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Huang Y, Lv T, Qin T, Xu Z, Wang L, Liu B. A DS2-specific flavonoid-based probe with a unique dual-emissive response to human serum albumin. Chem Commun (Camb) 2021; 56:11094-11097. [PMID: 32812559 DOI: 10.1039/d0cc04359a] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The hydroxyl substituent in flavonoids can cause the binding site to change from DS1 to DS2 and restore the ESIPT process of flavonoids, thereby leading to a unique dual-emissive response towards human serum albumin.
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Affiliation(s)
- Yingying Huang
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.
| | - Taoyuze Lv
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.
| | - Tianyi Qin
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.
| | - Zhongyong Xu
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.
| | - Lei Wang
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.
| | - Bin Liu
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.
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Poloni DM, Dangles O, Vinson JA. Binding of Plant Polyphenols to Serum Albumin and LDL: Healthy Implications for Heart Disease. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:9139-9147. [PMID: 30784273 DOI: 10.1021/acs.jafc.8b06674] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Cardiovascular disease (CVD) is the leading cause of death in industrialized nations. The initiating event in atherosclerosis, or hardening of the arteries, is oxidation of low density lipoprotein (LDL). Binding with serum albumin and LDL of 41 polyphenols (major antioxidants in plant foods) constituting four classes of flavonoids, three types of phenolic acids, and seven polyphenol conjugate metabolites was investigated indirectly by fluorescence quenching and directly by affinity separation/high-performance liquid chromatography (four of the polyphenols). Stern-Volmer plots yielded K values for the two proteins. Polyphenol binding was significantly stronger for albumin than with LDL. K values were highly correlated with the lipophilicity of the polyphenols. The number of polyphenol molecules determined by quenching was ∼1 for both proteins. Direct analysis under saturation conditions yielded from 2 to 13 molecules of polyphenols/LDL particle. Multiple substituent effects on binding were analyzed. Evidence was put forward that binding of polyphenols to these proteins is protective for CVD by multiple mechanisms.
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Affiliation(s)
- Dana M Poloni
- Department of Chemistry, Loyola Science Center , University of Scranton , 925 Ridge Row , Scranton , Pennsylvania 18510 , United States
| | - Olivier Dangles
- Avignon University, INRA, UMR408 SQPOV , 84000 Avignon , France
| | - Joe A Vinson
- Department of Chemistry, Loyola Science Center , University of Scranton , 925 Ridge Row , Scranton , Pennsylvania 18510 , United States
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Kerzig C, Hoffmann M, Goez M. Resveratrol Radical Repair by Vitamin C at the Micelle-Water Interface: Unexpected Reaction Rates Explained by Ion-Dipole Interactions. Chemistry 2018; 24:3038-3044. [PMID: 29314459 DOI: 10.1002/chem.201705635] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Indexed: 02/04/2023]
Abstract
Repair reactions of lipophilic phenoxy radicals by hydrophilic co-antioxidants at model membranes are important for understanding the factors that govern the interactions between radical scavengers in biological systems. By using near-UV photoionization, we have selectively generated the phenoxy radical of the famous antioxidant resveratrol inside anionic (SDS), cationic (DTAC), or neutral (TX-100) micelles, as well as in homogeneous aqueous solution, and have compared its repairs in these media by the water-soluble co-antioxidants ascorbic acid and ascorbate monoanion. With all surfactants, these reactions are dynamic processes at the micelle-water interface. Whereas for the combinations ascorbate monoanion/ ionic micelle the repair rates can be rationalized by the Coulombic interactions, unexpected effects were observed with the neutral ascorbic acid and the charged micelles: for the anionic micelles, this repair is three times faster than in homogeneous solution, and two orders of magnitude faster than for the cationic micelles. Given that the repair by a concerted proton-electron transfer demands a coplanar arrangement of the resveratrol phenoxy centre sticking out into the Stern layer and the co-antioxidant hydroxy moiety approaching from the aqueous bulk, we explain these results by ion-dipole interactions: only at a negatively charged micellar surface does the direction of the large dipole moment of ascorbic acid lead to an orientation favourable for the repair.
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Affiliation(s)
- Christoph Kerzig
- Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, 06120, Halle (Saale), Germany.,Present address: Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Matthias Hoffmann
- Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, 06120, Halle (Saale), Germany
| | - Martin Goez
- Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, 06120, Halle (Saale), Germany
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Liu B, Bi X, McDonald L, Pang Y, Liu D, Pan C, Wang L. Solvatochromic fluorescent probes for recognition of human serum albumin in aqueous solution: Insights into structure-property relationship. SENSORS AND ACTUATORS. B, CHEMICAL 2016; 236:668-674. [PMID: 28713203 PMCID: PMC5507621 DOI: 10.1016/j.snb.2016.06.056] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Human serum albumin (HSA) as the most abundant protein in human blood plasma, serves many physiological functions. The dysregulation of HSA in serum or in urine is associated with various diseases, such as cirrhosis of liver, multiple myeloma, and cardiovascular disease. Therefore, to quantify HSA in body fluids with high selectivity and sensitivity is of great significance for disease diagnosis and preventive medicine. We herein developed a series of amide-functionalized flavonoids probes, 1-3, for recognition of human serum albumin. All flavonoids could be easily prepared by a Claisen-Schmidt condensation and Algar-Flynn-Oyamada reaction, and showed positive solvatochromism on their dual emissions. The chemical structure of flavonoids played an important role on their HSA-sensing abilities. Among three probes, the compound 1 showed the highest sensitivity, the remarkable selectivity, and the quantitive response for HSA in aqueous solution. Together with its high tolerance of environmental pH, anti-interference properties, and time-insensitivity, thus it provides a promising sensing method for HSA.
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Affiliation(s)
- Bin Liu
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
- Department of Chemistry, The University of Akron, Akron, OH, 44325, USA
- Corresponding authors at: Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China. (B. Liu), (Y. Pang)
| | - Xiaoman Bi
- Department of Chemistry, The University of Akron, Akron, OH, 44325, USA
| | - Lucas McDonald
- Department of Chemistry, The University of Akron, Akron, OH, 44325, USA
| | - Yi Pang
- Department of Chemistry, The University of Akron, Akron, OH, 44325, USA
- Corresponding authors at: Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China. (B. Liu), (Y. Pang)
| | - Danqing Liu
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Chengjun Pan
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Lei Wang
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
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Czepas J, Gwoździński K. The flavonoid quercetin: possible solution for anthracycline-induced cardiotoxicity and multidrug resistance. Biomed Pharmacother 2014; 68:1149-59. [PMID: 25458790 DOI: 10.1016/j.biopha.2014.10.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 10/16/2014] [Indexed: 02/06/2023] Open
Abstract
Anthracycline chemotherapy is often used in the treatment of various malignancies. Its application, however, encounters several limitations due to development of serious side effects, mainly cardiotoxicity and may be ineffective due to multidrug resistance (MDR). Many different compounds have been evaluated as poorly effective in the protection against anthracycline side effects and in the prevention from MDR. Thus, continuous investigational efforts are necessary to find valuable protectants and the flavonoid quercetin (Q) seems to be a promising candidate. It is present in relatively high amounts in a human diet and the lack of its toxicity, including genotoxicity has been confirmed. The structure of Q favours its high antioxidant activity, the potential to inhibit the activity of oxidative enzymes and to interact with membrane transporter proteins responsible for development of MDR, e.g. P-glycoprotein. Furthermore, Q can influence cellular signalling and gene expression, and thus, alter response to exogenous genotoxicants and oxidative stress in normal cells. It accounts for its chemopreventive and anticancer properties. Overall, these properties might indicate the possibility of application of Q as cardioprotectant during anthracycline chemotherapy. Moreover, numerous biological properties displayed by Q might possibly result in the reversal of MDR in tumour cells and improve the efficacy of chemotherapy. However, these beneficial effects towards anthracycline-induced complications of chemotherapy have to be further explored and confirmed both in animal and clinical studies. Concurrently, investigations aimed at improvement of the bioavailability of Q and further elucidation of its metabolism after application in combination with anthracyclines are needed.
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Affiliation(s)
- Jan Czepas
- Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland.
| | - Krzysztof Gwoździński
- Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
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Morlière P, Hug GL, Patterson LK, Mazière JC, Ausseil J, Dupas JL, Ducroix JP, Santus R, Filipe P. Chemistry of free radicals produced by oxidation of endogenous α-aminoketones. A study of 5-aminolevulinic acid and α-aminoacetone by fast kinetics spectroscopy. Biochim Biophys Acta Gen Subj 2014; 1840:3190-7. [PMID: 25018004 DOI: 10.1016/j.bbagen.2014.07.002] [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: 04/22/2014] [Revised: 06/24/2014] [Accepted: 07/02/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND Excess 5-aminolevulinic acid (ALA) and α-aminoacetone (AA) are implicated in ketosis, porphyrinpathies and diabetes. Pathologic manifestations involve O₂⁻, H₂O₂, OH, enoyl radicals (ALA and AA) and their oxidation end products. METHODS To characterize enoyl radicals resulting from reaction of OH radicals with ALA and AA, micromolar OH concentrations were produced by pulse radiolysis of ALA and AA in aqueous solutions. RESULTS ALA and AA react with OH at k=1.5 × 10⁹ M⁻¹s⁻¹. At pH7.4, the ALA absorbance spectrum has a maximum at 330 nm (ε=750 M⁻¹cm⁻¹). This band appears as a shoulder at pH8.3 where two ALA species are present: (NH3)⁺-CH₂-CO-CH₂-CH₂-COO⁻ and NH₂-CH₂-CO-CH₂-CH₂-COO⁻ (pKa=8.3). At pH8.3, ALA reacts with oxygen (k=1.4 × 10⁸ M⁻¹s⁻¹) but not with O₂⁻. At pH8.3, AA oxidation produces two AA species characterized by an absorbance spectrum with maxima at 330 and 450 nm. ALA and AA are repaired by antioxidants (quercetin (QH), catechin, trolox, ascorbate) which are semi-oxidized (k>10(8)M⁻¹s⁻¹). QH bound to HSA or to apoferritin and ferritin repairs ALA and AA. In O₂-saturated apoferritin solutions, Q, O₂⁻, AA and reaction product(s) react with QH. CONCLUSIONS The optical absorption properties and the time evolution of ALA and AA were established for the first time. These radicals and their reaction products may be neutralized by antioxidants free in solution or bound to proteins. GENERAL SIGNIFICANCE Adjuvant antioxidant administration may be of interest in pathologies related to excess ALA or AA production.
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Affiliation(s)
- P Morlière
- INSERM, U1088, 80054 Amiens, France; CHU Amiens, Pôle Biologie, Pharmacie et Santé des Populations, Centre de Biologie Humaine, Laboratoire de Biochimie, 80054 Amiens, France; Université de Picardie Jules Verne, UFR de Pharmacie, 80036 Amiens, France.
| | - G L Hug
- University of Notre Dame, Radiation Laboratory, Notre Dame, IN 46556, USA
| | - L K Patterson
- CHU Amiens, Pôle Biologie, Pharmacie et Santé des Populations, Centre de Biologie Humaine, Laboratoire de Biochimie, 80054 Amiens, France; University of Notre Dame, Radiation Laboratory, Notre Dame, IN 46556, USA
| | - J-C Mazière
- INSERM, U1088, 80054 Amiens, France; CHU Amiens, Pôle Biologie, Pharmacie et Santé des Populations, Centre de Biologie Humaine, Laboratoire de Biochimie, 80054 Amiens, France; Université de Picardie Jules Verne, UFR de Médecine, 80036 Amiens, France
| | - J Ausseil
- INSERM, U1088, 80054 Amiens, France; CHU Amiens, Pôle Biologie, Pharmacie et Santé des Populations, Centre de Biologie Humaine, Laboratoire de Biochimie, 80054 Amiens, France; Université de Picardie Jules Verne, UFR de Médecine, 80036 Amiens, France
| | - J-L Dupas
- Université de Picardie Jules Verne, UFR de Médecine, 80036 Amiens, France; CHU Amiens, Service d'Hépato-Gastroentérologie, 80054 Amiens, France
| | - J-P Ducroix
- Université de Picardie Jules Verne, UFR de Médecine, 80036 Amiens, France; CHU Amiens, Service de Médecine Interne et Maladies Systémiques, 80054 Amiens, France
| | - R Santus
- CHU Amiens, Pôle Biologie, Pharmacie et Santé des Populations, Centre de Biologie Humaine, Laboratoire de Biochimie, 80054 Amiens, France; Muséum National d'Histoire Naturelle, Département RDDM, 75231 Paris, France
| | - P Filipe
- Hospital de Santa Maria, Faculdade de Medicina de Lisboa, Clínica Dermatologica Universitaria and Unidade de Investigação em Dermatologia, Instituto de Medicina Molecular, 1699 Lisboa Codex, Portugal
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Morlière P, Mazière JC, Patterson LK, Conte MA, Dupas JL, Ducroix JP, Filipe P, Santus R. On the repair of oxidative damage to apoferritin: a model study with the flavonoids quercetin and rutin in aerated and deaerated solutions. Free Radic Res 2013; 47:463-73. [DOI: 10.3109/10715762.2013.791024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Plasma lipoproteins as mediators of the oxidative stress induced by UV light in human skin: a review of biochemical and biophysical studies on mechanisms of apolipoprotein alteration, lipid peroxidation, and associated skin cell responses. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:285825. [PMID: 23738035 PMCID: PMC3655670 DOI: 10.1155/2013/285825] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Accepted: 03/21/2013] [Indexed: 12/15/2022]
Abstract
There are numerous studies concerning the effect of UVB light on skin cells but fewer on other skin components such as the interstitial fluid. This review highlights high-density lipoprotein (HDL) and low-density lipoprotein (LDL) as important targets of UVB in interstitial fluid. Tryptophan residues are the sole apolipoprotein residues absorbing solar UVB. The UVB-induced one-electron oxidation of Trp produces (•)Trp and (•)O2 (-) radicals which trigger lipid peroxidation. Immunoblots from buffered solutions or suction blister fluid reveal that propagation of photooxidative damage to other residues such as Tyr or disulfide bonds produces intra- and intermolecular bonds in apolipoproteins A-I, A-II, and B100. Partial repair of phenoxyl tyrosyl radicals (TyrO(•)) by α -tocopherol is observed with LDL and HDL on millisecond or second time scales, whereas limited repair of α -tocopherol by carotenoids occurs in only HDL. More effective repair of Tyr and α -tocopherol is observed with the flavonoid, quercetin, bound to serum albumin, but quercetin is less potent than new synthetic polyphenols in inhibiting LDL lipid peroxidation or restoring α -tocopherol. The systemic consequences of HDL and LDL oxidation and the activation and/or inhibition of signalling pathways by oxidized LDL and their ability to enhance transcription factor DNA binding activity are also reviewed.
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Luehring M, Blank R, Wolffram S. Vitamin E-sparing and vitamin E-independent antioxidative effects of the flavonol quercetin in growing pigs. Anim Feed Sci Technol 2011. [DOI: 10.1016/j.anifeedsci.2011.06.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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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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Bashtovyy D, Jones MK, Anantharamaiah GM, Segrest JP. Sequence conservation of apolipoprotein A-I affords novel insights into HDL structure-function. J Lipid Res 2010; 52:435-50. [PMID: 21159667 DOI: 10.1194/jlr.r012658] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We performed alignment of apolipoprotein A-I (apoA-I) sequences from 31 species of animals. We found there is specific conservation of salt bridge-forming residues in the first 30 residues of apoA-I and general conservation of a variety of residue types in the central domain, helix 2/3 to helix 7/8. In the lipid-associating domain, helix 7 and helix 10 are the most and least conserved helixes, respectively. Furthermore, eight residues are completely conserved: P66, R83, P121, E191, and P220, and three of seven Tyr residues in human apoA-I, Y18, Y115, and Y192, are conserved. Residue Y18 appears to be important for assembly of HDL. E191-Y192 represents the only completely conserved pair of adjacent residues in apoA-I; Y192 is a preferred target for site-specific oxidative modification within atheroma, and molecular dynamic simulations suggest that the conserved pair E191-Y192 is in a solvent-exposed loop-helix-loop. Molecular dynamics testing of human apoA-I showed that M112 and M148 interact with Y115, a microenvironment unique to human apoA-I. Finally, conservation of Arg residues in the α11/3 helical wheel position 7 supports several possibilities: interactions with adjacent phospholipid molecules and/or oxidized lipids and/or binding of antioxidant enzymes through cation-π orbital interactions. We conclude that sequence alignment of apoA-I provides unique insights into apoA-I structure-function relationship.
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Affiliation(s)
- Denys Bashtovyy
- Department of Medicine, Atherosclerosis Research Unit, University of Alabama at Birmingham, Birmingham, AL 35294, USA
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Patterson LK, Mazière JC, Bartels DM, Hug GL, Santus R, Morlière P. Evidence for a slow and oxygen-insensitive intra-molecular long range electron transfer from tyrosine residues to the semi-oxidized tryptophan 214 in human serum albumin: its inhibition by bound copper (II). Amino Acids 2010; 42:1269-75. [DOI: 10.1007/s00726-010-0819-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2010] [Accepted: 11/22/2010] [Indexed: 11/29/2022]
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