1
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Yang YD, Lu N, Tian R. Serum albumin acted as an effective carrier to improve the stability of bioactive flavonoid. Amino Acids 2023; 55:1879-1890. [PMID: 37856004 DOI: 10.1007/s00726-023-03347-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 10/03/2023] [Indexed: 10/20/2023]
Abstract
The health-improving functions of bioactive flavonoids in vitro and in vivo are often limited by their low stability, which could be counteracted by the application of proteins as carriers of flavonoids. Clarification of the mechanism of protein-ligand interaction is crucial for the encapsulation of bioactive components. Herein, common plasma proteins [i.e., bovine serum albumin (BSA), human serum albumin (HSA), human immunoglobulin G (IgG) and fibrinogen (FG)] were compared for their binding characteristics to quercetin, the main component of flavonoids in human diet, in the absence and presence of free Cu2+ (an accelerator for flavonoids' instability) using multi-spectroscopic and computational methods. As a flexible open structure of proteins, both BSA and HSA were found to be the most promising carriers for quercetin and Cu2+ with an affinity on the order of 104 M-1. HSA-diligand complex (i.e., HSA-quercetin-Cu2+) was successfully generated when both quercetin and Cu2+ were added to the HSA solution. The stability and free radical scavenging activity of bioactive quercetin during incubation was promoted in the HSA-diligand complex relative to quercetin-Cu2+ complex. Quercetin/Cu2+ system could induce the formation of reactive oxygen species such as hydrogen peroxide (H2O2) and hydroxide radical (·OH), which were significantly suppressed upon HSA binding. Consistently, the cytotoxicity of the quercetin/Cu2+ system to endothelial cells was reduced in the HSA-diligand complex. These results demonstrate the possibility of developing serum albumin-based carriers for the protection of bioactive flavonoids in their nutritional application.
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Affiliation(s)
- Ya-Di Yang
- Jiangxi Key Laboratory of Green Chemistry, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Naihao Lu
- Jiangxi Key Laboratory of Green Chemistry, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Rong Tian
- Jiangxi Key Laboratory of Green Chemistry, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China.
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2
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Taniguchi M, LaRocca CA, Bernat JD, Lindsey JS. Digital Database of Absorption Spectra of Diverse Flavonoids Enables Structural Comparisons and Quantitative Evaluations. JOURNAL OF NATURAL PRODUCTS 2023; 86:1087-1119. [PMID: 36848595 DOI: 10.1021/acs.jnatprod.2c00720] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Flavonoids play diverse roles in plants, comprise a non-negligible fraction of net primary photosynthetic production, and impart beneficial effects in human health from a plant-based diet. Absorption spectroscopy is an essential tool for quantitation of flavonoids isolated from complex plant extracts. The absorption spectra of flavonoids typically consist of two major bands, band I (300-380 nm) and band II (240-295 nm), where the former engenders a yellow color; in some flavonoids the absorption tails to 400-450 nm. The absorption spectra of 177 flavonoids and analogues of natural or synthetic origin have been assembled, including molar absorption coefficients (109 from the literature, 68 measured here). The spectral data are in digital form and can be viewed and accessed at http://www.photochemcad.com. The database enables comparison of the absorption spectral features of 12 distinct types of flavonoids including flavan-3-ols (e.g., catechin, epigallocatechin), flavanones (e.g., hesperidin, naringin), 3-hydroxyflavanones (e.g., taxifolin, silybin), isoflavones (e.g., daidzein, genistein), flavones (e.g., diosmin, luteolin), and flavonols (e.g., fisetin, myricetin). The structural features that give rise to shifts in wavelength and intensity are delineated. The availability of digital absorption spectra for diverse flavonoids facilitates analysis and quantitation of these valuable plant secondary metabolites. Four examples are provided of calculations─multicomponent analysis, solar ultraviolet photoprotection, sun protection factor (SPF), and Förster resonance energy transfer (FRET)─for which the spectra and accompanying molar absorption coefficients are sine qua non.
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Affiliation(s)
- Masahiko Taniguchi
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Connor A LaRocca
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Jake D Bernat
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Jonathan S Lindsey
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
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3
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Tian Y, Li C, Zeng F, Yu C, Xia Z, Huang Y. Study the interactions between multiple flavonoids and bovine serum albumin by the developed equilibrium dialysis. J Chromatogr B Analyt Technol Biomed Life Sci 2022; 1212:123515. [DOI: 10.1016/j.jchromb.2022.123515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 09/13/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022]
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4
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Zhou L, Lu N, Pi X, Jin Z, Tian R. Bovine Serum Albumin as a Potential Carrier for the Protection of Bioactive Quercetin and Inhibition of Cu(II) Toxicity. Chem Res Toxicol 2022; 35:529-537. [PMID: 35175047 DOI: 10.1021/acs.chemrestox.2c00001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Considering the protective ability of proteins and the potential toxicity of free Cu(II), it was proposed herein that the co-presence of protein could play an important role in suppressing the toxicity of free Cu(II) to the stability of bioactive quercetin if a flavonoid-protein-Cu(II) complex could be formed. In this study, the interaction between quercetin (a major flavonoid in the human diet) and bovine serum albumin (BSA) was investigated in the absence and presence of free Cu(II). The results demonstrated that both quercetin and free Cu(II) had a strong ability to quench the intrinsic fluorescence of BSA through a static procedure (i.e., formation of a BSA-monoligand complex). Site marker competitive experiments illustrated that the binding of both quercetin and Cu(II) to BSA mainly took place in subdomain IIA. The quenching process of free Cu(II) with BSA was easily affected by quercetin, and the increased binding capacity possibly resulted from the generation of a ternary quercetin-BSA-Cu(II) complex. The stability and free radical scavenging activity of bioactive quercetin during incubation was promoted in the BSA-diligand complex relative to a quercetin-Cu(II) complex. A quercetin-Cu(II) system could generate reactive oxygen species such as hydrogen peroxide (H2O2) and hydroxyl radicals (•OH), which were significantly inhibited upon BSA binding. Consistently, the cytotoxicity of the quercetin-Cu(II) system to endothelial cells was decreased in the BSA-diligand complex, where the co-presence of BSA played an important role. These results suggest the possibility and advantage of developing albumin-based carriers for the protection of bioactive components and suppression of Cu(II) toxicity in their biomedical and nutritional applications.
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Affiliation(s)
- Lan Zhou
- Jiangxi Key Laboratory of Green Chemistry, MOE Key Laboratory of Functional Small Organic Molecule, and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Naihao Lu
- Jiangxi Key Laboratory of Green Chemistry, MOE Key Laboratory of Functional Small Organic Molecule, and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Xuefen Pi
- Yangxin No. 1 Middle School in Hubei Province, Huangshi, Hubei 435200, China
| | - Zelong Jin
- Jiangxi Key Laboratory of Green Chemistry, MOE Key Laboratory of Functional Small Organic Molecule, and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Rong Tian
- Jiangxi Key Laboratory of Green Chemistry, MOE Key Laboratory of Functional Small Organic Molecule, and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
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ÖZTÜRK KİRAZ A, YALÇIN F. Structure-Activity and Antioxidant Properties of Quercetin and Its Co2+ Chelate. INTERNATIONAL JOURNAL OF SECONDARY METABOLITE 2021. [DOI: 10.21448/ijsm.954992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Jomova K, Hudecova L, Lauro P, Simunková M, Barbierikova Z, Malcek M, Alwasel SH, Alhazza IM, Rhodes CJ, Valko M. The effect of Luteolin on DNA damage mediated by a copper catalyzed Fenton reaction. J Inorg Biochem 2021; 226:111635. [PMID: 34717250 DOI: 10.1016/j.jinorgbio.2021.111635] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 10/11/2021] [Accepted: 10/13/2021] [Indexed: 12/11/2022]
Abstract
Luteolin has been reviewed as a flavonoid possessing potential cardioprotective, anti-inflammatory, anti-cancer activities. Having multiple biological effects, luteolin may act as either an antioxidant or a pro-oxidant. In this work, the protective role of copper(II)-chelation by luteolin on DNA damage via the Cu-Fenton reaction was studied. EPR and UV-vis spectroscopic data demonstrated that the luteolin, lacking 3-OH group, chelates to Cu(II) via the 5-OH and 4-CO groups, respectively. EPR spin trapping experiments using DMPO spin trap confirmed that the coordination of luteolin to Cu(II) significantly suppressed formation of hydroxyl and superoxide radicals (by 80%) in a Cu-Fenton system. Absorption titrations showed that the chelation of Cu(II) by luteolin slightly increased the mild intercalation strength of its interaction with DNA, as compared with free luteolin. Comparison with kaempferol and quercetin revealed, that the strength of the interaction between the free flavonoids/Cu-flavonoid complexes with DNA is only mildly affected by the presence/absence of 3-OH group. Due to the differences in the sensitivities of absorption titrations and viscometry, the latter confirmed weaker DNA intercalating efficiency of Cu-luteolin complex than does free luteolin. A dose dependent protective effect of luteolin against ROS-induced DNA damage was observed using gel electrophoresis. This effect was more pronounced compared to quercetin and kaempferol. In conclusion, the administration of luteolin to patients suffering from oxidative stress-related diseases with disturbed Cu-metabolism such as Alzheimer's diseases (antioxidant effect) and certain cancers (prooxidant effect) may have several health benefits.
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Affiliation(s)
- Klaudia Jomova
- Department of Chemistry, Faculty of Natural Sciences, Constantine The Philosopher University in Nitra, 949 74, Nitra, Slovakia
| | - Lenka Hudecova
- Department of Chemistry, Faculty of Natural Sciences, Constantine The Philosopher University in Nitra, 949 74, Nitra, Slovakia
| | - Peter Lauro
- Department of Chemistry, Faculty of Natural Sciences, Constantine The Philosopher University in Nitra, 949 74, Nitra, Slovakia
| | - Miriama Simunková
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, 812 37 Bratislava, Slovakia
| | - Zuzana Barbierikova
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, 812 37 Bratislava, Slovakia
| | - Michal Malcek
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, 812 37 Bratislava, Slovakia
| | - Saleh H Alwasel
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ibrahim M Alhazza
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | | | - Marian Valko
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, 812 37 Bratislava, Slovakia; Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia.
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Huang Z, Zeng Y, Liu W, Wang S, Shen C, Shi B. Effects of metals released in strong-flavor baijiu on the evolution of aroma compounds during storage. Food Sci Nutr 2020; 8:1904-1913. [PMID: 32328256 PMCID: PMC7174237 DOI: 10.1002/fsn3.1475] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 01/15/2020] [Accepted: 01/31/2020] [Indexed: 11/25/2022] Open
Abstract
Storage is essential in improving the quality of strong-flavor baijiu (SFB). Here, we investigated the release behaviors of metals from containers into SFB and their effects on the evolution of aroma compounds during storage. Twenty-six metals were identified in SFB samples. The concentrations of Na, K, Ca, Mg, Al, and Fe obviously increased after storing in pottery jar, whereas those of Fe and Cu greatly increased after storing in stainless-steel vessel. The volatility of most esters, alcohols, ketone, furan, and aldehyde decreased, whereas that of most acids increased after adding the metal ions into fresh SFB. The fluorescence intensity of SFB decreased with increased aging time in pottery jar, whereas the fluorescence intensity of acids was quenched with adding Fe3+ and Cu2+. All these results suggested that some metals released from containers had binding affinities with acids, thereby reducing SFB organoleptic stimulation by forming metal-aroma compound complexes during storage.
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Affiliation(s)
- Zhangjun Huang
- College of Biomass Science and EngineeringSichuan UniversityChengduChina
| | - Yunhang Zeng
- College of Biomass Science and EngineeringSichuan UniversityChengduChina
| | - Wenhu Liu
- National Engineering Research Center of Solid‐State BrewingLuzhouChina
- Luzhou Laojiao Co. LtdLuzhouChina
| | - Songtao Wang
- National Engineering Research Center of Solid‐State BrewingLuzhouChina
- Luzhou Laojiao Co. LtdLuzhouChina
| | - Caihong Shen
- National Engineering Research Center of Solid‐State BrewingLuzhouChina
- Luzhou Laojiao Co. LtdLuzhouChina
| | - Bi Shi
- College of Biomass Science and EngineeringSichuan UniversityChengduChina
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8
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Multi-spectroscopic and computational evaluation on the binding of sinapic acid and its Cu(II) complex with bovine serum albumin. Food Chem 2019; 301:125254. [DOI: 10.1016/j.foodchem.2019.125254] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 07/23/2019] [Accepted: 07/24/2019] [Indexed: 11/20/2022]
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9
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Mondal P, Bose A. Spectroscopic overview of quercetin and its Cu(II) complex interaction with serum albumins. ACTA ACUST UNITED AC 2019; 9:115-121. [PMID: 31334043 PMCID: PMC6637219 DOI: 10.15171/bi.2019.15] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 03/08/2019] [Accepted: 03/10/2019] [Indexed: 11/24/2022]
Abstract
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Introduction:
Flavonoids are widely used as dietary supplements, and thus, play a significant role in the research field. In recent time, the interaction of flavonoid-metal complexes with serum albumin (SA) has widely been studied since the complexation poses a significant impact on biological activities. Additionally, the binding nature of flavonoids with SA gets modified in the presence of metal ions.
Methods: In the present review, we studied the interaction of quercetin (Qu), a well-known flavonoid, and its Cu2+ complexes with SA to provide sufficient information about the beneficial role of metal-flavonoid complexes over free flavonoids.
Results: Complexation with Cu(II) ion may alter the mode of binding of Qu with SAs. The strength of binding might be increased in the presence of Cu(II) as evidenced by the binding constant calculation. However, the drug binding site in bovine serum albumin (BSA) and human serum albumin (HSA) are not altered during the complexation process.
Conclusion: To enhance the pharmaceutical outcomes of Qu molecules, one may use Qu-Cu(II) complex for the development and delivery of the small molecules.
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Affiliation(s)
- Prasenjit Mondal
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata 700073, India
| | - Adity Bose
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata 700073, India
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10
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Cheng D, Wang X, Tang J, Zhang X, Wang C, Li H. Characterization of the binding mechanism and conformational changes of bovine serum albumin upon interaction with aluminum-maltol: a spectroscopic and molecular docking study. Metallomics 2019; 11:1625-1634. [DOI: 10.1039/c9mt00088g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The widespread use of aluminum in the treatment of drinking water, food, agriculture and pharmaceuticals has greatly increased the risk of human exposure to excess aluminum, which is a serious health hazard to human beings.
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Affiliation(s)
- Dai Cheng
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science & Technology, Tianjin
- Tianjin
- China
- Beijing Engineering and Technology Research Center of Food Additives
| | - Xuerui Wang
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science & Technology, Tianjin
- Tianjin
- China
- Demonstration Center of Food Quality and Safety Testing Technology
| | - Jinlei Tang
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science & Technology, Tianjin
- Tianjin
- China
- Demonstration Center of Food Quality and Safety Testing Technology
| | - Xinyu Zhang
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science & Technology, Tianjin
- Tianjin
- China
- Demonstration Center of Food Quality and Safety Testing Technology
| | - Chunling Wang
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science & Technology, Tianjin
- Tianjin
- China
- Demonstration Center of Food Quality and Safety Testing Technology
| | - He Li
- Beijing Engineering and Technology Research Center of Food Additives
- Beijing Technology & Business University (BTBU)
- Beijing 100048
- China
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11
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Martínez VR, Aguirre MV, Todaro JS, Piro OE, Echeverría GA, Ferrer EG, Williams PAM. Azilsartan and its Zn(II) complex. Synthesis, anticancer mechanisms of action and binding to bovine serum albumin. Toxicol In Vitro 2018; 48:205-220. [PMID: 29408668 DOI: 10.1016/j.tiv.2018.01.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 12/15/2017] [Accepted: 01/14/2018] [Indexed: 02/08/2023]
Abstract
Azilsartan is the eighth approved member of angiotensin II receptor blockers for hypertension treatment. Considering that some drugs have additional effects when administered, we studied its effects and mechanisms of action on a human lung cancer cell line A549. We have also modified the structure of the drug by complexation with Zn(II) cation and assayed the anticancer effect. The crystal structure of the new binuclear Zn(II) complex, for short [Zn2(azil)2(H2O)4]·2H2O (ZnAzil), was determined by X-ray diffraction methods. The zinc ions are bridged by azilsartan ligands through their carboxylate oxygen and oxadiazol nitrogen atoms. The compounds were examined for their cytotoxic effects against human lung fibroblast (MRC5) and human lung cancer (A549) cell lines. Azilsartan displayed low cytotoxic effects at 150 μM concentrations in A549 human lung cancer cells but the higher effect measured for the Zn complex suggested that this compound may act as an anticancer agent. An apoptotic oxidative stress mechanism of action via the mitochondrial-dependent intrinsic pathway has been determined. Besides, the compounds exerted weak cytotoxic effects in the normal lung related cell line MRC5. Binding constants of the complex formed between each compound and bovine serum albumin (BSA) are in the intermediate range, hence suggesting that azilsartan and ZnAzil could be bonded and transported by BSA.
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Affiliation(s)
- Valeria R Martínez
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP), 120 N° 1465, La Plata, Argentina
| | - María V Aguirre
- Laboratorio de Investigaciones Bioquímicas, Facultad de Medicina, UNNE, Moreno 1240, Corrientes, Argentina
| | - Juan S Todaro
- Laboratorio de Investigaciones Bioquímicas, Facultad de Medicina, UNNE, Moreno 1240, Corrientes, Argentina
| | - Oscar E Piro
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata y IFLP (CONICET, CCT La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Gustavo A Echeverría
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata y IFLP (CONICET, CCT La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP), 120 N° 1465, La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP), 120 N° 1465, La Plata, Argentina.
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12
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UV-Vis spectroscopy combined with chemometric study on the interactions of three dietary flavonoids with copper ions. Food Chem 2018; 263:208-215. [PMID: 29784309 DOI: 10.1016/j.foodchem.2018.05.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 04/13/2018] [Accepted: 05/02/2018] [Indexed: 11/22/2022]
Abstract
The complex formation between a copper ion and the dietary flavonoid quercetin (QU) and its two glycosides hyperin (HY) and rutin (RU) was studied by the combined use of spectroscopic measurement and the chemometric method. The spectral changes of pH titration revealed two successively formed deprotonated species of QU: the first formed species was proposed to be the 3-hydroxyl group deprotonated QU, and the second was the quinone form QU, which was formed by oxidation after the hydroxyl groups in the B-ring were deprotonated at high pH values. Similar results were obtained for HY and RU with two deprotonated species forming at high pH values. UV/visible spectroscopy showed successive formation of CuL2 and CuL species of QU at pH 6.0, while only Cu2L was formed for HY and RU at this pH. Glycoside moieties in the C-ring of flavonoids decrease the conditional associated constants between flavonoids and Cu2+.
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13
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Sengupta P, Sardar PS, Roy P, Dasgupta S, Bose A. Investigation on the interaction of Rutin with serum albumins: Insights from spectroscopic and molecular docking techniques. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 183:101-110. [PMID: 29702339 DOI: 10.1016/j.jphotobiol.2018.04.019] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 03/26/2018] [Accepted: 04/13/2018] [Indexed: 10/17/2022]
Abstract
The binding interaction of Rutin, a flavonoid, with model transport proteins, bovine serum albumin (BSA) and human serum albumin (HSA), were investigated using different spectroscopic techniques, such as fluorescence, time-resolved single photon counting (TCSPC) and circular dichroism (CD) spectroscopy as well as molecular docking method. The emission studies revealed that the fluorescence quenching of BSA/HSA by Rutin occurred through a simultaneous static and dynamic quenching process, and we have evaluated both the quenching constants individually. The binding constants of Rutin-BSA and Rutin-HSA system were found to be 2.14 × 106 M-1 and 2.36 × 106 M-1 at 298 K respectively, which were quite high. Further, influence of some biologically significant metal ions (Ca2+, Zn2+ and Mg2+) on binding of Rutin to BSA and HSA were also investigated. Thermodynamic parameters justified the involvement of hydrogen bonding and weak van der Waals forces in the interaction of Rutin with both BSA and HSA. Further a site-marker competitive experiment was performed to evaluate Rutin binding site in the albumins. Additionally, the CD spectra of BSA and HSA revealed that the secondary structure of the proteins was perturbed in the presence of Rutin. Finally protein-ligand docking studies have also been performed to determine the probable location of the ligand molecule.
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Affiliation(s)
- Priti Sengupta
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata 700073, West Bengal, India
| | - Pinki Saha Sardar
- Department of Chemistry, The Bhawanipur Education Society College, Kolkata 700020, West Bengal, India
| | - Pritam Roy
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal, India
| | - Swagata Dasgupta
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal, India
| | - Adity Bose
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata 700073, West Bengal, India.
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14
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Chaves OA, Jesus CSH, Henriques ES, Brito RMM, Serpa C. In situ ultra-fast heat deposition does not perturb the structure of serum albumin. Photochem Photobiol Sci 2018; 15:1524-1535. [PMID: 27841431 DOI: 10.1039/c6pp00209a] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
MnTPPS is a metallic water soluble porphyrin with high potential to be used as a contrast agent in photoacoustic tomography. In order to fully understand the interaction between MnTPPS and serum albumin and to investigate the effect of the light induced fast in situ heat deposition by MnTPPS in the protein, we performed several experimental studies using fluorescence and circular dichroism spectroscopies, as well as photoacoustic calorimetry. To identify the possible binding site(s) of the metalloporphyrin in serum albumin and to help interpret the spectroscopic results, a molecular docking exercise was also carried out. The fluorescence data indicate a 1 : 1 stoichiometry for the complex BSA : MnTPPS. The molecular docking results suggest one binding site at the subdomain IB of albumin, where Trp-134 is found, as the main binding site for MnTPPS. The CD data indicate no significant conformational changes of the BSA secondary structure upon MnTPPS binding and even after several minutes of laser excitation of MnTPPS. TR-PAC results show that the in situ heat deposition from MnTPPS does not cause any significant transient conformational change to the BSA structure. In conclusion, this work demonstrates that MnTPPS, in addition to the necessary physical and chemical properties to be used as a contrast agent in photoacoustic tomography, can be effectively carried by albumin and that in situ heat release following light absorption does not cause any significant damage to the protein structure.
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Affiliation(s)
- Otávio A Chaves
- ICE, Chemistry Department, Universidade Federal Rural do Rio de Janeiro, 23890-000, Seropédica-RJ, Brazil and CQC, Chemistry Department, University of Coimbra, 3004-535, Coimbra, Portugal.
| | - Catarina S H Jesus
- CQC, Chemistry Department, University of Coimbra, 3004-535, Coimbra, Portugal.
| | - Elsa S Henriques
- Center for Neuroscience and Cell Biology, University of Coimbra, 3004-535, Coimbra, Portugal
| | - Rui M M Brito
- CQC, Chemistry Department, University of Coimbra, 3004-535, Coimbra, Portugal.
| | - Carlos Serpa
- CQC, Chemistry Department, University of Coimbra, 3004-535, Coimbra, Portugal.
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15
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Yuan L, Liu M, Sun B, Liu J, Wei X, Wang Z, Wang B, Han J. Calorimetric and spectroscopic studies on the competitive behavior between (−)-epigallocatechin-3-gallate and 5-fluorouracil with human serum albumin. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.10.049] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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16
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McCabe JW, Vangala R, Angel LA. Binding Selectivity of Methanobactin from Methylosinus trichosporium OB3b for Copper(I), Silver(I), Zinc(II), Nickel(II), Cobalt(II), Manganese(II), Lead(II), and Iron(II). JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:2588-2601. [PMID: 28856622 DOI: 10.1007/s13361-017-1778-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 08/03/2017] [Accepted: 08/04/2017] [Indexed: 05/22/2023]
Abstract
Methanobactin (Mb) from Methylosinus trichosporium OB3b is a member of a class of metal binding peptides identified in methanotrophic bacteria. Mb will selectively bind and reduce Cu(II) to Cu(I), and is thought to mediate the acquisition of the copper cofactor for the enzyme methane monooxygenase. These copper chelating properties of Mb make it potentially useful as a chelating agent for treatment of diseases where copper plays a role including Wilson's disease, cancers, and neurodegenerative diseases. Utilizing traveling wave ion mobility-mass spectrometry (TWIMS), the competition for the Mb copper binding site from Ag(I), Pb(II), Co(II), Fe(II), Mn(II), Ni(II), and Zn(II) has been determined by a series of metal ion titrations, pH titrations, and metal ion displacement titrations. The TWIMS analyses allowed for the explicit identification and quantification of all the individual Mb species present during the titrations and measured their collision cross-sections and collision-induced dissociation patterns. The results showed Ag(I) and Ni(II) could irreversibly bind to Mb and not be effectively displaced by Cu(I), whereas Ag(I) could also partially displace Cu(I) from the Mb complex. At pH ≈ 6.5, the Mb binding selectivity follows the order Ag(I)≈Cu(I)>Ni(II)≈Zn(II)>Co(II)>>Mn(II)≈Pb(II)>Fe(II), and at pH 7.5 to 10.4 the order is Ag(I)>Cu(I)>Ni(II)>Co(II)>Zn(II)>Mn(II)≈Pb(II)>Fe(II). Breakdown curves of the disulfide reduced Cu(I) and Ag(I) complexes showed a correlation existed between their relative stability and their compact folded structure indicated by their CCS. Fluorescence spectroscopy, which allowed the determination of the binding constant, compared well with the TWIMS analyses, with the exception of the Ni(II) complex. Graphical abstract ᅟ.
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Affiliation(s)
- Jacob W McCabe
- Department of Chemistry, Texas A&M University-Commerce, Commerce, TX, 75428, USA
| | - Rajpal Vangala
- Department of Chemistry, Texas A&M University-Commerce, Commerce, TX, 75428, USA
| | - Laurence A Angel
- Department of Chemistry, Texas A&M University-Commerce, Commerce, TX, 75428, USA.
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17
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Martini N, Parente JE, Toledo ME, Escudero GE, Laino CH, Martínez Medina JJ, Echeverría GA, Piro OE, Lezama L, Williams PAM, Ferrer EG. Evidence of promising biological-pharmacological activities of the sertraline-based copper complex: (SerH 2) 2[CuCl 4]. J Inorg Biochem 2017. [PMID: 28622579 DOI: 10.1016/j.jinorgbio.2017.05.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
In the current study the ability of copper complex to exert multiple biological activities is combined with the pharmacological action of sertraline (SerH2Cl, antidepressant drug). The hydrated and anhydrous forms of the tetrachlorocuprate(II) salts, namely (SerH2)2[CuCl4]·½H2O and (SerH2)2[CuCl4], were synthesized and characterized by physicochemical methods. The crystal structures were determined by X-ray diffraction methods. The hydrate complex crystallizes in the monoclinic P21 space group with a=8.0807(2) Å, b=36.2781(8) Å, c=12.6576(3) Å, β=95.665(2)°, and Z=4 molecules per unit cell and the un-hydrate in P21 with a=13.8727(6) Å, b=7.5090(3) Å, c=18.618(1) Å, β=104.563(6)°, and Z=2. It has been suggested that Cu(II) ions might be critical in the development of mood disorders, showed potent biocidal activity, and also acted as analgesic adjuvant. To improve sertraline efficiency, the antidepressant and analgesic activities of the complex have been assessed in rats denoting a marked synergistic effect. Antithyroid and antimicrobial activities were also evaluated. Because depressive disorders and hyperthyroidism diseases led to an oxidative stress state, antioxidant capability has also been tested. The complex behaved as a good superoxide radical scavenger (IC50=6.3×10-6M). The ability of the complex to act as bromoperoxidase mimic was assessed. A pseudo-first order constant of k=0.157±0.007min-1 has been determined. The complex evidences promising biological-pharmacological activities and the albumin binding studies showed a Kb of 2.90×103M-1 showing an improvement in the uptake of sertraline by albumin at 8h incubation (time required for effective interaction of sertraline with the protein).
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Affiliation(s)
- Nancy Martini
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962-(B1900AVV)-1900 La Plata, Argentina
| | - Juliana E Parente
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962-(B1900AVV)-1900 La Plata, Argentina
| | - Maria Eugenia Toledo
- Instituto de Biotecnología del CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), Av Luis Vernet y Apostol Felipe, 5300, La Rioja, Argentina
| | - Graciela E Escudero
- Instituto de Farmacia y Bioquímica del CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), Av Luis Vernet y Apostol Felipe, 5300 La Rioja, Argentina
| | - Carlos H Laino
- Instituto de Biotecnología del CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), Av Luis Vernet y Apostol Felipe, 5300, La Rioja, Argentina
| | - Juan José Martínez Medina
- Universidad Nacional del Chaco Austral, Comandante Fernández 755, CP: 3700 Presidencia Roque Sáenz Peña, Chaco, Argentina
| | - Gustavo A Echeverría
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP (CONICET, CCT-La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Oscar E Piro
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP (CONICET, CCT-La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Luis Lezama
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, PO Box 644, 48080 Bilbao, Spain; BCMaterials, Parque científico y Tecnológico de Bizkaia, Edificio 500-1, 48160 Derio, Spain
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962-(B1900AVV)-1900 La Plata, Argentina
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962-(B1900AVV)-1900 La Plata, Argentina.
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18
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Brodowska K, Correia I, Garribba E, Marques F, Klewicka E, Łodyga-Chruscińska E, Pessoa JC, Dzeikala A, Chrusciński L. Coordination ability and biological activity of a naringenin thiosemicarbazone. J Inorg Biochem 2016; 165:36-48. [DOI: 10.1016/j.jinorgbio.2016.09.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 09/18/2016] [Accepted: 09/29/2016] [Indexed: 12/15/2022]
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19
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Sánchez-de-Diego C, Mármol I, Pérez R, Gascón S, Rodriguez-Yoldi MJ, Cerrada E. The anticancer effect related to disturbances in redox balance on Caco-2 cells caused by an alkynyl gold(I) complex. J Inorg Biochem 2016; 166:108-121. [PMID: 27842247 DOI: 10.1016/j.jinorgbio.2016.11.009] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 10/17/2016] [Accepted: 11/03/2016] [Indexed: 12/25/2022]
Abstract
The alkynyl gold(I) derivative [Au(C≡CPh)(PTA)] (PTA=1,3,5-triaza-7-phosphaadamantane) induces apoptosis in colorectal carcinoma tumour cells (Caco-2) without affecting to normal enterocytes. [Au(C≡CPh)(PTA)] is a slight lipophilic drug, stable in PBS (Phosphate Buffered Saline) and able to bind BSA (Bovin Serum Albumin) by hydrophobic interactions. Once inside the cell, [Au(C≡CPh)(PTA)] targets seleno proteins such as Thioredoxin Reductase 1, increasing ROS (Reactive Oxygen Species) levels, reducing cell viability and proliferation and inducing mitochondrial apoptotic pathway, pro-apoptotic and anti-apoptotic protein imbalance, loss of mitochondrial membrane potential, cytochrome c release and activation of caspases 9 and 3. Moreover, unlike other metal-based drugs such as cisplatin, [Au(C≡CPh)(PTA)] does not target nucleic acid, reducing the risk of side mutation in the DNA. In consequence, our results predict a promising future for [Au(C≡CPh)(PTA)] as a chemotherapeutic agent for colorectal carcinoma.
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Affiliation(s)
- Cristina Sánchez-de-Diego
- Departamento de Farmacología y Fisiología. Unidad de Fisiología, Facultad de Veterinaria, Universidad de Zaragoza, 50013, Zaragoza, CIBERobn, Spain
| | - Inés Mármol
- Departamento de Farmacología y Fisiología. Unidad de Fisiología, Facultad de Veterinaria, Universidad de Zaragoza, 50013, Zaragoza, CIBERobn, Spain
| | - Rocío Pérez
- Departamento de Farmacología y Fisiología. Unidad de Fisiología, Facultad de Veterinaria, Universidad de Zaragoza, 50013, Zaragoza, CIBERobn, Spain
| | - Sonia Gascón
- Departamento de Farmacología y Fisiología. Unidad de Fisiología, Facultad de Veterinaria, Universidad de Zaragoza, 50013, Zaragoza, CIBERobn, Spain
| | - Mª Jesús Rodriguez-Yoldi
- Departamento de Farmacología y Fisiología. Unidad de Fisiología, Facultad de Veterinaria, Universidad de Zaragoza, 50013, Zaragoza, CIBERobn, Spain.
| | - Elena Cerrada
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009 Zaragoza, Spain.
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20
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Naso LG, Lezama L, Valcarcel M, Salado C, Villacé P, Kortazar D, Ferrer EG, Williams PAM. Bovine serum albumin binding, antioxidant and anticancer properties of an oxidovanadium(IV) complex with luteolin. J Inorg Biochem 2016; 157:80-93. [PMID: 26828287 DOI: 10.1016/j.jinorgbio.2016.01.021] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 01/16/2016] [Accepted: 01/18/2016] [Indexed: 10/22/2022]
Abstract
Chemotherapy using metal coordination compounds for cancer treatment is the work of the ongoing research. Continuing our research on the improvement of the anticancer activity of natural flavonoids by metal complexation, a coordination compound of the natural antioxidant flavone luteolin (lut) and the oxidovanadium(IV) cation has been synthesized and characterized. Using different physicochemical measurements some structural aspects of [VO(lut)(H2O)2]Na·3H2O (VOlut) were determined. The metal coordinated to two cis-deprotonated oxygen atoms (ArO(-)) of the ligand and two H2O molecules. Magnetic measurements in solid state indicated the presence of an effective exchange pathway between adjacent vanadium ions. VOlut improved the antioxidant capacity of luteolin only against hydroxyl radical. The antitumoral effects were evaluated on MDAMB231 breast cancer and A549 lung cancer cell lines. VOlut exhibited higher viability inhibition (IC50=17 μM) than the ligand on MDAMB231 cells but they have the same behavior on A549 cells (ca. IC50=60 μM). At least oxidative stress processes were active during cancer cell-killing. When metals chelated through the carbonyl group and one adjacent OH group of the flavonoid an effective improvement of the biological properties has been observed. In VOlut the different coordination may be the cause of the small improvement of some of the tested properties of the flavonoid. Luteolin and VOlut could be distributed and transported in vivo. Luteolin interacted in the microenvironment of the tryptophan group of the serum binding protein, BSA, by means of electrostatic forces and its complex bind the protein by H bonding and van der Waals interactions.
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Affiliation(s)
- Luciana G Naso
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-(B1900AVV), 1900 La Plata, Argentina
| | - Luis Lezama
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain; BCMaterials, Parque científico y Tecnológico de Bizkaia, Edificio 500-1, 48160 Derio, Spain
| | - María Valcarcel
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Clarisa Salado
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Patricia Villacé
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Danel Kortazar
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-(B1900AVV), 1900 La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-(B1900AVV), 1900 La Plata, Argentina.
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21
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Characterization of the binding of flavanone hesperetin with chicken egg lysozyme using spectroscopic techniques: effect of pH on the binding. J INCL PHENOM MACRO 2015. [DOI: 10.1007/s10847-015-0578-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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22
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Liu Y, Guo M. Studies on transition metal-quercetin complexes using electrospray ionization tandem mass spectrometry. Molecules 2015; 20:8583-94. [PMID: 25985359 PMCID: PMC6272614 DOI: 10.3390/molecules20058583] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 05/03/2015] [Accepted: 05/05/2015] [Indexed: 11/16/2022] Open
Abstract
To systematically study the effects of the number of d electrons of the first transition metal ions (Fe, Co, Ni, Cu and Zn) on the formation and stability of metal flavonoid complexes, we took the quercetin/M2+ complex as a model system to investigate the structures and properties of these complexes. Based on considerable structural information obtained through ESI-MSn, all of the first transition metal ions (Fe2+, Co2+, Ni2+, Cu2+ and Zn2+) were found to form different complexes with quercetin, while with the number of chelating flavonoids decreasing along with the reduction of the metal ionic radius. Quercetin forms different complexes with the above metal divalent ions through its 5-OH and 4-carbonyl groups; the complex stability is highly dependent on both the metallic ion and the flavonoid chelator itself. As for the central ion (M2+), when chelated with quercetin to form the complex, the stability of the complex decreased in the following order: Cu2+ > Ni2+ > Co2+ > Fe2+ > Zn2+. With flavonoid: metal stoichiometries at 2:1, the complexes formed between quercetin and metal ions (Fe2+, Ni2+, Co2+ and Zn2+) have the similar fragmentation mechanism, while Cu2+ displayed different fragmentation mechanism due to the concurrent oxidation.
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Affiliation(s)
- Yuanzhen Liu
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan 430074, China.
| | - Mingquan Guo
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan 430074, China.
- The Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA.
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23
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Islas MS, Naso LG, Lezama L, Valcarcel M, Salado C, Roura-Ferrer M, Ferrer EG, Williams PAM. Insights into the mechanisms underlying the antitumor activity of an oxidovanadium(IV) compound with the antioxidant naringenin. Albumin binding studies. J Inorg Biochem 2015; 149:12-24. [PMID: 25957189 DOI: 10.1016/j.jinorgbio.2015.04.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 04/17/2015] [Accepted: 04/19/2015] [Indexed: 12/16/2022]
Abstract
Naringenin, a natural antioxidant present in grapefruit, oranges and the skin of tomatoes showed low antioxidant properties among other flavonoids due to its structural characteristics. Since many flavonoids were shown to have cell-killing and antioxidant activities, naringenin was investigated herein. In parallel with its antioxidant activities the flavonoid showed very low cytotoxicity at concentrations up to 100 μM against lung (A549) and breast (SKBr3 and MDAMB231) cancer cell lines. Furthermore, a newly-synthesized and characterized complex of naringenin and oxidovanadium(IV) ([V(IV)O(nar)2] · 2H2O, VOnar, with weak ferromagnetic coupling) was also studied. As a result, VOnar acted as a better compound on cell-killing and antioxidant activities (in vitro) than naringenin. The anti-proliferative effect of VOnar was accompanied by reactive oxygen species (ROS) generation, cell membrane and DNA damages, cell cycle arrest, caspase 3/7 activation and mitochondrial potential reduction. The higher parameters observed for the MDAMB231 cell line have been related to its low glutathione (GSH) content. The assays of the interaction of bovine serum albumin (BSA) with the complex showed the affinity of protein toward it and that there is only one binding site on the BSA molecule. However, metal complexation decreased the binding affinity to BSA of naringenin probably due to a steric hindrance of the complex.
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Affiliation(s)
- María S Islas
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-B1900AVV, 1900 La Plata, Argentina
| | - Luciana G Naso
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-B1900AVV, 1900 La Plata, Argentina
| | - Luis Lezama
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain; BCMaterials, Parque científico y Tecnológico de Bizkaia, Edificio 500-1, 48160 Derio, Spain
| | - María Valcarcel
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Clarisa Salado
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Meritxell Roura-Ferrer
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-B1900AVV, 1900 La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-B1900AVV, 1900 La Plata, Argentina.
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24
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Peng X, Qi W, Huang R, Su R, He Z. Elucidating the influence of gold nanoparticles on the binding of salvianolic acid B and rosmarinic acid to bovine serum albumin. PLoS One 2015; 10:e0118274. [PMID: 25861047 PMCID: PMC4393081 DOI: 10.1371/journal.pone.0118274] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Accepted: 01/13/2015] [Indexed: 12/21/2022] Open
Abstract
Salvianolic acid B and rosmarinic acid are two main water-soluble active ingredients from Salvia miltiorrhiza with important pharmacological activities and clinical applications. The interactions between salvianolic acid B (or rosmarinic acid) and bovine serum albumin (BSA) in the presence and absence of gold nanoparticles (Au NPs) with three different sizes were investigated by using biophysical methods for the first time. Experimental results proved that two components quenched the fluorescence of BSA mainly through a static mechanism irrespective of the absence or presence of Au NPs. The presence of Au NPs decreased the binding constants of salvianolic acid B with BSA from 27.82% to 10.08%, while Au NPs increased the affinities of rosmarinic acid for BSA from 0.4% to 14.32%. The conformational change of BSA in the presence of Au NPs (caused by a noncompetitive binding between Au NPs and drugs at different albumin sites) induced changeable affinity and binding distance between drugs and BSA compared with no Au NPs. The competitive experiments revealed that the site I (subdomain IIA) of BSA was the primary binding site for salvianolic acid B and rosmarinic acid. Additionally, two compounds may induce conformational and micro-environmental changes of BSA. The results would provide valuable binding information between salvianolic acid B (or rosmarinic acid) and BSA, and also indicated that the Au NPs could alter the interaction mechanism and binding capability of drugs to BSA, which might be beneficial to understanding the pharmacokinetics and biological activities of the two drugs.
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Affiliation(s)
- Xin Peng
- School of Life Sciences, Tianjin University, Tianjin 300072, PR China
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Wei Qi
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
- State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, PR China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, PR China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
| | - Renliang Huang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China
| | - Rongxin Su
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
- State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, PR China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, PR China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
| | - Zhimin He
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
- State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, PR China
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25
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Chen M, Rong L, Chen X. A simple and sensitive detection of glutamic-pyruvic transaminase activity based on fluorescence quenching of bovine serum albumin. RSC Adv 2015. [DOI: 10.1039/c5ra24162f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
It is well known that Cu(ii) can coordinate withl-alanine (Cu–Ala), which can be destroyed through the addition of glutamic-pyruvic transaminase (GPT) since GPT can effectively catalyze the conversion ofl-alanine into keto-acetic acid.
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Affiliation(s)
- Miao Chen
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- China
| | - Liya Rong
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- China
| | - Xiaoqing Chen
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- China
- Collaborative Innovation Center of Resource-conserving & Environment-friendly Society and Ecological Civilization
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26
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Tang L, Jia W, Zhang D. The effects of experimental conditions of fluorescence quenching on the binding parameters of apigenin to bovine serum albumin by response surface methods. LUMINESCENCE 2013; 29:344-51. [DOI: 10.1002/bio.2550] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 04/05/2013] [Accepted: 05/10/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Lin Tang
- College of Life Science; Shandong Normal University; Jinan People's Republic of China
| | - Wanteng Jia
- College of Life Science; Shandong Normal University; Jinan People's Republic of China
| | - Dong Zhang
- College of Life Science; Shandong Normal University; Jinan People's Republic of China
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27
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Niu X, Gao X, Wang H, Wang X, Wang S. Insight into the dynamic interaction between different flavonoids and bovine serum albumin using molecular dynamics simulations and free energy calculations. J Mol Model 2012; 19:1039-47. [PMID: 23114430 DOI: 10.1007/s00894-012-1649-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Accepted: 10/14/2012] [Indexed: 11/24/2022]
Abstract
In this study, the binding of Bovine serum albumin (BSA) with three flavonoids, kaempferol-3-O-a-L-rhamnopyranosyl-(1-3)-a-L-rhamnopyranosyl-(1-6)-b-D-galacto- pyranoside (drug 1),kaempfol-7-O-rhamnosyl-3-O-rutinoside (drug 2)andkaempferide-7-O-(4"-O-acetylrhamnosyl)-3-O-ruti- noside (drug 3) is investigated by molecular docking, molecular dynamics (MD) simulation, and binding free energy calculation. The free energies are consistent with available experimental results and suggest that the binding site of BSA-drug1 is more stable than those of BSA-drug2 and BSA-drug3. The energy decomposition analysis is performed and reveals that the electrostatic interactions play an important role in the stabilization of the binding site of BSA-drug1 while the van der Waals interactions contribute largely to stabilization of the binding site of BSA-drug2 and BSA-drug3. The key residues stabilizing the binding sites of BSA-drug1, BSA-drug2 and BSA-drug3 are identified based on the residue decomposition analysis.
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Affiliation(s)
- Xiaodi Niu
- Department of Food quality and Safety, Jilin University, Changchun 130062, People's Republic of China.
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Zhang Y, Peng M, Liu L, Shi S, Peng S. Screening, identification, and potential interaction of active compounds from Eucommia ulmodies leaves binding with bovine serum albumin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:3119-3125. [PMID: 22385161 DOI: 10.1021/jf205135w] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The aqueous extract of Eucommia ulmoides leaves has been commonly known as Du-zhong tea as a functional health food for the treatment of hypertension, hypercholesterolemia, and fatty liver. This study developed a centrifugal ultrafiltration-high-performance liquid chromatography (HPLC) method for screening and identification of bioactive compounds in E. ulmoides leaves binding with bovine serum albumin (BSA). Six active compounds were screened, isolated, and elucidated by their ultraviolet (UV), electrospray ionization-mass spectrometry (ESI-MS), and nuclear magnetic resonance (NMR) data as geniposidic acid (1), caffeic acid (2), chlorogenic acid (3), quercetin-3-O-sambubioside (4), rutin (5), and isoquercitrin (6). The interaction between active compounds and BSA was investigated in the absence and presence of other compounds by quenching the intrinsic BSA fluorescence. The results indicated that the structures significantly affected the binding process. The values of binding constants for compounds 2-6 were in the range of 10(5)-10(6) mol L(-1), while geniposidic acid (1) hardly quenching the BSA intrinsic fluorescence. However, the quenching process of geniposidic acid was easily affected in the presence of other active compounds. The formation of the geniposidic acid-phenylpropanoid (flavonoid) complex could increase the binding affinity of geniposidic acid with BSA; however, the increased steric hindrance of the complex may make phenylpropanoid or flavonoid dissociate from BSA and then decrease their affinities.
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Affiliation(s)
- Yuping Zhang
- School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People's Republic of China
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