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Iqbal Z, Fauzia Farheen Zofair S, Ahmed S, Sharma M, Younus H, Mahmood R. Interaction of plant phenol vanillin with human hemoglobin: A spectroscopic and molecular docking study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 322:124831. [PMID: 39024790 DOI: 10.1016/j.saa.2024.124831] [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: 11/15/2023] [Revised: 07/12/2024] [Accepted: 07/13/2024] [Indexed: 07/20/2024]
Abstract
Vanillin is a phenolic aldehyde widely used as a flavouring agent in the food industry. Vanillin has many health benefits and has gained attention in pharmacological industries also, due to its antioxidant properties and non-toxic nature. The interaction of vanillin with human hemoglobin (hHb), an abundant tetrameric heme protein, was investigated by several spectroscopic techniques and molecular modeling methods. UV-visible spectra showed that the binding of vanillin to hHb induces structural changes due to alterations in the micro-environment of hHb. Vanillin quenches the intrinsic fluorescence of hHb by the dynamic mechanism, which was confirmed by both temperature dependent and time resolved fluorescence studies. Vanillin binds spontaneously to hHb at a single site and the binding is stabilized by hydrogen bonds and hydrophobic interactions. The circular dichroism spectra showed that the binding of vanillin altered the secondary structure of hHb due to change in its alpha-helical content. Molecular docking identified the amino acids of hHb involved in binding to vanillin and also that the free energy change of the binding reaction is -5.5 kcal/mol. Thus, our results indicate that vanillin binds spontaneously to hHb at a single site and alters its secondary structure. This will help in understanding the potential use of vanillin and related antioxidants as therapeutic agents in various hematological disorders.
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Affiliation(s)
- Zarmin Iqbal
- Department of Biochemistry, Aligarh Muslim University, Aligarh 202002, UP, India
| | - Syeda Fauzia Farheen Zofair
- Interdisciplinary Biotechnology Unit, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, UP, India
| | - Shahbaz Ahmed
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Monika Sharma
- Department of Biochemistry, Aligarh Muslim University, Aligarh 202002, UP, India
| | - Hina Younus
- Interdisciplinary Biotechnology Unit, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, UP, India
| | - Riaz Mahmood
- Department of Biochemistry, Aligarh Muslim University, Aligarh 202002, UP, India.
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Wang S, Wang M, Cui J, Lian D, Li L. Inhibition Effect of Okanin Toward Human Cytochrome P450 3A4 and 2D6 with Multi-spectroscopic Studies and Molecular Docking. J Fluoresc 2024; 34:203-212. [PMID: 37191827 DOI: 10.1007/s10895-023-03258-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 05/02/2023] [Indexed: 05/17/2023]
Abstract
Okanin, a major flavonoid of a popular herb tea, Coreopsis tinctoria Nutt., showed strong inhibition on CYP3A4 and CYP2D6. The strong interaction between okanin and CYPs were determined by enzyme kinetics, multispectral technique and molecular docking. The inhibition type of two enzymes, CYP3A4 and CYP2D6, by okanin are mixed and non-competitive inhibition type, respectively. The IC50 values and the binding constant of okanin to CYP3A4 can be deduced that the interaction was stronger than that of CYP2D6. The Conformations of CYP3A4 and CYP2D6 were changed by okanin. The evidence from fluorescence measurement along with molecular docking verified that these two CYPs were bound with okanin by hydrogen bonds and hydrophobic forces. Our investigation suggested that okanin may lead to interactions between herb and drug by inhibiting CYP3A4 and CYP2D6 activities, thus its consumption should be taken with caution.
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Affiliation(s)
- Suqing Wang
- The College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Meizi Wang
- The College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Jingjing Cui
- The College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Di Lian
- The College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Li Li
- The College of Chemistry, Changchun Normal University, Changchun, 130032, China.
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Tavares MC, Dos Santos Nascimento IJ, de Aquino TM, de Oliveira Brito T, Macedo F, Modolo LV, de Fátima Â, Santos JCC. The influence of N-alkyl chains in benzoyl-thiourea derivatives on urease inhibition: Soil studies and biophysical and theoretical investigations on the mechanism of interaction. Biophys Chem 2023; 299:107042. [PMID: 37263179 DOI: 10.1016/j.bpc.2023.107042] [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: 02/27/2023] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 06/03/2023]
Abstract
Ureases are enzymes produced by fungi, plants, and bacteria associated with agricultural and clinical problems. The urea hydrolysis in NH3 and CO2 leads to the loss of N-urea fertilizers in soils and changes the human stomach microenvironment, favoring the colonization of H. pylori. In this sense, it is necessary to evaluate potential enzyme inhibitors to mitigate the effects of their activities and respond to scientific and market demands to produce fertilizers with enhanced efficiency. Thus, biophysical and theoretical studies were carried out to evaluate the influence of the N-alkyl chain in benzoyl-thiourea derivatives on urease enzyme inhibition. A screening based on IC50, binding constants, and theoretical studies demonstrated that BTU1 without the N-alkyl chain (R = H) was more active than other compounds, so the magnitude of the interaction was determined as BTU1 > BTU2 > BTU3 > BTU4 > BTU5, corresponding to progressively increased chain length. Thus, BTU1 was selected for interaction and soil application essays. The binding constants (Kb) for the supramolecular urease-BTU1 complex ranged from 7.95 to 5.71 × 103 M-1 at different temperatures (22, 30, and 38 °C), indicating that the preferential forces responsible for the stabilization of the complex are hydrogen bonds and van der Waals forces (ΔH = -15.84 kJ mol-1 and ΔS = -36.61 J mol-1 K-1). Theoretical and experimental results (thermodynamics, synchronous fluorescence, and competition assay) agree and indicate that BTU1 is a mixed inhibitor. Finally, urease inhibition was evaluated in the four soil samples, where BTU1 was as efficient as NBPT (based on ANOVA two-way and Tukey test with 95% confidence), with an average inhibition of 20% of urease activity. Thus, the biophysics and theoretical studies are strategies for evaluating potential inhibitors and showed that increasing the N-alkyl chain in benzoyl-thiourea derivatives did not favor urease inhibition.
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Affiliation(s)
- Maria Célia Tavares
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Maceió, AL, Brazil; Instituto Federal de Educação, Ciência e Tecnologia de Alagoas, Campus Batalha, AL, Brazil
| | | | | | - Tiago de Oliveira Brito
- Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Fernando Macedo
- Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Luzia Valentina Modolo
- Departamento de Botânica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ângelo de Fátima
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
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Shahabadi N, Zendehcheshm S, Mahdavi M. Exploring the In‐Vitro Antibacterial Activity and Protein (Human Serum Albumin, Human Hemoglobin and Lysozyme) Interaction of Hexagonal Silver Nanoparticle Obtained from Wood Extract of Wild Cherry Shrub. ChemistrySelect 2023. [DOI: 10.1002/slct.202204672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Nahid Shahabadi
- Inorganic Chemistry Department, Faculty of Chemistry Razi University Kermanshah Iran
- Medical Biology Research Center (MBRC) Kermanshah University of Medical Sciences Kermanshah Iran
| | - Saba Zendehcheshm
- Inorganic Chemistry Department, Faculty of Chemistry Razi University Kermanshah Iran
- Medical Biology Research Center (MBRC) Kermanshah University of Medical Sciences Kermanshah Iran
| | - Mohammad Mahdavi
- Inorganic Chemistry Department, Faculty of Chemistry Razi University Kermanshah Iran
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Quds R, Amiruddin Hashmi M, Iqbal Z, Mahmood R. Interaction of mancozeb with human hemoglobin: Spectroscopic, molecular docking and molecular dynamic simulation studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 280:121503. [PMID: 35717929 DOI: 10.1016/j.saa.2022.121503] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 06/09/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
Mancozeb is a broad-spectrum fungicide used extensively in agriculture to protect plants from numerous diseases. Hemolysis of human erythrocytes on exposure to mancozeb has been reported. In the present study, we investigated the interaction of mancozeb with human hemoglobin (Hb) using multi-spectroscopic techniques, molecular docking and molecular dynamic simulation. UV-visible spectroscopy studies suggested intimate binding of mancozeb to Hb. Mancozeb quenched the intrinsic fluorescence of Hb and Stern-Volmer plots revealed that the quenching mechanism was of static type. Evaluation of thermodynamic parameters indicated that the binding of Hb to mancozeb was spontaneous, with van der Waals forces and hydrogen bonding being the key contributors in the binding reaction. Synchronous fluorescence experiments demonstrated that mancozeb altered the microenvironment around tryptophan residues, whereas polarity around tyrosine residues was not changed. Circular dichroism studies showed a decrease in the α helical content of Hb upon interaction with mancozeb. The inhibition of esterase activity showed that mancozeb can impair the enzymatic functions of Hb. Molecular docking study revealed that strong binding affinity existed between mancozeb and Hb, with hydrophobic forces playing a crucial role in the interaction. Molecular dynamic simulation showed that mancozeb formed a stable complex with Hb resulting in slight unfolding of the protein. To sum up, the results of this study show that mancozeb binds strongly to Hb, induces conformational changes in Hb and adversely affects its function.
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Affiliation(s)
- Ruhul Quds
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India
| | - Md Amiruddin Hashmi
- Interdisciplinary Biotechnology Unit, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India
| | - Zarmin Iqbal
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India
| | - Riaz Mahmood
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India.
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Shahabadi N, Zendehcheshm S, Khademi F. Green Synthesis, in vitro Cytotoxicity, Antioxidant Activity and Interaction Studies of CuO Nanoparticles with DNA, Serum Albumin, Hemoglobin and Lysozyme. ChemistrySelect 2022. [DOI: 10.1002/slct.202202916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nahid Shahabadi
- Inorganic Chemistry Department Faculty of Chemistry Razi University Kermanshah Iran
| | - Saba Zendehcheshm
- Inorganic Chemistry Department Faculty of Chemistry Razi University Kermanshah Iran
| | - Fatemeh Khademi
- Medical Biology Research Center Health Technology Institute Kermanshah University of Medical Sciences Kermanshah Iran
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Meng X, Nan G, Shi B, Li W, Liu H, Lin R, Yang G, Zheng S. Investigation on the interaction between myricetin and dihydromyricetin with trypsin, α-chymotrypsin, lysozyme by spectroscopy and molecular docking methods. LUMINESCENCE 2022; 37:810-821. [PMID: 35289053 DOI: 10.1002/bio.4225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/07/2022] [Accepted: 03/09/2022] [Indexed: 11/09/2022]
Abstract
The interaction between myricetin and dihydromyricetin with trypsin, α-chymotrypsin and lysozyme was investigated using multispectral and molecular docking methods. The results of fluorescence quenching revealed that myricetin and dihydromyricetin could quench the intrinsic fluorescence of three different proteinases through a static quenching procedure. The binding constant and number of binding sites at different temperatures were measured. The thermodynamic parameters obtained at different temperatures showed van der Waals' interactions and hydrogen bonds played the main roles in the interaction of myricetin with trypsin and lysozyme, hydrophobic force was dominant both in myricetin with α-chymotrypsin interaction and dihydromyricetin with trypsin and lysozyme interaction, as for the electrostatic forces, it was the mainly driving force in dihydromyricetin binding to α-chymotrypsin. There was non-radiative energy transfer between three proteinases and myricetin or dihydromyricetin with high probability. The microenvironment of trypsin, α-chymotrypsin and lysozyme is changed. The docking studies revealed that myricetin and dihydromyricetin entered the hydrophobic cavity of three proteinases and formed hydrogen bond. The binding affinity of myricetin or dihydromyricetin is difference with the trypsin, α-chymotrypsin and lysozyme due to the different molecular structure.
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Affiliation(s)
- Xianxin Meng
- School of Pharmacy, Xi'an Jiaotong University, Shaanxi, P.R. China
| | - Guanjun Nan
- School of Pharmacy, Xi'an Jiaotong University, Shaanxi, P.R. China
| | - Bowen Shi
- Anesthesia Operation Center, Xi'an International Medical Center, Shaanxi, P.R. China
| | - Wanlu Li
- School of Pharmacy, Xi'an Jiaotong University, Shaanxi, P.R. China
| | - Henglin Liu
- School of Pharmacy, Xi'an Jiaotong University, Shaanxi, P.R. China
| | - Rong Lin
- School of Pharmacy, Xi'an Jiaotong University, Shaanxi, P.R. China
| | - Guangde Yang
- School of Pharmacy, Xi'an Jiaotong University, Shaanxi, P.R. China
| | - Shaohua Zheng
- Department of Anesthesiology and Operation, The First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi, P.R. China
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Shahabadi N, Akbari A, Karampour F, Falsafi M, Zendehcheshm S. In vitro cytotoxicity, antibacterial activity and HSA and ct-DNA interaction studies of chlorogenic acid loaded on γ-Fe 2O 3@SiO 2 as new nanoparticles. J Biomol Struct Dyn 2022; 41:2300-2320. [PMID: 35120416 DOI: 10.1080/07391102.2022.2030799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
In this study, nanoparticles with both anticancer and antibacterial features were synthesized through loading chlorogenic acid (CGA) of essential oils on magnetic nanoparticles (MNPs). Characterization of γ-Fe2O3@SiO2-CGA MNPs was performed using Fourier transform infrared (FT-IR) spectroscopy and transmission electron microscopy (TEM) that show effective coating of the MNPs with SiO2 and CGA ligand and spherical shape of the nanoparticles with a mean diameter of 16 nm, respectively. The cytotoxicity study demonstrated that γ-Fe2O3@SiO2-CGA MNPs had fewer toxic effects on normal cells (Huvec) than on cancerous cells (U-87 MG, A-2780 and A-549), and could be a new potential candidate for use in biological and pharmaceutical applications. The interaction of calf thymus deoxyribonucleic acid (ct-DNA) with γ-Fe2O3@SiO2-CGA MNPs indicated that the anticancer activity might be associated with the DNA binding properties of γ-Fe2O3@SiO2-CGA MNPs. Moreover, the interaction of γ-Fe2O3@SiO2-CGA MNPs with human serum albumin (HSA) suggests that the native conformation of HSA was preserved at the level of secondary structure, indicating that the γ-Fe2O3@SiO2-CGA MNPs do not show any cytotoxicity effect when they are injected into the blood. Antibacterial tests were performed and represented γ-Fe2O3@SiO2-CGA MNPs attained better antibacterial function than CGA as free.
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Affiliation(s)
- Nahid Shahabadi
- Department of Inorganic Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran.,Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Alireza Akbari
- Chemistry Department, Payame Noor University, Tehran, Iran
| | | | | | - Saba Zendehcheshm
- Department of Inorganic Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran
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Shahabadi N, Zendehcheshm S, Khademi F. Selenium nanoparticles: Synthesis, in-vitro cytotoxicity, antioxidant activity and interaction studies with ct-DNA and HSA, HHb and Cyt c serum proteins. ACTA ACUST UNITED AC 2021; 30:e00615. [PMID: 33948440 PMCID: PMC8080047 DOI: 10.1016/j.btre.2021.e00615] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 03/29/2021] [Accepted: 04/06/2021] [Indexed: 12/18/2022]
Abstract
Spherical SeNPs with average size 134 nm were synthesized employing Vitamin C. The synthesized SeNPs represented great antioxidant and anticancer activity. The interaction of SeNPs with ct-DNA, HSA, HHb and Cyt c was investigated. Nano-selenium can bind to ct-DNA through partial intercalation binding mode. HSA, HHb and Cyt c could keep their biological activity even in the presence of Nano-selenium.
The aim of this study was the synthesis of selenium nanoparticles (SeNPs) employing vitamin C as a biocompatible and low toxic reducing agent. The synthesized selenium nanoparticles were characterized by using UV–vis, FT-IR, SEM-EDX, TEM, DLS, and zeta potential measurements. The results of the DPPH free radical scavenging assay demonstrate that this synthesized nano-selenium has strong potentials to scavenge the free radicals and cytotoxicity against MCF-7 and Raji Burkitt's lymphoma cancer cell lines. The interaction of calf thymus DNA (ct-DNA) with SeNPs indicated that the anticancer activity might be associated with the DNA-binding properties of nano-selenium. Finally, it was found that the synthesized nano-selenium can bind to the most important blood proteins such as human serum albumin (HSA), human hemoglobin (HHb), and Cytochrome c (Cyt c). The results showed that the secondary structure of these proteins remains unchanged, suggesting that the synthesized nano-selenium could be employed as a carrier in the drug delivery system without any cytotoxicity effect.
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Affiliation(s)
- Nahid Shahabadi
- Department of Inorganic Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran.,Center of Medical Biology Research (MBRC) Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Saba Zendehcheshm
- Department of Inorganic Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran.,Center of Medical Biology Research (MBRC) Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Fatemeh Khademi
- Center of Medical Biology Research, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Bai N, Gan Y, Li X, Gao S, Yu W, Wang R, Chang J. The role of chlorine atom on the binding between acrylonitrile derivatives and fat mass and obesity‐associated protein. J Mol Recognit 2020; 34:e2880. [DOI: 10.1002/jmr.2880] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/10/2020] [Accepted: 10/20/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Ning Bai
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou China
| | - Ya Gan
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou China
| | - Xitong Li
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou China
| | - Shuting Gao
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou China
| | - Wenquan Yu
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou China
| | - Ruiyong Wang
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou China
| | - Junbiao Chang
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou China
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de Magalhães Silva M, de Araújo Dantas MD, da Silva Filho RC, Dos Santos Sales MV, de Almeida Xavier J, Leite ACR, Goulart MOF, Grillo LAM, de Barros WA, de Fátima Â, Figueiredo IM, Santos JCC. Toxicity of thimerosal in biological systems: Conformational changes in human hemoglobin, decrease of oxygen binding capacity, increase of protein glycation and amyloid's formation. Int J Biol Macromol 2020; 154:661-671. [PMID: 32198046 DOI: 10.1016/j.ijbiomac.2020.03.156] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/11/2020] [Accepted: 03/16/2020] [Indexed: 02/06/2023]
Abstract
Thimerosal (TH), an organomercurial compound, is used as a preservative in vaccines and cosmetics. Its interaction with human hemoglobin (Hb) was investigated under physiological conditions using biophysical and biological assays, aiming to evaluate hazardous effects. TH interacts spontaneously with Hb (stoichiometry 2:1, ligand-protein), preferably by electrostatic forces, with a binding constant of 1.41 × 106 M-1. Spectroscopic data allows to proposing that TH induces structural changes in Hg, through ethylmercury transfer to human Hb-Cys93 residues, forming thiosalicylic acid, which, in turn, interacts with the positive side of the amino acid in the Hb-HgEt adduct chain. As a consequence, inhibition of Hb-O2 binding capacity up to 72% (human Hb), and 50% (human erythrocytes), was verified. Dose-dependent induction of TH forming advanced glycation end products (AGE) and protein aggregates (amyloids) was additionally observed. Finally, these results highlight the toxic potential of the use of TH in biological systems, with a consequent risk to human health.
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Affiliation(s)
- Marina de Magalhães Silva
- Institute of Chemistry and Biotechnology, Federal University of Alagoas (UFAL), Campus A.C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | - Maria Dayanne de Araújo Dantas
- Institute of Chemistry and Biotechnology, Federal University of Alagoas (UFAL), Campus A.C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | - Reginaldo Correia da Silva Filho
- Institute of Chemistry and Biotechnology, Federal University of Alagoas (UFAL), Campus A.C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | - Marcos Vinicius Dos Santos Sales
- Institute of Chemistry and Biotechnology, Federal University of Alagoas (UFAL), Campus A.C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | - Jadriane de Almeida Xavier
- Institute of Chemistry and Biotechnology, Federal University of Alagoas (UFAL), Campus A.C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | - Ana Catarina Rezende Leite
- Institute of Chemistry and Biotechnology, Federal University of Alagoas (UFAL), Campus A.C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | - Marília Oliveira Fonseca Goulart
- Institute of Chemistry and Biotechnology, Federal University of Alagoas (UFAL), Campus A.C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | | | - Wellington Alves de Barros
- Department of Chemistry, Federal University of Minas Gerais (UFMG), 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Ângelo de Fátima
- Department of Chemistry, Federal University of Minas Gerais (UFMG), 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Isis Martins Figueiredo
- Institute of Chemistry and Biotechnology, Federal University of Alagoas (UFAL), Campus A.C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | - Josué Carinhanha Caldas Santos
- Institute of Chemistry and Biotechnology, Federal University of Alagoas (UFAL), Campus A.C. Simões, 57072-900 Maceió, Alagoas, Brazil.
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de Lyra ACF, Dos Santos Silva AL, Dos Santos ECL, López AMQ, da Silva JCS, Figueiredo IM, Santos JCC. Molecular interaction of sulfonamides and ovalbumin, an allergenic egg protein, exploring biophysical, theoretical and biological studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117747. [PMID: 31727521 DOI: 10.1016/j.saa.2019.117747] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 10/27/2019] [Accepted: 11/01/2019] [Indexed: 06/10/2023]
Abstract
Biophysical, theoretical and biological in vitro studies were carried out to evaluate the interaction of the main allergen protein of egg white (ovalbumin, OVA) with sulphonamides (SA): sulphathiazole (S1), sulfaquinoxaline (S2), sulfadimethoxine (S3) and sulfamethazine (S4). The binding constants for the OVA-SA supramolecular complexes ranged from 1.20 to 30.66 × 105 M-1, observing the following order of affinity: S1 > S2 > S4 > S3. The preferential forces in the stabilization of the OVA complexes with S2 and S3 were hydrogen bonds and Van der Waals forces, whereas for OVA-S1 and OVAS4, were electrostatic interactions. Interaction process led to a change in the native structure of the protein, which may potentiate its natural allergenicity. Cations Ca(II), Mg(II) and Fe(III) favor the interaction of OVA with S1 and S2. The theoretical studies performed were consistent with the spectroscopic data. Finally, it was found that the interaction process for sulfonamides evaluated with OVA change the inhibition activity profile these antibiotics against strains of Escherichia coli ATCC 25922 and Bacillus megaterium APFSG3isox, but not the minimal inhibitory concentration values.
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Affiliation(s)
- Ana Carolina Fradique de Lyra
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Campus A. C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | - Amanda L Dos Santos Silva
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Campus A. C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | - Elane Cristina L Dos Santos
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Campus A. C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | - Ana Maria Queijeiro López
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Campus A. C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | - Júlio Cosme S da Silva
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Campus A. C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | - Isis Martins Figueiredo
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Campus A. C. Simões, 57072-900 Maceió, Alagoas, Brazil
| | - Josué Carinhanha Caldas Santos
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Campus A. C. Simões, 57072-900 Maceió, Alagoas, Brazil.
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Liu F, Zhang Y, Yu Q, Shen Y, Zheng Z, Cheng J, Zhang W, Ye Y. Exploration of the binding between ellagic acid, a potentially risky food additive, and bovine serum albumin. Food Chem Toxicol 2019; 134:110867. [PMID: 31586655 DOI: 10.1016/j.fct.2019.110867] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/17/2019] [Accepted: 10/01/2019] [Indexed: 12/21/2022]
Abstract
Ellagic acid (EA), a natural plant polyphenol, is usually used as a functional additive in variety of health foods. However, the potential toxicity of EA to human health should be paid enough attention. To clarify its biological toxicity in vivo, this study explored the binding mechanism of EA with bovine serum albumin (BSA) by means of spectroscopic approaches and molecular docking insimulative physiological conditions. The results showed that the mixture of BSA with EA could spontaneously cause the formation of BSA-EA complex through electrostatic interaction under simulative physiological conditions (0.01 mol·L-1Tris-HCl, 0.015 mol L-1 NaCl, pH = 7.4). Molecular docking experiments revealed that EA was primarily bound to the hydrophobic pocket of the site I (subdomain IIA) of BSA. It has been reported that the binding of small functional molecules to serum albumins remarkably impacts their absorption, distribution, metabolism, and excretion features. Therefore, this study might be helpful for human to have an in-depth understanding of the biological effect of EA in vivo and guide human to take it safely and reasonably.
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Affiliation(s)
- Fengru Liu
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Yiyin Zhang
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Qiuyang Yu
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Yizhong Shen
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China.
| | - Zhi Zheng
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Jieshun Cheng
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Wencheng Zhang
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Yingwang Ye
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China.
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14
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Makarska-Bialokoz M, Lipke A. Study of the binding interactions between uric acid and bovine serum albumin using multiple spectroscopic techniques. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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15
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Makarska-Bialokoz M. Comparative study of binding interactions between porphyrin systems and aromatic compounds of biological importance by multiple spectroscopic techniques: A review. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 200:263-274. [PMID: 29694930 DOI: 10.1016/j.saa.2018.04.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 03/13/2018] [Accepted: 04/16/2018] [Indexed: 06/08/2023]
Abstract
The specific spectroscopic and redox properties of porphyrins predestine them to fulfill the role of sensors during interacting with different biologically active substances. Monitoring of binding interactions in the systems porphyrin-biologically active compound is a key question not only in the field of physiological functions of living organisms, but also in environmental protection, notably in the light of the rapidly growing drug consumption and concurrently the production of drug effluents. Not always beneficial action of drugs on natural porphyrin systems induces to further studies, with commercially available porphyrins as the model systems. Therefore the binding process between several water-soluble porphyrins and a series of biologically active compounds (e.g. caffeine, guanine, theophylline, theobromine, xanthine, uric acid) has been studied in different aqueous solutions analyzing their absorption and steady-state fluorescence spectra, the porphyrin fluorescence lifetimes and their quantum yields. The magnitude of the binding and fluorescence quenching constants values for particular quenchers decreases in a series: uric acid > guanine > caffeine > theophylline > theobromine > xanthine. In all the systems studied there are characters of static quenching, as a consequence of the π-π-stacked non-covalent and non-fluorescent complexes formation between porphyrins and interacting compounds, accompanied simultaneously by the additional specific binding interactions. The porphyrin fluorescence quenching can be explain by the photoinduced intermolecular electron transfer from aromatic compound to the center of the porphyrin molecule, playing the role of the binding site. Presented results can be valuable for designing of new fluorescent porphyrin chemosensors or monitoring of drug traces in aqueous solutions. The obtained outcomes have also the toxicological and medical importance, providing insight into the interactions of the water-soluble porphyrins with biologically active substances.
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Affiliation(s)
- Magdalena Makarska-Bialokoz
- Department of Inorganic Chemistry, Maria Curie-Sklodowska University, M. C. Sklodowska Sq. 2, 20-031 Lublin, Poland.
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16
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Makarska-Bialokoz M. Interactions of hemin with bovine serum albumin and human hemoglobin: A fluorescence quenching study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 193:23-32. [PMID: 29212045 DOI: 10.1016/j.saa.2017.11.063] [Citation(s) in RCA: 125] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 11/26/2017] [Accepted: 11/29/2017] [Indexed: 05/28/2023]
Abstract
The binding interactions between hemin (Hmi) and bovine serum albumin (BSA) or human hemoglobin (HHb), respectively, have been examined in aqueous solution at pH=7.4, applying UV-vis absorption, as well as steady-state, synchronous and three-dimensional fluorescence spectra techniques. Representative results received for both BSA and HHb intrinsic fluorescence proceeding from the interactions with hemin suggest the formation of stacking non-covalent and non-fluorescent complexes in both the Hmi-BSA and Hmi-HHb systems, with highly possible concurrent formation of a coordinate bond between a group on the protein surface and the metal in Hmi molecule. All the values of calculated parameters, the binding, fluorescence quenching and bimolecular quenching rate constants point to the involvement of static quenching in both the systems studied. The blue shift in the synchronous fluorescence spectra imply the participation of both tryptophan and tyrosine residues in quenching of BSA and HHb intrinsic fluorescence. Depicted outcomes suggest that hemin is supposedly able to influence the physiological functions of BSA and HHb, the most important blood proteins, particularly in case of its overuse.
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Affiliation(s)
- Magdalena Makarska-Bialokoz
- Department of Inorganic Chemistry, Maria Curie-Sklodowska University, M. C. Sklodowska Sq. 2, 20-031 Lublin, Poland.
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17
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Makarska-Bialokoz M. Investigation of the binding affinity in vitamin B12-Bovine serum albumin system using various spectroscopic methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 184:262-269. [PMID: 28528252 DOI: 10.1016/j.saa.2017.05.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 05/06/2017] [Accepted: 05/08/2017] [Indexed: 05/28/2023]
Abstract
The binding affinity between vitamin B12 (VitB12) and bovine serum albumin (BSA) has been investigated in aqueous solution at pH=7.4, employing UV-vis absorption and steady-state, synchronous and three-dimensional fluorescence spectra techniques. Representative effects noted for BSA intrinsic fluorescence resulting from the interactions with VitB12 confirm the formation of π-π stacked non-covalent and non-fluorescent complexes in the system VitB12-BSA. All the determined parameters, the binding, fluorescence quenching and bimolecular quenching rate constants (of the order of 104Lmol-1, 103Lmol-1 and 1011Lmol-1s-1, respectively), as well as Förster resonance energy transfer parameters validate the mechanism of static quenching. The interaction with VitB12 induces folding of the polypeptide chains around Trp residues of BSA, resulting in a more hydrophobic surrounding. Presented outcomes suggest that the addition of VitB12 can lead to the more organized BSA conformation and its more folded tertiary structure, what could influence the physiological functions of bovine serum albumin, notably in case of its overuse or abnormal metabolism.
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Affiliation(s)
- Magdalena Makarska-Bialokoz
- Department of Inorganic Chemistry, Maria Curie-Sklodowska University, M. C. Sklodowska Sq. 2, 20-031 Lublin, Poland.
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18
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Tan S, Wang D, Chi Z, Li W, Shan Y. Study on the interaction between typical phthalic acid esters (PAEs) and human haemoglobin (hHb) by molecular docking. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 53:206-211. [PMID: 28662487 DOI: 10.1016/j.etap.2017.06.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 05/30/2017] [Accepted: 06/19/2017] [Indexed: 06/07/2023]
Abstract
This work has evaluated the binding force between hHb and typcial PAEs (DMP, DEP, DPRP, DBP, DIBP, DHP and DPHP) using molecule docking technique. The DPHP with 3 aromatic rings has the strongest binding (-ΔGbinding: 6.0kcalmol-1) than other PAEs (-ΔGbinding: 2.91∼4.48kcalmol-1). The DMP with the lowest molecular weight has a high binding force (-ΔGbinding: 4.48kcalmol-1), while the DHP with the highest molecular weight has the lowest binding force (-ΔGbinding: 2.91kcalmol-1). When the length of side chain increases, the binding force trend to decrease, regarding the VDW forces and H-bonding. The lgKow-ΔGbinding plotting figure shows that a higher Kow value is accompanied by a lower binding force. The aromatic ring existed in PAEs largely increases the binding force between the hHb and the PAEs. On the other hand, the PAEs with higher number of carbon, meaning a higher hydrophobicity, can enter into the hydrophobic space of hHb centre deeper and bond to different position. The aromatic ring decreases the depth of binding position in the hydrophobic space. This work provides basic data and a theoretical method to assess the transport and accumulation of PAEs in human body, and the cytotoxicity of PAEs to hBRCs.
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Affiliation(s)
- Songwen Tan
- Department of Environmental Engineering, Harbin Institute of Technology, Weihai, 2# Wenhua West Road, Weihai, 264209, PR China
| | - Donglin Wang
- Department of Environmental Engineering, Harbin Institute of Technology, Weihai, 2# Wenhua West Road, Weihai, 264209, PR China; State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Zhenxing Chi
- Department of Environmental Engineering, Harbin Institute of Technology, Weihai, 2# Wenhua West Road, Weihai, 264209, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73# Huanghe Road, Harbin 150090, PR China; Guangzhou Key Laboratory of Environmental Exposure and Health, School of Environment, Jinan University, Guangzhou 510632, PR China.
| | - Weiguo Li
- Department of Environmental Engineering, Harbin Institute of Technology, Weihai, 2# Wenhua West Road, Weihai, 264209, PR China
| | - Ye Shan
- Department of Environmental Engineering, Harbin Institute of Technology, Weihai, 2# Wenhua West Road, Weihai, 264209, PR China
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19
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Makarska-Bialokoz M. Analysis of the binding interaction in uric acid - Human hemoglobin system by spectroscopic techniques. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 178:47-54. [PMID: 28161658 DOI: 10.1016/j.saa.2017.01.063] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 01/10/2017] [Accepted: 01/30/2017] [Indexed: 06/06/2023]
Abstract
The binding interaction between human hemoglobin and uric acid has been studied for the first time, by UV-vis absorption and steady-state, synchronous and three-dimensional fluorescence techniques. Characteristic effects observed for human hemoglobin intrinsic fluorescence during interaction with uric acid at neutral pH point at the formation of stacking non-covalent and non-fluorescent complexes. All the calculated parameters, the binding, fluorescence quenching and bimolecular quenching rate constants, as well as Förster resonance energy transfer parameters confirm the existence of static quenching. The results of synchronous fluorescence measurements indicate that the fluorescence quenching of human hemoglobin originates both from Trp and Tyr residues and that the addition of uric acid could significantly hinder the physiological functions of human hemoglobin.
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Affiliation(s)
- Magdalena Makarska-Bialokoz
- Department of Inorganic Chemistry, Maria Curie-Sklodowska University, M. C. Sklodowska Sq. 2, 20-031 Lublin, Poland.
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20
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Investigation of the interaction between FTO and 3-substituted 2-aminochromones by spectroscopy and molecular modeling. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1873-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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21
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Zhang L, Ren T, Tian X, Wang Z, Yu W, Wang R, Chang J. Investigation of the Interaction between 1,3-Diazaheterocyclic Compounds and the Fat Mass and Obesity-Associated Protein by Fluorescence Spectroscopy and Molecular Modeling. J Fluoresc 2016; 27:369-378. [DOI: 10.1007/s10895-016-1965-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 10/19/2016] [Indexed: 11/28/2022]
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22
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Nan G, Sun J, Ding M, Yang X, Yang G. Interaction behavior between myricetin and dihydromyricetin with pepsin by spectroscopic and docking methods. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.07.055] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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23
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Liu C, Zhang X, Jing H, Miao Y, Zhao L, Han Y, Cui C. Research on drug-receptor interactions and prediction of drug activity via oriented immobilized receptor capillary electrophoresis. Electrophoresis 2016; 36:2433-41. [PMID: 26105113 DOI: 10.1002/elps.201400583] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 05/22/2015] [Accepted: 06/01/2015] [Indexed: 02/06/2023]
Abstract
Oriented covalent immobilized β2 -adrenergic receptor (β2 -AR) CE (OIRCE) was developed to determine the interactions between a set of natural extracts of Radix Paeoniae Rubra (NERPR) and β2 -AR, and to predict the activity of NERPR. The inner capillary surface is chemically bonded with stable β2 -AR coating via microwave-assisted technical synthesis. The modified capillaries were characterized via infrared spectroscopy and fluorescence microscopy. Furthermore, the bonding amounts of β2 -AR were first obtained via fluorescence spectroscopy method. In determining the amount of bonded β2 -AR, the regression equation A = 576 707C + 35.449 and the correlation coefficient 0.9995 were obtained. This result revealed an excellent linear relationship in the range of 2 × 10(-4) mg/mL to 1 × 10(-3) mg/mL. The normalized capacity factor (KRCE ) was obtained using OIRCE in evaluating drug-receptor interactions. Related theories and equations were used to calculate KRCE values from apparent migration times of a solute and EOF. The order of KRCE and the binding constant (Kb ) values between drugs and β2 -AR was well consistent. The results confirmed that the OIRCE and KRCE values can be effectually used to investigate drug-receptor interactions, and OIRCE has the potential to predict drug activity and to select leading compounds from natural chemicals.
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Affiliation(s)
- Chunye Liu
- School of Pharmacy, Xi'an Medical University, Xi'an, P. R. China
| | - Xuejiao Zhang
- School of Pharmacy, Xi'an Medical University, Xi'an, P. R. China
| | - Hui Jing
- School of Pharmacy, Xi'an Medical University, Xi'an, P. R. China
| | - Yanqing Miao
- School of Pharmacy, Xi'an Medical University, Xi'an, P. R. China
| | - Lingzhi Zhao
- School of Pharmacy, Xi'an Medical University, Xi'an, P. R. China
| | - Yan Han
- School of Pharmacy, Xi'an Medical University, Xi'an, P. R. China
| | - Cuixia Cui
- School of Pharmacy, Xi'an Medical University, Xi'an, P. R. China
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24
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Nan G, Wang P, Sun J, Lv J, Ding M, Yang L, Li Y, Yang G. Spectroscopy and molecular docking study on the interaction of daidzein and genistein with pepsin. LUMINESCENCE 2016; 31:1524-1531. [DOI: 10.1002/bio.3139] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 03/08/2016] [Accepted: 03/11/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Guanjun Nan
- School of Pharmacy; Xi'an Jiaotong University; Shaanxi 710061 People's Republic of China
| | - Ping Wang
- Department of Obstetrics and Gynecology; Xi'an No.4 Hospital; Shaanxi 710004 People's Republic of China
| | - Jing Sun
- School of Pharmacy; Xi'an Jiaotong University; Shaanxi 710061 People's Republic of China
| | - Jianhua Lv
- School of Pharmacy; Xi'an Jiaotong University; Shaanxi 710061 People's Republic of China
| | - Meiwen Ding
- School of Pharmacy; Xi'an Jiaotong University; Shaanxi 710061 People's Republic of China
| | - Liu Yang
- School of Pharmacy; Xi'an Jiaotong University; Shaanxi 710061 People's Republic of China
| | - Yiping Li
- School of Pharmacy; Xi'an Jiaotong University; Shaanxi 710061 People's Republic of China
| | - Guangde Yang
- School of Pharmacy; Xi'an Jiaotong University; Shaanxi 710061 People's Republic of China
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25
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Wang R, Li Z, Yang L, Ren T, Zhang L, Wang R. Studies on the interaction between neutral red and bovine hemoglobin by fluorescence spectroscopy and molecular modeling. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.07.066] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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26
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Interaction of cyanidin-3-O-glucoside with three proteins. Food Chem 2015; 196:550-9. [PMID: 26593527 DOI: 10.1016/j.foodchem.2015.09.089] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 08/04/2015] [Accepted: 09/23/2015] [Indexed: 11/23/2022]
Abstract
We studied the binding of cyanidin-3-O-glucoside (C3G) with bovine serum albumin (BSA), hemoglobin (Hb) and myoglobin (Mb), using multi-spectral techniques and molecular modeling. Fluorescence and time-resolved fluorescence studies suggested that C3G quenched BSA, Hb or Mb fluorescence in a static mode with binding constants of 4.159, 0.695 and 1.545 × 10(4) L mol(-1) at 308K, respectively. The thermodynamic parameters represented hydrogen bonds and van der Waals forces dominated the binding. Furthermore, CD, UV-vis, and three-dimensional fluorescence spectra results indicated the secondary structures of BSA, Hb and Mb were partially destroyed by C3G with the α-helix percentage of C3G-Hb and C3G-Mb decreased while that of C3G-BSA was increased. UV-vis spectral results showed these binding interactions partially affected the heme bands of Hb and Mb. In addition, molecular modeling analysis supported the experimental results well. The calculated results of equilibrium fraction showed that the concentration of free C3G in plasma was high enough to be stored and transported from the circulatory system to reach their target sites to provide their therapeutic effects.
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27
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Binding of citreoviridin to human serum albumin: multispectroscopic and molecular docking. BIOMED RESEARCH INTERNATIONAL 2015; 2015:162391. [PMID: 25977915 PMCID: PMC4419221 DOI: 10.1155/2015/162391] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 03/25/2015] [Accepted: 03/27/2015] [Indexed: 11/17/2022]
Abstract
Citreoviridin (CIT), a mycotoxin produced by Penicillium citreonigrum, is a common contaminant of wide range of agriproducts and detrimental to human and animal health. In this study, the interaction of CIT with human serum albumin (HSA) is researched by steady-state fluorescence, ultraviolet-visible (UV-Vis) absorption, circular dichroism (CD) methods, and molecular modeling. The association constants, binding site numbers, and corresponding thermodynamic parameters are used to investigate the quenching mechanism. The alternations of HSA secondary structure in the presence of CIT are demonstrated with UV-Vis, synchronous fluorescence, and CD spectra. The molecular modeling results reveal that CIT can bind with hydrophobic pocket of HSA with hydrophobic and hydrogen bond force. Moreover, an apparent distance of 3.25 nm between Trp214 and CIT is obtained via fluorescence resonance energy transfer method.
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28
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Fotouhi L, Yousefinejad S, Salehi N, Saboury AA, Sheibani N, Moosavi-Movahedi AA. Application of merged spectroscopic data combined with chemometric analysis for resolution of hemoglobin intermediates during chemical unfolding. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt C:1974-1981. [PMID: 25468440 PMCID: PMC6690049 DOI: 10.1016/j.saa.2014.10.120] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 10/21/2014] [Accepted: 10/28/2014] [Indexed: 06/04/2023]
Abstract
Using tetradecyltrimethylammonium bromide (TTAB) as a surfactant denaturant, and augmentation of different spectroscopic data, helped to detect the intermediates of hemoglobin (Hb) during unfolding process. UV-vis, fluorescence, and circular dichroism spectroscopy were used simultaneously to monitor different aspects of hemoglobin species from the tertiary or secondary structure points of view. Application of the multivariate curve resolution-alternating least square (MCR-ALS), using the initial estimates of spectral profiles and appropriate constraints on different parts of augmented spectroscopic data, showed good efficiency for characterization of intermediates during Hb unfolding. These results indicated the existence of five protein species, including three intermediate-like compounds in this process. The unfolding pathway in the presence of TTAB included conversion of oxyhemoglobin into deoxyhemoglobin, and then ferrylhemoglobin, ferrihemoglobin or aquamethemoglobin, which finally transformed into hemichrome. This is the first application of chemometric analysis on the merged spectroscopic data related to chemical denaturation of a protein. These types of analysis in multisubunit proteins not only increase the domain of information, but also can reduce the ambiguities of the obtained results.
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Affiliation(s)
- L Fotouhi
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - S Yousefinejad
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - N Salehi
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - A A Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran
| | - N Sheibani
- Department of Ophthalmology and Visual Sciences and McPherson Eye Research Institute, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - A A Moosavi-Movahedi
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran.
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