mechanism of microcystin to catalase. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 121:230-237. [PMID: 24247095 DOI: 10.1016/j.saa.2013.09.078] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 08/22/2013] [Accepted: 09/25/2013] [Indexed: 06/02/2023]
Abstract
Microcystin is a sort of cyclic nonribosomal peptides produced by cyanobacteria. It is cyanotoxin, which can be very toxic for plants and animals including humans. The present study evaluated the interaction of microcystin and catalase, under physiological conditions by means of fluorescence, three-dimensional (3D) fluorescence, circular dichroism (CD), Fourier Transform infrared (FT-IR) spectroscopy, and enzymatic reactionkinetic techniques. The fluorescence data showed that microcystin could bind to catalase to form a complex. The binding process was a spontaneous molecular interaction procedure, in which electrostatic interactions played a major role. Energy transfer and fluorescence studies proved the existence of a static binding process. Additionally, as shown by the three-dimensional fluorescence, CD and FT-IR results, microcystin could lead to conformational and microenvironmental changes of the protein, which may affect the physiological functions of catalase. The work provides important insights into the toxicity mechanism of microcystin in vivo.
Collapse
Affiliation(s)
- Yuandong Hu
- Department of Environmental Science, East China Normal University, Shanghai 200062, China; Department of Landscape, Northeast Forestry University, Harbin 150040, China
| | - Liangjun Da
- Department of Environmental Science, East China Normal University, Shanghai 200062, China.
| |
Collapse
|
65
|
Zhang W, Liang G, Wu L, Tuo X, Wang W, Chen J, Xie P. Why mammals more susceptible to the hepatotoxic microcystins than fish: evidences from plasma and albumin protein binding through equilibrium dialysis. ECOTOXICOLOGY (LONDON, ENGLAND) 2013; 22:1012-1019. [PMID: 23700298 DOI: 10.1007/s10646-013-1086-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/09/2013] [Indexed: 06/02/2023]
Abstract
To elucidate the interspecies variation of susceptibility to microcystins (MCs), fresh plasma and purified albumin from six kinds of mammals and fish were used in toxins-substances binding test. Protein contents in the test plasma were analyzed and the binding characteristics to MCs were compared. Two kinds of widely observed MCs, microcystin-LR (MC-LR) and microcystin-RR (MC-RR) were tested and data were collected through the method of equilibrium dialysis. It was found that total plasma protein and albumin content in mammals were nearly two times and four times higher than that in fish, respectively. In the test range of 0-100 μg/mL, binding rates of fish plasma to MCs were considered significant lower (p < 0.01) than that of mammals. And human plasma demonstrated the highest binding rate in mammals. In all the test species, plasma protein binding rates of MC-RR were significantly higher than MC-LR (p < 0.01). Besides, binding profiles of albumin were acquired under the protein content of 0.67 mg/mL. Human serum albumin demonstrated the highest affinity to MCs throughout the six species and differences among the other five species were considered not significant (p > 0.05). From the view of protein binding, it is concluded that both the variation of plasma protein composition and albumin binding characteristic could influence the existing form of MCs in circulation, change MCs utilization, alter MCs half-life and further contribute to the difference of susceptibility between mammals and fish.
Collapse
Affiliation(s)
- Wei Zhang
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, People's Republic of China.
| | | | | | | | | | | | | |
Collapse
|
66
|
Pal S, Saha C. A review on structure–affinity relationship of dietary flavonoids with serum albumins. J Biomol Struct Dyn 2013; 32:1132-47. [DOI: 10.1080/07391102.2013.811700] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
67
|
Tang L, Zhang D, Xu S, Zuo H, Zuo C, Li Y. Different spectroscopic and molecular modeling studies on the interaction between cyanidin-3-O-glucoside and bovine serum albumin. LUMINESCENCE 2013; 29:168-75. [DOI: 10.1002/bio.2524] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Revised: 01/24/2013] [Accepted: 03/22/2013] [Indexed: 01/25/2023]
Affiliation(s)
- Lin Tang
- Department of Food Science and Engineering; School of Life Science, Shandong Normal University; Jinan People's Republic of China
| | - Dong Zhang
- Department of Food Science and Engineering; School of Life Science, Shandong Normal University; Jinan People's Republic of China
| | - Shanhua Xu
- Department of Food Science and Engineering; School of Life Science, Shandong Normal University; Jinan People's Republic of China
| | - Huijun Zuo
- Department of Food Science and Engineering; School of Life Science, Shandong Normal University; Jinan People's Republic of China
| | - Chunlin Zuo
- Department of Food Science and Engineering; School of Life Science, Shandong Normal University; Jinan People's Republic of China
| | - Yufei Li
- Department of Food Science and Engineering; School of Life Science, Shandong Normal University; Jinan People's Republic of China
| |
Collapse
|
68
|
Cahyana Y, Gordon MH. Interaction of anthocyanins with human serum albumin: influence of pH and chemical structure on binding. Food Chem 2013; 141:2278-85. [PMID: 23870958 DOI: 10.1016/j.foodchem.2013.05.026] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 03/28/2013] [Accepted: 05/09/2013] [Indexed: 12/12/2022]
Abstract
The affinity of anthocyanins for human serum albumin (HSA) was determined by a fluorescence quenching method. The effects of pH and structure of anthocyanins on the binding constants were studied. The constants for binding of anthocyanins to HSA ranged from 1.08×10(5) to 13.2×10(5) M(-1). A hydrophobic effect at acidic pH was shown by the relatively high positive entropy values under the conditions studied. Electrostatic interactions, including hydrogen bonding, contributed to the binding at pH 7.4. The effect of structure of anthocyanins on the affinity was pH-dependent, particularly the effect of additional hydroxyl substituents. Hydroxyl substituents and glycosylation of anthocyanins decreased the affinity for binding to HSA at lower pH (especially pH 4), but increased the strength of binding at pH 7.4. In contrast, methylation of a hydroxyl group enhanced the binding at acidic pH, whilst this substitution reduced the strength of binding at pH 7.4. This paper shows that changes in anthocyanin structure or reductions in pH, which may occur in the region of inflammatory sites, have an effect on the binding of anthocyanins to HSA.
Collapse
Affiliation(s)
- Yana Cahyana
- Hugh Sinclair Unit of Human Nutrition and Institute of Cardiovascular and Metabolic Research, Department of Food and Nutritional Sciences, The University of Reading, Whiteknights, PO Box 226, Reading, Berkshire RG6 6AP, UK
| | | |
Collapse
|
69
|
Atrahimovich D, Vaya J, Khatib S. The effects and mechanism of flavonoid-rePON1 interactions. Structure-activity relationship study. Bioorg Med Chem 2013; 21:3348-55. [PMID: 23623675 DOI: 10.1016/j.bmc.2013.02.055] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 12/31/2012] [Accepted: 02/16/2013] [Indexed: 10/27/2022]
Abstract
Flavonoids are plant phenolic secondary metabolites that are widely distributed in the human diet. These antioxidants have received much attention because of their neuroprotective, cardioprotective, and chemopreventive actions. While a major focus has been on the flavonoids' antioxidant properties, there is an emerging view that many of the potential health benefits of flavonoids and their in vivo metabolites are due to modulatory actions in cells through direct interactions with proteins, and not necessarily due to their antioxidant function. This view relies on the observations that flavonoids are present in the circulation at very low concentrations, which are not sufficient to exert effective antioxidant effects. The enzyme paraoxonase 1 (PON1) is associated with high-density lipoprotein (HDL), and is responsible for many of HDLs' antiatherogenic properties. We previously showed that the flavonoid glabridin binds to rePON1 and affects the enzyme's 3D structure. This interaction protects the enzyme from inhibition by an atherogenic component of the human carotid plaque. Here, we broadened our study to an investigation of the structure-activity relationships (SARs) of 12 flavonoids from different subclasses with rePON1 using Trp-fluorescence quenching, modeling calculations and Cu(2+)-induced low-density lipoprotein (LDL) oxidation methods. Our findings emphasize the 'protein-binding' mechanism by which flavonoids exert their beneficial biological role toward rePON1. Flavonoids' capacity to interact with the enzyme's rePON1 hydrophobic groove mostly dictates their pro/antioxidant behavior.
Collapse
Affiliation(s)
- Dana Atrahimovich
- Oxidative Stress Research Laboratory, MIGAL-Galilee Research Institute, PO Box 831, Kiryat Shmona 11016, Israel
| | | | | |
Collapse
|
70
|
Caruso IP, Vilegas W, Fossey MA, Cornélio ML. Exploring the binding mechanism of Guaijaverin to human serum albumin: fluorescence spectroscopy and computational approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 97:449-455. [PMID: 22820048 DOI: 10.1016/j.saa.2012.06.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 06/22/2012] [Accepted: 06/25/2012] [Indexed: 06/01/2023]
Abstract
The Guaijaverin (Gua) is a polyphenolic substance which exhibits some pharmacological activities such as antibacterial and antioxidant activities. Here we have investigated the binding of Gua with human serum albumin (HSA) at physiological pH 7.0. In this study, the fluorescence spectroscopy, ab initio and molecular modeling calculations were applied. The Stern-Volmer quenching constant (K(SV)) and its modified form (K(a)) were calculated at 298, 303 and 308 K, with the corresponding thermodynamic parameters ΔH, ΔG and ΔS as well. The fluorescence quenching method was used to determine the number of binding sites (n) and binding constants (K(b)) values at 298, 303 and 308 K. The distance between donor (HSA) and acceptor (Gua) was estimated according to fluorescence resonance energy transfer. The geometry optimization of Gua was performed in its ground state by using ab initio DFT/B3LYP functional with a 6-31G(d,p) basis set used in calculations. Molecular modeling calculation indicated that the Gua is located within the hydrophobic pocket of the subdomain IIA of HSA. The theoretical results obtained by molecular modeling were corroborated by fluorescence spectroscopy data.
Collapse
Affiliation(s)
- Icaro P Caruso
- Instituto de Biociências, Letras e Ciências Exatas (IBILCE), UNESP, Rua Cristovão Colombo, 2265, CEP 15054-000, São José do Rio Preto, SP, Brazil.
| | | | | | | |
Collapse
|
71
|
Hosainzadeh A, Gharanfoli M, Saberi M, Chamani J. Probing the interaction of human serum albumin with bilirubin in the presence of aspirin by multi-spectroscopic, molecular modeling and zeta potential techniques: insight on binary and ternary systems. J Biomol Struct Dyn 2012; 29:1013-50. [PMID: 22292958 DOI: 10.1080/073911012010525029] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Here, we report on the effect of aspirin (ASA), on the binding parameters with regard to bilirubin (BR) to human serum albumin (HSA). Two different classes of binding sites were detected. Binding to the first and second classes of the binding sites was dominated by hydrophobic forces in the case of HSA-BR, whereas in the case of the ternary system, binding to the first and second classes of the binding sites was achieved by electrostatic interaction. The binding constant (K(a)) and number of binding site (n) obtained were 1.6 × 10(6)M(-1) and 0.98, respectively, for the primary binding site in the case of HSA-BR, and 3.7 × 10(6)M(-1) and 0.84, respectively, in the presence of ASA (ternary complex) at λ(ex)= 280 nm. The progressive quenching of the protein fluorescence as the BR concentration increased indicated an arrangement of the domain IIA in HSA. Changes in the environment of the aromatic residues were also observed by synchronous fluorescence spectroscopy (SFS). Changes of the secondary structure of HSA involving a decrease of α-helical and β-sheet contents and increased amounts of turns and unordered conformations were mainly found at high concentrations of BR. For the first time, the relationship between the structural parameters of HSA-BR by RLS for determining the critical induced aggregation concentration (C(CIAC)) of BR in the absence and presence of ASA was investigated, and there was a more significant enhancement in the case of the ternary mixture as opposed to the binary one. Changes in the zeta potential of HSA and the HSA-ASA complex in the presence of BR demonstrated a hydrophobic adsorption of this anionic ligand onto the surface of HSA in the binary system as well as both electrostatic and hydrophobic adsorption in the case of the ternary complex. By performing docking experiments, it was found that the acting forces between BR and HSA were mainly hydrophobic > hydrogen bonding > electrostatic interactions, and consequently BR had a long storage time in blood plasma, especially in the presence of ASA. This was due to the electrostatic interaction force between the BR and HSA being stronger in (HSA-ASA) BR than in the HSA-BR complex. In addition, it was demonstrated that, in the presence of ASA, the first binding site of BR on HSA was altered, but the parameters of binding did not become significantly modified, and thus the affinity of BR barely changed with and without ASA.
Collapse
Affiliation(s)
- Akram Hosainzadeh
- Department of Biology, Faculty of Sciences, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | | | | | | |
Collapse
|
72
|
Liu YF, Xia HT, Rong DF. Crystal structure and interaction with bovine serum albumin of the Cu(I/II) complex [C20H32Cu2I3N4] n. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.706282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Yu-Fen Liu
- a School of Chemical Engineering, Huaihai Institute of Technology , Lianyungang , Jiangsu , China
| | - Hai-Tao Xia
- a School of Chemical Engineering, Huaihai Institute of Technology , Lianyungang , Jiangsu , China
| | - De-Fu Rong
- b Beilun Entry-Exit Inspection and Quarantine Bureau of China , Ningbo , Zhejiang , China
| |
Collapse
|
73
|
Flavonoid aglycones can compete with Ochratoxin A for human serum albumin: a new possible mode of action. Int J Biol Macromol 2012; 51:279-83. [PMID: 22634515 DOI: 10.1016/j.ijbiomac.2012.05.019] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 05/14/2012] [Accepted: 05/15/2012] [Indexed: 11/22/2022]
Abstract
The mycotoxin Ochratoxin A (OTA) appears worldwide in cereals, plant products, different foods and drinks. Ochratoxin A binds to plasma albumin with a very high affinity. However, it is well known that natural flavonoids can also bind to human serum albumin (HSA) at the same binding site as OTA does (site I, subdomain IIA). A few experimental literature data suggest that reducing the bound fraction of OTA speeds up its elimination rate with a potential decrease in its toxicity. In our experimental model competitive binding properties of flavonoid aglycones were examined with a fluorescence polarization based approach. Our data show that some of the flavonoids are able to remove the toxin from HSA. We conclude that among the 13 studied flavonoid aglycones galangin and quercetin were the most effective competitors for OTA.
Collapse
|
74
|
Atrahimovich D, Vaya J, Tavori H, Khatib S. Glabridin protects paraoxonase 1 from linoleic acid hydroperoxide inhibition via specific interaction: a fluorescence-quenching study. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:3679-3685. [PMID: 22380866 DOI: 10.1021/jf2046009] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The enzyme paraoxonase 1 (PON1) binds to high-density lipoprotein (HDL) and is responsible for many of HDL's antiatherogenic properties. We previously showed that recombinant PON1 is inhibited by linoleic acid hydroperoxide (LA-OOH) present in the lipid fraction of the human carotid plaque (LLE) via oxidation of the enzyme's Cys284 thiol. Here we explore the effect of glabridin, an isoflavan isolated from licorice root, on preventing LA-OOH's inhibitory effect on rePON1 using the tryptophan-fluorescence-quenching technique and modeling calculations. Glabridin significantly prevented rePON1 inhibition by LLE or oxidized linoleic acid (by 22% and 15%, respectively), whereas ascorbic acid and Trolox, strong antioxidants, had no effect. Glabridin quenched the intrinsic fluorescence of rePON1 in a concentration-dependent manner. Binding parameters and modeling calculations demonstrated a major role for hydrophobic forces in the rePON1-glabridin interaction, indicating that it is not the antioxidant capacity of glabridin that protects rePON1 from LA-OOH inhibition, but rather its specific interaction with the enzyme.
Collapse
Affiliation(s)
- Dana Atrahimovich
- Oxidative Stress Research Laboratory, MIGAL-Galilee Technology Center, Kiryat Shmona, Israel
| | | | | | | |
Collapse
|
75
|
Zhang G, Wang L, Pan J. Probing the binding of the flavonoid diosmetin to human serum albumin by multispectroscopic techniques. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:2721-2729. [PMID: 22353148 DOI: 10.1021/jf205260g] [Citation(s) in RCA: 179] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The binding mechanism of molecular interaction between diosmetin and human serum albumin (HSA) in a pH 7.4 phosphate buffer was studied using atomic force microscopy (AFM) and various spectroscopic techniques including fluorescence, resonance light scattering (RLS), UV-vis absorption, circular dichroism (CD), and Fourier transform infrared (FT-IR) spectroscopy. Fluorescence data revealed that the fluorescence quenching of HSA by diosmetin was a static quenching procedure. The binding constants and number of binding sites were evaluated at different temperatures. The RLS spectra and AFM images showed that the dimension of the individual HSA molecules were larger after interaction with diosmetin. The thermodynamic parameters, ΔH° and ΔS° were calculated to be -24.56 kJ mol(-1) and 14.67 J mol(-1) K(-1), respectively, suggesting that the binding of diosmtin to HSA was driven mainly by hydrophobic interactions and hydrogen bonds. The displacement studies and denaturation experiments in the presence of urea indicated site I as the main binding site for diosmetin on HSA. The binding distance between diosmetin and HSA was determined to be 3.54 nm based on the Förster theory. Analysis of CD and FT-IR spectra demonstrated that HSA conformation was slightly altered in the presence of diosmetin.
Collapse
Affiliation(s)
- Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China.
| | | | | |
Collapse
|
76
|
Xiao J, Kai G. A Review of Dietary Polyphenol-Plasma Protein Interactions: Characterization, Influence on the Bioactivity, and Structure-Affinity Relationship. Crit Rev Food Sci Nutr 2012; 52:85-101. [PMID: 21991992 DOI: 10.1080/10408398.2010.499017] [Citation(s) in RCA: 164] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
77
|
Features of the complex of food additive hesperidin to hemoglobin. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2012; 106:53-60. [DOI: 10.1016/j.jphotobiol.2011.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 10/05/2011] [Accepted: 10/08/2011] [Indexed: 11/20/2022]
|
78
|
Study on the interaction of tamiflu and oseltamivir carboxylate with human serum albumin. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2011; 105:34-9. [DOI: 10.1016/j.jphotobiol.2011.06.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2011] [Revised: 05/22/2011] [Accepted: 06/23/2011] [Indexed: 01/10/2023]
|
79
|
Laccase-catalysed protein–flavonoid conjugates for flax fibre modification. Appl Microbiol Biotechnol 2011; 93:585-600. [DOI: 10.1007/s00253-011-3524-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Revised: 07/18/2011] [Accepted: 08/01/2011] [Indexed: 10/17/2022]
|
80
|
Wang HD, Niu CH, Yang Q, Badea I. Study on protein conformation and adsorption behaviors in nanodiamond particle-protein complexes. NANOTECHNOLOGY 2011; 22:145703. [PMID: 21346296 DOI: 10.1088/0957-4484/22/14/145703] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In the present research, the conformation of bovine serum albumin (BSA) in the nanodiamond particle (ND)-BSA complex was studied by Fourier transform infrared spectroscopy, fluorescence spectroscopy, UV-vis spectroscopy, and circular dichroism spectroscopy. The spectroscopic study revealed that most BSA structural features could be preserved in the complex though the BSA underwent conformational changes in the complex due to ND-BSA interaction. In addition, BSA adsorption isotherms and zeta-potential measurements were employed to investigate the pH dependence of the ND-BSA interaction. The changes in surface charge of the ND-BSA complex with pH variations indicated that the binding of BSA to ND might lead to not only the adsorption of BSA onto the ND surface but also the partial breakup of ND aggregates into relatively small ND-BSA aggregates because of the strong binding force between ND and BSA. The results show that ND is an excellent platform for protein immobilization with high affinity and holds great potential to be used for biosensor applications.
Collapse
Affiliation(s)
- Hai-Dong Wang
- Department of Biomedical Engineering, University of Saskatchewan, Saskatoon S7N5A9, Canada
| | | | | | | |
Collapse
|
81
|
Wang G, Wang L, Tang W, Hao X, Wang Y, Lu Y. Binding of Quercetin to Lysozyme as Probed by Spectroscopic Analysis and Molecular Simulation. J Fluoresc 2011; 21:1879-86. [DOI: 10.1007/s10895-011-0884-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2010] [Accepted: 03/23/2011] [Indexed: 11/24/2022]
|
82
|
Xu C, Chen X. Molecular property–affinity relationship of the interaction between dietary polyphenols and bovine milk proteins. Food Funct 2011; 2:368-72. [DOI: 10.1039/c1fo10074b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
83
|
Gao W, Li N, Chen Y, Xu Y, Lin Y, Yin Y, Hu Z. Study of interaction between syringin and human serum albumin by multi-spectroscopic method and atomic force microscopy. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.08.042] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
84
|
Shang Y, Li H. Studies of the interaction between apigenin and bovine serum albumin by spectroscopic methods. RUSS J GEN CHEM+ 2010. [DOI: 10.1134/s1070363210080232] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
85
|
Naik P, Chimatadar S, Nandibewoor S. Interaction between a potent corticosteroid drug – Dexamethasone with bovine serum albumin and human serum albumin: A fluorescence quenching and fourier transformation infrared spectroscopy study. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2010; 100:147-59. [DOI: 10.1016/j.jphotobiol.2010.05.014] [Citation(s) in RCA: 171] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Revised: 05/25/2010] [Accepted: 05/31/2010] [Indexed: 10/19/2022]
|
86
|
Di Bari L, Ripoli S, Pradhan S, Salvadori P. Interactions between quercetin and warfarin for albumin binding: A new eye on food/drug interference. Chirality 2010; 22:593-6. [PMID: 19902529 DOI: 10.1002/chir.20794] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The interaction between quercetin, a popular antioxidant flavonoid, and human serum albumin (HSA) is investigated and characterized by means of induced circular dichroism and saturation transfer difference NMR. These techiques demonstrate the reversible binding of quercetin to the carrier protein, which is responsible for its dissolution in aqueous medium. Competition experiments with two classical probes for HSA binding sites, namely Ibuprofen and Warfarin (a common anticoagulant coumarin), demonstrate that quercetin has a primary binding site located in the subdomain IIA, where coumarins are hosted. The affinity for this site is large and we found that quercetin may effectively displace warfarin from HSA. This may have relevant consequences in rationalizing the interferences of common dietary compounds and food supplements to anticoagulant treatments.
Collapse
Affiliation(s)
- Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Pisa, Italy
| | | | | | | |
Collapse
|
87
|
Han LJ, Shi S, Zheng LF, Yang DJ, Yao TM, Ji LN. Flavonoids Inhibit Heparin-Induced Aggregation of the Third Repeat (R3) of Microtubule-Binding Domain of Alzheimer’s Tau Protein. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2010. [DOI: 10.1246/bcsj.20090254] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
88
|
Hashemi N, Sun G. Intermolecular Interactions between Surfactants and Cationic Dyes and Effect on Antimicrobial Properties. Ind Eng Chem Res 2010. [DOI: 10.1021/ie101001d] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nastaran Hashemi
- Fiber and Polymer Science, University of California, Davis, California 95616
| | - Gang Sun
- Fiber and Polymer Science, University of California, Davis, California 95616
| |
Collapse
|
89
|
Rusak G, Piantanida I, Masić L, Kapuralin K, Durgo K, Kopjar N. Spectrophotometric analysis of flavonoid-DNA interactions and DNA damaging/protecting and cytotoxic potential of flavonoids in human peripheral blood lymphocytes. Chem Biol Interact 2010; 188:181-9. [PMID: 20637747 DOI: 10.1016/j.cbi.2010.07.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2010] [Revised: 07/05/2010] [Accepted: 07/08/2010] [Indexed: 10/19/2022]
Abstract
The ability of luteolin, kaempferol and apigenin to bind to calf thymus (ct)-DNA, mode of action and stability of flavonoids in buffer were investigated. Spectrophotometric analysis revealed a rapid degradation of apigenin in an aqueous medium, while kaempferol and luteolin were stable for 24h upon dissolution in water. Spectrophotometric study of the interactions of kaempferol and luteolin with calf thymus DNA suggests classic intercalation as their dominant binding mode to DNA. Cytotoxicity/genotoxicity and cytoprotective/genoprotective effects of flavonoids in non-stressed and hydrogen peroxide stressed human peripheral lymphocytes were investigated using the fluorescent dye exclusion method and alkaline comet assay. Flavonoids revealed significant genoprotective effects in hydrogen peroxide stressed cells and in cells submitted to longer incubation in the cell culture medium. Luteolin, followed by apigenin and kaempferol, was shown to be the most effective in protecting DNA from oxidative damage induced by hydrogen peroxide. However, the investigated flavonoids also induced DNA damage, indicating their prooxidative capacity. The balance between the protection of DNA from oxidative damage and prooxidative effects was strongly dependent on flavonoid concentration and the incubation period.
Collapse
Affiliation(s)
- Gordana Rusak
- Faculty of Science, University of Zagreb, Zagreb, Croatia.
| | | | | | | | | | | |
Collapse
|
90
|
Saquib Q, Al-Khedhairy AA, Alarifi SA, Dwivedi S, Mustafa J, Musarrat J. Fungicide methyl thiophanate binding at sub-domain IIA of human serum albumin triggers conformational change and protein damage. Int J Biol Macromol 2010; 47:60-7. [DOI: 10.1016/j.ijbiomac.2010.03.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2010] [Revised: 03/06/2010] [Accepted: 03/26/2010] [Indexed: 10/19/2022]
|
91
|
Sudhamalla B, Gokara M, Ahalawat N, Amooru DG, Subramanyam R. Molecular Dynamics Simulation and Binding Studies of β-Sitosterol with Human Serum Albumin and Its Biological Relevance. J Phys Chem B 2010; 114:9054-62. [DOI: 10.1021/jp102730p] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Babu Sudhamalla
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, 500046, India, Department of Biotechnology, School of Life Sciences, University of Hyderabad, 500046, India, and Department of Chemistry, Yogi Vemana University, Kadapa, Andhrapradesh, 516003, India
| | - Mahesh Gokara
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, 500046, India, Department of Biotechnology, School of Life Sciences, University of Hyderabad, 500046, India, and Department of Chemistry, Yogi Vemana University, Kadapa, Andhrapradesh, 516003, India
| | - Navjeet Ahalawat
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, 500046, India, Department of Biotechnology, School of Life Sciences, University of Hyderabad, 500046, India, and Department of Chemistry, Yogi Vemana University, Kadapa, Andhrapradesh, 516003, India
| | - Damu G. Amooru
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, 500046, India, Department of Biotechnology, School of Life Sciences, University of Hyderabad, 500046, India, and Department of Chemistry, Yogi Vemana University, Kadapa, Andhrapradesh, 516003, India
| | - Rajagopal Subramanyam
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, 500046, India, Department of Biotechnology, School of Life Sciences, University of Hyderabad, 500046, India, and Department of Chemistry, Yogi Vemana University, Kadapa, Andhrapradesh, 516003, India
| |
Collapse
|
92
|
|
93
|
Shang Y, Li H. Studies of the interaction between daidzein and 3′-daidzein sulfonic sodium with bovine serum albumin by spectroscopic methods. RUSS J GEN CHEM+ 2010. [DOI: 10.1134/s1070363210040298] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
94
|
Neelam S, Gokara M, Sudhamalla B, Amooru DG, Subramanyam R. Interaction Studies of Coumaroyltyramine with Human Serum Albumin and Its Biological Importance. J Phys Chem B 2010; 114:3005-12. [DOI: 10.1021/jp910156k] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Satyabala Neelam
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad, Andhrapradesh 500046, India, and Department of Chemistry, Yogi Vemana University, Kadapa, Andhrapradesh 516003, India
| | - Mahesh Gokara
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad, Andhrapradesh 500046, India, and Department of Chemistry, Yogi Vemana University, Kadapa, Andhrapradesh 516003, India
| | - Babu Sudhamalla
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad, Andhrapradesh 500046, India, and Department of Chemistry, Yogi Vemana University, Kadapa, Andhrapradesh 516003, India
| | - Damu G. Amooru
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad, Andhrapradesh 500046, India, and Department of Chemistry, Yogi Vemana University, Kadapa, Andhrapradesh 516003, India
| | - Rajagopal Subramanyam
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad, Andhrapradesh 500046, India, and Department of Chemistry, Yogi Vemana University, Kadapa, Andhrapradesh 516003, India
| |
Collapse
|
95
|
Matei I, Hillebrand M. Interaction of kaempferol with human serum albumin: A fluorescence and circular dichroism study. J Pharm Biomed Anal 2010; 51:768-73. [DOI: 10.1016/j.jpba.2009.09.037] [Citation(s) in RCA: 154] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Revised: 09/22/2009] [Accepted: 09/24/2009] [Indexed: 11/25/2022]
|
96
|
Jurasekova Z, Marconi G, Sanchez-Cortes S, Torreggiani A. Spectroscopic and molecular modeling studies on the binding of the flavonoid luteolin and human serum albumin. Biopolymers 2009; 91:917-27. [DOI: 10.1002/bip.21278] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
97
|
Interaction studies of a novel Co(II)-based potential chemotherapeutic agent with human serum albumin (HSA) employing biophysical techniques. Med Chem Res 2009. [DOI: 10.1007/s00044-009-9231-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
98
|
Shahabadi N, Maghsudi M. Binding studies of a new copper (II) complex containing mixed aliphatic and aromatic dinitrogen ligands with bovine serum albumin using different instrumental methods. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2009.04.027] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
99
|
Park YS, Towantakavanit K, Namiesnik J, Sliwka-Kaszynska M, Kusznierewicz B, Kozlowska-Tylingo K, Leontowicz H, Leontowicz M, Matrinez-Ayala AL, Gorinstein S. Partial characterization of three Korean white lotus cultivars. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:4391-4397. [PMID: 19358531 DOI: 10.1021/jf900016d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The nutritional and bioactive values of Korean white lotus cultivars (Muan, Chungyang, and Garam) extracted with methanol, water, and acetone solvents were evaluated by the contents of their bioactive compounds and antioxidant activity determined by ABTS, CUPRAC, FRAP, DPPH, and β-carotene-linoleic acid assays. HPLC, fluorometry, and FTIR spectroscopy were employed for evaluation of polyphenols and fatty acids. All lotus cultivar extracts possessed high amounts of total phenolics, ascorbic acid, proteins, and fatty acids and exhibited high levels of antioxidant activity, which were higher in water than in organic solvents. The significant highest content of the above-mentioned indices and biological activity were recorded in the Chungyang cultivar. Therefore, all studied Korean white lotus cultivars and in particular Chungyang could be recommended as effective nutritional and bioactive products, however, after investigation on humans.
Collapse
Affiliation(s)
- Yong-Seo Park
- Department of Horticultural Science, Mokpo National University, Muan 534-729, Korea
| | | | | | | | | | | | | | | | | | | |
Collapse
|
100
|
Yang X, Wu D, Du Z, Li R, Chen X, Li X. Spectroscopy study on the interaction of quercetin with collagen. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:3431-3435. [PMID: 19326949 DOI: 10.1021/jf803671s] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In order to understand the interaction between quercetin and collagen clearly, the UV-vis, FTIR-HATR, and fluorescence spectroscopy were used, and the data obtained by these experiments suggested that quercetin could bind to collagen. Results of FTIR-HATR and UV-vis absorption spectra suggested that the interaction of quercetin and collagen did not alter the conformation of collagen. The fluorescence spectra revealed that collagen could cause the quenching of quercetin fluorescence through a dynamic quenching procedure. The calculated quenching constant K(SV) and bimolecular quenching rate constant k(q) suggested that diffusion played a major role in quenching. In addition, the interaction of quercetin and collagen was evaluated by calculating (determining) the number of binding sites (n) and apparent binding constant K(A).
Collapse
Affiliation(s)
- Xiaozhan Yang
- Institute of Materia Medica, College of Pharmay, Third Military Medical University, Chongqing 400038, People's Republic of China
| | | | | | | | | | | |
Collapse
|