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Kubczak M, Grodzicka M, Michlewska S, Karimov M, Ewe A, Aigner A, Bryszewska M, Ionov M. The effect of novel tyrosine-modified polyethyleneimines on human albumin structure - Thermodynamic and spectroscopic study. Colloids Surf B Biointerfaces 2023; 227:113359. [PMID: 37209597 DOI: 10.1016/j.colsurfb.2023.113359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/10/2023] [Accepted: 05/16/2023] [Indexed: 05/22/2023]
Abstract
The interaction of proteins with nanoparticle components are crucial for the evaluation of nanoparticle function, toxicity and biodistribution. Polyethyleneimines (PEIs) with defined tyrosine modifications are a class of novel polymers designed for improved siRNA delivery. Their interactions with biomacromolecules are still poorly described. This paper analyzes the interaction of different tyrosine-modified PEIs with human serum albumin as the most abundant serum protein. The ability of tyrosine modified, linear or branched PEIs to bind human serum albumin (HSA) was analyzed and further characterized. The interaction with hydrophobic parts of protein were studied using 1- nilinonaphthalene-8-sulfonic acid (ANS) and changes in the HSA secondary structure were evaluated using circular dichroism (CD). Complex formation and sizes were studied by transmission electron microscopy (TEM) and dynamic light scattering methods (DLS). We demonstrate that tyrosine modified PEIs are able to bind human serum albumin. Based on thermodynamic studies, van der Waals interaction, H-bonding and hydrophobic interactions are determined as main molecular forces involved in complex formation. Analysis of secondary structures revealed that the polymers decreased α-helix content, while increasing levels of randomly folded structures. Complex formation was confirmed by TEM and DLS. These findings are crucial for understanding polymer-protein interactions and the properties of nanoparticles.
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Affiliation(s)
- Małgorzata Kubczak
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Poland, PomorskaStr. 141/143, 90-236 Lodz, Poland.
| | - Marika Grodzicka
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Poland, PomorskaStr. 141/143, 90-236 Lodz, Poland; BioMedChem Doctoral School of the UL and Lodz Institutes of the Polish Academy of Science, Banacha 12/16, 90-237 Lodz, Poland
| | - Sylwia Michlewska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Poland, PomorskaStr. 141/143, 90-236 Lodz, Poland; Laboratory of Microscopic Imaging and Specialized Biological Techniques, Faculty of Biology and Environmental Protection, University of Lodz, Poland, Banacha 12/16, 90-237 Lodz, Poland
| | - Michael Karimov
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Clinical Pharmacology, Faculty of Medicine, Leipzig University, Germany, Härtelstrasse 16-18, 04107 Leipzig, Germany
| | - Alexander Ewe
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Clinical Pharmacology, Faculty of Medicine, Leipzig University, Germany, Härtelstrasse 16-18, 04107 Leipzig, Germany
| | - Achim Aigner
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Clinical Pharmacology, Faculty of Medicine, Leipzig University, Germany, Härtelstrasse 16-18, 04107 Leipzig, Germany
| | - Maria Bryszewska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Poland, PomorskaStr. 141/143, 90-236 Lodz, Poland
| | - Maksim Ionov
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Poland, PomorskaStr. 141/143, 90-236 Lodz, Poland
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2
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Nedić O, Penezić A, Minić S, Radomirović M, Nikolić M, Ćirković Veličković T, Gligorijević N. Food Antioxidants and Their Interaction with Human Proteins. Antioxidants (Basel) 2023; 12:antiox12040815. [PMID: 37107190 PMCID: PMC10135064 DOI: 10.3390/antiox12040815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 03/22/2023] [Accepted: 03/25/2023] [Indexed: 03/29/2023] Open
Abstract
Common to all biological systems and living organisms are molecular interactions, which may lead to specific physiological events. Most often, a cascade of events occurs, establishing an equilibrium between possibly competing and/or synergistic processes. Biochemical pathways that sustain life depend on multiple intrinsic and extrinsic factors contributing to aging and/or diseases. This article deals with food antioxidants and human proteins from the circulation, their interaction, their effect on the structure, properties, and function of antioxidant-bound proteins, and the possible impact of complex formation on antioxidants. An overview of studies examining interactions between individual antioxidant compounds and major blood proteins is presented with findings. Investigating antioxidant/protein interactions at the level of the human organism and determining antioxidant distribution between proteins and involvement in the particular physiological role is a very complex and challenging task. However, by knowing the role of a particular protein in certain pathology or aging, and the effect exerted by a particular antioxidant bound to it, it is possible to recommend specific food intake or resistance to it to improve the condition or slow down the process.
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Affiliation(s)
- Olgica Nedić
- Institute for the Application of Nuclear Energy, Department for Metabolism, University of Belgrade, Banatska 31b, 11080 Belgrade, Serbia
- Correspondence:
| | - Ana Penezić
- Institute for the Application of Nuclear Energy, Department for Metabolism, University of Belgrade, Banatska 31b, 11080 Belgrade, Serbia
| | - Simeon Minić
- Center of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, 11000 Belgrade, Serbia
| | - Mirjana Radomirović
- Center of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, 11000 Belgrade, Serbia
| | - Milan Nikolić
- Center of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, 11000 Belgrade, Serbia
| | - Tanja Ćirković Veličković
- Center of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, 11000 Belgrade, Serbia
- Serbian Academy of Sciences and Arts, Knez Mihailova 35, 11000 Belgrade, Serbia
| | - Nikola Gligorijević
- Institute for the Application of Nuclear Energy, Department for Metabolism, University of Belgrade, Banatska 31b, 11080 Belgrade, Serbia
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3
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Onodera T, Miyazaki H, Li X, Wang J, Nakayasu M, Yatabe R, Tahara Y, Hosoki A, Sakurai N, Sugiyama A. Development of two-dimensional qualitative visualization method for isoflavones secreted from soybean roots using sheets with immobilized bovine serum albumin. Biosens Bioelectron 2022; 196:113705. [PMID: 34715535 DOI: 10.1016/j.bios.2021.113705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/22/2021] [Accepted: 10/10/2021] [Indexed: 02/06/2023]
Abstract
A visualization method for the qualitative evaluation of soybean isoflavones secreted from soybean roots by transferring them onto a sheet with immobilized bovine serum albumin (BSA) was developed. BSA was chemically bonded onto a glass microfiber filter. The fluorescence quenching resulting from the interaction of BSA with soybean isoflavones such as daidzein and daidzin was utilized. Fluorescence images before and after soybean roots were placed in contact with the sheets with immobilized BSA were taken with an electron-multiplying charge-coupled device camera. The fluorescence quenching in the images was visualized and analyzed. Soybean isoflavones were extracted from the sheets for quantitative analysis, and the correlation coefficient between the quenched fluorescence intensity per sheet and the total amount of soybean isoflavones was 0.78 (p < 0.01), indicating a high correlation. The quenched fluorescence intensity was lower in pumpkin roots, which do not secrete soybean isoflavone. It was found from analyzed images that soybean isoflavone is secreted in larger amounts from the basal region of the taproot and the tips of the lateral roots of soybean.
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Affiliation(s)
- Takeshi Onodera
- Faculty of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan.
| | - Haruna Miyazaki
- Graduate School of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan
| | - Xinzhu Li
- Graduate School of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan
| | - Jin Wang
- Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, 3-1-1 Tsushimanaka, Kitaku, Okayama, 700-8530, Japan
| | - Masaru Nakayasu
- Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan
| | - Rui Yatabe
- Faculty of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan
| | - Yusuke Tahara
- Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda City, Nagano, 386-8567, Japan
| | - Ai Hosoki
- Bioinformation and DDBJ Center, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka, 411-8540, Japan
| | - Nozomu Sakurai
- Bioinformation and DDBJ Center, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka, 411-8540, Japan
| | - Akifumi Sugiyama
- Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan
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4
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Farajzadeh-Dehkordi N, Farhadian S, Zahraei Z, Gholamian-Dehkordi N, Shareghi B. Interaction of reactive Red195 with human serum albumin: Determination of the binding mechanism and binding site by spectroscopic and molecular modeling methods. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114835] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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5
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A potential anticancer dihydropyrimidine derivative and its protein binding mechanism by multispectroscopic, molecular docking and molecular dynamic simulation along with its in-silico toxicity and metabolic profile. Eur J Pharm Sci 2021; 158:105686. [DOI: 10.1016/j.ejps.2020.105686] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/16/2020] [Accepted: 12/16/2020] [Indexed: 12/17/2022]
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Rekha MJ, Bettadaiah BK, Muthukumar SP, Govindaraju K. Synthesis, characterization and anti-inflammatory properties of karanjin (Pongamia pinnata seed) and its derivatives. Bioorg Chem 2021; 106:104471. [PMID: 33257003 DOI: 10.1016/j.bioorg.2020.104471] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/08/2020] [Accepted: 11/10/2020] [Indexed: 01/07/2023]
Abstract
Karanja (Pongamia pinnata) is a medicinal tree used in the Indian traditional ayurvedic system for treating several ailments. The seeds contain a unique furano-flavonoid karanjin, which has shown to possess many medicinal properties. Its usage at the clinical level is affected due to poor solubility and absorption. In the present investigation, molecular modifications of karanjin were attempted and evaluated their effect on anti-inflammatory activity. Firstly, Karanja ketone was obtained from karanjin by hydrolysis, and it was converted into karanja ketone oxime. The oxime undergoes Beckmann rearrangement and cyclized to yield furano benzoxazole (karanja oxazole). The new derivatives were purified with >95% purity (HPLC) and spectrally characterized (HR-MS, FTIR, and NMR). Among the test compounds, karanja ketone oxime exhibited higher antioxidant activity with an IC50 value of 360 µg/ml (DPPH). Soy lipoxygenase-1 (LOX-1) inhibitory activity of oxime was higher (IC50 = 65.4 µM) than other compounds. Fluorescence studies showed that oxime had higher quenching capacity with a Qmax of 76.3% and a binding constant of 0.9 × 105 M-1 for soy LOX-1. In-silico interaction studies showed that karanja ketone oxime had the least binding energy of -5.76 kcal/mol with LOX-1 by forming two hydrogen bonds with hydrophobic amino acids Leu 390 and Gly 392. The compounds were evaluated for their acute anti-inflammatory activity by the paw and ear edema in the rat model. Karanjin inhibits paw edema and ear edema by 34.13% and 51.13%, respectively, whereas the derivatives inhibited by 45-57 % and 70-76.8%. This study reports a rational approach to synthesize karanjin derivatives with considerable anti-inflammatory properties, both in-vitro and in-vivo.
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Affiliation(s)
- M J Rekha
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru 570 020, India
| | - B K Bettadaiah
- Department of Spices and Flavour Sciences, CSIR-Central Food Technological Research Institute, Mysuru 570 020, India.
| | - S P Muthukumar
- Department of Biochemistry, CSIR-Central Food Technological Research Institute, Mysuru 570 020, India
| | - K Govindaraju
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru 570 020, India.
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7
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López-Yerena A, Perez M, Vallverdú-Queralt A, Escribano-Ferrer E. Insights into the Binding of Dietary Phenolic Compounds to Human Serum Albumin and Food-Drug Interactions. Pharmaceutics 2020; 12:E1123. [PMID: 33233356 PMCID: PMC7700232 DOI: 10.3390/pharmaceutics12111123] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/18/2020] [Accepted: 11/20/2020] [Indexed: 02/06/2023] Open
Abstract
The distribution of drugs and dietary phenolic compounds in the systemic circulation de-pends on, among other factors, unspecific/specific reversible binding to plasma proteins such as human serum albumin (HSA). Phenolic substances, present in plant-derived feeds, foods, beverages, herbal medicines, and dietary supplements, are of great interest due to their biological activity. Recently, considerable research has been directed at the formation of phenol-HSA complexes, focusing above all on structure-affinity relationships. The nucleophilicity and planarity of molecules can be altered by the number and position of hydroxyl groups on the aromatic ring and by hydrogenation. Binding affinities towards HSA may also differ between phenolic compounds in their native form and conjugates derived from phase II reactions. On the other hand, food-drug interactions may increase the concentration of free drugs in the blood, affecting their transport and/or disposition and in some cases provoking adverse or toxic effects. This is caused mainly by a decrease in drug binding affinities for HSA in the presence of flavonoids. Accordingly, to avoid the side effects arising from changes in plasma protein binding, the intake of flavonoid-rich food and beverages should be taken into consideration when treating certain pathologies.
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Affiliation(s)
- Anallely López-Yerena
- Department of Nutrition, Food Science and Gastronomy XaRTA, Faculty of Pharmacy and Food Sciences, Institute of Nutrition and Food Safety (INSA-UB), University of Barcelona, 08028 Barcelona, Spain; (A.L.-Y.); (M.P.); (A.V.-Q.)
| | - Maria Perez
- Department of Nutrition, Food Science and Gastronomy XaRTA, Faculty of Pharmacy and Food Sciences, Institute of Nutrition and Food Safety (INSA-UB), University of Barcelona, 08028 Barcelona, Spain; (A.L.-Y.); (M.P.); (A.V.-Q.)
- Laboratory of Organic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain
| | - Anna Vallverdú-Queralt
- Department of Nutrition, Food Science and Gastronomy XaRTA, Faculty of Pharmacy and Food Sciences, Institute of Nutrition and Food Safety (INSA-UB), University of Barcelona, 08028 Barcelona, Spain; (A.L.-Y.); (M.P.); (A.V.-Q.)
- CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III, 28029 Madrid, Spain
| | - Elvira Escribano-Ferrer
- CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III, 28029 Madrid, Spain
- Pharmaceutical Nanotechnology Group I+D+I Associated Unit to CSIC, Biopharmaceutics and Pharmacokinetics Unit, Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, Institute of Nanoscience and Nanotechnology (IN2UB), Pharmacy and Food Sciences School, University of Barcelona, 08028 Barcelona, Spain
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8
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Rimac H, Tandarić T, Vianello R, Bojić M. Indomethacin Increases Quercetin Affinity for Human Serum Albumin: A Combined Experimental and Computational Study and Its Broader Implications. Int J Mol Sci 2020; 21:ijms21165740. [PMID: 32785199 PMCID: PMC7460863 DOI: 10.3390/ijms21165740] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/06/2020] [Accepted: 08/08/2020] [Indexed: 12/17/2022] Open
Abstract
Human serum albumin (HSA) is the most abundant carrier protein in the human body. Competition for the same binding site between different ligands can lead to an increased active concentration or a faster elimination of one or both ligands. Indomethacin and quercetin both bind to the binding site located in the IIA subdomain. To determine the nature of the HSA-indomethacin-quercetin interactions, spectrofluorometric, docking, molecular dynamics studies, and quantum chemical calculations were performed. The results show that the indomethacin and quercetin binding sites do not overlap. Moreover, the presence of quercetin does not influence the binding constant and position of indomethacin in the pocket. However, binding of quercetin is much more favorable in the presence of indomethacin, with its position and interactions with HSA significantly changed. These results provide a new insight into drug-drug interactions, which can be important in situations when displacement from HSA or other proteins is undesirable or even desirable. This principle could also be used to deliberately prolong or shorten the xenobiotics' half-life in the body, depending on the desired outcomes.
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Affiliation(s)
- Hrvoje Rimac
- Department of Medicinal Chemistry, University of Zagreb Faculty of Pharmacy and Biochemistry, 10000 Zagreb, Croatia;
- Laboratory of Computational Modelling of Drugs, South Ural State University, 454008 Chelyabinsk, Russia
- Correspondence:
| | - Tana Tandarić
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, 10000 Zagreb, Croatia; (T.T.); (R.V.)
| | - Robert Vianello
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, 10000 Zagreb, Croatia; (T.T.); (R.V.)
| | - Mirza Bojić
- Department of Medicinal Chemistry, University of Zagreb Faculty of Pharmacy and Biochemistry, 10000 Zagreb, Croatia;
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9
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Das S, Sarmah S, Singha Roy A. Monitoring fluorescence emission behaviors of dietary polyphenols in a serum albumin environment. NEW J CHEM 2020. [DOI: 10.1039/c9nj03938d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Kaempferol can be used as a multi-wavelength fluorescent probe due to its dual emission characteristics in a serum albumin environment.
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Affiliation(s)
- Sourav Das
- Department of Chemistry
- National Institute of Technology Meghalaya
- Shillong-793003
- India
| | - Sharat Sarmah
- Department of Chemistry
- National Institute of Technology Meghalaya
- Shillong-793003
- India
| | - Atanu Singha Roy
- Department of Chemistry
- National Institute of Technology Meghalaya
- Shillong-793003
- India
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10
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Proença C, Freitas M, Ribeiro D, Tomé SM, Araújo AN, Silva AMS, Fernandes PA, Fernandes E. The dipeptidyl peptidase-4 inhibitory effect of flavonoids is hindered in protein rich environments. Food Funct 2019; 10:5718-5731. [PMID: 31441917 DOI: 10.1039/c9fo00722a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Dipeptidyl peptidase-4 (DPP-4) inhibitors present a unique approach for the management of type 2 diabetes (T2D). In the present study, the inhibition of DPP-4 was evaluated for a large panel of flavonoids, important components of the human diet, using in vitro and ex vivo models. The activity of the isolated enzyme was assayed in vitro. Subsequently, the most active flavonoids were tested ex vivo in human whole blood and plasma. In this study, contrary to the in vitro fluorometric tests, flavonoids did not show inhibitory activity against DPP-4. Due to the discrepancy in the results between the in vitro and ex vivo approaches, plasma protein binding values were determined, presenting values from 43.9 to 100.0%. This work provides a new insight into the inhibitory activity for DPP-4, based on the flavonoid scaffold. Additionally, the obtained results showed that the inhibitory effect of flavonoids against DPP-4 was hindered in protein rich environments, like that occurring in blood, and indicated the need for experimental refinement in drug discovery for blood targets.
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Affiliation(s)
- Carina Proença
- LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal.
| | - Marisa Freitas
- LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal.
| | - Daniela Ribeiro
- LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal.
| | - Sara M Tomé
- QOPNA and LAQV, REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Alberto N Araújo
- LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal.
| | - Artur M S Silva
- QOPNA and LAQV, REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Pedro A Fernandes
- UCIBIO, REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Eduarda Fernandes
- LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal.
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11
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Lv L, Fu C, Zhang F, Wang S. Thermally-induced whey protein isolate-daidzein co-assemblies: Protein-based nanocomplexes as an inhibitor of precipitation/crystallization for hydrophobic drug. Food Chem 2019; 275:273-281. [DOI: 10.1016/j.foodchem.2018.09.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 07/26/2018] [Accepted: 09/10/2018] [Indexed: 10/28/2022]
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12
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Coscueta ER, Pellegrini Malpiedi L, Nerli BB. Micellar systems of aliphatic alcohol ethoxylates as a sustainable alternative to extract soybean isoflavones. Food Chem 2018; 264:135-141. [PMID: 29853357 DOI: 10.1016/j.foodchem.2018.05.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 04/12/2018] [Accepted: 05/02/2018] [Indexed: 11/19/2022]
Abstract
Ethoxylated aliphatic surfactants belonging to the Genapol and Tergitol series were assessed as extraction systems of isoflavones. They showed good extraction properties when compared with different solvents, the Genapol X-080 exhibiting the best performance. Available commercial isoflavone pills were used, as a starting simple matrix, to determine the parameters that affect the extraction procedure. The temperature and the surfactant concentration showed to be factors that favored significantly the extraction performance. The application of optimized variables (Genapol X-080 11% m/m, pH 4.5; extraction temperature of 54 °C and extraction time of 60 min) on soybean flour (natural) allowed extracting 3.237 ± 0.173 mg of isoflavone per gram of treated flour. This result was three times what it was for methanol under identical conditions. Extraction with these micellar systems represents a sustainable alternative methodology for industrial purposes due to its low cost, biodegradability, non-toxicity and easy scaling up.
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Affiliation(s)
- Ezequiel R Coscueta
- Instituto de Procesos Biotecnológicos y Químicos (IPROBYQ), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 570, (S2002LRK) Rosario, Argentina
| | - Luciana Pellegrini Malpiedi
- Instituto de Procesos Biotecnológicos y Químicos (IPROBYQ), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 570, (S2002LRK) Rosario, Argentina
| | - Bibiana Beatriz Nerli
- Instituto de Procesos Biotecnológicos y Químicos (IPROBYQ), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 570, (S2002LRK) Rosario, Argentina.
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13
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Rational design of polysorbate 80 stabilized human serum albumin nanoparticles tailored for high drug loading and entrapment of irinotecan. Int J Pharm 2017; 536:82-94. [PMID: 29146538 DOI: 10.1016/j.ijpharm.2017.11.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/09/2017] [Accepted: 11/10/2017] [Indexed: 01/01/2023]
Abstract
Human serum albumin (HSA) nanoparticles are considered to be versatile carrier of anticancer agents in efficiently delivering the drug to the tumor site without causing any toxicity. The aim of the study was to develop stable HSA nanoparticles (NPs) of drug irinotecan (Iro) having slightly water solubility and moderate HSA binding. A novel strategy of employing a hydrophilic non-ionic surfactant polysorbate 80 which forms protein-polysorbate 80 complex with increased affinity and improvement in Iro-HSA binding has been used to maximize the loading and entrapment efficiency of Iro in HSA-NPs. Bespoke nanoparticles with entrapment efficiency (79.09%) and drug loading of 9.62% could be achieved with spherical shape and particle size of 77.38 nm, 0.290 polydispersity index and -23.7 mv Zeta potential. The drug entrapment in nanoparticles was confirmed by Differential Scanning Calorimeter, Fourier Transformation Infrared Spectroscopy and Fluorescence Spectroscopy. In vitro release of Iro from NPs showed biphasic-release with initial burst followed by prolonged release upto 24 h. The short-term stability investigation of nanodispersion showed no significant changes in physicochemical properties of NPs. Long-term studies on freeze dried Iro-HSA-NPs indicated good stability of NPs up to 12 months. This is the first report for efficient fabrication of Iro delivery system based on HSA nanoparticles.
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14
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Guo Y, Shen L, Yao X, Liu Y, Liu Y, Chen H, Min K, Zheng X. Spectroscopic and molecular docking study on the structure-affinity relationship and mechanism in the interaction of genistein and its derivatives with bovine serum albumin. LUMINESCENCE 2017; 32:1368-1384. [DOI: 10.1002/bio.3333] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 01/07/2017] [Accepted: 03/01/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Yu Guo
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology; University of South China, Hengyang; Hu'nan China
| | - Lixian Shen
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology; University of South China, Hengyang; Hu'nan China
| | - Xu Yao
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology; University of South China, Hengyang; Hu'nan China
| | - Yang Liu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology; University of South China, Hengyang; Hu'nan China
| | - Yunmei Liu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology; University of South China, Hengyang; Hu'nan China
| | - Hongfei Chen
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology; University of South China, Hengyang; Hu'nan China
| | - Ke Min
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology; University of South China, Hengyang; Hu'nan China
| | - Xing Zheng
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology; University of South China, Hengyang; Hu'nan China
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15
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Boonpawa R, Spenkelink A, Punt A, Rietjens IMCM. Physiologically based kinetic modeling of hesperidin metabolism and its use to predict in vivo effective doses in humans. Mol Nutr Food Res 2017; 61. [PMID: 28218440 DOI: 10.1002/mnfr.201600894] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 01/31/2017] [Accepted: 02/13/2017] [Indexed: 01/01/2023]
Abstract
SCOPE To develop a physiologically based kinetic (PBK) model that describes the absorption, distribution, metabolism, and excretion of hesperidin in humans, enabling the translation of in vitro concentration-response curves to in vivo dose-response curves. METHODS AND RESULTS The PBK model for hesperidin in humans was developed based on in vitro metabolic parameters. Hesperidin was predicted to mainly occur in the systemic circulation as different monoglucuronides. The plasma concentrations of hesperidin aglycone (hesperetin) was predicted to be <0.02 mg/L at an oral dose of 50 mg/kg bw. The developed PBK model allowed conversion of in vitro concentration-response curves for different effects to in vivo dose-response curves. The BMD05 (benchmark dose for 5% response) values for protein kinase A inhibition ranged between 135 and 529 mg/kg bw hesperidin, and for inhibition of endothelial cell migration and prostaglandin E2 and nitric oxide production ranged between 2.19 and 44 mg/kg bw hesperidin. These values are in line with reported human data showing in vivo effects by hesperidin and show that these effects may occur at Western dietary and supplementary intake of hesperidin. CONCLUSIONS The developed PBK model adequately predicts absorption, distribution, metabolism, and excretion of hesperidin in humans and allows to evaluate the human in vivo situation without the need for human intervention studies.
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Affiliation(s)
- Rungnapa Boonpawa
- Division of Toxicology, Wageningen University & Research, Wageningen, The Netherlands
| | - Albertus Spenkelink
- Division of Toxicology, Wageningen University & Research, Wageningen, The Netherlands
| | - Ans Punt
- Division of Toxicology, Wageningen University & Research, Wageningen, The Netherlands
| | - Ivonne M C M Rietjens
- Division of Toxicology, Wageningen University & Research, Wageningen, The Netherlands
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16
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Takeda T, Hao M, Cheng T, Bryant SH, Wang Y. Predicting drug-drug interactions through drug structural similarities and interaction networks incorporating pharmacokinetics and pharmacodynamics knowledge. J Cheminform 2017; 9:16. [PMID: 28316654 PMCID: PMC5340788 DOI: 10.1186/s13321-017-0200-8] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 02/15/2017] [Indexed: 12/19/2022] Open
Abstract
Drug–drug interactions (DDIs) may lead to adverse effects and potentially result in drug withdrawal from the market. Predicting DDIs during drug development would help reduce development costs and time by rigorous evaluation of drug candidates. The primary mechanisms of DDIs are based on pharmacokinetics (PK) and pharmacodynamics (PD). This study examines the effects of 2D structural similarities of drugs on DDI prediction through interaction networks including both PD and PK knowledge. Our assumption was that a query drug (Dq) and a drug to be examined (De) likely have DDI if the drugs in the interaction network of De are structurally similar to Dq. A network of De describes the associations between the drugs and the proteins relating to PK and PD for De. These include target proteins, proteins interacting with target proteins, enzymes, and transporters for De. We constructed logistic regression models for DDI prediction using only 2D structural similarities between each Dq and the drugs in the network of De. The results indicated that our models could effectively predict DDIs. It was found that integrating structural similarity scores of the drugs relating to both PK and PD of De was crucial for model performance. In particular, the combination of the target- and enzyme-related scores provided the largest increase of the predictive power.. ![]()
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Affiliation(s)
- Takako Takeda
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894 USA
| | - Ming Hao
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894 USA
| | - Tiejun Cheng
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894 USA
| | - Stephen H Bryant
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894 USA
| | - Yanli Wang
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894 USA
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17
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Probing the interaction between 7-O-β-d-glucopyranosyl-6-(3-methylbut-2-enyl)-5,4′-dihydroxyflavonol with bovine serum albumin (BSA). J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.12.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Ghosh P, Patwari J, Dasgupta S. Complexation With Human Serum Albumin Facilitates Sustained Release of Morin From Polylactic-Co-Glycolic Acid Nanoparticles. J Phys Chem B 2017; 121:1758-1770. [PMID: 28201869 DOI: 10.1021/acs.jpcb.6b08559] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Understanding the interaction of proteins with nanoparticles has become an important area of research in biomedical and pharmaceutical fields. Morin is a flavonol which shows several properties including antioxidant, anticancer, and anti-inflammatory activities. However, the major limitation is its poor aqueous solubility. Therefore, morin-loaded polylactic-co-glycolic acid (PLGA) nanoparticles (MPNPs) were prepared to improve the solubility of morin. The resulting MPNPs were characterized by spectroscopic and microscopic techniques. The nanoparticles were spherical with an average size of 237 ± 17 nm. UV-visible, fluorescence, and circular dichroism (CD) spectroscopy were employed to study the interaction of the MPNPs with human serum albumin (HSA). Our study revealed that a static fluorescence quenching mechanism was involved in the interaction between HSA and MPNPs. Hydrophobic interactions also play an important role in stabilizing the HSA-MPNP complex. CD results suggest that there is an alteration of the secondary structure of HSA in the presence of MPNPs. MPNPs exhibit antioxidant properties which are supported by the DPPH assay. We have further checked the effect of HSA on the antioxidant property of morin and MPNPs. HSA binding with MPNPs was also found to influence the in vitro release property of morin from MPNPs wherein a delayed release response is observed.
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Affiliation(s)
- Pooja Ghosh
- Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, India
| | - Jayita Patwari
- Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, India
| | - Swagata Dasgupta
- Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, India
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19
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Takić MM, Jovanović VB, Pavićević ID, Uzelac TN, Aćimović JM, Ristić-Medić DK, Mandić LM. Binding of enterolactone and enterodiol to human serum albumin: increase of cysteine-34 thiol group reactivity. Food Funct 2016; 7:1217-26. [PMID: 26838610 DOI: 10.1039/c5fo01346a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The interaction of polyphenolic molecules with human serum albumin (HSA) could lead to changes in the reactivity of the HSA Cys34 thiol group (HSA-SH). The influences of enterolactone (EL) and enterodiol (ED) binding on HSA-SH reactivity in fatty acid (FA)-free HSA, and in HSA with bound stearic acid (S) in S/HSA molar ratios of 1:1 and 4:1, were investigated by the determination of the pseudo first order rate constants (k') for the thiol reaction with 5,5'-dithiobis-(2-nitrobenzoic acid). The binding affinities and binding sites of EL and ED were also determined, using fluorescence measurements of the intrinsic fluorescence of Trp214 and diazepam (binding site marker). EL and ED binding to HSA increased the reactivity of HSA-SH in all assayed HSA-enterolignan complexes by 9.1-33.1%. The strongest effects were obtained for FA-free HSA-enterolignan complexes. S modulated/reduced the effect of EL on HSA-SH reactivity, while its influence on the effect of ED was negligible. The binding of enterolignans to HSA was investigated: the binding constants were the highest for FA-free HSA (EL: 11.64 × 10(4) M(-1) and ED: 5.59 × 10(4) M(-1) at 37 °C) and the lowest for S/HSA 4:1-enterolignan complexes (EL: 2.43 × 10(4) M(-1) and ED: 1.92 × 10(4) M(-1)). When the S/HSA ratio was increased, the binding affinities and number of binding sites for EL and ED were decreased. At the same time, a high correlation between binding constants and increased Cys34 reactivity was found (r = 0.974). Competitive experiments using diazepam indicated that the binding of ED and of EL was located in the hydrophobic pocket of site II in HSA. Overall, it is evident that stearic acid could modulate the enterolignan effects on HSA-SH reactivity as well as their binding to HSA. This finding could be important for pharmacokinetics and the expression of enterolignan antioxidant effects in vivo after an intake of lignan rich food.
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Affiliation(s)
- Marija M Takić
- Institute for Medical Research, Center of research excellence in nutrition and metabolism, University of Belgrade, Belgrade, Serbia
| | - Vesna B Jovanović
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
| | - Ivan D Pavićević
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
| | - Tamara N Uzelac
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
| | - Jelena M Aćimović
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
| | - Danijela K Ristić-Medić
- Institute for Medical Research, Center of research excellence in nutrition and metabolism, University of Belgrade, Belgrade, Serbia
| | - Ljuba M Mandić
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
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20
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Chen YC, Wang HM, Niu QX, Ye DY, Liang GW. Binding between Saikosaponin C and Human Serum Albumin by Fluorescence Spectroscopy and Molecular Docking. Molecules 2016; 21:153. [PMID: 26828474 PMCID: PMC6273137 DOI: 10.3390/molecules21020153] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 01/18/2016] [Accepted: 01/21/2016] [Indexed: 02/05/2023] Open
Abstract
Saikosaponin C (SSC) is one of the major active constituents of dried Radix bupleuri root (Chaihu in Chinese) that has been widely used in China to treat a variety of conditions, such as liver disease, for many centuries. The binding of SSC to human serum albumin (HSA) was explored by fluorescence, circular dichroism (CD), UV-vis spectrophotometry, and molecular docking to understand both the pharmacology and the basis of the clinical use of SSC/Chaihu. SSC produced a concentration-dependent quenching effect on the intrinsic fluorescence of HSA, accompanied by a blue shift in the fluorescence spectra. The Stern-Volmer equation showed that this quenching was dominated by static quenching. The binding constant of SSC with HSA was 3.72 × 10³ and 2.99 × 10³ L·mol(-1) at 26 °C and 36 °C, respectively, with a single binding site on each SSC and HSA molecule. Site competitive experiments demonstrated that SSC bound to site I (subdomain IIA) and site II (subdomain IIIA) in HSA. Analysis of thermodynamic parameters indicated that hydrogen bonding and van der Waals forces were mostly responsible for SSC-HSA association. The energy transfer efficiency and binding distance between SSC and HSA was calculated to be 0.23 J and 2.61 nm at 26 °C, respectively. Synchronous fluorescence and CD measurements indicated that SSC affected HSA conformation in the SSC-HSA complex. Molecular docking supported the experimental findings in conformational changes, binding sites and binding forces, and revealed binding of SSC at the interface between subdomains IIA-IIB.
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Affiliation(s)
- Yi-Cun Chen
- Key Immunopharmacology Laboratory of Guangdong Province, Department of Pathophysiology, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
- Department of Pharmacology, Traditional Chinese Medicine Laboratory, Shantou University Medical College, Guangdong 515041, China.
| | - Hong-Mei Wang
- Key Immunopharmacology Laboratory of Guangdong Province, Department of Pathophysiology, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
| | - Qing-Xia Niu
- Key Immunopharmacology Laboratory of Guangdong Province, Department of Pathophysiology, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
| | - Dan-Yan Ye
- Department of Pharmacology, Traditional Chinese Medicine Laboratory, Shantou University Medical College, Guangdong 515041, China.
| | - Guo-Wu Liang
- Key Immunopharmacology Laboratory of Guangdong Province, Department of Pathophysiology, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
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21
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Voicescu M, Hellwig P, Meghea A. Antioxidant activity of phytoestrogen type isoflavones in biomimetic environments. NEW J CHEM 2016. [DOI: 10.1039/c5nj01568e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxidation of phytoestrogen type isoflavones in lecithin lipidic bi-layers and in silver nanoparticle complexes by the chemiluminescence method.
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Affiliation(s)
- Mariana Voicescu
- Institute of Physical Chemistry “Ilie Murgulescu” of the Romanian Academy
- 060021 Bucharest
- Romania
| | - Petra Hellwig
- Laboratoire de Bioelectrochimie et Spectroscopie
- UMR 7140
- CNRS
- Université de Strasbourg
- Strasbourg
| | - Aurelia Meghea
- University POLITEHNICA of Bucharest
- Faculty of Applied Chemistry and Materials Sciences
- 78126 Bucharest
- Romania
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22
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Awasthi S, Saraswathi NT. Non-enzymatic glycation mediated structure–function changes in proteins: case of serum albumin. RSC Adv 2016. [DOI: 10.1039/c6ra08283a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Albumin, a major plasma protein with extraordinary ligand binding properties, transports various ligands ranging from drugs, hormones, fatty acids, and toxins to different tissues and organs in the body.
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Affiliation(s)
- Saurabh Awasthi
- Molecular Biophysics Lab
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613401
- India
| | - N. T. Saraswathi
- Molecular Biophysics Lab
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613401
- India
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23
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Rimac H, Debeljak Ž, Šakić D, Weitner T, Gabričević M, Vrček V, Zorc B, Bojić M. Structural and electronic determinants of flavonoid binding to human serum albumin: an extensive ligand-based study. RSC Adv 2016. [DOI: 10.1039/c6ra17796d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The most prominent features responsible for binding of flavonoid aglycones to the IIA region of human serum albumin (HSA) were determined based onin vitrofluorescence measurements and density functional theory calculations.
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Affiliation(s)
- Hrvoje Rimac
- University of Zagreb
- Faculty of Pharmacy and Biochemistry
- Department of Medicinal Chemistry
- HR-10000 Zagreb
- Croatia
| | - Željko Debeljak
- Clinical Hospital Center Osijek
- Osijek
- Croatia
- J.J. Strossmayer University of Osijek
- Faculty of Medicine
| | - Davor Šakić
- University of Zagreb
- Faculty of Pharmacy and Biochemistry
- Department of Medicinal Chemistry
- HR-10000 Zagreb
- Croatia
| | - Tin Weitner
- University of Zagreb
- Faculty of Pharmacy and Biochemistry
- Department of Medicinal Chemistry
- HR-10000 Zagreb
- Croatia
| | - Mario Gabričević
- University of Zagreb
- Faculty of Pharmacy and Biochemistry
- Department of Medicinal Chemistry
- HR-10000 Zagreb
- Croatia
| | - Valerije Vrček
- University of Zagreb
- Faculty of Pharmacy and Biochemistry
- Department of Medicinal Chemistry
- HR-10000 Zagreb
- Croatia
| | - Branka Zorc
- University of Zagreb
- Faculty of Pharmacy and Biochemistry
- Department of Medicinal Chemistry
- HR-10000 Zagreb
- Croatia
| | - Mirza Bojić
- University of Zagreb
- Faculty of Pharmacy and Biochemistry
- Department of Medicinal Chemistry
- HR-10000 Zagreb
- Croatia
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24
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Li W, Hu Q, Chan W. Mass Spectrometric and Spectrofluorometric Studies of the Interaction of Aristolochic Acids with Proteins. Sci Rep 2015; 5:15192. [PMID: 26471474 PMCID: PMC4608009 DOI: 10.1038/srep15192] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 09/21/2015] [Indexed: 01/04/2023] Open
Abstract
Aristolochic acid (AA) is a potent carcinogen and nephrotoxin and is associated with the development of "Chinese herb nephropathy" and Balkan endemic nephropathy. Despite decades of research, the specific mechanism of the observed nephrotoxicity has remained elusive and the potential effects on proteins due to the observed toxicity of AA are not well-understood. To better understand the pharmacotoxicological features of AA, we investigated the non-covalent interactions of AA with proteins. The protein-binding properties of AA with bovine serum albumin (BSA) and lysozyme were characterized using spectrofluorometric and mass spectrometric (MS) techniques. Moreover, the protein-AA complexes were clearly identified by high-resolution MS analyses. To the best of our knowledge, this is the first direct evidence of non-covalently bound protein-AA complexes. An analysis of the spectrofluorometric data by a modified Stern-Volmer plot model also revealed that both aristolochic acid I (AAI) and aristolochic acid II (AAII) were bound to BSA and lysozyme in 1:1 stoichiometries. A significantly stronger protein binding property was observed in AAII than in AAI as evidenced by the spectrofluorometric and MS analyses, which may explain the observed higher mutagenicity of AAII.
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Affiliation(s)
- Weiwei Li
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Qin Hu
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Wan Chan
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
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25
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Hao J, Zhang Y, Wang X, Yan H, Liu E, Gao X. Interaction between the Natural Components in Danhong Injection (DHI) with Serum Albumin (SA) and the Influence of the Coexisting Multi-Components on the SaB-BSA Binding System: Fluorescence and Molecular Docking Studies. PLoS One 2015; 10:e0128919. [PMID: 26035712 PMCID: PMC4452768 DOI: 10.1371/journal.pone.0128919] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 05/01/2015] [Indexed: 01/19/2023] Open
Abstract
Danhong injection (DHI) is a widely used Chinese Materia Medica standardized product for the clinical treatment of ischemic encephalopathy and coronary heart disease. The bindings of eight natural components in DHI between bovine serum albumin (BSA) were studied by fluorescence spectroscopy technology and molecular docking. According to the results, the quenching process of salvianolic acid B and hydroxysafflor yellow A was a static quenching procedure through the analysis of quenching data by the Stern-Volmer equation, the modified Stern-Volmer equation, and the modified Scatchard equation. Meanwhile, syringin (Syr) enhanced the fluorescence of BSA, and the data were analyzed using the Lineweaver-Burk equation. Molecular docking suggested that all of these natural components bind to serum albumin at the site I location. Further competitive experiments of SaB confirmed the result of molecular docking studies duo to the displacement of warfarin by SaB. Base on these studies, we selected SaB as a research target because it presented the strongest binding ability to BSA and investigated the influence of the multi-components coexisting in DHI on the interaction between the components of the SaB-BSA binding system. The participation of these natural components in DHI affected the interaction between the components of the SaB-BSA system. Therefore, when DHI is used in mammals, SaB is released from serum albumin more quickly than it is used alone. This work would provide a new experiment basis for revealing the scientific principle of compatibility for Traditional Chinese Medicine.
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Affiliation(s)
- Jia Hao
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, PR China
- Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, PR China
| | - Yingyue Zhang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, PR China
| | - Xingrui Wang
- Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, PR China
| | - Huo Yan
- Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, PR China
| | - Erwei Liu
- Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, PR China
- * E-mail:
| | - Xiumei Gao
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, PR China
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26
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Seyed Dorraji M, Panahi Azar V, Rasoulifard M. Interaction between deferiprone and human serum albumin: Multi-spectroscopic, electrochemical and molecular docking methods. Eur J Pharm Sci 2014; 64:9-17. [DOI: 10.1016/j.ejps.2014.08.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 07/16/2014] [Accepted: 08/07/2014] [Indexed: 12/20/2022]
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27
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Study of the Interaction Between Coenzyme Q10 and Human Serum Albumin: Spectroscopic Approach. J SOLUTION CHEM 2014. [DOI: 10.1007/s10953-014-0146-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Interactive association of drugs binding to human serum albumin. Int J Mol Sci 2014; 15:3580-95. [PMID: 24583848 PMCID: PMC3975355 DOI: 10.3390/ijms15033580] [Citation(s) in RCA: 235] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 02/17/2014] [Accepted: 02/18/2014] [Indexed: 02/06/2023] Open
Abstract
Human serum albumin (HSA) is an abundant plasma protein, which attracts great interest in the pharmaceutical industry since it can bind a remarkable variety of drugs impacting their delivery and efficacy and ultimately altering the drug’s pharmacokinetic and pharmacodynamic properties. Additionally, HSA is widely used in clinical settings as a drug delivery system due to its potential for improving targeting while decreasing the side effects of drugs. It is thus of great importance from the viewpoint of pharmaceutical sciences to clarify the structure, function, and properties of HSA–drug complexes. This review will succinctly outline the properties of binding site of drugs in IIA subdomain within the structure of HSA. We will also give an overview on the binding characterization of interactive association of drugs to human serum albumin that may potentially lead to significant clinical applications.
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29
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Singha Roy A, Ghosh KS, Dasgupta S. An investigation into the altered binding mode of green tea polyphenols with human serum albumin on complexation with copper. J Biomol Struct Dyn 2013; 31:1191-206. [DOI: 10.1080/07391102.2012.729158] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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30
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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]
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31
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Zhang J, Gao Y, Su F, Gong Z, Zhang Y. Interaction characteristics with bovine serum albumin and retarded nitric oxide release of ZCVI₄-2, a new nitric oxide-releasing derivative of oleanolic acid. Chem Pharm Bull (Tokyo) 2011; 59:734-41. [PMID: 21628910 DOI: 10.1248/cpb.59.734] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
ZCVI₄-2 is a newly developed furoxan-based nitric oxide-releasing derivative of oleanolic acid. It exhibited strong cytotoxicity against human hepatocellular carcinoma (HCC) in vitro and significantly inhibited the growth of HCC tumors in vivo. However, its low aqueous solubility and toxicity due to the fast release of nitric oxide (NO) in blood challenged its formulation. In the present investigation, the interaction characteristics of ZCVI₄-2 with bovine serum albumin (BSA) were studied by fluorescence spectrometry, synchronous fluorescence spectra and Fourier transform-infrared (FT-IR). It was found that ZCVI₄-2 concentration, temperature and pH had significant effect on the interactions. ZCVI₄-2 was able to bind BSA with high affinity, low temperature and neutral pH favor the binding. The interaction exhibited to be a spontaneous and exothermic process. ZCVI₄-2 was buried in the hydrophobic pocket in subdomain IIB of BSA and the exact binding site was around 3.83 nm in average from Trp²¹². The NO releasing characteristics of nanocomplexes were compared with ZCVI₄-2 solution by Griess Reagent Method. It was found that the release of NO from ZCVI₄-2/BSA nanocomplexes was retarded significantly, thus making ZCVI₄-2 into a BSA-bound nanocomplexes had the great potential to lower the toxicity due to the absence of organic solvents and surfactants and meanwhile the sustained release of NO.
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Affiliation(s)
- Jianjun Zhang
- School of Pharmacy, China Pharmaceutical University, Nanjing, P.R. China
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Zhang J, Wang XJ, Yan YJ, Xiang WS. Comparative studies on the interaction of genistein, 8-chlorogenistein, and 3',8-dichlorogenistein with bovine serum albumin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:7506-13. [PMID: 21595495 DOI: 10.1021/jf2005194] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Chlorination can significantly enhance the antioxidant and antitumor activity of genistein. In this paper, genistein, 8-chlorogenistein, and 3',8-dichlorogenistein were selected to investigate the binding to bovine serum albumin (BSA) using fluorescence spectroscopy and circular dichroism (CD). The results showed that chlorination, especially at position 3', had significant effects on the binding constant value of chlorinated genistein derivatives to BSA; however, the binding site and the binding number were slightly affected. The thermodynamic parameters indicated that hydrophobic and electrostatic forces played important roles in the binding process and the enhanced binding affinity mainly associated with the increase of the hydrophobicity caused by the chlorine atom substitution. Furthermore, the CD data demonstrated that the conformation of BSA was slightly altered in the presence of genistein, 8-chlorogenistein, and 3',8-dichlorogenistein, with different reduced α-helix contents. The results obtained herein will be of biological significance in toxicology investigation and genistein derivative drug design.
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Affiliation(s)
- Ji Zhang
- Northeast Agricultural University, Harbin, People's Republic of China
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Liu H, Bao W, Ding H, Jang J, Zou G. Binding modes of flavones to human serum albumin: insights from experimental and computational studies. J Phys Chem B 2011; 114:12938-47. [PMID: 20845951 DOI: 10.1021/jp102053x] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Pharmaceutical interactions with human serum albumin (HSA) are of great interest, because HSA is a pharmacokinetic determinant and a good model for exploring the protein-ligand interactions. Due to their hydrophobic nature, naturally occurring flavones, which possess various pharmacological activities, bind to HSA in human plasma. Here, we have identified the binding modes of two representative flavones--baicalin (BLI) and its aglycon, baicalein (BLE)--to HSA using a combination of experimental and computational approaches. The association properties were measured by applying spectroscopic methods, and a higher affinity was found for BLE. As evidenced by displacement and chemical unfolding assays, both ligands bind at Sudlow site I. Furthermore, molecular docking was utilized to characterize the models of HSA-flavone complexes, and molecular dynamics (MD) simulations as well as free energy calculations were undertaken to examine the energy contributions and the roles of various amino acid residues of HSA in flavones binding; the mechanism whereby glycosylation affects the association was also discussed. The present work provides reasonable binding models for both flavones to HSA.
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Affiliation(s)
- Hui Liu
- State Key Laboratory of Virology, College of Life Sciences, Center of Nanoscience and Nanotechnology, Wuhan University, Wuhan 430072, China
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Gao X, Tang Y, Rong W, Zhang X, Zhao W, Zi Y. Analysis of Binding Interaction between Captopril and Human Serum Albumin. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/ajac.2011.22030] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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Chaudhuri S, Chakraborty S, Sengupta PK. Probing the interactions of hemoglobin with antioxidant flavonoids via fluorescence spectroscopy and molecular modeling studies. Biophys Chem 2010; 154:26-34. [PMID: 21232842 DOI: 10.1016/j.bpc.2010.12.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2010] [Revised: 12/08/2010] [Accepted: 12/09/2010] [Indexed: 11/17/2022]
Abstract
Steady state and time resolved fluorescence spectroscopy, combined with molecular modeling computations, have been used to explore the interactions of two therapeutically important flavonoids, fisetin (3,7,3',4'-OH-flavone) and 3-hydroxyflavone (3-HF), with normal human hemoglobin (HbA). Distinctive 'two color' fluorescence signatures and fairly high fluorescence anisotropy (r=0.12-0.28) of fisetin and 3-HF reveal their specific interactions with HbA. Binding constants estimated from the fluorescence studies were ≈4.00 × 10(4)M(-1) and 9.83 × 10(3)M(-1) for fisetin and 3-HF respectively. Specific interactions with HbA were further confirmed from flavonoid-induced static quenching of the protein tryptophan fluorescence as indicated by: (a) bimolecular quenching constant K(q)≫diffusion controlled limit (b) closely matched values of Stern-Volmer quenching constant and binding constant (c) τ(o)/τ≈1 (where τ(o) and τ are the unquenched and quenched tryptophan fluorescence lifetimes respectively). Molecular docking and electrostatic surface potential calculations reveal contrasting binding modes of fisetin and 3-HF with HbA.
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Affiliation(s)
- Sudip Chaudhuri
- Biophysics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700064, India
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36
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Mitoxantrone Induced Impediment of Histone Acetylation and Structural Flexibility of the Protein. Cell Biochem Biophys 2010; 60:209-18. [DOI: 10.1007/s12013-010-9141-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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37
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Xiao J, Chen T, Chen L, Cao H, Yang F, Bai Y. CdTe quantum dots (QDs) improve the affinities of baicalein and genistein for human serum albumin in vitro. J Inorg Biochem 2010; 104:1148-55. [PMID: 20678807 DOI: 10.1016/j.jinorgbio.2010.07.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2010] [Revised: 07/02/2010] [Accepted: 07/06/2010] [Indexed: 02/08/2023]
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38
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Sneharani AH, Karakkat JV, Singh SA, Rao AGA. Interaction of curcumin with β-lactoglobulin-stability, spectroscopic analysis, and molecular modeling of the complex. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:11130-9. [PMID: 20925386 DOI: 10.1021/jf102826q] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Curcumin (diferuloyl methane) is the physiologically and pharmacologically active component of turmeric (Curcuma longa L.). Solubility and stability of curcumin are the limiting factors for realizing its therapeutic potential. β-Lactoglobulin (βLG), the major whey protein, can solubilize and bind many small hydrophobic molecules. The stability of curcumin bound to βLG in solution is enhanced 6.7 times, in comparison to curcumin alone (in aqueous solution). The complex formation of curcumin with βLG has been investigated employing spectroscopic techniques. βLG interacts with curcumin at pH 7.0 with an association constant of 1.04 ± 0.1 × 10(5) M(-1) to form a 1:1 complex at 25 °C. Entropy and free energy changes for the interaction derived from the van't Hoff plot are 18.7 cal mol(-1) K(-1) and -6.8 kcal mol(-1) at 25 °C, respectively; the interaction is hydrophobic in nature. The interaction of βLG with curcumin does not affect either the conformation or the state of association of βLG. Competitive ligand binding measurements, binding studies with denatured βLG, effect of pH on the curcumin-βLG interaction, Förster energy transfer measurements, and molecular docking studies suggest that curcumin binds to the central calyx of βLG. These binding studies have prompted the preparation and encapsulation of curcumin in βLG nanoparticles. Nanoparticles of βLG prepared by desolvation are found to encapsulate curcumin with >96% efficiency. The solubility of curcumin in βLG nanoparticle is significantly enhanced to ∼625 μM in comparison with its aqueous solubility (30 nM). Nanoparticles of βLG, by virtue of their ability to enhance solubility and stability of curcumin, may fit the choice as a carrier molecule.
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Affiliation(s)
- Athahalli H Sneharani
- Department of Protein Chemistry & Technology, Central Food Technological Research Institute (A Constituent Laboratory of the Council of Scientific and Industrial Research), Mysore-570020, India
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39
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Antioxidant actions of flavonoids: Thermodynamic and kinetic analysis. Arch Biochem Biophys 2010; 501:23-30. [DOI: 10.1016/j.abb.2010.04.005] [Citation(s) in RCA: 159] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2010] [Revised: 04/05/2010] [Accepted: 04/07/2010] [Indexed: 11/15/2022]
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40
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Alves RC, Almeida IMC, Casal S, Oliveira MBPP. Isoflavones in coffee: influence of species, roast degree, and brewing method. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:3002-3007. [PMID: 20131840 DOI: 10.1021/jf9039205] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
This paper reports the isoflavone contents of roasted coffee beans and brews, as influenced by coffee species, roast degree, and brewing procedure. Total isoflavone level is 6-fold higher in robusta coffees than in arabica ones, mainly due to formononetin. During roasting, the content of isoflavones decreases, whereas their extractability increases (especially for formononetin). Total isoflavones in espresso coffee (30 mL) varied from approximately 40 microg (100% arabica) to approximately 285 microg (100% robusta), with long espressos (70 mL) attaining more than double isoflavones of short ones (20 mL). Espressos (30 mL) prepared from commercial blends contained average amounts of 6, 17, and 78 microg of genistein, daidzein, and formononetin, respectively. Comparison of different brewing methods revealed that espresso contained more isoflavones ( approximately 170 microg/30 mL) than a cup of press-pot coffee ( approximately 130 microg/60 mL), less than a mocha coffee ( approximately 360 microg/60 mL), and amounts similar to those of a filtered coffee cup ( approximately 180 microg/120 mL).
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Affiliation(s)
- Rita C Alves
- REQUIMTE/Servico de Bromatologia, Faculdade de Farmacia, Universidade do Porto, Rua Anibal Cunha 164, 4099-030 Porto, Portugal.
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Mukherjee S, Acharya BR, Bhattacharyya B, Chakrabarti G. Genistein Arrests Cell Cycle Progression of A549 Cells at the G2/M Phase and Depolymerizes Interphase Microtubules through Binding to a Unique Site of Tubulin. Biochemistry 2010; 49:1702-12. [DOI: 10.1021/bi901760d] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Sumita Mukherjee
- Department of Biotechnology and Dr. B. C. Guha Centre for Genetic Engineering and Biotechnology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, WB 700019, India
| | - Bipul Ranjan Acharya
- Department of Biotechnology and Dr. B. C. Guha Centre for Genetic Engineering and Biotechnology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, WB 700019, India
| | | | - Gopal Chakrabarti
- Department of Biotechnology and Dr. B. C. Guha Centre for Genetic Engineering and Biotechnology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, WB 700019, India
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Chaudhuri S, Pahari B, Sengupta B, Sengupta PK. Binding of the bioflavonoid robinetin with model membranes and hemoglobin: Inhibition of lipid peroxidation and protein glycosylation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2009; 98:12-9. [PMID: 19914085 DOI: 10.1016/j.jphotobiol.2009.10.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2009] [Revised: 09/22/2009] [Accepted: 10/12/2009] [Indexed: 10/20/2022]
Abstract
Recent years have witnessed burgeoning interest in plant flavonoids as novel therapeutic drugs targeting cellular membranes and proteins. Motivated by this scenario, we explored the binding of robinetin (3,7,3',4',5'-pentahydroxyflavone, a bioflavonoid with remarkable 'two color' intrinsic fluorescence properties), with egg yolk phosphatidylcholine (EYPC) liposomes and normal human hemoglobin (HbA), using steady state and time resolved fluorescence spectroscopy. Distinctive fluorescence signatures obtained for robinetin indicate its partitioning (K(p)=8.65x10(4)) into the hydrophobic core of the membrane lipid bilayer. HbA-robinetin interaction was examined using both robinetin fluorescence and flavonoid-induced quenching of the protein tryptophan fluorescence. Specific interaction with HbA was confirmed from three lines of evidence: (a) bimolecular quenching constant K(q)>>diffusion controlled limit; (b) closely matched values of Stern-Volmer quenching constant and binding constant; (c) tau(0)/tau=1 (where tau(0) and tau are the unquenched and quenched tryptophan fluorescence lifetimes, respectively). Absorption spectrophotometric assays reveal that robinetin inhibits EYPC membrane lipid peroxidation and HbA glycosylation with high efficiency.
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Affiliation(s)
- Sudip Chaudhuri
- Biophysics Division, Saha Institute of Nuclear Physics 1/AF, Bidhannagar, Kolkata 700064, India
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43
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Dwiecki K, Neunert G, Polewski P, Polewski K. Antioxidant activity of daidzein, a natural antioxidant, and its spectroscopic properties in organic solvents and phosphatidylcholine liposomes. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2009; 96:242-8. [DOI: 10.1016/j.jphotobiol.2009.06.012] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2009] [Revised: 06/23/2009] [Accepted: 06/29/2009] [Indexed: 11/27/2022]
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44
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Cao S, Wang D, Tan X, Chen J. Interaction Between Trans-resveratrol and Serum Albumin in Aqueous Solution. J SOLUTION CHEM 2009. [DOI: 10.1007/s10953-009-9439-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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45
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Jang J, Liu H, Chen W, Zou G. Binding of mitomycin C to blood proteins: A spectroscopic analysis and molecular docking. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2009.03.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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46
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Sahoo BK, Ghosh KS, Dasgupta S. Molecular interactions of isoxazolcurcumin with human serum albumin: spectroscopic and molecular modeling studies. Biopolymers 2009; 91:108-19. [PMID: 18814316 DOI: 10.1002/bip.21092] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Curcumin is a nontoxic natural product with diverse pharmacological potencies. We report the interaction of a potent synthetic derivative of curcumin, isoxazolcurcumin (IOC) with human serum albumin (HSA) using various biophysical methods. The observed fluorescence quenching of HSA by IOC is due to a complex formation by a static quenching process with a quenching constant of the order of 10(5) M(-1). The binding affinity and the number of binding sites were obtained from a Scatchard analysis. Thermodynamics reveals that the interaction is entropy driven with predominantly hydrophobic forces. From the observed Förster-type fluorescence resonance energy transfer (FRET), the donor (Trp 214 in HSA) to acceptor (IOC) distance is calculated to be 3.2 nm. The conformational changes of HSA due to the interaction were investigated qualitatively from synchronous fluorescence spectra along with a quantitative estimation of the secondary structure from Fourier Transform Infrared (FTIR) and circular dichroism (CD) spectroscopies. Molecular docking studies were performed to obtain information on the possible residues involved in the interaction process, and changes in accessible surface area of the interacting residues were calculated. The preferred binding site of IOC was analyzed by ligand displacement experiments with 1-anilino-8-naphthalenesulfonate (ANS) and warfarin-bound HSA.
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Affiliation(s)
- Bijaya Ketan Sahoo
- Department of Chemistry, Indian Institute of Technology, Kharagpur, India
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47
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Mandeville JS, Froehlich E, Tajmir-Riahi H. Study of curcumin and genistein interactions with human serum albumin. J Pharm Biomed Anal 2009; 49:468-74. [DOI: 10.1016/j.jpba.2008.11.035] [Citation(s) in RCA: 153] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2008] [Revised: 11/27/2008] [Accepted: 11/28/2008] [Indexed: 10/21/2022]
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48
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Chen YM, Guo LH. Combined fluorescence and electrochemical investigation on the binding interaction between organic acid and human serum albumin. J Environ Sci (China) 2009; 21:373-379. [PMID: 19634451 DOI: 10.1016/s1001-0742(08)62279-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Human serum albumin (HSA) is a plasma protein responsible for the binding and transport of fatty acids and a variety of exogenous chemicals such as drugs and environmental pollutants. Such binding plays a crucial role in determining the ADME (absorption, distribution, metabolism, and excretion) and bioavailability of the pollutants. The binding interaction between HSA and acetic acid (C2), octanoic acid (C8) and dodecanoic acid (C12) has been investigated by the combination of site-specific fluorescent probe, tryptophan intrinsic fluorescence and tyrosine electrochemistry. For the study of the fatty acid interaction with the two drug-binding sites on HSA, two fluorescent probes, dansylamide and dansyl-L-proline were employed in the displacement measurements. Intrinsic fluorescence of tryptophan in HSA was monitored upon addition of the fatty acids into HSA. Electrocatalyzed response of the tyrosine residues in HSA by a redox mediator was used to investigate the binding interaction. Qualitatively, observations from these three approaches were very similar. HSA did not show any change in the fluorescence and electrochemical experiments after mixing with C2, suggesting there is no significant interaction with the short-chain fatty acid. For C8, the measured signal dropped in a single-exponential mode, indicating an independent and non-cooperative binding. The calculated association constant and binding ratio were 3.1 x 10(6) L/mol and 1 with drug binding Site I, 1.1 x 10(7) L/mol and 1 with Site II, and 7.0 x 10(4) L/mol and 4 with the tryptophan site, respectively. The measurements with C12 displayed multiple phases of fluorescence change, suggesting cooperativity and allosteric effect of the C12 binding. These results correlate well with those obtained by the established methods, and validate the new approach as a viable tool to study the interactions of environmental pollutants with biological molecules.
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Affiliation(s)
- Yan-Min Chen
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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49
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Khan SN, Islam B, Yennamalli R, Sultan A, Subbarao N, Khan AU. Interaction of mitoxantrone with human serum albumin: Spectroscopic and molecular modeling studies. Eur J Pharm Sci 2008; 35:371-82. [DOI: 10.1016/j.ejps.2008.07.010] [Citation(s) in RCA: 157] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2008] [Revised: 07/19/2008] [Accepted: 07/22/2008] [Indexed: 10/21/2022]
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50
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Chen YM, Guo LH. Fluorescence study on site-specific binding of perfluoroalkyl acids to human serum albumin. Arch Toxicol 2008; 83:255-61. [DOI: 10.1007/s00204-008-0359-x] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2008] [Accepted: 09/02/2008] [Indexed: 10/21/2022]
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