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Zhao T, Sun H, Ji S, Yang B, Wang Z, Liu Y, Chen C, Lu B. The Effect of Whey Protein Isolate Hydrolysate on Digestive Properties of Phytosterol. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:12738-12751. [PMID: 38788151 DOI: 10.1021/acs.jafc.4c01111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
Phytosterol (PS) is a steroid, and its bioavailability can be enhanced by interacting with protein in the C-24 hydroxyl group. The interaction between sterols and amino acid residues in proteins can be enhanced by enzymatic hydrolysis. Phytosterol and whey insulation hydrolysates (WPH1-4) fabricated by the Alcalase enzyme at different enzymatic hydrolysis times were selected as delivery systems to simulate sterol C-24 hydroxyl group interaction with protein. Increasing hydrolysis time can promote the production of β-Lg, which raises the ratio of β-turn in the secondary structure and promotes the formation of interaction between WPH and PS. The correlation coefficient between hydrogen bonds and encapsulation efficiency (EE) and bioaccessibility is 0.91 and 0.88 (P < 0.05), respectively, indicating that hydrogen bonds of two components significantly influenced the combination by concealing the hydrophobic amino acids and some residues, which improved PS EE and bioavailability by 3.03 and 2.84 times after PS was combined with the WPI hydrolysate. These findings are expected to enhance the absorption of PS and other macromolecules by protein enzymatic hydrolysis to broaden their applications for food.
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Affiliation(s)
- Tian Zhao
- College of Biosystems Engineering and Food Science, Key Laboratory for Quality Evaluation and Health Benefit of Agro-Products of Ministry of Agriculture and Rural Affairs, Key Laboratory for Quality and Safety Risk Assessment of Agro-Products Storage and Preservation of Ministry of Agriculture and Rural Affairs, Zhejiang University, Hangzhou 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Haihui Sun
- Yichun Dahaigui Life Science Co., Ltd., Yichun 336000, China
| | - Shengyang Ji
- College of Biosystems Engineering and Food Science, Key Laboratory for Quality Evaluation and Health Benefit of Agro-Products of Ministry of Agriculture and Rural Affairs, Key Laboratory for Quality and Safety Risk Assessment of Agro-Products Storage and Preservation of Ministry of Agriculture and Rural Affairs, Zhejiang University, Hangzhou 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Bowen Yang
- College of Biosystems Engineering and Food Science, Key Laboratory for Quality Evaluation and Health Benefit of Agro-Products of Ministry of Agriculture and Rural Affairs, Key Laboratory for Quality and Safety Risk Assessment of Agro-Products Storage and Preservation of Ministry of Agriculture and Rural Affairs, Zhejiang University, Hangzhou 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Zhangtie Wang
- College of Biosystems Engineering and Food Science, Key Laboratory for Quality Evaluation and Health Benefit of Agro-Products of Ministry of Agriculture and Rural Affairs, Key Laboratory for Quality and Safety Risk Assessment of Agro-Products Storage and Preservation of Ministry of Agriculture and Rural Affairs, Zhejiang University, Hangzhou 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Yan Liu
- College of Biosystems Engineering and Food Science, Key Laboratory for Quality Evaluation and Health Benefit of Agro-Products of Ministry of Agriculture and Rural Affairs, Key Laboratory for Quality and Safety Risk Assessment of Agro-Products Storage and Preservation of Ministry of Agriculture and Rural Affairs, Zhejiang University, Hangzhou 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Cheng Chen
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Baiyi Lu
- College of Biosystems Engineering and Food Science, Key Laboratory for Quality Evaluation and Health Benefit of Agro-Products of Ministry of Agriculture and Rural Affairs, Key Laboratory for Quality and Safety Risk Assessment of Agro-Products Storage and Preservation of Ministry of Agriculture and Rural Affairs, Zhejiang University, Hangzhou 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
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Bai J, Sun X, Geng B, Ma X. Interaction mechanism of Cu +/Cu 2+ on bovine serum albumin: Vitro simulation experiments by spectroscopic methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 293:122491. [PMID: 36801739 DOI: 10.1016/j.saa.2023.122491] [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: 12/07/2022] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
Copper (Cu) is an essential trace element for organisms, while excessive concentration of Cu is toxic. In order to assess the toxicity risk of copper in different valences, FTIR, fluorescence, and UV-vis absorption techniques were conducted to study the interactions between either Cu+ or Cu2+ and bovine serum albumin (BSA) under vitro simulated physiological condition. The spectroscopic analysis demonstrated that the intrinsic fluorescence emitted by BSA could be quenched by Cu+/Cu2+ via static quenching with binding sites 0.88 and 1.12 for Cu+ and Cu2+, respectively. On the other hand, the constants of Cu+ and Cu2+ are 1.14 × 103 L/mol and 2.08 × 104 L/mol respectively. ΔH is negative whereas ΔS is positive, showing that the interaction between BSA and Cu+/Cu2+ was mainly driven by electrostatic force. In accordance with Föster's energy transfer theory, the binding distance r showed that the transition of energy from BSA to Cu+/Cu2+ is highly likely to happen. BSA conformation analyses indicated that the interactions between Cu+/Cu2+ and BSA could alter the secondary structure of proteins. Current study provides more information of the interaction between Cu+/Cu2+ and BSA, and reveals the potential toxicological effect of different speciation of copper at molecular level.
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Affiliation(s)
- Jie Bai
- College of Environmental Science, Liaoning University, Shenyang, 110036, China
| | - Xuekai Sun
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Bing Geng
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Xiping Ma
- College of Environmental Science, Liaoning University, Shenyang, 110036, China.
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Adeleke AA, Islam MS, Omondi B. Silver(I) pyridinyl complexes with benzothiazole, thiophene, and furan moieties: DNA/protein-binding, antibacterial, antioxidant, and anticancer studies. Arch Pharm (Weinheim) 2023; 356:e2200308. [PMID: 36253106 DOI: 10.1002/ardp.202200308] [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: 06/15/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 01/04/2023]
Abstract
We have synthesized and characterized nine Ag(I) complexes of Schiff bases containing thiophene, furan, and pyridine moieties for in vitro antibacterial, antioxidant, anticancer activities, and DNA/bovine serum albumin (BSA) binding studies. Based on the analytical and spectral analyses, a linear geometry was proposed for all the Ag(I) complexes, except for one (with the furan moiety), which formed a distorted T-shaped geometry. UV-vis absorption studies on the interactions of calf thymus-DNA (CT-DNA) with the nine Ag(I) complexes pointed to an intercalative binding mode. With a binding constant Kb of 3.75 × 105 M-1 , the complex bearing a benzothiazole moiety (1) interacted stronger with CT-DNA than the rest of the complexes. Fluorescence spectroscopic data revealed that the complexes had a modest binding affinity for BSA through static quenching. The complexes displayed good antioxidant properties, especially those with a benzothiazole moiety. Notable antibacterial activities against methicillin-resistant Staphylococcus aureus, Staphylococcus aureus, Salmonella typhimurium, Pseudomonas aeruginosa, Escherichia coli, and Klebsiella pneumoniae were observed for complexes with the furan and thiophene moieties. The in vitro anticancer studies of selected complexes against three cancer cell lines showed that the complexes were more effective against the inhibition of the growth of cervical cancer cells relative to cisplatin.
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Affiliation(s)
- Adesola A Adeleke
- School of Chemistry and Physics, University of Kwazulu-Natal, Westville, South Africa.,Department of Chemical Sciences, Olabisi Onabanjo University, Ago-Iwoye, Nigeria
| | - Md Shahidul Islam
- Discipline of Biochemistry, School of Life Sciences, University of Kwazulu-Natal, Durban, South Africa
| | - Bernard Omondi
- School of Chemistry and Physics, University of Kwazulu-Natal, Westville, South Africa
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Barghash S, El-Razeq SA, Elmansi H, Elmorsy MA, Belal F. Intermolecular Interactions of Saxagliptin and Vildagliptin with Human Serum Albumin. JOURNAL OF APPLIED SPECTROSCOPY 2022; 88:1266-1275. [DOI: 10.1007/s10812-022-01308-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Wu J, Qi Y, Liu Z, Jia H, Hu Y, Feng F. Investigation on the Interaction of Dy(Ш)/Rutin Complexes with Bovine Serum Albumin by Spectroscopic Methods. J SOLUTION CHEM 2021. [DOI: 10.1007/s10953-021-01128-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yanti S, Wu ZW, Agrawal DC, Chien WJ. Interaction between phloretin and insulin: a spectroscopic study. J Anal Sci Technol 2021. [DOI: 10.1186/s40543-021-00284-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
AbstractDiabetes is among the top ten deadly diseases in the world. It occurs either when the pancreas does not produce enough insulin (INS) or when the body cannot effectively use the insulin it produces. Phloretin (PHL) has a biological effect that can treat diabetes. A spectroscopic study was carried out to explore the interaction between phloretin and insulin. UV/Vis spectroscopy, fluorescence spectroscopy, and circular dichroism spectropolarimeter were used in the study. UV/Vis spectra showed that the interaction between PHL and INS produced strong absorption at a wavelength of 282 nm. The fluorescence analysis results showed that the excitation and emission occurred at 280-nm and 305-nm wavelengths, respectively. Temperature changes did not affect INS emissions. However, the interaction of PHL–INS caused a redshift at 305 to 317 nm. Temperature affected the binding constant (Ka) and the binding site (n). Ka decreased with increasing temperature and increased the binding site. The thermodynamic parameters such as enthalpy (ΔH0) and entropy (ΔS0) each had a value of − 16,514 kJ/mol and 22.65 J/mol·K. PHL and INS interaction formed hydrogen bonds and hydrophobic interaction. The free energy (ΔG0) recorded was negative. PHL and INS interactions took place spontaneously. The quenching effect was dynamic and static. KD values were greater than KS. The higher the temperature, the less was KD and KS. The appearance of two negative signals on circular dichroism (CD) spectropolarimeter implies that phloretin could induce regional configuration changes in insulin. The addition of PHL has revealed that the proportion of α-helix in the insulin stabilizes its structure. Phloretin’s stabilization and enhancement of the α-helix structural configuration in insulin indicate that phloretin can improve insulin resistance.
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Molecular modeling prediction of albumin-based nanoparticles and experimental preparation, characterization, and in-vitro release kinetics of prednisolone from the nanoparticles. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zeng HJ, Li QY, Ma J, Yang R, Qu LB. A comparative study on the effects of resveratrol and oxyresveratrol against tyrosinase activity and their inhibitory mechanism. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 251:119405. [PMID: 33450449 DOI: 10.1016/j.saa.2020.119405] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/02/2020] [Accepted: 12/28/2020] [Indexed: 06/12/2023]
Abstract
Resveratrol and oxyresveratrol are two natural polyhydroxy trans-stilbene products. Previous studies have shown that both of them can effectively inhibit the activity of tyrosinase. However, little attention has been paid to study the difference of their inhibitory mechanism. To reveal this difference, in this work a comparative study on the inhibitory effects of resveratrol and oxyresveratrol against cellular tyrosinase activity and melanin content were investigated by B16F0 cells, and the inhibitory mechanism of them on tyrosinase was revealed by cell-free tyrosinase inhibition, intrinsic fluorescence spectrum, circular dichroism and molecular docking. The results showed that the inhibitory capacity of oxyresveratrol toward tyrosinase activity and melanin formation was better than that of resveratrol. The difference of their inhibitory mechanism may be closely related to the different types of inhibition, the different strength of their interaction with tyrosinase and the different number of hydrogen bonds between them. The data in this study provide a scientific basis for revealing the inhibitory mechanisms of resveratrol and oxyresveratrol toward tyrosinase, and lay an experimental foundation for further development and utilization of them.
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Affiliation(s)
- Hua-Jin Zeng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Qiong-Yang Li
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Jiao Ma
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ran Yang
- College of Chemistry, Green Catalysis Center, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, Zhengzhou University, Zhengzhou 450001, PR China.
| | - Ling-Bo Qu
- College of Chemistry, Green Catalysis Center, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, Zhengzhou University, Zhengzhou 450001, PR China
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Ašanin DP, Skaro Bogojevic S, Perdih F, Andrejević TP, Milivojevic D, Aleksic I, Nikodinovic-Runic J, Glišić BĐ, Turel I, Djuran MI. Structural Characterization, Antimicrobial Activity and BSA/DNA Binding Affinity of New Silver(I) Complexes with Thianthrene and 1,8-Naphthyridine. Molecules 2021; 26:1871. [PMID: 33810316 PMCID: PMC8037121 DOI: 10.3390/molecules26071871] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/23/2021] [Accepted: 03/23/2021] [Indexed: 11/16/2022] Open
Abstract
Three new silver(I) complexes [Ag(NO3)(tia)(H2O)]n (Ag1), [Ag(CF3SO3)(1,8-naph)]n (Ag2) and [Ag2(1,8-naph)2(H2O)1.2](PF6)2 (Ag3), where tia is thianthrene and 1,8-naph is 1,8-naphthyridine, were synthesized and structurally characterized by different spectroscopic and electrochemical methods and their crystal structures were determined by single-crystal X-ray diffraction analysis. Their antimicrobial potential was evaluated against four bacterial and three Candida species, and the obtained results revealed that these complexes showed significant activity toward the Gram-positive Staphylococcus aureus, Gram-negative Pseudomonas aeruginosa and the investigated Candida species with minimal inhibitory concentration (MIC) values in the range 1.56-7.81 μg/mL. On the other hand, tia and 1,8-naph ligands were not active against the investigated strains, suggesting that their complexation with Ag(I) ion results in the formation of antimicrobial compounds. Moreover, low toxicity of the complexes was detected by in vivo model Caenorhabditis elegans. The interaction of the complexes with calf thymus DNA (ct-DNA) and bovine serum albumin (BSA) was studied to evaluate their binding affinity towards these biomolecules for possible insights into the mode of antimicrobial activity. The binding affinity of Ag1-3 to BSA was higher than that for DNA, indicating that proteins could be more favorable binding sites for these complexes in comparison to the nucleic acids.
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Affiliation(s)
- Darko P. Ašanin
- Department of Science, Institute for Information Technologies Kragujevac, University of Kragujevac, Jovana Cvijića bb, 34000 Kragujevac, Serbia;
| | - Sanja Skaro Bogojevic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia; (S.S.B.); (D.M.); (I.A.)
| | - Franc Perdih
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia;
| | - Tina P. Andrejević
- Department of Chemistry, Faculty of Science, University of Kragujevac, R. Domanovića 12, 34000 Kragujevac, Serbia;
| | - Dusan Milivojevic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia; (S.S.B.); (D.M.); (I.A.)
| | - Ivana Aleksic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia; (S.S.B.); (D.M.); (I.A.)
| | - Jasmina Nikodinovic-Runic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia; (S.S.B.); (D.M.); (I.A.)
| | - Biljana Đ. Glišić
- Department of Chemistry, Faculty of Science, University of Kragujevac, R. Domanovića 12, 34000 Kragujevac, Serbia;
| | - Iztok Turel
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia;
| | - Miloš I. Djuran
- Serbian Academy of Sciences and Arts, Knez Mihailova 35, 11000 Belgrade, Serbia
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Macii F, Biver T. Spectrofluorimetric analysis of the binding of a target molecule to serum albumin: tricky aspects and tips. J Inorg Biochem 2020; 216:111305. [PMID: 33261935 DOI: 10.1016/j.jinorgbio.2020.111305] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 10/21/2020] [Accepted: 11/07/2020] [Indexed: 12/18/2022]
Abstract
Protein binding heavily modulates drug activity. Therefore, the binding features need to be elucidated when chemistry researchers study new molecules (metal complexes) to be used as drugs. This paper concerns the experimental and data treatment aspects of the mechanistic analysis of the binding to a fluorescent protein (the golden standard serum albumin) by using direct fluorescence titrations. Fluorescence data are not rarely only qualitatively used, neglecting further treatments which could offer a precious detailed picture of the behavior of the drug. We aim to spread a mechanistic approach, discussing the critical aspects for correctly designing the experiments and treating the data. The researcher may confirm adduct formation and evaluate binding constants (Stern-Volmer KSV or other types of K). Also, we discuss here, with the help of literature examples, the correct use of temperature dependence of K to extract thermodynamic parameters, comment on enthalpy-entropy compensation, together with the use of synchronous spectra and exchange experiments to gain information on the binding type and site. We think that this tutorial/critical synopsis can be of help for the increasing community dealing with these experiments, which are valuable but often much more tricky than it might appear at first sight.
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Affiliation(s)
- Francesca Macii
- Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa, Italy
| | - Tarita Biver
- Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa, Italy; Department of Pharmacy, University of Pisa, Pisa, Italy.
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Zeng HJ, Sun DQ, Chu SH, Zhang JJ, Hu GZ, Yang R. Inhibitory effects of four anthraquinones on tyrosinase activity: Insight from spectroscopic analysis and molecular docking. Int J Biol Macromol 2020; 160:153-163. [DOI: 10.1016/j.ijbiomac.2020.05.193] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/21/2020] [Accepted: 05/22/2020] [Indexed: 11/29/2022]
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12
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Kovalska V, Vakarov S, Chornenka N, Gumienna-Kontecka E, Voloshin Y. Sensing of a Protein’s Structure Using the Induced Circular Dichroism Spectra by the Monocarboxyphenylsulfide Iron(II) Clathrochelates as Optical Reporters. RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023620100137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Bai J, Ma X, Sun X. Investigation on the interaction of food colorant Sudan III with bovine serum albumin using spectroscopic and molecular docking methods. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2020; 55:669-676. [PMID: 32073347 DOI: 10.1080/10934529.2020.1729616] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/03/2020] [Accepted: 02/07/2020] [Indexed: 06/10/2023]
Abstract
Sudan III is a coloring agent used in chemical industries and food additives. This article uses spectroscopic and molecular docking methods to investigate the interaction of Sudan III with bovine serum albumin (BSA) under a physiological condition. Spectroscopic analysis of the emission quenching revealed that the quenching mechanism of BSA by Sudan III was static. The binding sites and constants of Sudan III-BSA complex were observed to be from 0.72 and 6.41 × 102 L·mol-1 to 0.69 and 5.83 × 102 L·mol-1 at 298 and 310 K, respectively. The enthalpy change (ΔH) and entropy change (ΔS) revealed that van der Waals forces and hydrogen bonds stabilized the Sudan III-BSA complex. Energy transfer from tryptophan to Sudan III occurred by a fluorescence resonance energy transfer mechanism, and the r distance (3.32 nm) had been determined. The results of UV-Vis absorption, synchronous, three-dimensional fluorescence, and circular dichroism spectra showed that Sudan III induced conformational changes of BSA. Molecular docking studies revealed that Sudan III situated within subdomain IIA of BSA. A study on the interaction between Sudan III and BSA was of fundamental importance for providing more information about the potential toxicological effect of chemicals at the molecular level.
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Affiliation(s)
- Jie Bai
- College of Environmental Science, Liaoning University, Shenyang, P.R. China
| | - Xiping Ma
- College of Environmental Science, Liaoning University, Shenyang, P.R. China
| | - Xuekai Sun
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China
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14
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Xu L, Liu Z, Liao T, Tuo X. Probing the interaction between levamlodipine and hemoglobin based on spectroscopic and molecular docking methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 223:117306. [PMID: 31255862 DOI: 10.1016/j.saa.2019.117306] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 06/16/2019] [Accepted: 06/21/2019] [Indexed: 06/09/2023]
Abstract
In recent years, levamlodipine (LAML) has been widely used as a common drug for the treatment of hypertension. However, no reports exist that focus on the binding process of LAML with the transport proteins present in blood circulation. Here, several spectroscopy techniques, molecular docking and a molecular dynamics simulation were employed to comprehensively analyze the mechanism underlying the interaction between bovine hemoglobin (BHb) and LAML, as well as the effect of other drugs on the BHb-LAML system. The results indicated that a stable BHb-LAML complex was formed and that the binding site for LAML was located at β-37 tryptophan in the central cavity of BHb. Van der Waals force and hydrogen bonds played major roles in this binding process, and the number of binding sites (n) in the binary system was approximately equal to 1. Multiple spectroscopy experiments (FT-IR and three-dimensional fluorescence spectrometry) and a dynamics simulation revealed that LAML could induce a conformational in BHb and that the microenvironment of Trp/Tyr changed. Interestingly, the values of the binding constant between LAML and BHb significantly increased due to the effect of rofecoxib, propranolol and enalapril. Meanwhile, these drugs did not produce synergistic or negative synergistic effects on the LAML binding with BHb. These results provide new insight into the transport mechanisms for LAML in the human body.
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Affiliation(s)
- Linlin Xu
- School of Pharmacy, Nanchang University, Nanchang 330031, Jiangxi, China
| | - Zhaoqing Liu
- College of Chemistry, Nanchang University, Nanchang 330031, Jiangxi, China
| | - Tancong Liao
- School of Life Sciences, Nanchang University, Nanchang 330031, Jiangxi, China
| | - Xun Tuo
- College of Chemistry, Nanchang University, Nanchang 330031, Jiangxi, China.
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15
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Liu C, Zhang Y, Guo J, Cui F. Probing the Binding of Bicyclol and Human Serum Albumin by Multispectral Technologies and Molecular Docking Method. J SOLUTION CHEM 2019. [DOI: 10.1007/s10953-019-00927-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Zeng HJ, Liu Z, Hu GZ, Qu LB, Yang R. Investigation on the binding of aloe-emodin with tyrosinase by spectral analysis and molecular docking. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 211:79-85. [PMID: 30521996 DOI: 10.1016/j.saa.2018.11.045] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 10/15/2018] [Accepted: 11/17/2018] [Indexed: 06/09/2023]
Abstract
In this paper, the inhibitory kinetics of aloe-emodin on the activity of tyrosinase and the inhibitory mechanism have been investigated by using spectroscopic and molecular docking techniques. The results showed that aloe-emodin inhibited tyrosinase activity in a competitive manner. The binding constants, number of binding sites and thermodynamic parameters obtained at different temperature suggested that aloe-emodin spontaneously binds to tyrosinase at one binding site, mainly via electrostatic forces. Analysis by UV-vis absorption (UV), circular dichroism (CD) and molecular docking indicated that aloe-emodin bound directly into the catalytic cavity and that binding of aloe-emodin to tyrosinase induced conformational changes of the enzyme and blocked the catalytic center of the enzyme preventing binding of the substrate, which caused the inhibition of the tyrosinase activity.
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Affiliation(s)
- Hua-Jin Zeng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Zhe Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Gui-Zhou Hu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ling-Bo Qu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ran Yang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
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17
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Liang GW, Chen YC, Wang Y, Wang HM, Pan XY, Chen PH, Niu QX. Interaction between Saikosaponin D, Paeoniflorin, and Human Serum Albumin. Molecules 2018; 23:molecules23020249. [PMID: 29382045 PMCID: PMC6017552 DOI: 10.3390/molecules23020249] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 01/19/2018] [Accepted: 01/22/2018] [Indexed: 02/05/2023] Open
Abstract
Saikosaponin D (SSD) and paeoniflorin (PF) are the major active constituents of Bupleuri Radix and Paeonia lactiflora Pall, respectively, and have been widely used in China to treat liver and other diseases for many centuries. We explored the binding of SSD/PF to human serum albumin (HSA) by using fluorospectrophotometry, circular dichroism (CD) and molecular docking. Both SSD and PF produced a conformational change in HSA. Fluorescence quenching was accompanied by a blue shift in the fluorescence spectra. Co-binding of PF and SSD also induced quenching and a conformational change in HSA. The Stern-Volmer equation showed that quenching was dominated by static quenching. The binding constant for ternary interaction was below that for binary interaction. Site-competitive experiments demonstrated that SSD/PF bound to site I (subdomain IIA) and site II (subdomain IIIA) in HSA. Analysis of thermodynamic parameters indicated that hydrogen bonding and van der Waals forces were mostly responsible for the binary association. Also, there was energy transfer upon binary interaction. Molecular docking supported the experimental findings in conformation, binding sites and binding forces.
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Affiliation(s)
- Guo-Wu Liang
- Department of Pathophysiology, Key Immunopharmacology Laboratory, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
| | - Yi-Cun Chen
- Department of Pharmacology, Traditional Chinese Medicine Laboratory, Shantou University Medical College, Guangdong 515041, China.
| | - Yi Wang
- Department of Pathophysiology, Key Immunopharmacology Laboratory, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
| | - Hong-Mei Wang
- Department of Pathophysiology, Key Immunopharmacology Laboratory, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
| | - Xiang-Yu Pan
- Department of Pathophysiology, Key Immunopharmacology Laboratory, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
| | - Pei-Hong Chen
- Department of Pharmacology, Traditional Chinese Medicine Laboratory, Shantou University Medical College, Guangdong 515041, China.
| | - Qing-Xia Niu
- Department of Pathophysiology, Key Immunopharmacology Laboratory, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
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Wani TA, AlRabiah H, Bakheit AH, Kalam MA, Zargar S. Study of binding interaction of rivaroxaban with bovine serum albumin using multi-spectroscopic and molecular docking approach. Chem Cent J 2017; 11:134. [PMID: 29260434 PMCID: PMC5736510 DOI: 10.1186/s13065-017-0366-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 12/14/2017] [Indexed: 01/20/2023] Open
Abstract
Background Rivaroxaban is a direct inhibitor of coagulation factor Xa and is used for venous thromboembolic disorders. The rivaroxaban interaction with BSA was studied to understand its PK and PD (pharmacokinetics and pharmacokinetics) properties. Multi-spectroscopic studies were used to study the interaction which included UV spectrophotometric, spectrofluorometric and three dimensional spectrofluorometric studies. Further elucidation of data was done by molecular simulation studies to evaluate the interaction behavior between BSA and rivaroxaban. Results Rivaroxaban quenched the basic fluorescence of BSA molecule by the process of static quenching since rivaroxaban and BSA form a complex that results in shift of the absorption spectra of BSA molecule. A decline in the values of binding constants was detected with the increase of temperatures (298–308 K) and the binding constants were in range from 1.32 × 105 to 4.3 × 103 L mol−1 indicating the instability of the BSA and rivaroxaban complex at higher temperatures. The data of number of binding sites showed uniformity. The site marker experiments indicated site I (sub-domain IIA) as the principal site for rivaroxaban binding. The thermodynamic study experiments were carried at the temperatures of 298/303/308 K. The ∆G0, ∆H0 and ∆S0 at these temperatures ranged between − 24.67 and − 21.27 kJ mol−1 and the values for ∆H0 and ∆S0 were found to be − 126 kJ mol−1 and ∆S − 340 J mol−1 K−1 The negative value of ∆G0 indicating spontaneous binding between the two molecules. The negative values in ∆H0 and ∆S0 indicated van der Waals interaction and hydrogen bonding were involved during the interaction between rivaroxaban and BSA. Conclusions The results of molecular docking were consistent with the results obtained from spectroscopic studies in establishing the principal binding site and type of bonds between rivaroxaban and BSA.
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Affiliation(s)
- Tanveer A Wani
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh, 11451, Saudi Arabia.
| | - Haitham AlRabiah
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh, 11451, Saudi Arabia
| | - Ahmed H Bakheit
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh, 11451, Saudi Arabia
| | - Mohd Abul Kalam
- Nanomedicine Research Unit, Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh, 11451, Saudi Arabia
| | - Seema Zargar
- Department of Biochemistry, College of Science, King Saud University, PO Box 22452, Riyadh, 11451, Saudi Arabia
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Influence of antidepressant clomipramine hydrochloride drug on human serum albumin: Spectroscopic study. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.05.143] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Khoder M, Abdelkader H, ElShaer A, Karam A, Najlah M, Alany RG. The use of albumin solid dispersion to enhance the solubility of unionizable drugs. Pharm Dev Technol 2017; 23:732-738. [PMID: 28771055 DOI: 10.1080/10837450.2017.1364267] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
In this study, solid dispersions of prednisolone (PRD) and bovine serum albumin (BSA) were prepared by spray drying and freeze drying methods using a PRD:BSA solution [20:1 molar ratio (MR)]. PRD-BSA dispersed mixtures were characterized by scanning electron microscopy (SEM), and powder X-ray diffraction (XRD), and differential scanning calorimetry (DSC). PRD-BSA physical and dispersed mixtures showed significantly higher solubility in water than that of unprocessed drug. Enhancement factor of six was obtained in both physical mixture and solid dispersion solubility studies. In-vitro dissolution and release studies under physiological conditions showed an immediate release of PRD from the solid dispersions, with almost 90% of the drug dissolved in the first 10 min. PRD was immediately released from BSA binding complex. This study demonstrates the potential for the use of BSA to enhance the solubility and dissolution rate, hence bioavailability, of the unionizable drugs.
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Affiliation(s)
- Mouhamad Khoder
- a Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry , Kingston University London , Kingston Upon Thames , UK
| | - Hamdy Abdelkader
- b Department of Pharmaceutics, Faculty of Pharmacy , Minia University , Minia , Egypt
| | - Amr ElShaer
- a Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry , Kingston University London , Kingston Upon Thames , UK
| | - Ayman Karam
- c Institute of Chemistry of Poitiers: Materials and Natural Resources , Catalysis and Unconventional Media's Team University of Poitiers , France
| | - Mohammad Najlah
- d Faculty of Medical Science , Anglia Ruskin University, Bishops Hall Lane , Chelmsford , UK
| | - Raid G Alany
- a Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry , Kingston University London , Kingston Upon Thames , UK.,e School of Pharmacy , The University of Auckland , Auckland , New Zealand
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Plotnikova OA, Mel’nikov AG, Mel’nikov GV, Kovalenko AV. Luminescencence determination of ecotoxicants in protein-based media. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2017. [DOI: 10.1134/s1990793117040212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Spectrophotometric and molecular modelling studies on in vitro interaction of tyrosine kinase inhibitor linifanib with bovine serum albumin. PLoS One 2017; 12:e0176015. [PMID: 28419132 PMCID: PMC5395234 DOI: 10.1371/journal.pone.0176015] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 04/04/2017] [Indexed: 12/15/2022] Open
Abstract
Linifanib (LNF) possess antitumor activity and acts by inhibiting receptor tyrosine kinase VEGF and PDGF. The interaction of BSA with the drug can provide valuable information regarding the pharmacokinetic and pharmacodynamics behavior of drug. In our study the spectrophotometric methods and molecular docking studies were executed to understand the interaction behavior of BSA and LNF. BSA has an intrinsic fluorescence and that fluorescence was quenched by LNF. This quenching process was studied at three different temperatures of 288, 300and 308 K. The interaction between LNF and BSA was due to static quenching because the Ksv (Stern-Volmer constant) at 288 K was higher than at 300 and 308 K. Kq (quenching rate constant) behaved in a similar fashion as the Ksv. Several other parameters like binding constants, number of binding sites and binding energy in addition to molecular docking studies were also used to evaluate the interaction process. A decrease in the binding constants was observed with increasing temperatures and the binding site number approximated unity. The decreasing binding constant indicates LNF–BSA complex stability. The site mark competition experiment confirmed the binding site for LNF was located on site II of BSA. UV–visible studies along with synchronous fluorescence confirm a small change in the conformation of BSA upon interaction with LNF. The thermodynamic analysis provided the values for free energy ΔG0, ΔH0 and ΔS0. The ΔG0 at the 288, 300 and 308 K ranged in between -21.5 to -23.3 kJ mol-1, whereas the calculated values of ΔH (-55.91 kJ mol-1) and ΔS0 (-111.74 J mol-1·K-1). The experimental and molecular docking results suggest that the interaction between LNF and BSA was spontaneous and they exhibited hydrogen bonding and van der Waals force between them.
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Tang B, Huang Y, Ma X, Liao X, Wang Q, Xiong X, Li H. Multispectroscopic and docking studies on the binding of chlorogenic acid isomers to human serum albumin: Effects of esteryl position on affinity. Food Chem 2016; 212:434-42. [DOI: 10.1016/j.foodchem.2016.06.007] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 06/02/2016] [Accepted: 06/04/2016] [Indexed: 12/21/2022]
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Characterizing the binding interaction between antimalarial artemether (AMT) and bovine serum albumin (BSA): Spectroscopic and molecular docking methods. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 162:14-23. [DOI: 10.1016/j.jphotobiol.2016.06.025] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Revised: 06/13/2016] [Accepted: 06/13/2016] [Indexed: 11/17/2022]
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25
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Combined spectroscopies and molecular docking approach to characterizing the binding interaction of enalapril with bovine serum albumin. LUMINESCENCE 2016; 32:481-490. [DOI: 10.1002/bio.3202] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 07/18/2016] [Accepted: 07/21/2016] [Indexed: 11/07/2022]
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26
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Shi JH, Pan DQ, Jiang M, Liu TT, Wang Q. In vitro study on binding interaction of quinapril with bovine serum albumin (BSA) using multi-spectroscopic and molecular docking methods. J Biomol Struct Dyn 2016; 35:2211-2223. [DOI: 10.1080/07391102.2016.1213663] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Jie-hua Shi
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China
| | - Dong-qi Pan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Min Jiang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Ting-Ting Liu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Qi Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
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Shi JH, Wang Q, Pan DQ, Liu TT, Jiang M. Characterization of interactions of simvastatin, pravastatin, fluvastatin, and pitavastatin with bovine serum albumin: multiple spectroscopic and molecular docking. J Biomol Struct Dyn 2016; 35:1529-1546. [PMID: 27484332 DOI: 10.1080/07391102.2016.1188416] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The binding interactions of simvastatin (SIM), pravastatin (PRA), fluvastatin (FLU), and pitavastatin (PIT) with bovine serum albumin (BSA) were investigated for determining the affinity of four statins with BSA through multiple spectroscopic and molecular docking methods. The experimental results showed that SIM, PRA, FLU, and PIT statins quenched the intrinsic fluorescence of BSA through a static quenching process and the stable stains-BSA complexes with the binding constants in the order of 104 M-1 at 298 K were formed through intermolecular nonbond interaction. The values of ΔH0, ΔS0 and ΔG0 in the binding process of SIM, PRA, FLU, and PIT with BSA were negative at the studied temperature range, suggesting that the binding process of four statins and BSA was spontaneous and the main interaction forces were van der Waals force and hydrogen-bonding interactions. Moreover, the binding of four statins with BSA was enthalpy-driven process due to |ΔH°|>|TΔS°| under the studied temperature range. From the results of site marker competitive experiments and molecular docking, subdomain IIIA (site II) was the primary binding site for SIM, PRA, FLU, and PIT on BSA. The results of UV-vis absorption, synchronous fluorescence, 3D fluorescence and FT-IR spectra proved that the slight change in the conformation of BSA, while the significant changes in the conformation of SIM, PRA, FLU, and PIT drug in statin-BSA complexes, indicating that the flexibility of statin molecules plays an important role in increasing the stability of statin-BSA complexes.
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Affiliation(s)
- Jie-Hua Shi
- a College of Pharmaceutical Science , Zhejiang University of Technology , Hangzhou 310014 , China.,b State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Qi Wang
- a College of Pharmaceutical Science , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Dong-Qi Pan
- a College of Pharmaceutical Science , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Ting-Ting Liu
- a College of Pharmaceutical Science , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Min Jiang
- a College of Pharmaceutical Science , Zhejiang University of Technology , Hangzhou 310014 , China
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Bag SS, Jana S, Pradhan MK. Synthesis, photophysical properties of triazolyl-donor/acceptor chromophores decorated unnatural amino acids: Incorporation of a pair into Leu-enkephalin peptide and application of triazolylperylene amino acid in sensing BSA. Bioorg Med Chem 2016; 24:3579-95. [DOI: 10.1016/j.bmc.2016.05.069] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 05/29/2016] [Accepted: 05/30/2016] [Indexed: 02/03/2023]
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Zeng HJ, Wang YP, Yang R, You J, Qu LB. Inhibitory effects of daidzein and genistein on trypsin: Insights from spectroscopic and molecular docking studies. Int J Biol Macromol 2016; 89:336-43. [DOI: 10.1016/j.ijbiomac.2016.04.052] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 04/17/2016] [Accepted: 04/18/2016] [Indexed: 12/22/2022]
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Zeng HJ, Yang D, Hu GZ, Yang R, Qu LB. Studies on the binding of pepsin with three pyrethroid insecticides by multi-spectroscopic approaches and molecular docking. J Mol Recognit 2016; 29:476-84. [PMID: 27135781 DOI: 10.1002/jmr.2547] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 03/17/2016] [Accepted: 04/06/2016] [Indexed: 11/08/2022]
Abstract
In this study, the molecular interactions between pepsin and three pyrethroid insecticides, including fenvalerate, cyhalothrin and deltamethrin, were investigated by multi-spectroscopic and molecular docking methods under mimic physiological pH conditions. The results indicated that all of these insecticides could interact with pepsin to form insecticide-pepsin complexes. The binding constants, number of binding sites and thermodynamic parameters measured at different temperatures indicated that these three pyrethroid insecticides could spontaneously bind with pepsin mainly through electrostatic forces and hydrophobic interactions with one binding site. According to the theory of Föster's non-radioactive energy transfer, the distance (r) between pepsin and three pyrethroid insecticides were all found to be less than 7 nm, which implied that the energy transfer occurred between pepsin and these insecticides, leading to the quenching of pepsin fluorescence. Synchronous and three-dimensional fluorescence, CD spectra and molecular docking results indicated that all tested pyrethroid insecticides bound directly into the enzyme cavity site and the binding of insecticides into the cavity influenced the microenvironment of the pepsin activity site which resulted in the extension of peptide strands of pepsin with loss of α-helix structures.Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Hua-Jin Zeng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Dan Yang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Gui-Zhou Hu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Ran Yang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, PR China.
| | - Ling-Bo Qu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, PR China
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31
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Wang Q, Huang CR, Jiang M, Zhu YY, Wang J, Chen J, Shi JH. Binding interaction of atorvastatin with bovine serum albumin: Spectroscopic methods and molecular docking. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 156:155-63. [PMID: 26688207 DOI: 10.1016/j.saa.2015.12.003] [Citation(s) in RCA: 193] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 11/26/2015] [Accepted: 12/02/2015] [Indexed: 05/19/2023]
Abstract
The interaction of atorvastatin with bovine serum albumin (BSA) was investigated using multi-spectroscopic methods and molecular docking technique for providing important insight into further elucidating the store and transport process of atorvastatin in the body and the mechanism of action and pharmacokinetics. The experimental results revealed that the fluorescence quenching mechanism of BSA induced atorvastatin was a combined dynamic and static quenching. The binding constant and number of binding site of atorvastatin with BSA under simulated physiological conditions (pH=7.4) were 1.41 × 10(5) M(-1) and about 1 at 310K, respectively. The values of the enthalpic change (ΔH(0)), entropic change (ΔS(0)) and Gibbs free energy (ΔG(0)) in the binding process of atorvastatin with BSA at 310K were negative, suggesting that the binding process of atorvastatin and BSA was spontaneous and the main interaction forces were van der Waals force and hydrogen bonding interaction. Moreover, atorvastatin was bound into the subdomain IIA (site I) of BSA, resulting in a slight change of the conformation of BSA.
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Affiliation(s)
- Qi Wang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310032, China
| | - Chuan-ren Huang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310032, China
| | - Min Jiang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310032, China
| | - Ying-yao Zhu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jing Wang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jun Chen
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jie-hua Shi
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310032, China; State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China.
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Fang F, Pan DQ, Qiu MJ, Liu TT, Jiang M, Wang Q, Shi JH. Probing into the binding interaction between medroxyprogesterone acetate and bovine serum albumin (BSA): spectroscopic and molecular docking methods. LUMINESCENCE 2016; 31:1242-50. [DOI: 10.1002/bio.3097] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 12/16/2015] [Accepted: 12/21/2015] [Indexed: 12/31/2022]
Affiliation(s)
- Fang Fang
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - Dong-qi Pan
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - Min-jie Qiu
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - Ting-Ting Liu
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - Min Jiang
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - Qi Wang
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - Jie-hua Shi
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology; Zhejiang University of Technology; Hangzhou 310032 China
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33
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Spectral, electrochemical and molecular docking methods to get an understanding of supramolecular chemistry of sulfa drugs to biomolecules. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.10.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Jiang M, Huang CR, Wang Q, Zhu YY, Wang J, Chen J, Shi JH. Combined spectroscopies and molecular docking approach to characterizing the binding interaction between lisinopril and bovine serum albumin. LUMINESCENCE 2015; 31:468-477. [DOI: 10.1002/bio.2984] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 06/26/2015] [Accepted: 06/28/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Min Jiang
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - Chuan-ren Huang
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - Qi Wang
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - Ying-yao Zhu
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - Jing Wang
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - Jun Chen
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - Jie-hua Shi
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology; Zhejiang University of Technology; Hangzhou 310032 China
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Zhu L, Zeng X, Zhang F. Fluorescence resonance energy transfer for investigation of the interaction of Para Red with serum albumins. LUMINESCENCE 2015; 31:328-334. [PMID: 26178918 DOI: 10.1002/bio.2962] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 05/18/2015] [Accepted: 05/26/2015] [Indexed: 01/04/2023]
Abstract
Para Red (PR) has been isolated from food additives, and shown to be toxic to humans. To facilitate examination of its toxicity, the interaction between PR and serum albumins (SA) was studied using fluorescence quenching and circular dichroism (CD) spectrophotometry. The experiments showed that the fluorescence intensity of serum albumins decreased with increasing concentrations of PR, which resulted from the binding of PR and SA. The binding constant, number of binding sites and thermodynamic parameters were calculated and hydrogen bond and van der Waals interactions were shown to play a key role in the binding process. Competition experiments indicated that PR mainly binds to Trp residues of SA within the site I. As the CD and three-dimensional spectra revealed, the addition of PR induced a conformational change in SA.
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Affiliation(s)
- Lin Zhu
- School of Chemical and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, People's Republic of China
| | - Xiaodan Zeng
- Center of Analysis and Measurement, Jilin Institute of Chemical Technology, Jilin, 132022, People's Republic of China
| | - Fusheng Zhang
- Jilin Institute of Chemical Technology, Jilin, 132022, People's Republic of China
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36
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Zeng HJ, Yang R, Liang H, Qu LB. Molecular interactions of flavonoids to pepsin: Insights from spectroscopic and molecular docking studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 151:576-590. [PMID: 26162346 DOI: 10.1016/j.saa.2015.06.059] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 06/17/2015] [Accepted: 06/18/2015] [Indexed: 06/04/2023]
Abstract
In the work described on this paper, the inhibitory effect of 10 flavonoids on pepsin and the interactions between them were investigated by a combination of spectroscopic and molecular docking methods. The results indicated that all flavonoids could bind with pepsin to form flavonoid-pepsin complexes. The binding parameters obtained from the data at different temperatures revealed that flavonoids could spontaneously interact with pepsin mainly through electrostatic forces and hydrophobic interactions with one binding site. According to synchronous and three-dimensional fluorescence spectra and molecular docking results, all flavonoids bound directly into the enzyme cavity site and the binding influenced the microenvironment and conformation of the pepsin activity site which resulted in the reduced enzyme activity. The present study provides direct evidence at a molecular level to understand the mechanism of digestion caused by flavonoids.
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Affiliation(s)
- Hua-Jin Zeng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ran Yang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
| | - Huili Liang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ling-Bo Qu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China; School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, PR China
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37
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Characterization of interaction of calf thymus DNA with gefitinib: Spectroscopic methods and molecular docking. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 147:47-55. [DOI: 10.1016/j.jphotobiol.2015.03.005] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Revised: 03/04/2015] [Accepted: 03/11/2015] [Indexed: 12/18/2022]
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38
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Shi JH, Chen J, Wang J, Zhu YY. Binding interaction between sorafenib and calf thymus DNA: spectroscopic methodology, viscosity measurement and molecular docking. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt B:443-450. [PMID: 25311519 DOI: 10.1016/j.saa.2014.09.056] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 08/27/2014] [Accepted: 09/18/2014] [Indexed: 06/04/2023]
Abstract
The binding interaction of sorafenib with calf thymus DNA (ct-DNA) was studied using UV-vis absorption spectroscopy, fluorescence emission spectroscopy, circular dichroism (CD), viscosity measurement and molecular docking methods. The experimental results revealed that there was obvious binding interaction between sorafenib and ct-DNA. The binding constant (Kb) of sorafenib with ct-DNA was 5.6×10(3) M(-1) at 298 K. The enthalpy and entropy changes (ΔH(0) and ΔS(0)) in the binding process of sorafenib with ct-DNA were -27.66 KJ mol(-1) and -21.02 J mol(-1) K(-1), respectively, indicating that the main binding interaction forces were van der Waals force and hydrogen bonding. The docking results suggested that sorafenib preferred to bind on the minor groove of A-T rich DNA and the binding site of sorafenib was 4 base pairs long. The conformation change of sorafenib in the sorafenib-DNA complex was obviously observed and the change was close relation with the structure of DNA, implying that the flexibility of sorafenib molecule played an important role in the formation of the stable sorafenib-ct-DNA complex.
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Affiliation(s)
- Jie-Hua Shi
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China; State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Jun Chen
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jing Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Ying-Yao Zhu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
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39
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Chen CB, Chen J, Wang J, Zhu YY, Shi JH. Combined spectroscopic and molecular docking approach to probing binding interactions between lovastatin and calf thymus DNA. LUMINESCENCE 2015; 30:1004-10. [DOI: 10.1002/bio.2851] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Revised: 12/03/2014] [Accepted: 12/29/2014] [Indexed: 01/21/2023]
Affiliation(s)
- C.-B. Chen
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - J. Chen
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - J. Wang
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - Y.-Y. Zhu
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
| | - J.-H. Shi
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310032 China
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology; Zhejiang University of Technology; Hangzhou 310032 China
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40
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Ao J, Gao L, Yuan T, Jiang G. Interaction mechanisms between organic UV filters and bovine serum albumin as determined by comprehensive spectroscopy exploration and molecular docking. CHEMOSPHERE 2015; 119:590-600. [PMID: 25128891 DOI: 10.1016/j.chemosphere.2014.07.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 06/13/2014] [Accepted: 07/05/2014] [Indexed: 06/03/2023]
Abstract
Organic UV filters are a group of emerging PPCP (pharmaceuticals and personal care products) contaminants. Current information is insufficient to understand the in vivo processes and health risks of organic UV filters in humans. The interaction mechanism of UV filters with serum albumin provides critical information for the health risk assessment of these active ingredients in sunscreen products. This study investigates the interaction mechanisms of five commonly used UV filters (2-hydroxy-4-methoxybenzophenone, BP-3; 2-ethylhexyl 4-methoxycinnamate, EHMC; 4-methylbenzylidene camphor, 4-MBC; methoxydibenzoylmethane, BDM; homosalate, HMS) with bovine serum albumin (BSA) by spectroscopic measurements of fluorescence, circular dichroism (CD), competitive binding experiments and molecular docking. Our results indicated that the fluorescence of BSA was quenched by these UV filters through a static quenching mechanism. The values of the binding constant (Ka) ranged from (0.78±0.02)×10(3) to (1.29±0.01)×10(5) L mol(-1). Further exploration by synchronous fluorescence and CD showed that the conformation of BSA was demonstrably changed in the presence of these organic UV filters. It was confirmed that the UV filters can disrupt the α-helical stability of BSA. Moreover, the results of molecular docking revealed that the UV filter molecule is located in site II (sub-domain IIIA) of BSA, which was further confirmed by the results of competitive binding experiments. In addition, binding occurred mainly through hydrogen bonding and hydrophobic interaction. This study raises critical concerns regarding the transportation, distribution and toxicity effects of organic UV filters in human body.
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Affiliation(s)
- Junjie Ao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Li Gao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; School of Resource and Environment, Ningxia University, Yinchuan 750021, China
| | - Tao Yuan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Gaofeng Jiang
- School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, Hubei 430065, China
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41
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Shi JH, Chen J, Wang J, Zhu YY, Wang Q. Binding interaction of sorafenib with bovine serum albumin: Spectroscopic methodologies and molecular docking. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 149:630-7. [PMID: 25985127 DOI: 10.1016/j.saa.2015.04.034] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 03/12/2015] [Accepted: 04/16/2015] [Indexed: 05/21/2023]
Abstract
The binding interaction of sorafenib with bovine serum albumin (BSA) was studied using fluorescence, circular dichrosim (CD) and molecular docking methods. The results revealed that there was a static quenching of BSA induced by sorafenib due to the formation of sorafenib-BSA complex. The binding constant and number of binding site of sorafenib with BSA under simulated physiological condition (pH=7.4) were 6.8×10(4) M(-1) and 1 at 310 K, respectively. Base on the sign and magnitude of the enthalpy and entropy changes (ΔH(0)=-72.2 kJ mol(-1) and ΔS(0)=-140.4J mol(-1) K(-1)) and the results of molecular docking, it could be suggested that the binding process of sorafenib and BSA was spontaneous and the main interaction forces of sorafenib with BSA were van der Waals force and hydrogen bonding interaction. From the results of site marker competitive experiments and molecular docking, it could be deduced that sorafenib was inserted into the subdomain IIA (site I) of BSA and leads to a slight change of the conformation of BSA. And, the significant change of conformation of sorafenib occurred in the binding process with BSA to increase the stability of the sorafenib-BSA system, implying that the flexibility of sorafenib played an important role in the binding process.
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Affiliation(s)
- Jie-Hua Shi
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China; State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Jun Chen
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jing Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Ying-Yao Zhu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Qi Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
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42
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Morphological analysis and interaction of chlorophyll and BSA. BIOMED RESEARCH INTERNATIONAL 2014; 2014:872701. [PMID: 24963490 PMCID: PMC4052157 DOI: 10.1155/2014/872701] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 04/21/2014] [Accepted: 04/21/2014] [Indexed: 12/04/2022]
Abstract
Interactions between proteins and drugs, which can lead to formation of stable drug-protein complexes, have important implications on several processes related to human health. These interactions can affect, for instance, free concentration, biological activity, and metabolism of the drugs in the blood stream. Here, we report on the UV-Visible spectroscopic investigation on the interaction of bovine serum albumin (BSA) with chlorophyll (Chl) in aqueous solution under physiological conditions. Binding constants at different temperatures—obtained by using the Benesi-Hildebrand equation—were found to be of the same order of magnitude (~104 M−1) indicating low affinity of Chl with BSA. We have found a hyperchromism, which suggested an interaction between BSA and Chl occurring through conformational changes of BSA caused by exposition of tryptophan to solvent. Films from BSA and Chl obtained at different Chl concentrations showed fractal structures, which were characterized by fractal dimension calculated from microscopic image analysis.
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43
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Zeng HJ, You J, Liang HL, Qi T, Yang R, Qu LB. Investigation on the binding interaction between silybin and pepsin by spectral and molecular docking. Int J Biol Macromol 2014; 67:105-11. [DOI: 10.1016/j.ijbiomac.2014.02.051] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 02/25/2014] [Accepted: 02/27/2014] [Indexed: 10/25/2022]
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44
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Shi J, Zhu Y, Wang J, Chen J. A combined spectroscopic and molecular docking approach to characterize binding interaction of megestrol acetate with bovine serum albumin. LUMINESCENCE 2014; 30:44-52. [DOI: 10.1002/bio.2688] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 03/02/2014] [Accepted: 03/23/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Jie‐hua Shi
- College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310032 China
- State Key Laboratory Breeding Base of Green Chemistry Synthesis TechnologyZhejiang University of Technology Hangzhou 310032 China
| | - Ying‐yao Zhu
- College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310032 China
| | - Jing Wang
- College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310032 China
| | - Jun Chen
- College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310032 China
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45
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Xu C, Gu J, Ma X, Dong T, Meng X. Investigation on the interaction of pyrene with bovine serum albumin using spectroscopic methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 125:391-395. [PMID: 24566118 DOI: 10.1016/j.saa.2014.01.132] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 01/21/2014] [Accepted: 01/26/2014] [Indexed: 06/03/2023]
Abstract
This paper was designed to investigate the interaction of pyrene with bovine serum albumin (BSA) under physiological condition by spectroscopic methods. Spectroscopic analysis of the emission quenching revealed that the quenching mechanism of BSA by pyrene was static. The binding sites and constants of pyrene-BSA complex were observed to be 1.20 and 2.63×10(6) L mol(-1) at 298 K, respectively. The enthalpy change (ΔH) and entropy change (ΔS) revealed that van der Waals forces and hydrogen bonds stabilized the pyrene-BSA complex. Energy transfer from tryptophan to pyrene occurred by a FRET (fluorescence resonance energy transfer) mechanism, and the distance (r=2.72 nm) had been determined. The results of synchronous, three-dimensional fluorescence, and circular dichroism spectra showed that the pyrene induced conformational changes of BSA.
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Affiliation(s)
- Chengbin Xu
- School of Environmental Science, Liaoning University, Shenyang 110036, China
| | - Jiali Gu
- College of Chemistry, Chemical Engineering and Food Safety, Bohai University, Jinzhou 121013, China
| | - Xiping Ma
- School of Environmental Science, Liaoning University, Shenyang 110036, China
| | - Tian Dong
- School of Environmental Science, Liaoning University, Shenyang 110036, China
| | - Xuelian Meng
- School of Pharmacy, Liaoning University, Shenyang 110036, China.
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46
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Zeng HJ, Liang HL, You J, Qu LB. Study on the binding of chlorogenic acid to pepsin by spectral and molecular docking. LUMINESCENCE 2013; 29:715-21. [DOI: 10.1002/bio.2610] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Revised: 10/02/2013] [Accepted: 10/11/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Hua-jin Zeng
- School of Pharmaceutical Sciences; Zhengzhou University; Zhengzhou 450001 People's Republic of China
| | - Hui-li Liang
- School of Pharmaceutical Sciences; Zhengzhou University; Zhengzhou 450001 People's Republic of China
| | - Jing You
- School of Pharmaceutical Sciences; Zhengzhou University; Zhengzhou 450001 People's Republic of China
| | - Ling-bo Qu
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 People's Republic of China
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