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Wang W, Yang P, Gao F, Wang Y, Xu Z, Liao X. Metal-free production of natural blue colorants through anthocyanin-protein interactions. J Adv Res 2024:S2090-1232(24)00080-8. [PMID: 38402948 DOI: 10.1016/j.jare.2024.02.018] [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: 11/18/2023] [Revised: 02/11/2024] [Accepted: 02/23/2024] [Indexed: 02/27/2024] Open
Abstract
INTRODUCTION The scarcity of naturally available sources for blue colorants has driven reliance on synthetic alternatives. Nevertheless, growing health concerns have prompted the development of naturally derived blue colorants, which remains challenging with limited success thus far. Anthocyanins (ACNs) are known for providing blue colors in plants, and metal complexation with acylated ACNs remains the primary strategy to generate stable blue hues. However, this approach can be costly and raise concerns regarding potential metal consumption risks. OBJECTIVES Our study aims to introduce a metal-free approach to achieve blue coloration in commonly distributed non-acylated 3-glucoside ACNs by exploring their interactions with proteins and unveiling the underlying mechanisms. METHODS Using human serum albumin (HSA) as a model protein, we investigated the structural influences of ACNs on their blue color generation using visible absorption spectroscopy, fluorescence quenching, and molecular simulations. Additionally, we examined the bluing effects of six proteins derived from milk and egg and identified the remarkable roles of bovine serum albumin (BSA) and lysozyme (LYS). RESULTS Our findings highlighted the importance of two or more hydroxyl or methoxyl substituents in the B-ring of ACNs for generating blue colors. Cyanidin-, delphinidin- and petunidin-3-glucoside, featuring two neighboring hydroxyl groups in the B-ring, exhibited blue coloration when interacting with HSA or LYS, driven primarily by favorable enthalpy changes. In contrast, malvidin-3-glucoside, with two methoxyl substituents, achieved blue coloration through interactions with HSA or BSA, where entropy change played significant roles. CONCLUSION Our work, for the first time, demonstrates the remarkable capability of widely distributed 3-glucoside ACNs to generate diverse blue shades through interactions with certain proteins. This offers a promising and straightforward strategy for the production of ACN-based blue colorants, stimulating further research in this field.
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Affiliation(s)
- Wenxin Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Peiqing Yang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Fuqing Gao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yongtao Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; National Engineering Research Center for Fruit & Vegetable Processing, Beijing, China; Key Laboratory of Fruit & Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing, China; Beijing Key Laboratory for Food Non-thermal Processing, Beijing, China
| | - Zhenzhen Xu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Xiaojun Liao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; National Engineering Research Center for Fruit & Vegetable Processing, Beijing, China; Key Laboratory of Fruit & Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing, China; Beijing Key Laboratory for Food Non-thermal Processing, Beijing, China.
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Grabowska O, Samsonov SA, Chmurzyński L, Wyrzykowski D, Żamojć K. Investigation of hexacyanoferrate(II)/(III) charge-dependent interactions with bovine and human serum albumins. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 293:122505. [PMID: 36809739 DOI: 10.1016/j.saa.2023.122505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 01/21/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
In the present paper, the binding interactions of highly negative-charged ions, namely hexacyanoferrates(II/III), i.e. [Fe(CN)6]4- and [Fe(CN)6]3- with bovine and human serum albumins (BSA and HSA, respectively) have been studied for the first time in an aqueous solution (10 mM cacodylate buffer of pH 7.0) using steady-state fluorescence spectroscopy, isothermal titration calorimetry, and CD spectroscopy supported by molecular dynamics-based computational approaches. The Stern-Volmer equation as well as its modifications suggested that hexacyanoferrates(II/III) effectively quenched the intrinsic fluorescence of the albumins through a static mechanism. The proteins under study possess only one binding site on the surface capable of binding one mole of hexacyanoferrates(II/III) ions per one mole of albumin (HSA or BSA). The formation of albumin complexes is an enthalpy-driven process (|ΔHITC| > |TΔSITC|). The strength of the interactions depends mainly on the type of albumin, and changes as follows: BSA-K3[Fe(CN)6] ∼ BSA-K4[Fe(CN)6] > HSA-K3[Fe(CN)6] ∼ HSA-K4[Fe(CN)6]. Finally, potential binding sites of bovine and human serum albumins have been investigated and discussed based on a competitive fluorescence displacement assay (with warfarin and ibuprofen as site markers) and molecular dynamics simulations.
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Affiliation(s)
- Ola Grabowska
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Sergey A Samsonov
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Lech Chmurzyński
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Dariusz Wyrzykowski
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Krzysztof Żamojć
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
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Khoulati A, Ouahhoud S, Channouf I, Channouf K, Azdimousa A, Mamri S, Ziani A, Baddaoui S, Hadini A, Asehraou A, Saalaoui E. Crocus sativus L. (saffron): a cocktail of bioactive molecules as a biostimulant by influencing plant growth, the polyphenol and ascorbic acid content of eggplant fruit. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2022.e01451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Delineating molecular interactions within surface active ionic liquids + tartrazine dye solutions: A comparative study with conventional surfactant-DTAC. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Marquês JT, Frazão De Faria C, Reis M, Machado D, Santos S, Santos MDS, Viveiros M, Martins F, De Almeida RFM. In vitro Evaluation of Isoniazid Derivatives as Potential Agents Against Drug-Resistant Tuberculosis. Front Pharmacol 2022; 13:868545. [PMID: 35600870 PMCID: PMC9114799 DOI: 10.3389/fphar.2022.868545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 04/08/2022] [Indexed: 11/13/2022] Open
Abstract
The upsurge of multidrug-resistant tuberculosis has toughened the challenge to put an end to this epidemic by 2030. In 2020 the number of deaths attributed to tuberculosis increased as compared to 2019 and newly identified multidrug-resistant tuberculosis cases have been stably close to 3%. Such a context stimulated the search for new and more efficient antitubercular compounds, which culminated in the QSAR-oriented design and synthesis of a series of isoniazid derivatives active against Mycobacterium tuberculosis. From these, some prospective isonicotinoyl hydrazones and isonicotinoyl hydrazides are studied in this work. To evaluate if the chemical derivatizations are generating compounds with a good performance concerning several in vitro assays, their cytotoxicity against human liver HepG2 cells was determined and their ability to bind human serum albumin was thoroughly investigated. For the two new derivatives presented in this study, we also determined their lipophilicity and activity against both the wild type and an isoniazid-resistant strain of Mycobacterium tuberculosis carrying the most prevalent mutation on the katG gene, S315T. All compounds were less cytotoxic than many drugs in clinical use with IC50 values after a 72 h challenge always higher than 25 µM. Additionally, all isoniazid derivatives studied exhibited stronger binding to human serum albumin than isoniazid itself, with dissociation constants in the order of 10−4–10−5 M as opposed to 10−3 M, respectively. This suggests that their transport and half-life in the blood stream are likely improved when compared to the parent compound. Furthermore, our results are a strong indication that the N′ = C bond of the hydrazone derivatives of INH tested is essential for their enhanced activity against the mutant strain of M. tuberculosis in comparison to both their reduced counterparts and INH.
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Affiliation(s)
- Joaquim Trigo Marquês
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Catarina Frazão De Faria
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Marina Reis
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
- Instituto Superior de Educação e Ciências (ISEC Lisboa), Lisboa, Portugal
| | - Diana Machado
- Unidade de Microbiologia Medica, Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Susana Santos
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Maria da Soledade Santos
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Miguel Viveiros
- Unidade de Microbiologia Medica, Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Filomena Martins
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
- *Correspondence: Filomena Martins, ; Rodrigo F. M. De Almeida,
| | - Rodrigo F. M. De Almeida
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
- *Correspondence: Filomena Martins, ; Rodrigo F. M. De Almeida,
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Sarmah S, Goswami A, Kumar Belwal V, Singha Roy A. Mitigation of ribose and glyoxal induced glycation, AGEs formation and aggregation of human serum albumin by citrus fruit phytochemicals naringin and naringenin: An insight into their mechanism of action. Food Res Int 2022; 157:111358. [DOI: 10.1016/j.foodres.2022.111358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/02/2022] [Accepted: 05/10/2022] [Indexed: 11/04/2022]
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7
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Dzydzan O, Brodyak I, Strugała-Danak P, Strach A, Kucharska AZ, Gabrielska J, Sybirna N. Biological Activity of Extracts of Red and Yellow Fruits of Cornus mas L.-An In Vitro Evaluation of Antioxidant Activity, Inhibitory Activity against α-Glucosidase, Acetylcholinesterase, and Binding Capacity to Human Serum Albumin. Molecules 2022; 27:molecules27072244. [PMID: 35408646 PMCID: PMC9000679 DOI: 10.3390/molecules27072244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/26/2022] [Accepted: 03/27/2022] [Indexed: 12/24/2022] Open
Abstract
Although extracts are broadly used in order to support the treatment of numerous diseases, only in a limited number of cases is the process of applying and establishing their mechanisms of action scientifically analyzed. Fruits of Cornelian cherry are an abundant source of iridoids, anthocyanins, flavonols and phenolic acids. The aim of the present study was to evaluate the in vitro bioactivity of red and yellow Cornelian cherry fruits’ extracts. The biological potential of extracts, in a broad sense, involved antioxidant activity in relation to phosphatidylcholine liposomes, inhibitory ability against α-glucosidase and acetylcholinesterase enzymes, as well as interactions with human serum albumin. Studies showed that both extracts were more effective in protecting liposome membranes against free radicals produced by AAPH in an aqueous environment due to the fact that they can be better eliminated by the hydrophilic components of the extracts than those produced by UVB radiation. Extracts exhibited inhibitory activity against acetylcholinesterase and α-glucosidase, wherein loganic acid extract showed noncompetitive inhibition of the enzyme. Moreover, extracts binded to albumin mainly through hydrogen bonds and van der Waals forces. Taken together, red and yellow cherry fruits’ extracts exhibit diverse biological properties and can be exploited as a source of natural therapeutic agents.
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Affiliation(s)
- Olha Dzydzan
- Department of Biochemistry, Ivan Franko National University of Lviv, 4 Hrushevskyi St., 79005 Lviv, Ukraine; (O.D.); (I.B.); (N.S.)
| | - Iryna Brodyak
- Department of Biochemistry, Ivan Franko National University of Lviv, 4 Hrushevskyi St., 79005 Lviv, Ukraine; (O.D.); (I.B.); (N.S.)
| | - Paulina Strugała-Danak
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, C. K. Norwida 25, 50-375 Wrocław, Poland; (A.S.); (J.G.)
- Correspondence: ; Tel.: +48-71-320-5461
| | - Angelika Strach
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, C. K. Norwida 25, 50-375 Wrocław, Poland; (A.S.); (J.G.)
| | - Alicja Z. Kucharska
- Department of Fruit, Vegetable and Plant Nutraceutical Technology, Wrocław University of Environmental and Life Sciences, J. Chełmońskiego 37/41, 51-630 Wrocław, Poland;
| | - Janina Gabrielska
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, C. K. Norwida 25, 50-375 Wrocław, Poland; (A.S.); (J.G.)
| | - Natalia Sybirna
- Department of Biochemistry, Ivan Franko National University of Lviv, 4 Hrushevskyi St., 79005 Lviv, Ukraine; (O.D.); (I.B.); (N.S.)
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Synthesis, characterization, antimicrobial and interaction studies of pteridines with human serum albumin: A combined multi-spectroscopic and computational study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131857] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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9
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Combined spectroscopic and computational approaches for the recognition of bioactive flavonoid 6-hydroxyflavone by human serum albumin: Effects of non-enzymatic glycation in the binding. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118288] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Cruz L, Basílio N, Mateus N, de Freitas V, Pina F. Natural and Synthetic Flavylium-Based Dyes: The Chemistry Behind the Color. Chem Rev 2021; 122:1416-1481. [PMID: 34843220 DOI: 10.1021/acs.chemrev.1c00399] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Flavylium compounds are a well-known family of pigments because they are prevalent in the plant kingdom, contributing to colors over a wide range from shades of yellow-red to blue in fruits, flowers, leaves, and other plant parts. Flavylium compounds include a large variety of natural compound classes, namely, anthocyanins, 3-deoxyanthocyanidins, auronidins, and their respective aglycones as well as anthocyanin-derived pigments (e.g., pyranoanthocyanins, anthocyanin-flavan-3-ol dimers). During the past few decades, there has been increasing interest among chemists in synthesizing different flavylium compounds that mimic natural structures but with different substitution patterns that present a variety of spectroscopic characteristics in view of their applications in different industrial fields. This Review provides an overview of the chemistry of flavylium-based compounds, in particular, the synthetic and enzymatic approaches and mechanisms reported in the literature for obtaining different classes of pigments, their physical-chemical properties in relation to their pH-dependent equilibria network, and their chemical and enzymatic degradation. The development of flavylium-based systems is also described throughout this Review for emergent applications to explore some of the physical-chemical properties of the multistate of species generated by these compounds.
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Affiliation(s)
- Luis Cruz
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal
| | - Nuno Basílio
- LAQV-REQUIMTE, Department of Chemistry, Faculty of Sciences and Technology, New University of Lisbon, 2829-516 Caparica, Portugal
| | - Nuno Mateus
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal
| | - Victor de Freitas
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal
| | - Fernando Pina
- LAQV-REQUIMTE, Department of Chemistry, Faculty of Sciences and Technology, New University of Lisbon, 2829-516 Caparica, Portugal
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Ali M, Usman M, Shah A, Rehman A. Encapsulation of ethyl violet by anionic-cationic mixed micellar solution: Spectroscopic and conductometric studies. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Włoch A, Strugała-Danak P, Pruchnik H, Krawczyk-Łebek A, Szczecka K, Janeczko T, Kostrzewa-Susłow E. Interaction of 4'-methylflavonoids with biological membranes, liposomes, and human albumin. Sci Rep 2021; 11:16003. [PMID: 34362978 PMCID: PMC8346624 DOI: 10.1038/s41598-021-95430-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 07/26/2021] [Indexed: 02/07/2023] Open
Abstract
The aim of the study was to compare the impact of three synthesized chemical compounds from a group of methylated flavonoids, i.e. 2'-hydroxy-4-methylchalcone (3), 4'-methylflavanone (4), and 4'-methylflavone (5), on a red blood cell membranes (RBCMs), phosphatidylcholine model membranes (PC), and human serum albumin (HSA) in order to investigate their structure-activity relationships. In the first stage of the study, it was proved that all of the compounds tested do not cause hemolysis of red blood cells and, therefore, do not have a toxic effect. In biophysical studies, it was shown that flavonoids have an impact on the hydrophilic and hydrophobic regions of membranes (both RBCMs and PC) causing an increase in packing order of lipid heads and a decrease in fluidity, respectively. Whereas, on the one hand, the magnitude of these changes depends on the type of the compound tested, on the other hand, it also depends on the type of membrane. 4'-Methylflavanone and 4'-methylflavone are located mainly in the hydrophilic part of lipid membranes, while 2'-hydroxy-4-methylchalcone has a greater impact on the hydrophobic area. A fluorescence quenching study proved that compounds (3), (4) and (5) bind with HSA in a process of static quenching. The binding process is spontaneous whereas hydrogen bonding interactions and van der Waals forces play a major role in the interaction between the compounds and HSA.
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Affiliation(s)
- Aleksandra Włoch
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, C. K. Norwida 25, 50-375, Wrocław, Poland
| | - Paulina Strugała-Danak
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, C. K. Norwida 25, 50-375, Wrocław, Poland.
| | - Hanna Pruchnik
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, C. K. Norwida 25, 50-375, Wrocław, Poland
| | - Agnieszka Krawczyk-Łebek
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, C. K. Norwida 25, 50-375, Wrocław, Poland
| | - Karolina Szczecka
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, C. K. Norwida 25, 50-375, Wrocław, Poland
| | - Tomasz Janeczko
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, C. K. Norwida 25, 50-375, Wrocław, Poland
| | - Edyta Kostrzewa-Susłow
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, C. K. Norwida 25, 50-375, Wrocław, Poland
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Sarmah S, Pahari S, Belwal VK, Jana M, Singha Roy A. Elucidation of molecular interaction of bioactive flavonoid luteolin with human serum albumin and its glycated analogue using multi-spectroscopic and computational studies. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114147] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Jahandari N, Mohseni-Shahri FS, Moeinpour F. Synthesis and Characterization of Cobalt(II) and Manganese(II) Schiff Base Complexes: Metal Effect on the Binding Affinity with β-Casein. J Fluoresc 2020; 30:1575-1582. [PMID: 32870454 DOI: 10.1007/s10895-020-02612-0] [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: 07/23/2020] [Accepted: 08/24/2020] [Indexed: 10/23/2022]
Abstract
In this study, two metal Schiff base complexes (cobalt(II) and manganese(II), were synthesized and characterized by 1H-NMR and FT-IR analyses. The in vitro binding behavior of this complexes with β-Casein (β-CN) was investigated by using biophysical techniques. For evaluation the thermodynamics parameters of interaction between Schiff base complexes and β-CN,the fluorescence data at different temperatures were done. The results showed that the intrinsic fluorescence of the β-CN was quenched by increasing the complexes through the dynamic quenching mechanism. Also, these complexes demonstrated a considrable binding affinity to β-CN and the process is mainly entropy driven. Fluorescence resonance energy transfer was used in order to estimating the distance between donor (β-CN) and acceptor (complex). Results demonstrated that the sequence of tendency of the complexes to β-CN was as follows: Mn-Schiff base complex > Co-Schiff base complex. All these experimental results propose that β-CN might act as carrier protein for Co(II) and Mn (II) complexes to deliver it to the target molecules.
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Affiliation(s)
- Nafiseh Jahandari
- Department of Chemistry, Islamic Azad University, Bandar Abbas Branch, Bandar Abbas, Iran
| | | | - Farid Moeinpour
- Department of Chemistry, Islamic Azad University, Bandar Abbas Branch, Bandar Abbas, Iran
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Gecibesler IH, Aydin M. Plasma Protein Binding of Herbal-Flavonoids to Human Serum Albumin and Their Anti-proliferative Activities. AN ACAD BRAS CIENC 2020; 92:e20190819. [PMID: 32491127 DOI: 10.1590/0001-3765202020190819] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 10/23/2019] [Indexed: 12/19/2022] Open
Abstract
Herbal-flavonoids (HF) as polyphenolic secondary metabolites are taken in the daily diet to join in many metabolic processes in the human organism. Anti-proliferative activities and human serum albumin (HSA) binding capacities of herbal-flavonoids namely 7,5'-dimethoxyisoetin (HF1), homoorientin-6''-4-O-methyl-myo-inositol (HF2), (2R, 3R)-(+)-dihydrokaempferol-7,4'-dimethylether (HF3), eriodictyol-7,4'-dimethylether (HF4) and flavonoids isoorientin (HF5) and genkwanin (HF6) were investigated. Anti-proliferative activities were determined by the xCELLigence system by treatment with human prostate (PC3) and cervical cancer (HeLa) cells. The binding capacities were studied by two-dimensional (2D-FL) and three-dimensional (3D-FL) fluorescence spectroscopy. HeLa and PC3 cell lines were treated with flavonoids at 10, 50 and 100 μg/mL concentrations over a 48 hour period. Stable anti-proliferative efficacy plots were obtained for tested flavonoids. From the flavonoids, HF3 and HF4 showed the strongest anti-proliferative effect against PC3 and HeLa cell line. HF1 and HF2 exhibited the strongest binding capacity to the HSA corresponding to Kb values of 3.81 x 104 M-1 and 6.00 x 104 M-1, respectively. The studies revealed that the flavonoids form the basis of in vivo preclinical studies as important nutraceuticals of the daily diet, as well as modelled in medical and pharmacological applications.
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Affiliation(s)
| | - Murat Aydin
- Faculty of Science and Art, Bingol University, Bingol, Turkey
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Sarmah S, Pahari S, Das S, Belwal VK, Jana M, Singha Roy A. Non-enzymatic glycation of human serum albumin modulates its binding efficacy towards bioactive flavonoid chrysin: A detailed study using multi-spectroscopic and computational methods. J Biomol Struct Dyn 2020; 39:476-492. [PMID: 31900044 DOI: 10.1080/07391102.2019.1711196] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The non-enzymatic glycation of plasma proteins by reducing sugars have important consequences on the conformational and functional properties of protein. The formation of advanced glycation end products (AGEs) is responsible for cell death and other pathological conditions. We have synthesized the glycated human serum albumin (gHSA) and characterized the same by using differential spectroscopic measurements. The aim of the present study is to determine the effect of glycation on the binding of human serum albumin (HSA) with bioactive flavonoid chrysin, which possesses anti-cancer, anti-inflammatory and anti-oxidant activities. The interaction of chrysin with HSA and gHSA was studied using multi-spectroscopic, molecular docking and molecular dynamics (MD) simulation techniques. Chrysin quenched the intrinsic fluorescence of both HSA and gHSA by static quenching mechanism. The value of the binding constant (Kb) for the interaction of HSA-chrysin complex (4.779 ± 0.623 × 105 M-1 at 300 K) was found to be higher than that of gHSA-chrysin complex (2.206 ± 0.234 × 105 M-1 at 300 K). Hence, non-enzymatic glycation of HSA significantly reduced its binding affinity towards chrysin. The % α-helicity of HSA was found to get enhanced upon binding with chrysin, and minimal changes were observed for the gHSA-chrysin complex. Site marker probe studies indicated that chrysin binds to subdomain IIA and IIIA of both HSA and gHSA. The results from molecular docking and MD simulation studies correlated well with the experimental findings. Electrostatic interactions followed by hydrogen bonding and hydrophobic interactions played major roles in the binding process. These observations may have some useful insights into the field of pharmaceutics.
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Affiliation(s)
- Sharat Sarmah
- Department of Chemistry, National Institute of Technology, Meghalaya, Shillong, India
| | - Somdev Pahari
- Molecular Simulation Laboratory, Department of Chemistry, National Institute of Technology, Rourkela, India
| | - Sourav Das
- Department of Chemistry, National Institute of Technology, Meghalaya, Shillong, India
| | - Vinay Kumar Belwal
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Madhurima Jana
- Molecular Simulation Laboratory, Department of Chemistry, National Institute of Technology, Rourkela, India
| | - Atanu Singha Roy
- Department of Chemistry, National Institute of Technology, Meghalaya, Shillong, India
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17
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Jiao Q, Zhang W, Jiang Y, Jiang L, Chen X, Liu B. Study on the Interactions Between Caffeoylquinic Acids With Bovine Serum Albumin: Spectroscopy, Antioxidant Activity, LC-MS n, and Molecular Docking Approach. Front Chem 2019; 7:840. [PMID: 31867307 PMCID: PMC6909939 DOI: 10.3389/fchem.2019.00840] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 11/18/2019] [Indexed: 11/13/2022] Open
Abstract
Clarified the binding mechanism of drugs with plasma proteins could provide fresh insights into the drug development. Caffeoylquinic acids (CQAs) are a kind of phenolic acid compounds which has extensive biological effects. This study investigated the binding mechanism of three CQAs, including chlorogenic acid, neochlorogenic acid, and cryptochlorogenic acid, with bovine serum albumin (BSA) by using multi-spectroscopic techniques, including fluorescence, UV-Vis, Fourier transform infrared (FT-IR) and circular dichroism (CD) spectroscopy, LC-MSn, molecular docking and antioxidant activity assessment. In addition, the influences of PBS buffer, Tris-HCl buffer and water as solvents on the characteristics of CQAs and BSA interaction were also investigated. The results showed that intrinsic fluorescence of BSA was quenched by CQAs and the interaction was static quenching with the formation of a non-fluorescent complex. The binding of CQAs and BSA was spontaneous, and Van der Waals forces and hydrogen-bond interaction occupied crucial roles in the binding. All the three CQAs could bind to Site I in Domain IIA. The weakest interaction between neochlorogenic acid and BSA may due to its larger polarity. The results also indicated that the binding affinity of CQAs had a descending order of Tris-HCl > H2O > PBS. This study firstly clarified the binding mechanism of CQAs with BSA and changes of the binding in different solvents, and provided fresh insights into this drug transportation and metabolism.
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Affiliation(s)
- Qishu Jiao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Wei Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Yanyan Jiang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Lijuan Jiang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Xiangyang Chen
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Bin Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
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18
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Alanazi AM, Khan AA, Rehman MT, Jabeen M, Algrain N, Baig MH. Biophysical interactions, docking studies and cytotoxic potential of a novel propofol-linolenate: a multi-technique approach. J Biomol Struct Dyn 2019; 38:2389-2401. [PMID: 31226916 DOI: 10.1080/07391102.2019.1634643] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
In the present study, we have analyzed the biophysical interactions of alpha-linolenic acid conjugate (2,6P-ALA) with human serum albumin (HSA) and calf thymus DNA (CT-DNA); and also determined its effect on human cancer cell lines. The results of interactions between 2,6P-ALA and HSA intrinsic fluorescence indicated static quenching of HSA by the target conjugate with overall Stern-Volmer quenching constant (Ksv) value of 1.8 × 103 M-1. At high concentrations, 2,6P-ALA caused conformational variations in HSA with evident increase in α-helices. Docking studies also revealed preferential binding of 2,6P-ALA at the hydrophobic cavity of site IB with suggestive involvement of hydrophobic forces. Likewise, the conjugate was also able to quench the fluorescence intensity of CT-DNA with static type of quenching signifying the probability of interaction between them. In case of competitive interaction with ethidium bromide (EB) bound CT-DNA also; the conjugate replaced the EB depicting intercalation to be the main type of binding force. Results of cytotoxic effect of 2,6P-ALA showed significant inhibition of cancer cells growth in a concentration-dependent manner. Conjugate was most potent on MCF-7 cells. Fluorescence microscopic image of MCF-7 cells at IC50 concentration of 24 µM revealed distinct morphological changes that were characteristic of programed cell death. Overall, these results complement with the previous findings of 2,6P-ALA and provide added statistics about the prospect of their transport in blood plasma.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Amer M Alanazi
- Pharmaceutical Biotechnology Laboratory, Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Azmat Ali Khan
- Pharmaceutical Biotechnology Laboratory, Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Md Tabish Rehman
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mumtaz Jabeen
- Section of Genetics, Department of Zoology, Aligarh Muslim University, Aligarh, India
| | - Nasir Algrain
- Pharmaceutical Biotechnology Laboratory, Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohammad Hassan Baig
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, Republic of Korea
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19
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Furkan M, Siddiqi MK, Zakariya SM, Khan FI, Hassan MI, Khan RH. An In Vitro elucidation of the antiaggregatory potential of Diosminover thermally induced unfolding of hen egg white lysozyme; A preventive quest for lysozyme amyloidosis. Int J Biol Macromol 2019; 129:1015-1023. [DOI: 10.1016/j.ijbiomac.2019.02.107] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/18/2019] [Accepted: 02/18/2019] [Indexed: 01/24/2023]
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20
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Patel BR, Kerman K. Calorimetric and spectroscopic detection of the interaction between a diazo dye and human serum albumin. Analyst 2019; 143:3890-3899. [PMID: 30033476 DOI: 10.1039/c8an00587g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Dye effluents are one of the main causes of water pollution. Azo dyes, the most widely applied colorants, are particularly difficult to degrade. Exposure of such dyes to the aquatic environment is hazardous to human health and biota due to their intrinsic harmful mutagenic and carcinogenic properties. Congo Red (CR) is an anionic and synthetic diazo dye, which is recalcitrant to the biodegradative process and metabolizes to produce a potential carcinogen. Research on the interaction of this toxic dye with serum albumin, as a transport protein, is of paramount significance because the physiological and toxicological behaviours of the dye in vivo are associated with its interactive characteristics with the proteins. In this regard, a detailed binding profile of CR with human serum albumin (HSA) was studied using isothermal titration calorimetry (ITC) along with various spectroscopic and microscopic methods. The thermodynamic results from ITC indicated that the CR-HSA non-covalent interaction occured primarily due to favorable entropy and unfavorable enthalpy with a Ka of 106 M-1 at lower concentrations and 105 M-1 at higher concentrations. Steady-state fluorescence data revealed that the intrinsic fluorescence of HSA was quenched in the presence of CR via the static quenching mechanism. Using Förster's non-radioactive energy transfer theory (FRET), the specific binding distance r (2.73 nm) between the donor (Trp-214 from HSA) and the acceptor (CR) was calculated. Our preliminary results indicated that CR had a high affinity to HSA, which can have significant implications in the distribution and elimination of this toxic dye upon exposure.
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Affiliation(s)
- Bhargav R Patel
- Department of Physical and Environmental Sciences, University of Toronto at Scarborough, 1265 Military Trail, Toronto, ON M1C 1A4, Canada.
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21
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Zhu K, Lv T, Qin T, Huang Y, Wang L, Liu B. A flavonoid-based fluorescent probe enables the accurate quantification of human serum albumin by minimizing the interference from blood lipids. Chem Commun (Camb) 2019; 55:13983-13986. [DOI: 10.1039/c9cc08015e] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We herein provide a simple design strategy to improve the sensing specificity towards human serum albumin by incorporating a nitrobenzene quencher into a traditional polarity-sensitive probe in responding to the interference from blood lipids.
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Affiliation(s)
- Kangning Zhu
- Shenzhen Key Laboratory of Polymer Science and Technology
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Taoyuze Lv
- Shenzhen Key Laboratory of Polymer Science and Technology
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Tianyi Qin
- Shenzhen Key Laboratory of Polymer Science and Technology
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Yingying Huang
- Shenzhen Key Laboratory of Polymer Science and Technology
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Lei Wang
- Shenzhen Key Laboratory of Polymer Science and Technology
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Bin Liu
- Shenzhen Key Laboratory of Polymer Science and Technology
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen
- P. R. China
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22
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Gan N, Sun Q, Zhang M, Tang P, Zhao L, Xie T, Zhang Y, Li H. Insights into the interaction of ulipristal acetate and human serum albumin using multi-spectroscopic methods, molecular docking, and dynamic simulation. J Biomol Struct Dyn 2018; 37:2989-2998. [DOI: 10.1080/07391102.2018.1502686] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Na Gan
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Qiaomei Sun
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Man Zhang
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Peixiao Tang
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Ludan Zhao
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Tonghui Xie
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Yongkui Zhang
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Hui Li
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
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23
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Jiao Q, Wang R, Jiang Y, Liu B. Study on the interaction between active components from traditional Chinese medicine and plasma proteins. Chem Cent J 2018; 12:48. [PMID: 29728878 PMCID: PMC5935606 DOI: 10.1186/s13065-018-0417-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 04/24/2018] [Indexed: 02/06/2023] Open
Abstract
Traditional Chinese medicine (TCM), as a unique form of natural medicine, has been used in Chinese traditional therapeutic systems over two thousand years. Active components in Chinese herbal medicine are the material basis for the prevention and treatment of diseases. Research on drug-protein binding is one of the important contents in the study of early stage clinical pharmacokinetics of drugs. Plasma protein binding study has far-reaching influence on the pharmacokinetics and pharmacodynamics of drugs and helps to understand the basic rule of drug effects. It is important to study the binding characteristics of the active components in Chinese herbal medicine with plasma proteins for the medical science and modernization of TCM. This review summarizes the common analytical methods which are used to study the active herbal components-protein binding and gives the examples to illustrate their application. Rules and influence factors of the binding between different types of active herbal components and plasma proteins are summarized in the end. Finally, a suggestion on choosing the suitable technique for different types of active herbal components is provided, and the prospect of the drug-protein binding used in the area of TCM research is also discussed.
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Affiliation(s)
- Qishu Jiao
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Rufeng Wang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Yanyan Jiang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Bin Liu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing, 102488, China.
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24
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Das P, Chaudhari SK, Das A, Kundu S, Saha C. Interaction of flavonols with human serum albumin: a biophysical study showing structure-activity relationship and enhancement when coated on silver nanoparticles. J Biomol Struct Dyn 2018; 37:1414-1426. [PMID: 29633910 DOI: 10.1080/07391102.2018.1462732] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Binding affinities of flavonols namely quercetin, myricetin, and kaempferol to human serum albumin (HSA) were determined fluorimetrically and the order was observed to be myricetin > quercetin > kaempferol demonstrating structure-activity relationship. Quercetin-coated silver nanoparticles (AgNPs) show higher binding affinity to HSA compared to free quercetin with binding constants 6.04 × 107 M-1 and 4.2 × 106 M-1, respectively. Using site-specific markers it is concluded that free quercetin and that coated on AgNPs bind at different sites. Significant structural changes in circular dichroism (CD) spectra of HSA were recorded with quercetin-coated AgNPs compared to free quercetin. These results were further substantiated by time-resolved fluorescence spectroscopy where fluorescence life time of the tryptophan residue in HSA-quercetin-coated AgNPs complex decreased to 3.63 ns from 4.22 ns in HSA-quercetin complex. Isothermal calorimetric studies reveal two binding modes for quercetin-coated AgNPs and also higher binding constants compared to free quercetin. These higher binding affinities are attributed to altered properties of quercetin when coated on AgNPs enabling it to reach the binding sites other than site II where free quercetin mainly binds.
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Affiliation(s)
- Pratyusa Das
- a School of Biotechnology and Biological Sciences , Maulana Abul Kalam Azad University of Technology , BF-142, Salt Lake, Kolkata 700064 , India
| | - Sunil Kumar Chaudhari
- a School of Biotechnology and Biological Sciences , Maulana Abul Kalam Azad University of Technology , BF-142, Salt Lake, Kolkata 700064 , India
| | - Asmita Das
- a School of Biotechnology and Biological Sciences , Maulana Abul Kalam Azad University of Technology , BF-142, Salt Lake, Kolkata 700064 , India
| | - Somashree Kundu
- b UGC-DAE Consortium for Scientific Research, Kolkata Centre , LB-8 Salt Lake, Kolkata 700098 , India
| | - Chabita Saha
- a School of Biotechnology and Biological Sciences , Maulana Abul Kalam Azad University of Technology , BF-142, Salt Lake, Kolkata 700064 , India
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25
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Hashemi Gahruie H, Niakousari M. Antioxidant, antimicrobial, cell viability and enzymatic inhibitory of antioxidant polymers as biological macromolecules. Int J Biol Macromol 2017; 104:606-617. [DOI: 10.1016/j.ijbiomac.2017.06.021] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 05/13/2017] [Accepted: 06/05/2017] [Indexed: 01/09/2023]
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26
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Maleimido-proxyl as an EPR spin label for the evaluation of conformational changes of albumin. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2017; 46:773-787. [DOI: 10.1007/s00249-017-1257-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 08/04/2017] [Accepted: 09/16/2017] [Indexed: 11/25/2022]
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27
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Pontremoli C, Barbero N, Viscardi G, Visentin S. Insight into the interaction of inhaled corticosteroids with human serum albumin: A spectroscopic-based study. J Pharm Anal 2017; 8:37-44. [PMID: 29568666 PMCID: PMC5859165 DOI: 10.1016/j.jpha.2017.07.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 07/03/2017] [Accepted: 07/04/2017] [Indexed: 01/08/2023] Open
Abstract
It is well known that the safety and efficacy profile of an inhaled cortocosteroid (ICS) is influenced by the pharmacokinetic properties and associated pharmacodynamic effects of the drug. Freely circulating, protein unbound, and active ICS can cause systemic adverse effects. Therefore, a detailed investigation of drug-protein interaction could be of great interest to understand the pharmacokinetic behaviour of corticosteroids and for the design of new analogues with effective pharmacological properties. In the present work, the interaction between some corticosteroids and human serum albumin (HSA) has been studied by spectroscopic approaches. UV–Vis spectroscopy confirmed that all the investigated corticosteroids can bind to HSA forming a protein-drug complex. The intrinsic fluorescence of HSA was quenched by all the investigated drugs, which was rationalized in terms of a static quenching mechanism. The thermodynamic parameters determined by the Van’t Hoff analysis of the binding constants (negative ΔH and ΔS values) clearly indicate thathydrogen bonds and van der Waals forces play a major role in the binding process between albumin and betamethasone, flunisolide and prednisolone, while hydrophobic forces may play a major role in stabilizing albumin-triamcinolone complexes.
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Affiliation(s)
- Carlotta Pontremoli
- Department of Applied Science and Technology (DISAT), Politecnico of Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy
| | - Nadia Barbero
- Department of Chemistry and NIS Interdepartmental Centre, University of Torino, via Pietro Giuria 7, 10125 Torino, Italy
| | - Guido Viscardi
- Department of Chemistry and NIS Interdepartmental Centre, University of Torino, via Pietro Giuria 7, 10125 Torino, Italy
| | - Sonja Visentin
- Molecular Biotechnology and Health Sciences Department, University of Torino, via Quarello 15, 10135 Torino, Italy
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28
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Combined multispectroscopic and molecular dynamics simulation investigation on the interaction between cyclosporine A and β-lactoglobulin. Int J Biol Macromol 2017; 95:1-7. [DOI: 10.1016/j.ijbiomac.2016.10.107] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 10/31/2016] [Accepted: 10/31/2016] [Indexed: 11/15/2022]
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29
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Zhao L, Liu J, Guo R, Sun Q, Yang H, Li H. Investigating the interaction mechanism of fluorescent whitening agents to human serum albumin using saturation transfer difference-NMR, multi-spectroscopy, and docking studies. RSC Adv 2017. [DOI: 10.1039/c7ra04008c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Characterization of the interaction between two fluorescent whitening agents and human serum albumin: 1H STD-NMR, multi-spectroscopy, and docking studies.
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Affiliation(s)
- Ludan Zhao
- College of Light Industry
- Textile and Food Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Jiuyang Liu
- School of Life Sciences
- University of Science and Technology of China
- Hefei 230026
- China
| | - Ronghui Guo
- College of Light Industry
- Textile and Food Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Qiaomei Sun
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Hongqin Yang
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Hui Li
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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30
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Ren J, Zheng Y, Lin Z, Han X, Liao W. Macroporous resin purification and characterization of flavonoids from Platycladus orientalis (L.) Franco and their effects on macrophage inflammatory response. Food Funct 2017; 8:86-95. [DOI: 10.1039/c6fo01474g] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
LPS-induced macrophage cells as a model of inflammatory response to investigate the anti-inflammatory mechanism of the purifiedPlatycladus orientalis(L.) Franco flavonoids.
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Affiliation(s)
- Jiaoyan Ren
- School of Food Science and Engineering
- South China University of Technology
- South China University of Technology
- Guangzhou 510640
- China
| | - Yamei Zheng
- School of Food Science and Engineering
- South China University of Technology
- South China University of Technology
- Guangzhou 510640
- China
| | - Zehua Lin
- School of Food Science and Engineering
- South China University of Technology
- South China University of Technology
- Guangzhou 510640
- China
| | - Xin Han
- School of Food Science and Engineering
- South China University of Technology
- South China University of Technology
- Guangzhou 510640
- China
| | - Wenzhen Liao
- School of Food Science and Engineering
- South China University of Technology
- South China University of Technology
- Guangzhou 510640
- China
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31
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Arroyo-Maya IJ, Campos-Terán J, Hernández-Arana A, McClements DJ. Characterization of flavonoid-protein interactions using fluorescence spectroscopy: Binding of pelargonidin to dairy proteins. Food Chem 2016; 213:431-439. [DOI: 10.1016/j.foodchem.2016.06.105] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Revised: 06/28/2016] [Accepted: 06/29/2016] [Indexed: 11/24/2022]
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32
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Shahi T, Assadpour E, Jafari SM. Main chemical compounds and pharmacological activities of stigmas and tepals of ‘red gold’; saffron. Trends Food Sci Technol 2016. [DOI: 10.1016/j.tifs.2016.10.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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33
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Shahsavani MB, Ahmadi S, Aseman MD, Nabavizadeh SM, Alavianmehr MM, Yousefi R. Comparative study on the interaction of two binuclear Pt (II) complexes with human serum albumin: Spectroscopic and docking simulation assessments. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 164:323-334. [DOI: 10.1016/j.jphotobiol.2016.09.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/26/2016] [Accepted: 09/27/2016] [Indexed: 12/26/2022]
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34
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Sowrirajan C, Natesan S, Dhanaraj P, Israel V.M.V. E. Binding of 6-methyl-3-phenyliminomethyl-4H-chromen-4-one with bovine serum albumin in free and β-cyclodextrin-complexed forms: Modulation of the binding by β-cyclodextrin. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.07.056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Gokara M, Narayana VV, Sadarangani V, Chowdhury SR, Varkala S, Ramachary DB, Subramanyam R. Unravelling the binding mechanism and protein stability of human serum albumin while interacting with nefopam analogues: a biophysical and insilico approach. J Biomol Struct Dyn 2016; 35:2280-2292. [PMID: 27453381 DOI: 10.1080/07391102.2016.1216895] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In this study, molecular binding affinity was investigated for Nefopam analogues (NFs), a functionalized benzoxazocine, with human serum albumin (HSA), a major transport protein in the blood. Its binding affinity and concomitant changes in its conformation, binding site and simulations were also studied. Fluorescence data revealed that the fluorescence quenching of HSA upon binding of NFs analogues is based on a static mechanism. The three analogues of NFs binding constants (KA) are in the order of NF3 > NF2 > NF1 with values of 1.53 ± .057 × 104, 2.16 ± .071 × 104 and 3.6 ± .102 × 105 M-1, respectively. Concurrently, thermodynamic parameters indicate that the binding process was spontaneous, and the complexes were stabilized mostly by hydrophobic interactions, except for NF2 has one hydrogen bond stabilizes it along with hydrophobic interactions. Circular dichroism (CD) studies revealed that there is a decrease in α-helix with an increase in β-sheets and random coils signifying partial unfolding of the protein upon binding of NFs, which might be due to the formation of NFs-HSA complexes. Further, molecular docking studies showed that NF1, NF2 and NF3 bound to subdomains IIIA, IB and IIA through hydrophobic interactions. However, NF1 have additionally formed a single hydrogen bond with LYS 413. Furthermore, molecular simulations unveiled that NFs binding was in support with the structural perturbation observed in CD, which is evident from the root mean square deviation and Rg fluctuations. We hope our insights will provide ample scope for engineering new drugs based on the resemblances with NFs for enhanced efficacy with HSA.
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Affiliation(s)
- Mahesh Gokara
- a Department of Biochemistry , School of Life Sciences, University of Hyderabad , Hyderabad 500046 , India
| | | | - Vineet Sadarangani
- a Department of Biochemistry , School of Life Sciences, University of Hyderabad , Hyderabad 500046 , India
| | - Shatabdi Roy Chowdhury
- a Department of Biochemistry , School of Life Sciences, University of Hyderabad , Hyderabad 500046 , India
| | - Sreelaxmi Varkala
- a Department of Biochemistry , School of Life Sciences, University of Hyderabad , Hyderabad 500046 , India
| | | | - Rajagopal Subramanyam
- c Department of Plant Sciences , School of Life Sciences, University of Hyderabad , Hyderabad 500046 , India
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36
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Jattinagoudar LN, Nandibewoor ST, Chimatadar SA. Binding of fexofenadine hydrochloride to bovine serum albumin: structural considerations by spectroscopic techniques and molecular docking. J Biomol Struct Dyn 2016; 35:1200-1214. [DOI: 10.1080/07391102.2016.1183229] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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37
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Xiang Y, Duan L, Ma Q, Lv Z, Ruohua Z, Zhang Z. Fluorescence spectroscopy and molecular simulation on the interaction of caffeic acid with human serum albumin. LUMINESCENCE 2016; 31:1496-1502. [DOI: 10.1002/bio.3135] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 03/07/2016] [Accepted: 03/09/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Yuhong Xiang
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Lili Duan
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Qiang Ma
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Zizheng Lv
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Zhu Ruohua
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Zhuoyong Zhang
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
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38
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Vachali PP, Li B, Besch BM, Bernstein PS. Protein-Flavonoid Interaction Studies by a Taylor Dispersion Surface Plasmon Resonance (SPR) Technique: A Novel Method to Assess Biomolecular Interactions. BIOSENSORS-BASEL 2016; 6:bios6010006. [PMID: 26927197 PMCID: PMC4810398 DOI: 10.3390/bios6010006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/10/2016] [Accepted: 02/19/2016] [Indexed: 11/24/2022]
Abstract
Flavonoids are common polyphenolic compounds widely distributed in fruits and vegetables. These pigments have important pharmacological relevance because emerging research suggests possible anti-cancer and anti-inflammatory properties as well other beneficial health effects. These compounds are relatively hydrophobic molecules, suggesting the role of blood transport proteins in their delivery to tissues. In this study, we assess the binding interactions of four flavonoids (kaempferol, luteolin, quercetin, and resveratrol) with human serum albumin (HSA), the most abundant protein in the blood, and with glutathione S-transferase pi isoform-1 (GSTP1), an enzyme with well-characterized hydrophobic binding sites that plays an important role in detoxification of xenobiotics with reduced glutathione, using a novel Taylor dispersion surface plasmon resonance (SPR) technique. For the first time, HSA sites revealed a high-affinity binding site for flavonoid interactions. Out of the four flavonoids that we examined, quercetin and kaempferol showed the strongest equilibrium binding affinities (KD) of 63 ± 0.03 nM and 37 ± 0.07 nM, respectively. GSTP1 displayed lower affinities in the micromolar range towards all of the flavonoids tested. The interactions of flavonoids with HSA and GSTP1 were studied successfully using this novel SPR assay method. The new method is compatible with both kinetic and equilibrium analyses.
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Affiliation(s)
- Preejith P Vachali
- Moran Eye Center, University of Utah School of Medicine, 65 Mario Capecchi Drive, Salt Lake City, UT 84132, USA.
| | - Binxing Li
- Moran Eye Center, University of Utah School of Medicine, 65 Mario Capecchi Drive, Salt Lake City, UT 84132, USA.
| | - Brian M Besch
- Moran Eye Center, University of Utah School of Medicine, 65 Mario Capecchi Drive, Salt Lake City, UT 84132, USA.
| | - Paul S Bernstein
- Moran Eye Center, University of Utah School of Medicine, 65 Mario Capecchi Drive, Salt Lake City, UT 84132, USA.
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Jyoti, Mir AR, Habib S, Siddiqui SS, Ali A, Moinuddin. Neo-epitopes on methylglyoxal modified human serum albumin lead to aggressive autoimmune response in diabetes. Int J Biol Macromol 2016; 86:799-809. [PMID: 26861824 DOI: 10.1016/j.ijbiomac.2016.02.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 02/02/2016] [Accepted: 02/04/2016] [Indexed: 01/09/2023]
Abstract
Glyco-oxidation of proteins has implications in the progression of diabetes type 2. Human serum albumin is prone to glyco-oxidative attack by sugars and methylglyoxal being a strong glycating agent may have severe impact on its structure and consequent role in diabetes. This study has probed the methylglyoxal mediated modifications of HSA, the alterations in its immunological characteristics and possible role in autoantibody induction. We observed an exposure of chromophoric groups, loss in the fluorescence intensity, generation of AGEs, formation of cross-linked products, decrease in α-helical content, increase in hydrophobic clusters, FTIR band shift, attachment of methylglyoxal to HSA and the formation of N(ε)-(carboxyethyl) lysine in the modified HSA, when compared to the native albumin. MG-HSA was found to be highly immunogenic with additional immunogenicity invoking a highly specific immune response than its native counterpart. The binding characteristics of circulating autoantibodies in type 2 diabetes mellitus (DM) patients showed the generation of anti-MG-HSA auto-antibodies in the these patients, that are preferentially recognized by the modified albumin. We propose that MG induced structural perturbations in HSA, result in the generation of neo-epitopes leading to an aggressive auto-immune response and may contribute to the immunopathogenesis of diabetes type 2 associated complications.
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Affiliation(s)
- Jyoti
- Department of Biochemistry, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Abdul Rouf Mir
- Department of Biotechnology, Government Degree College, Baramulla, Jammu and Kashmir, India
| | - Safia Habib
- Department of Biochemistry, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Sheelu Shafiq Siddiqui
- Rajeev Gandhi Centre for Diabetes, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Asif Ali
- Department of Biochemistry, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Moinuddin
- Department of Biochemistry, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India.
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Zhang J, Huang S, Han Y, Wang C, Shao W, Fu Z. Investigation on the Interaction of Hydroxyethyl Starch 130/0.4 (Voluven) and Serum Albumin for Pharmacokinetic and Toxicological Implications. J Biochem Mol Toxicol 2016; 30:258-64. [PMID: 26749074 DOI: 10.1002/jbt.21789] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 12/09/2015] [Accepted: 12/15/2015] [Indexed: 11/08/2022]
Abstract
The interaction of hydroxyethyl starch 130/0.4 (Voluven) with human serum albumin (HSA) has been investigated by fluorescence (steady state and synchronous), Fourier transforms infrared (FT-IR), and circular dichroism (CD) spectroscopies. Analysis of the fluorescence quenching data of HSA by Voluven using the Stern-Volmer method revealed the formation of 1:1 ground-state complex. Evaluation of binding parameters and binding energy indicated that the binding reaction was exothermic. On the basis of fluorescence measurements, it was concluded that electrostatic forces play a crucial role in stabilizing the complex. The binding distance was calculated by using Förster resonance energy transfer (FRET) theory. The conformational changes of HSA were obtained qualitatively as well as quantitatively using synchronous fluorescence, FT-IR, and CD. The HSA underwent partial unfolding in the presence of Voluven.
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Affiliation(s)
- Jianzhong Zhang
- Shandong Provincial Hospital Affiliated to Shandong University, Jinan, 250021, People's Republic of China. .,Yantaishan Hospital, Yantai, 264000, People's Republic of China.
| | - Shaoyan Huang
- Yantaishan Hospital, Yantai, 264000, People's Republic of China
| | - Yongbin Han
- People's Hospital of Rizhao, Rizhao, 276826, People's Republic of China
| | - Chenghai Wang
- Yantaishan Hospital, Yantai, 264000, People's Republic of China
| | - Wei Shao
- Yantaishan Hospital, Yantai, 264000, People's Republic of China
| | - Zhijian Fu
- Shandong Provincial Hospital Affiliated to Shandong University, Jinan, 250021, People's Republic of China
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41
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Roy AS, Tripathy DR, Samanta S, Ghosh SK, Dasgupta S. DNA damaging, cell cytotoxicity and serum albumin binding efficacy of the rutin–Cu(ii) complex. MOLECULAR BIOSYSTEMS 2016; 12:1687-701. [DOI: 10.1039/c6mb00161k] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rutin–Cu(ii) complex causes DNA damage and is also able to inhibit the growth of human HeLa cells. This complex binds with serum albuminsviahydrophobic forces.
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Affiliation(s)
- Atanu Singha Roy
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | | | - Sintu Samanta
- Department of Biotechnology
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Sudip K. Ghosh
- Department of Biotechnology
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Swagata Dasgupta
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
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42
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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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43
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Singha Roy A, Ghosh P, Dasgupta S. Glycation of human serum albumin alters its binding efficacy towards the dietary polyphenols: a comparative approach. J Biomol Struct Dyn 2015; 34:1911-8. [DOI: 10.1080/07391102.2015.1094749] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Atanu Singha Roy
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | - Pooja Ghosh
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | - Swagata Dasgupta
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
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44
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Jahanban-Esfahlan A, Panahi-Azar V, Sajedi S. Spectroscopic and molecular docking studies on the interaction betweenN-acetyl cysteine and bovine serum albumin. Biopolymers 2015; 103:638-45. [DOI: 10.1002/bip.22697] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 06/22/2015] [Indexed: 12/17/2022]
Affiliation(s)
- Ali Jahanban-Esfahlan
- Biotechnology Research Centre; Tabriz University of Medical Sciences; Tabriz Iran
- Student Research Committee; Tabriz University of Medical Sciences; Tabriz Iran
| | - Vahid Panahi-Azar
- Drug Applied Research Centre; Tabriz University of Medical Sciences; Tabriz Iran
| | - Sanaz Sajedi
- Drug Applied Research Centre; Tabriz University of Medical Sciences; Tabriz Iran
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45
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Ariga GG, Naik PN, Nandibewoor ST, Chimatadar SA. Study of fluorescence interaction and conformational changes of bovine serum albumin with histamine H1-receptor-drug epinastine hydrochloride by spectroscopic and time-resolved fluorescence methods. Biopolymers 2015. [DOI: 10.1002/bip.22707] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Girish G. Ariga
- P.G. Department of Studies in Chemistry; Karnatak University Dharwad; Pavate Nagar Dharwad 580003 Karnataka India
| | - Praveen N. Naik
- P.G. Department of Studies in Chemistry; Karnatak University Dharwad; Pavate Nagar Dharwad 580003 Karnataka India
| | - Sharanappa T. Nandibewoor
- P.G. Department of Studies in Chemistry; Karnatak University Dharwad; Pavate Nagar Dharwad 580003 Karnataka India
| | - Shivamurti A. Chimatadar
- P.G. Department of Studies in Chemistry; Karnatak University Dharwad; Pavate Nagar Dharwad 580003 Karnataka India
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46
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Li S, Tang L, Bi H. Study on the interaction between pelargonidin-3-O
-glucoside and bovine serum albumin using spectroscopic, transmission electron microscopy and molecular modeling techniques. LUMINESCENCE 2015; 31:442-452. [DOI: 10.1002/bio.2980] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 06/25/2015] [Accepted: 06/26/2015] [Indexed: 01/26/2023]
Affiliation(s)
- Shu Li
- College of Life Science; Shandong Normal University; Jinan Shandong Province People's Republic of China
| | - Lin Tang
- College of Life Science; Shandong Normal University; Jinan Shandong Province People's Republic of China
| | - Hongna Bi
- College of Life Science; Shandong Normal University; Jinan Shandong Province People's Republic of China
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47
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Sudha N, Enoch IVMV. Binding Modes of Cabergoline to Bovine Serum Albumin in Free- and β-Cyclodextrin-Encapsulated Forms: Differences in Quenching Behavior and Förster Resonance Energy Transfer. J SOLUTION CHEM 2015. [DOI: 10.1007/s10953-015-0355-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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48
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Wang Q, Sun Q, Ma X, Rao Z, Li H. Probing the binding interaction of human serum albumin with three bioactive constituents of Eriobotrta japonica leaves: Spectroscopic and molecular modeling approaches. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 148:268-276. [DOI: 10.1016/j.jphotobiol.2015.04.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 04/25/2015] [Accepted: 04/27/2015] [Indexed: 11/30/2022]
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49
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Inhibitory effect of quercetin in the formation of advance glycation end products of human serum albumin: An in vitro and molecular interaction study. Int J Biol Macromol 2015; 79:336-43. [PMID: 25982953 DOI: 10.1016/j.ijbiomac.2015.05.004] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Revised: 05/04/2015] [Accepted: 05/06/2015] [Indexed: 01/07/2023]
Abstract
Non-enzymatic glycation entails the reaction between the carbonyl group of a sugar with the amino group of a protein giving rise to Schiff base and Amadori products. The formation of advanced glycation end products (AGEs) leads to the generation of free radicals, which play an important role in the pathophysiology of ageing and diabetes. Bioavailable dietary antioxidants like quercetin (QC) are thought to inhibit AGEs formation. This study was aimed to investigate the effect of quercetin on AGE formation and features the glycation of human serum albumin (HSA) and its characterization by various spectroscopic techniques. The effect of quercetin, against the formation of AGEs was studied using a glycated human serum albumin product, haemoglobin-δ-gluconolactone, and aminoguanidine. The results were then corroborated with estimation of protein oxidation, lipid peroxidation and comet assay. On the basis of the experimental data, computational docking studies were then performed to understand the location of the site of quercetin binding and its best bound conformation with respect to human serum albumin. Through this study we have demonstrated the mechanism of formation of AGE and its inhibition by quercetin. We have also suggested that the supplementation with dietary antioxidants like quercetin might protect against free radical toxicity.
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50
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Li X, Yang Z. Interaction of oridonin with human serum albumin by isothermal titration calorimetry and spectroscopic techniques. Chem Biol Interact 2015; 232:77-84. [PMID: 25816984 DOI: 10.1016/j.cbi.2015.03.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 03/09/2015] [Accepted: 03/17/2015] [Indexed: 11/19/2022]
Abstract
Oridonin has been traditionally and widely used for treatment of various human diseases due to its uniquely biological, pharmacological and physiological functions. In this study, the interaction between oridonin and human serum albumin (HSA) was investigated using isothermal titration calorimetry (ITC), in combination with fluorescence spectroscopy and UV-vis absorption spectroscopy. We found that the hydrogen bond and van der Waals force are the major binding forces in the binding of oridonin to HSA. The binding of oridonin to HSA is driven by favorable enthalpy and unfavorable entropy. Oridonin can quench the fluorescence of HSA through a static quenching mechanism. The binding constant between oridonin and HSA is moderate and the equilibrium fraction of unbound oridonin f(u) > 60%. Binding site I is found to be the primary binding site for oridonin. Additionally, oridonin may induce conformational changes of HSA and affect its biological function as the carrier protein. The results of the current study suggest that oridonin can be stored and transported from the circulatory system to reach its target organ to provide its therapeutic effects. But its side-effect in the clinics cannot be overlook. The study provides an accurate and full basic data for clarifying the binding mechanism of oridonin with HSA and is helpful for understanding its effect on protein function during the blood transportation process and its biological activity in vivo.
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Affiliation(s)
- Xiangrong Li
- Department of Chemistry, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China.
| | - Zhenhua Yang
- Department of Chemistry, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
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