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Al-Shabib NA, Khan JM, Malik A, AlAmri A, Rehman MT, AlAjmi MF, Husain FM. Integrated spectroscopic and computational analyses unravel the molecular interaction of pesticide azinphos-methyl with bovine beta-lactoglobulin. J Mol Recognit 2024; 37:e3086. [PMID: 38686702 DOI: 10.1002/jmr.3086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 03/25/2024] [Accepted: 04/17/2024] [Indexed: 05/02/2024]
Abstract
Organophosphorus are typically hazardous chemicals used in the pharmaceutical, agricultural, and other industries. They pose a serious risk to human life and can be fatal upon direct exposure. Hence, studying the interaction between such compounds with proteins is crucial for environmental, health, and food safety. In this study, we investigated the interaction mechanism between azinphos-methyl (AZM) and β-lactoglobulin (BLG) at pH 7.4 using a combination of biophysical techniques. Intrinsic fluorescence investigations revealed that BLG fluorescence was quenched in the presence of increasing AZM concentrations. The quenching mechanism was identified as static, as evidenced by a decrease in the fluorescence quenching constant (1.25 × 104, 1.18 × 104, and 0.86 × 104 M-1) with an increase in temperatures. Thermodynamic calculations (ΔH > 0; ΔS > 0) affirmed the formation of a complex between AZM and BLG through hydrophobic interactions. The BLG's secondary structure was found to be increased due to AZM interaction. Ultraviolet -visible spectroscopy data showed alterations in BLG conformation in the presence of AZM. Molecular docking highlighted the significant role of hydrophobic interactions involving residues such as Val43, Ile56, Ile71, Val92, Phe105, and Met107 in the binding between BLG and AZM. A docking energy of -6.9 kcal mol-1, and binding affinity of 1.15 × 105 M-1 suggest spontaneous interaction between AZM and BLG with moderate to high affinity. These findings underscore the potential health risks associated with the entry of AZM into the food chain, emphasizing the need for further consideration of its impact on human health.
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Affiliation(s)
- Nasser Abdulatif Al-Shabib
- Department of Food Science and Nutrition, Faculty of Food and Agricultural Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Javed Masood Khan
- Department of Food Science and Nutrition, Faculty of Food and Agricultural Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ajamaluddin Malik
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Abdulaziz AlAmri
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Md Tabish Rehman
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed F AlAjmi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Fohad Mabood Husain
- Department of Food Science and Nutrition, Faculty of Food and Agricultural Sciences, King Saud University, Riyadh, Saudi Arabia
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2
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Zhu J, Liu S, Dai L, Yu F, Zhou T, Chen J, Xu J, Yu B, Tang S, Liu Q, Yang XL, Han XL. Elucidating the interaction between equisetin and human serum albumin: A comprehensive study using spectroscopy, microcalorimetry and molecular docking approaches. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 304:123409. [PMID: 37729815 DOI: 10.1016/j.saa.2023.123409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 08/28/2023] [Accepted: 09/12/2023] [Indexed: 09/22/2023]
Abstract
Equisetin, a bioactive compound of marine origin, offers compelling inhibitory properties against HIV-1 transcriptase. To gain comprehensive insights into the interaction of Equisetin with human serum albumin (HSA), we utilized a multipronged approach involving spectroscopy, isothermal titration calorimetry (ITC) and molecular docking. Our fluorescence analyses confirmed that the interaction between Equisetin and HSA results in a significant quenching of HSA's fluorescence, primarily achieved through a dynamic mechanism aided by hydrogen bonding and van der Waals forces. Isothermal titration calorimetry (ITC) measurements revealed an impressive binding affinity of Equisetin for HSA, quantified to be 4.3 × 107 mol L-1. Molecular docking studies illustrated that Equisetin binds at site III of HSA, with specific amino acid residues, GLN-104 and LYS-106, playing a pivotal role. Further, our study discovered that the interaction induces slight unfolding of HSA's polypeptide chain and significant alterations in its secondary structure, thereby triggering the exposure of previously concealed hydrophobic regions. This comprehensive study enhances our understanding of Equisetin's interaction with serum proteins, potentially influencing its pharmacokinetics and pharmacodynamics, and opening avenues for future research and therapeutic applications.
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Affiliation(s)
- Jiahua Zhu
- Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, PR China
| | - Shuzhi Liu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China
| | - Le Dai
- Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, PR China
| | - Fan Yu
- Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, PR China
| | - Tao Zhou
- Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, PR China
| | - Jiang Chen
- Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, PR China
| | - Jianming Xu
- Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, PR China
| | - Boren Yu
- Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, PR China
| | - Shuoya Tang
- Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, PR China
| | - Qingpei Liu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China
| | - Xiao-Long Yang
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China
| | - Xiao-Le Han
- Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, PR China.
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Li X, Yan X, Yang D, Chen S, Yuan H. Probing the Interaction between Isoflucypram Fungicides and Human Serum Albumin: Multiple Spectroscopic and Molecular Modeling Investigations. Int J Mol Sci 2023; 24:12521. [PMID: 37569896 PMCID: PMC10420152 DOI: 10.3390/ijms241512521] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/23/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
To better understand the potential toxicity risks of isoflucypram in humans, The interaction between isoflucypram and HSA (human serum albumin) was studied through molecular docking, molecular dynamics simulations, ultraviolet-visible absorption, fluorescence, synchronous fluorescence, three-dimensional fluorescence, Fourier transform infrared spectroscopies, and circular dichroism spectroscopies. The interaction details were studied using the molecular docking method and molecular dynamics simulation method. The results revealed that the effect of isoflucypram on human serum albumin was mixed (static and dynamic) quenching. Additionally, we were able to obtain important information on the number of binding sites, binding constants, and binding distance. The interaction between isoflucypram and human serum albumin occurred mainly through hydrogen bonds and van der Waals forces. Spectroscopic results showed that isoflucypram caused conformational changes in HSA (human serum albumin), in which the α-helix was transformed into a β-turn, β-sheet, and random coil, causing the HSA structure to loosen. By providing new insights into the mechanism of binding between isoflucypram and human serum albumin, our study has important implications for assessing the potential toxicity risks associated with isoflucypram exposure.
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Affiliation(s)
| | - Xiaojing Yan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (X.L.); (S.C.)
| | | | | | - Huizhu Yuan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (X.L.); (S.C.)
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4
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Johari-Ahar M, Abdian M, Maleki S, Abbasgolizadeh P, Fathi F. Intercalation of anticancer drug mitoxantrone into DNA: Studied by spectral and surface plasmon resonance methods. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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5
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Tian Z, Ding T, Niu H, Mu Y, Xu N, Kong M, Zhang Y, Tian Z, Wu Y, Wang C. The substituent group effect: investigation of naphthalimide-spermidine conjugates binding to DNA by spectroscopy, molecular docking and dynamics. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Hou C, Wang Z, Li X, Bai Y, Chai J, Li X, Gao J, Xu H. Study of modeling and optimization for predicting the acute toxicity of carbamate pesticides using the binding information with carrier protein. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 273:121038. [PMID: 35189491 DOI: 10.1016/j.saa.2022.121038] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 02/08/2022] [Accepted: 02/11/2022] [Indexed: 06/14/2023]
Abstract
To predict drug acute toxicity using the binding information with human serum albumin, our research group established a new method (Carrier protein binding information-toxicity relationship, CPBITR). Unfortunately, the previous model had too few data sets which may affect the accuracy and credibility of the model. In this paper, therefore, we measured the binding modes of three carbamate pesticides, Bendiocarb, Butocarboxim and Dioxacarb with human serum albumin (HSA) to supplement the previously modeled training set. Multispectral methods and molecular docking were used to study their binding modes. We built and optimized the previous models with the combined information of three different toxicity pesticides and HSA in order to find better prediction method. The results showed that Back-propagation Artificial Neural Network model has the best fitting effect among these models. In conclusion, the proposed model effectively improves the accuracy and credibility of the existing model. It results in significant predict drug acute toxicity using the binding information with carrier protein and contribute to drug development and research.
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Affiliation(s)
- Chenxin Hou
- Engineering Research Center of Pesticide of Heilongjiang Province, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, 150080 Harbin, China
| | - Zishi Wang
- Engineering Research Center of Pesticide of Heilongjiang Province, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, 150080 Harbin, China
| | - Xiangshuai Li
- Engineering Research Center of Pesticide of Heilongjiang Province, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, 150080 Harbin, China
| | - Yuqian Bai
- Engineering Research Center of Pesticide of Heilongjiang Province, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, 150080 Harbin, China
| | - Jiashuang Chai
- Engineering Research Center of Pesticide of Heilongjiang Province, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, 150080 Harbin, China
| | - Xiangfen Li
- Engineering Research Center of Pesticide of Heilongjiang Province, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, 150080 Harbin, China
| | - Jinsheng Gao
- Engineering Research Center of Pesticide of Heilongjiang Province, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, 150080 Harbin, China.
| | - Hongliang Xu
- Engineering Research Center of Pesticide of Heilongjiang Province, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, 150080 Harbin, China.
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7
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Zhao L, Jin X, Li Y, Yu Y, He L, Liu R. Effects of A-type oligomer procyanidins on protein glycation using two glycation models coupled with spectroscopy, chromatography, and molecular docking. Food Res Int 2022; 155:111068. [DOI: 10.1016/j.foodres.2022.111068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 02/07/2022] [Accepted: 02/23/2022] [Indexed: 11/04/2022]
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8
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Naik R, Pawar S, Seetharamappa J. Elucidating the binding mechanism of a cholesterol absorption inhibitor with a serum albumin: spectroscopic, zeta potential, voltammetric and computational studies. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02148-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Study of β-lactam-based drug interaction with albumin protein using optical, sensing, and docking methods. J Biol Phys 2022; 48:177-194. [DOI: 10.1007/s10867-021-09599-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 12/07/2021] [Indexed: 10/19/2022] Open
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10
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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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11
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Cao X, Liu C, Zhang M, Bi R, Fu M, Korik E, Chen J, Gao J, Semak I, Liu J. Bovine lactoferrin and Lentinus edodes mycelia polysaccharide complex: The formation and the activity to protect islet β cells. Int J Biol Macromol 2021; 191:811-820. [PMID: 34592222 DOI: 10.1016/j.ijbiomac.2021.09.143] [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: 07/12/2021] [Revised: 09/10/2021] [Accepted: 09/18/2021] [Indexed: 11/20/2022]
Abstract
The formation of complexes may be used for the development of delivery systems in foods field. The aim of this study was to explore the interaction mechanism between Lentinus edodes mycelia polysaccharide (LMP) and bovine lactoferrin (BLF), and the activity of LMP-BLF complex to inhibit oxidative stress in islet β cells. The interaction mechanisms of LMP with BLF were investigated with multi-spectroscopic techniques. The multi-spectroscopic analysis result showed that LMP bound with BLF by van der Waals force and hydrogen bond. The quenching mechanism of BLF with LMP was static quenching. Cell viability, reactive oxygen species (ROS) level, apoptosis and the related signaling pathways were detected with thiazolyl blue tetrazolium bromide (MTT) assay, 2,7-Dichlorofluorescin diacetate (DCFH-DA) staining, Hoechst 33258 staining and Western blot methods respectively. The complex alleviated apoptosis induced by hydrogen peroxide (H2O2), and inhibited oxidative stress via MAPK pathways in MIN6 cells. In addition, the complex was able to promote glucose uptake in HepG2 cells. These results will broaden our understanding of LMP-BLF complexes and the applications of polysaccharide-protein complexes in the foods field.
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Affiliation(s)
- Xiangyu Cao
- Department of Biological Sciences, School of life Science, Liaoning University, Chongshan Road 66, Shenyang 110036, PR China
| | - Chengying Liu
- Department of Biological Sciences, School of life Science, Liaoning University, Chongshan Road 66, Shenyang 110036, PR China
| | - Mengmeng Zhang
- Department of Biochemistry Belarusian State University, Nezavisimisty Ave., 4, BSU, The Faculty of Biology, 220030 Minsk, Belarus
| | - Ruochen Bi
- Department of Biological Sciences, School of life Science, Liaoning University, Chongshan Road 66, Shenyang 110036, PR China
| | - Mingyang Fu
- Department of Biological Sciences, School of life Science, Liaoning University, Chongshan Road 66, Shenyang 110036, PR China
| | - Elena Korik
- Department of Biochemistry Belarusian State University, Nezavisimisty Ave., 4, BSU, The Faculty of Biology, 220030 Minsk, Belarus
| | - Jiahe Chen
- Department of Biological Sciences, School of life Science, Liaoning University, Chongshan Road 66, Shenyang 110036, PR China
| | - Jianyun Gao
- Department of Biological Sciences, School of life Science, Liaoning University, Chongshan Road 66, Shenyang 110036, PR China
| | - Igor Semak
- Department of Biochemistry Belarusian State University, Nezavisimisty Ave., 4, BSU, The Faculty of Biology, 220030 Minsk, Belarus.
| | - Jianli Liu
- Department of Biological Sciences, School of life Science, Liaoning University, Chongshan Road 66, Shenyang 110036, PR China.
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13
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Karami K, Jamshidian N, Zakariazadeh M, Momtazi-Borojeni AA, Abdollahi E, Amirghofran Z, Shahpiri A, Nasab AK. Experimental and theoretical studies of Palladium-hydrazide complexes' interaction with DNA and BSA, in vitro cytotoxicity activity and plasmid cleavage ability. Comput Biol Chem 2021; 91:107435. [PMID: 33493981 DOI: 10.1016/j.compbiolchem.2021.107435] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 11/10/2020] [Accepted: 01/05/2021] [Indexed: 11/29/2022]
Abstract
New palladium complexes with general formula trans-[Pd(L)2(OAc)2] (1,2), (L = Benzhydrazide and 2-Furoic hydrazide) have been synthesized and characterized with various methods including elemental analysis, FT-IR, 1HNMR and mass spectroscopy. Afterward their interactions with bovine serum albumin and calf thymus deoxyribonucleic acid have been investigated by UV-vis absorption, fluorescence emission and circular dichroism spectroscopy. Also, site-selective replacement experiments with site probes have been carried out. Analysis of fluorescence spectrum indicated static quenching mechanism. Spectroscopic measurements for DNA binding showed the groove binding to DNA for both complexes. Furthermore, cytotoxicity studies of complexes and cis-platin have been done against colon carcinoma (CT26) and breast cancer (4T1) cell lines. Evaluation of complexes (1) and (2) on induction of apoptosis in CT26 cells has been done. Finally, plasmid cleavage ability of (1) and (2) was investigated by gel electrophoresis that indicate the more activity of (1) than (2).
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Affiliation(s)
- Kazem Karami
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156/ 83111, Iran.
| | - Nasrin Jamshidian
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156/ 83111, Iran.
| | - Mostafa Zakariazadeh
- Research Institute for Fundamental Sciences (RIFS), University of Tabriz, Tabriz, Iran
| | - Amir Abbas Momtazi-Borojeni
- Halal Research Center of IRI, FDA, Tehran, Iran; Nanotechnology Research Center, Bu-Ali Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medical Biotechnology, Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Elham Abdollahi
- Halal Research Center of IRI, FDA, Tehran, Iran; Department of Medical Immunology, Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Amirghofran
- Immunology Department and Autoimmune Diseases Research Center. Shiraz University of Medical Sciences, Shiraz. Iran
| | - Azar Shahpiri
- Department of Biotechnology, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Akram Kazemi Nasab
- Department of Biotechnology, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran
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14
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Huang CD, Zheng HH, Zhang XY, Liu DZ, Gao JM, Zhang Q. Insight into the α-glucosidase-inhibiting mechanism of β-PGG, a commonly occurring polyphenol in diets. Nat Prod Res 2021; 36:1380-1384. [PMID: 33459059 DOI: 10.1080/14786419.2021.1873983] [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: 10/22/2022]
Abstract
1,2,3,4,6-Penta-O-galloyl-β-D-glucopyranose (β-PGG) is a compound commonly available in vegetables and fruits. It exhibited potential inhibition of α-glucosidase and hypoglycemic effect in vivo. This study explored its dynamics properties inhibiting α-glucosidase by Lineweaver - Burk plots, spectral analysis, docking analysis, and molecular dynamics simulations. β-PGG showed a mix-type inhibition when it was interacting with α-glucosidase. The fluorescence quenching indicated that the PGG-glucosidase complex formed in a spontaneous exothermic process and was driven by enthalpy. The synchronous fluorescence and ECD spectra indicate that β-PGG induced and changed the enzyme conformation in the complex formation. Docking results revealed multiple hydrogen bonds between the phenols and the amino acid residues. Further dynamic simulations indicated that the residues Asp345, Phe153, Arg435, Glu300, Pro305, and Phe296 played a more critical role in the interactions between β-PGG and α-glucosidase.
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Affiliation(s)
- Cheng-Di Huang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, China
| | - Hang-Hang Zheng
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, China
| | - Xiao-Yue Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, China
| | - Da-Zhi Liu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, China
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, China
| | - Qiang Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, China
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15
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Jo S, Kim S, Shin DH, Kim MS. Inhibition of African swine fever virus protease by myricetin and myricitrin. J Enzyme Inhib Med Chem 2020; 35:1045-1049. [PMID: 32299265 PMCID: PMC7178854 DOI: 10.1080/14756366.2020.1754813] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
African swine fever (ASF) caused by the ASF virus (ASFV) is the most hazardous swine disease. Since a huge number of pigs have been slaughtered to avoid a pandemic spread, intense studies on the disease should be followed quickly. Recent studies reported that flavonoids have various antiviral activity including ASFV. In this report, ASFV protease was selected as an antiviral target protein to cope with ASF. With a FRET (Fluorescence resonance energy transfer) method, ASFV protease was assayed with a flavonoid library which was composed of sixty-five derivatives classified based on ten different scaffolds. Of these, the flavonols scaffold contains a potential anti-ASFV protease activity. The most prominent flavonol was myricetin with IC50 of 8.4 μM. Its derivative, myricitrin, with the rhamnoside moiety was also showed the profound inhibitory effect on ASFV protease. These two flavonols apparently provide a way to develop anti-ASFV agents based on their scaffold.
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Affiliation(s)
- Seri Jo
- College of Pharmacy and Graduates School of Pharmaceutical Sciences, Ewha W. University, Seoul, Republic of Korea
| | - Suwon Kim
- College of Pharmacy and Graduates School of Pharmaceutical Sciences, Ewha W. University, Seoul, Republic of Korea
| | - Dong Hae Shin
- College of Pharmacy and Graduates School of Pharmaceutical Sciences, Ewha W. University, Seoul, Republic of Korea
| | - Mi-Sun Kim
- College of Pharmacy and Graduates School of Pharmaceutical Sciences, Ewha W. University, Seoul, Republic of Korea
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16
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Estevão BM, de Freitas CF, Franciscato DS, de Assis FF, de Oliveira KT, Hioka N, Caetano W, Muniz EC. Synthetic chlorin derivative self-prevented from aggregation: Behavior in homogeneous medium for PDT applications. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Jo S, Kim S, Shin DH, Kim MS. Inhibition of SARS-CoV 3CL protease by flavonoids. J Enzyme Inhib Med Chem 2020; 35:145-151. [PMID: 31724441 PMCID: PMC6882434 DOI: 10.1080/14756366.2019.1690480] [Citation(s) in RCA: 428] [Impact Index Per Article: 107.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/27/2019] [Accepted: 10/29/2019] [Indexed: 11/24/2022] Open
Abstract
There were severe panics caused by Severe Acute Respiratory Syndrome (SARS) and Middle-East Respiratory Syndrome-Coronavirus. Therefore, researches targeting these viruses have been required. Coronaviruses (CoVs) have been rising targets of some flavonoids. The antiviral activity of some flavonoids against CoVs is presumed directly caused by inhibiting 3C-like protease (3CLpro). Here, we applied a flavonoid library to systematically probe inhibitory compounds against SARS-CoV 3CLpro. Herbacetin, rhoifolin and pectolinarin were found to efficiently block the enzymatic activity of SARS-CoV 3CLpro. The interaction of the three flavonoids was confirmed using a tryptophan-based fluorescence method, too. An induced-fit docking analysis indicated that S1, S2 and S3' sites are involved in binding with flavonoids. The comparison with previous studies showed that Triton X-100 played a critical role in objecting false positive or overestimated inhibitory activity of flavonoids. With the systematic analysis, the three flavonoids are suggested to be templates to design functionally improved inhibitors.
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Affiliation(s)
- Seri Jo
- College of Pharmacy and Graduates School of Pharmaceutical Sciences, Ewha W. University, Seoul, Republic of Korea
| | - Suwon Kim
- College of Pharmacy and Graduates School of Pharmaceutical Sciences, Ewha W. University, Seoul, Republic of Korea
| | - Dong Hae Shin
- College of Pharmacy and Graduates School of Pharmaceutical Sciences, Ewha W. University, Seoul, Republic of Korea
| | - Mi-Sun Kim
- College of Pharmacy and Graduates School of Pharmaceutical Sciences, Ewha W. University, Seoul, Republic of Korea
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18
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Jo S, Kim S, Kim DY, Kim MS, Shin DH. Flavonoids with inhibitory activity against SARS-CoV-2 3CLpro. J Enzyme Inhib Med Chem 2020; 35:1539-1544. [PMID: 32746637 PMCID: PMC7470085 DOI: 10.1080/14756366.2020.1801672] [Citation(s) in RCA: 111] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) has been a pandemic disease of which the termination is not yet predictable. Currently, researches to develop vaccines and treatments is going on globally to cope with this disastrous disease. Main protease (3CLpro) from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is one of the good targets to find antiviral agents before vaccines are available. Some flavonoids are known to inhibit 3CLpro from SARS-CoV which causes SARS. Since their sequence identity is 96%, a similar approach was performed with a flavonoid library. Baicalin, herbacetin, and pectolinarin have been discovered to block the proteolytic activity of SARS-CoV-2 3CLpro. An in silico docking study showed that the binding modes of herbacetin and pectolinarin are similar to those obtained from the catalytic domain of SARS-CoV 3CLpro. However, their binding affinities are different due to the usage of whole SARS-CoV-2 3CLpro in this study. Baicalin showed an effective inhibitory activity against SARS-CoV-2 3CLpro and its docking mode is different from those of herbacetin and pectolinarin. This study suggests important scaffolds to design 3CLpro inhibitors to develop antiviral agents or health-foods and dietary supplements to cope with SARS-CoV-2.
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Affiliation(s)
- Seri Jo
- College of Pharmacy, Graduates School of Pharmaceutical Sciences, Ewha W. University, Seoul, Republic of Korea
| | - Suwon Kim
- College of Pharmacy, Graduates School of Pharmaceutical Sciences, Ewha W. University, Seoul, Republic of Korea
| | - Dae Yong Kim
- N-BIOTEK, Bucheon-Si, Gyeong-gi, Republic of Korea
| | - Mi-Sun Kim
- College of Pharmacy, Graduates School of Pharmaceutical Sciences, Ewha W. University, Seoul, Republic of Korea
| | - Dong Hae Shin
- College of Pharmacy, Graduates School of Pharmaceutical Sciences, Ewha W. University, Seoul, Republic of Korea
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Synthesis and characterization of dimeric Schiff base CoII, NiII, CuII complexes for their catalytic application of aerobic oxidation of alcohol and interaction with biomolecules. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119626] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Tian Z, Tian L, Shi M, Zhao S, Guo S, Luo W, Wang C, Tian Z. Investigation of the interaction of a polyamine-modified flavonoid with bovine serum albumin (BSA) by spectroscopic methods and molecular simulation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 209:111917. [PMID: 32679511 DOI: 10.1016/j.jphotobiol.2020.111917] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 05/20/2020] [Accepted: 05/22/2020] [Indexed: 02/07/2023]
Abstract
The interaction between BSA and compound 1 was studied by UV-vis, fluorescence and circular dichroism spectroscopy under physiological conditions (pH = 7.4). Molecular docking and molecular dynamics analyses were also performed. The results showed that compound 1 could bind to BSA. When compound 1 bound to BSA, there were a series of changes in the spectral properties of BSA, which were an enhancement effect of the UV-Vis spectrum of BSA, fluorescence quenching and a weak conformational change in the CD spectrum. The results of the fluorescence experiments at 298, 303 and 310 K showed that fluorescence quenching caused by the addition of compound 1 to BSA was generally static quenching accompanied by a dynamic quenching process, which was shown by the quenching constants of 2.010 × 104 L∙M-1, 1.850 × 104 L∙M-1, and 1.970 × 104 L∙M-1 at the three different temperatures, respectively. From the obtained binding constants and thermodynamic parameters, it was found that hydrophobic forces played an important role in the binding process of 1 to BSA. The results of synchronous fluorescence and three-dimensional fluorescence showed that compound 1 caused a weak conformational change in BSA. Docking results showed that compound 1 was located at binding site II of bovine serum albumin protease. In addition, the flavonoid moiety of compound 1 contributes to the hydrophobic binding of compound 1 to BSA. The results of molecular dynamics, including the root-mean-square deviation (RMSD) and RMS fluctuation (RMSF) values, showed that the binding of compound 1 to BSA did not cause a significant conformational change in BSA.
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Affiliation(s)
- Zhiyong Tian
- Institute for innovative drug design and evaluation, School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Luyao Tian
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, Henan 475001, China
| | - Man Shi
- Institute for innovative drug design and evaluation, School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Sihan Zhao
- Institute for innovative drug design and evaluation, School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Shudi Guo
- Institute for innovative drug design and evaluation, School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Wen Luo
- The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, China.
| | - Chaojie Wang
- The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, China.
| | - Zhihui Tian
- Smart city institute of Zhengzhou University, Zhengzhou, Henan 450001, China.
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21
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Chaves OA, Acunha TV, Iglesias BA, Jesus CS, Serpa C. Effect of peripheral platinum(II) bipyridyl complexes on the interaction of tetra-cationic porphyrins with human serum albumin. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112466] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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22
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Jo S, Kim H, Kim S, Shin DH, Kim M. Characteristics of flavonoids as potent MERS-CoV 3C-like protease inhibitors. Chem Biol Drug Des 2019; 94:2023-2030. [PMID: 31436895 PMCID: PMC7162010 DOI: 10.1111/cbdd.13604] [Citation(s) in RCA: 169] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 07/18/2019] [Accepted: 07/30/2019] [Indexed: 12/16/2022]
Abstract
Middle East respiratory syndrome-coronavirus (MERS-CoV) is a zoonotic virus transmitted between animals and human beings. It causes MERS with high mortality rate. However, no vaccine or specific treatment is currently available. Since antiviral activity of some flavonoids is known, we applied a flavonoid library to probe inhibitory compounds against MERS-CoV 3C-like protease (3CLpro). Herbacetin, isobavachalcone, quercetin 3-β-d-glucoside and helichrysetin were found to block the enzymatic activity of MERS-CoV 3CLpro. The binding of the four flavonoids was also confirmed independently using a tryptophan-based fluorescence method. The systematic comparison of the binding affinity of flavonoids made it possible to infer their scaffolds and functional groups required to bind with MERS-CoV 3CLpro. An induced-fit docking analysis revealed that S1 and S2 sites play a role in interaction with flavonoids. The experimental and computational study showed that flavonol and chalcone are favourite scaffolds to bind with the catalytic site of MERS-CoV 3CLpro. It was also deduced that some flavonoid derivatives with hydrophobic or carbohydrate attached to their core structures have a good inhibitory effect. Therefore, we suggest that flavonoids with these characteristics can be used as templates to develop potent MERS-CoV 3CLpro inhibitors.
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Affiliation(s)
- Seri Jo
- College of Pharmacy and Graduates School of Pharmaceutical SciencesEwha Womans UniversitySeoulKorea
| | - Hyojin Kim
- College of Pharmacy and Graduates School of Pharmaceutical SciencesEwha Womans UniversitySeoulKorea
| | - Suwon Kim
- College of Pharmacy and Graduates School of Pharmaceutical SciencesEwha Womans UniversitySeoulKorea
| | - Dong Hae Shin
- College of Pharmacy and Graduates School of Pharmaceutical SciencesEwha Womans UniversitySeoulKorea
| | - Mi‐Sun Kim
- College of Pharmacy and Graduates School of Pharmaceutical SciencesEwha Womans UniversitySeoulKorea
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Parveen M, Aslam A, Alam M, Siddiqui MF, Bano B, Azaz S, Silva MR, Silva PSP. Synthesisand Characterization of Benzothiophene‐3‐carbonitrile Derivative and Its Interactions with Human Serum Albumin (HSA). ChemistrySelect 2019. [DOI: 10.1002/slct.201902378] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mehtab Parveen
- Division of Organic SynthesisDepartment of ChemistryAligarh Muslim University Aligarh 202002 India
| | - Afroz Aslam
- Division of Organic SynthesisDepartment of ChemistryAligarh Muslim University Aligarh 202002 India
| | - Mahboob Alam
- Division of Chemistry and BiotechnologyDongguk University 123Dongdae-ro Gyeongju 780-714 Republic of Korea
| | | | - Bilqees Bano
- Department of BiochemistryAligarh Muslim University Aligarh 202002 India
| | - Shaista Azaz
- Division of Organic SynthesisDepartment of ChemistryAligarh Muslim University Aligarh 202002 India
| | - Manuela Ramos Silva
- CFisUCDepartment of PhysicsUniversity of Coimbra, P- 3004-516 Coimbra Portugal
| | - P. S. Pereira Silva
- CFisUCDepartment of PhysicsUniversity of Coimbra, P- 3004-516 Coimbra Portugal
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24
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Martinez NY, Moreno MS. Oil-in-water emulsion development for the encapsulation and sustained release of xanthone. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1578663] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Nelida Yanina Martinez
- Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, San Carlos de Bariloche, Argentina
| | - Mario Sergio Moreno
- Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, San Carlos de Bariloche, Argentina
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25
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Chandel TI, Masroor A, Siddiqi MK, Siddique IA, Jahan I, Ali M, Nayeem SM, Uversky VN, Khan RH. Molecular basis of the inhibition and disaggregation of thermally-induced amyloid fibrils of human serum albumin by an anti-Parkinson's drug, benserazide hydrochloride. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.127] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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26
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Al-Shabib NA, Khan JM, Malik A, Alsenaidy MA, Rehman MT, AlAjmi MF, Alsenaidy AM, Husain FM, Khan RH. Molecular insight into binding behavior of polyphenol (rutin) with beta lactoglobulin: Spectroscopic, molecular docking and MD simulation studies. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.07.122] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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27
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Chi Q, Li Z, Huang J, Ma J, Wang X. Interactions of perfluorooctanoic acid and perfluorooctanesulfonic acid with serum albumins by native mass spectrometry, fluorescence and molecular docking. CHEMOSPHERE 2018; 198:442-449. [PMID: 29425944 DOI: 10.1016/j.chemosphere.2018.01.152] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/26/2018] [Accepted: 01/28/2018] [Indexed: 05/22/2023]
Abstract
The binding information of perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) with bovine and human serum albumins was investigated and characterized in details by using a combination method of electrospray ionization mass spectrometry (ESI-MS), fluorescence, circular dichroism (CD) and molecular docking (MD). The ESI-MS analysis revealed that maximally eight PFOA or PFOS molecules could bind to serum albumins at high mole ratios of PFOA/PFOS. Association constants were measured by ESI-MS and suggested that PFOS had a better binding affinity than PFOA. PFOA and PFOS were likely to bind with serum albumins in more than one pocket. The CD data demonstrated that binding of PFOA and PFOS could change the conformation of serum albumins with decreasing α-helix content, which may affect the protein physiological function. The phenomenon of protein fluorescence quenching by the binding of PFOA and PFOS indicated that the hydrophobic pocket proximate to Trp 214 in human serum albumin might be one of the dominated binding sites. This assumption was further confirmed by MD simulation. Consistent to ESI-MS observation, MD results also displayed a stronger binding affinity of PFOS than PFOA according to the calculated binding free energy, which is probably ascribed to one more hydrogen bond formed in the PFOS-bound protein complexes.
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Affiliation(s)
- Quan Chi
- Key Laboratory of Analytical Chemistry of State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Zhixiong Li
- Key Laboratory of Analytical Chemistry of State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Juan Huang
- Key Laboratory of Analytical Chemistry of State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Jieyao Ma
- Key Laboratory of Analytical Chemistry of State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Xian Wang
- Key Laboratory of Analytical Chemistry of State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, PR China.
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28
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Ajmal MR, Almutairi F, Zaidi N, Alam P, Siddiqi MK, Khan MV, Zaman M, Ishtikhar M, Khan RH. Biophysical insights into the interaction of clofazimine with human alpha 1-acid glycoprotein: a multitechnique approach. J Biomol Struct Dyn 2018; 37:1390-1401. [DOI: 10.1080/07391102.2018.1461686] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Affiliation(s)
- Mohammad Rehan Ajmal
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
- Department of Biochemistry, Faculty of Sciences, University of Tabuk, Tabuk 71491, Kingdom of Saudi Arabia
| | - Fahad Almutairi
- Department of Biochemistry, Faculty of Sciences, University of Tabuk, Tabuk 71491, Kingdom of Saudi Arabia
| | - Nida Zaidi
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Parvez Alam
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | | | - Mohsin Vahid Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Masihuz Zaman
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Mohd Ishtikhar
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
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29
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Ding LZ, Teng X, Zhang ZB, Zheng CJ, Chen SH. Mangiferin inhibits apoptosis and oxidative stress via BMP2/Smad-1 signaling in dexamethasone-induced MC3T3-E1 cells. Int J Mol Med 2018; 41:2517-2526. [PMID: 29484386 PMCID: PMC5846652 DOI: 10.3892/ijmm.2018.3506] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 01/17/2018] [Indexed: 01/01/2023] Open
Abstract
Mangiferin is a xanthone glucoside, which possesses antioxidant, antiviral, antitumor and anti-inflammatory functions, and is associated with gene regulation. However, it remains unknown whether mangiferin protects osteoblasts, such as the MC3T3-E1 cell line, against glucocorticoid-induced damage. In the present study, MC3T3-E1 cells were treated with dexamethasone (Dex), which is a well-known synthetic glucocorticoid, in order to establish a glucocorticoid-induced cell injury model. After Dex and/or mangiferin treatment, cell viability, apoptosis and reactive oxygen species (ROS) production was measured by Cell Counting kit-8 (CCK-8) and flow cytometry, respectively, and the concentration of tumor necrosis factor (TNF)-α, interleukin (IL)-6 and macrophage colony-stimulating factor (M-CSF) was measured by ELISA. The expression of bone morphogenetic protein 2 (BMP2), phosphorylated-SMAD family member 1 (p-Smad-1), t-Smad-1, osterix (OSX), osteocalcin (OCN), osteoprotegerin (OPG), receptor activator of nuclear factor-κB (RANK), RANK ligand (RANKL), B-cell lymphoma 2 (Bcl-2) and Bcl-2-associated X protein (Bax) was measured by real-time PCR and/or western blot analysis. The results indicated that pretreatment of MC3T3-E1 cells with mangiferin for 3 h prior to exposure to Dex for 48 h significantly attenuated Dex-induced injury and inflammation, as demonstrated by increased cell viability, and decreases in apoptosis, ROS generation, and the secretion of TNF-α, IL-6 and M-CSF. In addition, pretreatment with mangiferin markedly reduced Dex-induced BMP2 and p-Smad-1 downregulation, and corrected the expression of differentiation- and apoptosis-associated markers, including alkaline phosphatase, OSX, OCN, OPG, RANK, RANKL, Bcl-2 and Bax, which were altered by Dex treatment. Similar to the protective effects of mangiferin, overexpression of BMP2 suppressed not only Dex-induced cytotoxicity, but also ROS generation, and the secretion of TNF-α, IL-6 and M-CSF. In conclusion, the results of the present study are the first, to the best of our knowledge, to demonstrate that mangiferin protects MC3T3-E1 cells against Dex-induced apoptosis and oxidative stress by activating the BMP2/Smad-1 signaling pathway.
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Affiliation(s)
- Ling-Zhi Ding
- Department of Orthopedics, Taizhou Central Hospital, Taizhou, Zhejiang 318000, P.R. China
| | - Xiao Teng
- Department of Orthopedics, Taizhou Central Hospital, Taizhou, Zhejiang 318000, P.R. China
| | - Zhao-Bo Zhang
- Department of Orthopedics, Taizhou Central Hospital, Taizhou, Zhejiang 318000, P.R. China
| | - Chang-Jun Zheng
- Department of Orthopedics, Taizhou Central Hospital, Taizhou, Zhejiang 318000, P.R. China
| | - Shi-Hong Chen
- Department of Orthopedics, Taizhou Central Hospital, Taizhou, Zhejiang 318000, P.R. China
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30
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Tian Z, Cui H, Liu H, Dong J, Dong H, Zhao L, Li X, Zhang Y, Huang Y, Song L, Bian L, Wang Y, Xu X, Wang C. Study on the interaction between the 1,4,5,8-naphthalene diimide-spermine conjugate (NDIS) and DNA using a spectroscopic approach and molecular docking. MEDCHEMCOMM 2017; 8:2079-2092. [PMID: 30108725 PMCID: PMC6072523 DOI: 10.1039/c7md00389g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 09/26/2017] [Indexed: 01/23/2023]
Abstract
The interaction of herring sperm DNA with the 1,4,5,8-naphthalene diimide-spermine conjugate (NDIS) was studied by UV/vis absorption, fluorescence and CD spectroscopic methods. Compared with the 1,8-naphthalimide-spermidine conjugate (NIS), the values of KSV (quenching constant) and Kb (binding constant) of NDIS were larger, and the hypochromic effect in the UV/vis spectra and the quenching effect in the fluorescence of NDIS were more significant. The interaction mode between NDIS and DNA was mainly groove binding. The fluorescence experiments at varying temperatures showed that the binding process of NDIS and DNA was static, as both hydrogen bonds and hydrophobic forces played a major role in the binding of NDIS and DNA. The CD spectrum indicated that NDIS caused a conformational change, like the B to A-DNA transition, and the tests using KI and NaCl and 1H NMR spectroscopy indicated that NDIS was not a classical DNA inserter. All the results demonstrated that both the polyamine side chain and the aromatic rings affect the process of NDIS binding to DNA, which is thus obviously different from that of NIS. The conclusion was confirmed by the in silico molecular docking experiments.
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Affiliation(s)
- Zhiyong Tian
- Institute of Chemical Biology , Henan University , Kaifeng 475004 , China . ; Tel: +86 18739998722
| | - Hailong Cui
- Institute of Chemical Biology , Henan University , Kaifeng 475004 , China . ; Tel: +86 18739998722
| | - He Liu
- Institute of Chemical Biology , Henan University , Kaifeng 475004 , China . ; Tel: +86 18739998722
| | - Jun Dong
- Institute of Chemical Biology , Henan University , Kaifeng 475004 , China . ; Tel: +86 18739998722
| | - Huanyang Dong
- Institute of Chemical Biology , Henan University , Kaifeng 475004 , China . ; Tel: +86 18739998722
| | - Luyao Zhao
- Institute of Chemical Biology , Henan University , Kaifeng 475004 , China . ; Tel: +86 18739998722
| | - Xueting Li
- Institute of Chemical Biology , Henan University , Kaifeng 475004 , China . ; Tel: +86 18739998722
| | - Yan Zhang
- Institute of Chemical Biology , Henan University , Kaifeng 475004 , China . ; Tel: +86 18739998722
| | - Yingying Huang
- Institute of Chemical Biology , Henan University , Kaifeng 475004 , China . ; Tel: +86 18739998722
| | - Lina Song
- Institute of Chemical Biology , Henan University , Kaifeng 475004 , China . ; Tel: +86 18739998722
| | - Longxiang Bian
- The Key Laboratory of Natural Medicine and Immuno-Engineering , Henan University , Kaifeng 475004 , China . ; ; Tel: +86 18621534352 ; Tel: +86 13619810550
| | - Yuxia Wang
- Institute of Chemical Biology , Henan University , Kaifeng 475004 , China . ; Tel: +86 18739998722
| | - Xuejun Xu
- The Key Laboratory of Natural Medicine and Immuno-Engineering , Henan University , Kaifeng 475004 , China . ; ; Tel: +86 18621534352 ; Tel: +86 13619810550
| | - Chaojie Wang
- The Key Laboratory of Natural Medicine and Immuno-Engineering , Henan University , Kaifeng 475004 , China . ; ; Tel: +86 18621534352 ; Tel: +86 13619810550
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31
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Ochocka R, Hering A, Stefanowicz–Hajduk J, Cal K, Barańska H. The effect of mangiferin on skin: Penetration, permeation and inhibition of ECM enzymes. PLoS One 2017; 12:e0181542. [PMID: 28750062 PMCID: PMC5531637 DOI: 10.1371/journal.pone.0181542] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 07/03/2017] [Indexed: 11/19/2022] Open
Abstract
Mangiferin (2-C-β-D-glucopyranosyl-1,3,6,7-tetrahydroxyxanthone) is a polyphenol with strong antioxidant properties. Mangiferin is obtained from the mango tree (Mangifera indica L., Anacardiaceae). It has been proven that mangiferin exhibits many pharmacological activities. The aim of this study was to analyze the penetration of mangiferin into the human skin and through the skin. According to our knowledge, skin penetration and permeation studies of mangiferin have not been analyzed so far. Additionally, the influence of mangiferin on two Extracellular Matrix Enzymes (ECM): collagenase and elastase, was evaluated for the first time. It has been indicated that mangiferin is able to permeate the stratum corneum and penetrate into the epidermis and dermis in comparable amounts. For confirmation of the obtained results, fluorescence microscopy was successfully utilized. The analysis revealed the capability of mangiferin to reversibly inhibit elastase and collagenase activity. The mechanism of mangiferin interaction with both enzymes was estimated as a noncompetitive inhibition.
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Affiliation(s)
- Renata Ochocka
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Gdansk, Poland
| | - Anna Hering
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Gdansk, Poland
| | | | - Krzysztof Cal
- Department of Pharmaceutical Technology, Medical University of Gdansk, Gdansk, Poland
| | - Helena Barańska
- Department of Pharmaceutical Technology, Medical University of Gdansk, Gdansk, Poland
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Zhang QA, Fu XZ, García Martín JF. Effect of ultrasound on the interaction between (-)-epicatechin gallate and bovine serum albumin in a model wine. ULTRASONICS SONOCHEMISTRY 2017; 37:405-413. [PMID: 28427650 DOI: 10.1016/j.ultsonch.2017.01.031] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 01/20/2017] [Accepted: 01/20/2017] [Indexed: 06/07/2023]
Abstract
Ultrasound is considered as a potential novel technique for improving the quality of some wines. In this paper, a model wine firstly was constructed with the standards of (-)-epicatechin gallate (ECG) and bovine serum albumin (BSA) as target compounds. Then, the experiments were conducted to investigate the effect of ultrasonic irradiation on the binding properties between ECG and BSA including quenching mechanism, binding parameters, binding forces, energy transfer distance and conformational changes determined by spectral analysis. The results indicate that ultrasound definitely has some regular effects on the binding interaction of BSA and ECG, and can induced the conformation variation of BSA in the simulated wine, which may suggest that the ultrasound might be employed to modify the wine organoleptic property by regulating the interaction between phenolic compounds and proteins from the autolysis of yeasts, since they are similar to the standards of ECG and BSA, respectively.
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Affiliation(s)
- Qing-An Zhang
- Lab. of Food & Physical Field Processing, School of Food Engineering and Nutrition Science, Shaanxi Normal University, Xi'an, 710119 Shaanxi Province, PR China.
| | - Xi-Zhe Fu
- Lab. of Food & Physical Field Processing, School of Food Engineering and Nutrition Science, Shaanxi Normal University, Xi'an, 710119 Shaanxi Province, PR China
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Mitra AK, Sau A, Pal U, Saha C, Basu S. Constrained Photophysics of 5,7-dimethoxy-2,3,4,9-tetrahydro-1H-carbazol-1-one in the Bioenvironment of Serum Albumins: A Spectroscopic Endeavour Supported by Molecular Docking Analysis. J Fluoresc 2017; 27:1547-1558. [PMID: 28434063 DOI: 10.1007/s10895-017-2094-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 04/04/2017] [Indexed: 11/27/2022]
Abstract
This paper vividly indicates that steady state as well as time-resolved fluorescence techniques can serve as highly sensitive monitors to explore the interactions of 5,7-dimethoxy-2,3,4,9-tetrahydro-1H-carbazol-1-one with model transport proteins, bovine serum albumin (BSA) and human serum albumin (HSA). Besides these, we have used fluorescence anisotropy study to assess the degree of restrictions imparted by the micro-environments of serum albumins. Again, to speculate the triplet excited state interaction between such fluorophore and albumin proteins (BSA& HSA), laser flash-photolysis experiments have been carried out. Molecular docking experiments have also been performed to support the conclusions obtained from steady state experiments.
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Affiliation(s)
- Amrit Krishna Mitra
- Department of Chemistry, Government General Degree College, Singur, Hooghly, West Bengal, Pin:712409, India
| | - Abhishek Sau
- Chemical Sciences Division, Saha Institute of Nuclear Physics, Kolkata, 700064, India
| | - Uttam Pal
- Chemical Sciences Division, Saha Institute of Nuclear Physics, Kolkata, 700064, India
| | - Chandan Saha
- Department of Clinical and Experimental Pharmacology, School of Tropical Medicine, Kolkata, 700073, India
| | - Samita Basu
- Chemical Sciences Division, Saha Institute of Nuclear Physics, Kolkata, 700064, India.
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Tian Z, Zhao L, Dong H, Zhang Y, Zhang Y, Ren Q, Shao S, Huang Y, Song L, Guo T, Xu X, Wang C. Study on the interaction of anthracenyl-methyl homospermidine conjugate (ANTMHspd) with DNA by spectroscopic methods. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 169:27-34. [DOI: 10.1016/j.jphotobiol.2017.02.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 02/21/2017] [Indexed: 11/16/2022]
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Lin T, Hou B, Wang J, Xu Y, Chen W. Characterization of interaction between amino acids and fulvic-like organic matter by fluorescence spectroscopy combining thermodynamic calculation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:7226-7235. [PMID: 28101708 DOI: 10.1007/s11356-017-8444-4] [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: 08/12/2016] [Accepted: 01/10/2017] [Indexed: 06/06/2023]
Abstract
Dissolved organic matter (DOM), as a very fine colloidal suspension, could inevitably affect the transformation process of dissolved organic nitrogen (DON) in drinking water treatment. Tryptophan and tyrosine were used as representatives of DON to investigate the interactions between amino acids and fulvic-like components of fluorescent DOM using titration experiments. The fluorescence intensity decreased significantly with the increasing fulvic acid (FA) concentration, suggesting that FA could greatly quench the intrinsic fluorescence of amino acids such as tryptophan and tyrosine. The absolute spectrum peaks of amino acids (AA) were changed in the presence of FA, possibly being resulted from non-covalent interactions between amino acids and FA. The specific hydrogen bonding and van der Waals forces played dominant roles in the interactions according to the results of theoretical analysis and thermodynamic calculation. The distance between donor and acceptor was 1.25 and 1.14 nm for the FA-tyrosine and FA-tryptophan system, indicating the energy transfer from tyrosine or tryptophan to FA. The association constant (K) decreased with the increase of temperature and pH value, while the change of ionic strength had no obvious influence on K value.
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Affiliation(s)
- Tao Lin
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing, 210098, People's Republic of China.
- College of Environment, Hohai University, Nanjing, 210098, People's Republic of China.
| | - Bingwei Hou
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing, 210098, People's Republic of China
- College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Jian Wang
- Yixing Water Group, Xiying, 214221, People's Republic of China
| | - Yaqun Xu
- Yixing Water Group, Xiying, 214221, People's Republic of China
| | - Wei Chen
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing, 210098, People's Republic of China
- College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
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36
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Guo M, Lu X, Wang Y, Brodelius PE. Comparison of the interaction between lactoferrin and isomeric drugs. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 173:593-607. [PMID: 27776314 DOI: 10.1016/j.saa.2016.10.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 10/04/2016] [Accepted: 10/17/2016] [Indexed: 06/06/2023]
Abstract
The binding properties of pentacyclic triterpenoid isomeric drugs, i.e. ursolic acid (UA) and oleanolic acid (OA), to bovine lactoferrin (BLF) have been studied by molecule modeling, fluorescence spectroscopy, UV-visible absorbance spectroscopy and infrared spectroscopy (IR). Molecular docking, performed to reveal the possible binding mode or mechanism, suggested that hydrophobic interaction and hydrogen bonding play important roles to stabilize the complex. The results of spectroscopic measurements showed that the two isomeric drugs both strongly quenched the intrinsic fluorescence of BLF through a static quenching procedure although some differences between UA and OA binding strength and non-radiation energy transfer occurred within the molecules. The number of binding sites was 3.44 and 3.10 for UA and OA, respectively, and the efficiency of Förster energy transfer provided a distance of 0.77 and 1.21nm for UA and OA, respectively. The conformation transformation of BLF affected by the drugs conformed to the "all-or-none" pattern. In addition, the changes of the ratios of α-helices, β-sheets and β-turns of BLF during the process of the interaction were obtained. The results of the experiments in combination with the calculations showed that there are two modes of pentacyclic triterpenoid binding to BLF instead of one binding mode only governed by the principle of the lowest bonding energy.
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Affiliation(s)
- Ming Guo
- Department of Chemistry, Zhejiang Agricultural & Forestry University, Lin'an 311300, Zhejiang, China.
| | - Xiaowang Lu
- Department of Chemistry, Zhejiang Agricultural & Forestry University, Lin'an 311300, Zhejiang, China
| | - Yan Wang
- Department of Chemistry, Zhejiang Agricultural & Forestry University, Lin'an 311300, Zhejiang, China
| | - Peter E Brodelius
- Department of Chemistry and Biomedical Sciences, Linnaeus University, 391 82 Kalmar, Sweden.
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37
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Chaves OA, da Silva VA, Sant'Anna CMR, Ferreira AB, Ribeiro TAN, de Carvalho MG, Cesarin-Sobrinho D, Netto-Ferreira JC. Binding studies of lophirone B with bovine serum albumin (BSA): Combination of spectroscopic and molecular docking techniques. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.09.036] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Chandel TI, Rabbani G, Khan M, Zaman M, Alam P, E. Shahein Y, Hasan Khan R. Binding of anti-cardiovascular drug to serum albumin: an insight in the light of spectroscopic and computational approaches. J Biomol Struct Dyn 2016; 36:54-67. [DOI: 10.1080/07391102.2016.1266968] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Tajalli Ilm Chandel
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Gulam Rabbani
- School of Medical Biotechnology, YeungNam University, Gyeongsan, Republic of Korea
| | - MohsinVahid Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Masihuz Zaman
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Parvez Alam
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Yasser E. Shahein
- Molecular Biology Department, Genetic Engineering Division, National Research Centre, Cairo, Egypt
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
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39
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Chaves OA, Jesus CSH, Cruz PF, Sant'Anna CMR, Brito RMM, Serpa C. Evaluation by fluorescence, STD-NMR, docking and semi-empirical calculations of the o-NBA photo-acid interaction with BSA. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 169:175-181. [PMID: 27376757 DOI: 10.1016/j.saa.2016.06.028] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 06/03/2016] [Accepted: 06/17/2016] [Indexed: 06/06/2023]
Abstract
Serum albumins present reversible pH dependent conformational transitions. A sudden laser induced pH-jump is a methodology that can provide new insights on localized protein (un)folding processes that occur within the nanosecond to microsecond time scale. To generate the fast pH jump needed to fast-trigger a protein conformational event, a photo-triggered acid generator as o-nitrobenzaldehyde (o-NBA) can be conveniently used. In order to detect potential specific or nonspecific interactions between o-NBA and BSA, we have performed ligand-binding studies using fluorescence spectroscopy, saturation transfer difference (STD) NMR, molecular docking and semi-empirical calculations. Fluorescence quenching indicates the formation of a non-fluorescent complex in the ground-state between the fluorophore and the quencher, but o-NBA does not bind much effectively to the protein (Ka~4.34×10(3)M(-1)) and thus can be considered a relatively weak binder. The corresponding thermodynamic parameters: ΔG°, ΔS° and ΔH° showed that the binding process is spontaneous and entropy driven. Results of (1)H STD-NMR confirm that the photo-acid and BSA interact, and the relative intensities of the signals in the STD spectra show that all o-NBA protons are equally involved in the binding process, which should correspond to a nonspecific interaction. Molecular docking and semi-empirical calculations suggest that the o-NBA binds preferentially to the Trp-212-containing site of BSA (FA7), interacting via hydrogen bonds with Arg-217 and Tyr-149 residues.
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Affiliation(s)
- Otávio A Chaves
- Departament of Chemistry, Universidade Federal Rural do Rio de Janeiro, BR 465, km 47, 23890-000 Seropédica, RJ, Brazil; CQC, Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Catarina S H Jesus
- CQC, Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal; Center for Neuroscience and Cell Biology, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Pedro F Cruz
- CQC, Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Carlos M R Sant'Anna
- Departament of Chemistry, Universidade Federal Rural do Rio de Janeiro, BR 465, km 47, 23890-000 Seropédica, RJ, Brazil
| | - Rui M M Brito
- Departament of Chemistry, Universidade Federal Rural do Rio de Janeiro, BR 465, km 47, 23890-000 Seropédica, RJ, Brazil; CQC, Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Carlos Serpa
- CQC, Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal.
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Buddanavar AT, Nandibewoor ST. Multi-spectroscopic characterization of bovine serum albumin upon interaction with atomoxetine. J Pharm Anal 2016; 7:148-155. [PMID: 29404031 PMCID: PMC5790691 DOI: 10.1016/j.jpha.2016.10.001] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 10/07/2016] [Accepted: 10/14/2016] [Indexed: 01/16/2023] Open
Abstract
The quenching interaction of atomoxetine (ATX) with bovine serum albumin (BSA) was studied in vitro under optimal physiological condition (pH=7.4) by multi-spectroscopic techniques. The mechanism of ATX-BSA system was a dynamic quenching process and was confirmed by the fluorescence spectra and lifetime measurements. The number of binding sites, binding constants and other binding characteristics were computed. Thermodynamic parameters ∆H° and ∆S° indicated that intermolecular hydrophobic forces predominantly stabilized the drug-protein system. The average binding distance between BSA and ATX was studied by Försters theory. UV-absorption, Fourier transform infrared spectroscopy (FT-IR), circular dichroism (CD), synchronous spectra and three-dimensional (3D) fluorescence spectral results revealed the changes in micro-environment of secondary structure of protein upon the interaction with ATX. Displacement of site probes and the effects of some common metal ions on the binding of ATX with BSA interaction were also studied.
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41
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Inci D, Aydin R, Zorlu Y. Affinity of a new copper(II) complex to DNA/BSA and antioxidant/radical scavenging activities: crystal structure of [Cu(4,7-diphenyl-1,10-phenanthroline)(leucine)(NO3)(H2O)]. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1213390] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Duygu Inci
- Faculty of Arts and Sciences, Department of Chemistry, Uludag University, Bursa, Turkey
| | - Rahmiye Aydin
- Faculty of Arts and Sciences, Department of Chemistry, Uludag University, Bursa, Turkey
| | - Yunus Zorlu
- Department of Chemistry, Gebze Technical University, Gebze, Turkey
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42
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Lin D, Fei X, Li R, Gu Y, Tang Y, Zhou J, Zhang B. A large stokes-shifted fluorescent dye synthesized as a new probe for the determination of protein. J Fluoresc 2016; 26:1511-20. [PMID: 27307022 DOI: 10.1007/s10895-016-1851-y] [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: 03/01/2016] [Accepted: 05/30/2016] [Indexed: 10/21/2022]
Abstract
A novel fluorescent dye, 1-(2-hydroxyethyl)-4-((E)-2-(3-benzothiazol-2yl-9-ethyl-carbazole-3yl)vinyl) pyridinium bromide, was synthesized for determination of protein and its structure was characterized by (1)H NMR. Photophysics of the new probe in different solvents has been delineated in this paper, the new fluorescent molecular dye exhibited a large stokes-shifted and fluorescence quantum yields in organic solvent. The photostability and thermostability of the new dye were also studied and the results suggested the stable was excellent. The interactions of the dye with bovine serum albumin (BSA) , Human serumal bumin (HSA) and calf thymus deoxyribonucleic acid (ctDNA) were studied by fluorescence and absorption spectroscopy. The binding constant for BSA, HSA and DNA were calculated to be 8.91 × 10(7), 1.86 × 10(6) and 2.9 × 10(4), respectively. The experimental results indicated a potential value of the new dye for biomarker.
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Affiliation(s)
- Dayong Lin
- School of Envirnmental Science and Engineering, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, 300072, China
| | - Xuening Fei
- School of Envirnmental Science and Engineering, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, 300072, China. .,School of Science, Tianjin Chengjian University, No.26 Jinjing Road, Xiqing District, Tianjin, 300384, China.
| | - Ran Li
- School of Science, Tianjin Chengjian University, No.26 Jinjing Road, Xiqing District, Tianjin, 300384, China
| | - Yingchun Gu
- School of Science, Tianjin Chengjian University, No.26 Jinjing Road, Xiqing District, Tianjin, 300384, China. .,Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Zhongguancun North First Street 2, Beijing, 100190, China.
| | - Yalin Tang
- Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Zhongguancun North First Street 2, Beijing, 100190, China.
| | - Jianguo Zhou
- School of Science, Tianjin Chengjian University, No.26 Jinjing Road, Xiqing District, Tianjin, 300384, China
| | - Baolian Zhang
- School of Science, Tianjin Chengjian University, No.26 Jinjing Road, Xiqing District, Tianjin, 300384, China
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43
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Sudha A, Srinivasan P, Thamilarasan V, Sengottuvelan N. Exploring the binding mechanism of 5-hydroxy-3',4',7-trimethoxyflavone with bovine serum albumin: Spectroscopic and computational approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 157:170-181. [PMID: 26773261 DOI: 10.1016/j.saa.2015.12.028] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 12/16/2015] [Accepted: 12/20/2015] [Indexed: 06/05/2023]
Abstract
The current study was carried out to investigate the binding mechanism of a potential flavonoid compound 5-hydroxy-3',4',7-trimethoxyflavone (HTMF) with bovine serum albumin (BSA) using ultraviolet-visible, fluorescence, circular dichroism (CD) spectral measurements along with molecular docking and molecular dynamics (MD) simulation. It was confirmed from fluorescence spectra that the intrinsic fluorescence of BSA was robustly quenched by HTMF through a static quenching mechanism. The number of binding sites (n) for HTMF binding on BSA was found to be about one. The thermodynamic parameters estimated from the van't Hoff plot specified that hydrophobic force was the predominant force in the HTMF-BSA complex and there also exist hydrogen bonds and electrostatic interactions. The effect of HTMF on the BSA conformation examined using CD studies revealed that there is a decrease in the helical content of BSA upon HTMF interaction. The results of molecular docking study shed light on the binding mode which exposed that HTMF bind within the hydrophobic pocket of the subdomain IIIA of BSA. The stability of HTMF-BSA complex with respect to free protein was analyzed from the molecular dynamic studies. The electronic structure analysis of HTMF was achieved by using density functional theory (DFT) calculations at B3LYP/6-31G** level to support its antioxidant role. The results of computational analysis are in good consistence with the experimental data and the present findings suggested that HTMF exhibits a good binding propensity to BSA protein which will be helpful for the drug design.
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Affiliation(s)
- A Sudha
- Department of Bioinformatics, Alagappa University, Karaikudi 630 004, India
| | - P Srinivasan
- Department of Bioinformatics, Alagappa University, Karaikudi 630 004, India; Department of Animal Health and Management, Alagappa University, Karaikudi 630 004, India.
| | - V Thamilarasan
- Department of Industrial Chemistry, Alagappa University, Karaikudi 630 003, India
| | - N Sengottuvelan
- Department of Chemistry, Directorate of Distance Education, Alagappa University, Karaikudi 630 004, India
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Tian Z, Huang Y, Zhang Y, Song L, Qiao Y, Xu X, Wang C. Spectroscopic and molecular modeling methods to study the interaction between naphthalimide-polyamine conjugates and DNA. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 158:1-15. [PMID: 26926663 DOI: 10.1016/j.jphotobiol.2016.01.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 01/29/2016] [Indexed: 11/28/2022]
Abstract
The effect of polyamine side chains on the interaction between naphthalimide-polyamine conjugates (1-7) and herring sperm DNA was studied by UV/vis absorption and fluorescent spectra under physiological conditions (pH=7.4). The diverse spectral data and further molecular docking simulation in silico indicated that the aromatic moiety of these compounds could intercalate into the DNA base pairs while the polyamine motif might simultaneously locate in the minor groove. The triamine compound 7 can interact more potently with DNA than the corresponding diamine compounds (1-6). The presence of the bulky terminal group in the diamine side chain reduced the binding strength of compound 1 with DNA, compared to other diamine compounds (2-6). In addition, the increasing methylene number in the diamine backbone generally results in the elevated binding constant of compounds-DNA complex. The fluorescent tests at different temperature revealed that the quenching mechanism was a static type. The binding constant and thermodynamic parameter showed that the binding strength and the type of interaction force, associated with the side chains, were mainly hydrogen bonding and hydrophobic force. And the calculated free binding energies of molecular docking are generally consistent with the stability of polyamine-DNA complexes. The circular dichroism assay about the impact of compounds 1-7 on DNA conformation testified the B to A-like conformational change.
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Affiliation(s)
- Zhiyong Tian
- Institute of Chemical Biology, Henan University, Kaifeng 475004, China
| | - Yingying Huang
- Institute of Chemical Biology, Henan University, Kaifeng 475004, China
| | - Yan Zhang
- Institute of Chemical Biology, Henan University, Kaifeng 475004, China
| | - Lina Song
- Institute of Chemical Biology, Henan University, Kaifeng 475004, China
| | - Yan Qiao
- Basic Medical College, Zhengzhou University, Zhengzhou, 475008, China; State Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Xuejun Xu
- Basic Medical College, Zhengzhou University, Zhengzhou, 475008, China; The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, china.
| | - Chaojie Wang
- The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, china.
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45
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Awasthi S, Saraswathi NT. Non-enzymatic glycation mediated structure–function changes in proteins: case of serum albumin. RSC Adv 2016. [DOI: 10.1039/c6ra08283a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Albumin, a major plasma protein with extraordinary ligand binding properties, transports various ligands ranging from drugs, hormones, fatty acids, and toxins to different tissues and organs in the body.
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Affiliation(s)
- Saurabh Awasthi
- Molecular Biophysics Lab
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613401
- India
| | - N. T. Saraswathi
- Molecular Biophysics Lab
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613401
- India
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46
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Awasthi S, Saraswathi N. Elucidating the molecular interaction of sinigrin, a potent anticancer glucosinolate from cruciferous vegetables with bovine serum albumin: effect of methylglyoxal modification. J Biomol Struct Dyn 2015; 34:2224-32. [DOI: 10.1080/07391102.2015.1110835] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Saurabh Awasthi
- Molecular Biophysics Lab, School of Chemical and Biotechnology, SASTRA University, Thanjavur 613401, Tamilnadu, India
| | - N.T. Saraswathi
- Molecular Biophysics Lab, School of Chemical and Biotechnology, SASTRA University, Thanjavur 613401, Tamilnadu, India
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Durgannavar AK, Patgar MB, Nandibewoor ST, Chimatadar SA. Fluorescent bovine serum albumin interacting with the antitussive quencher dextromethorphan: a spectroscopic insight. LUMINESCENCE 2015; 31:843-50. [DOI: 10.1002/bio.3040] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 07/28/2015] [Accepted: 08/19/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Amar K. Durgannavar
- P. G. Department of Studies in Chemistry; Karnatak University; Dharwad India
| | - Manjanath B. Patgar
- P. G. Department of Studies in Chemistry; Karnatak University; Dharwad India
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48
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Spectroscopic Study on the Interaction between Naphthalimide-Polyamine Conjugates and Bovine Serum Albumin (BSA). Molecules 2015; 20:16491-523. [PMID: 26378511 PMCID: PMC6332075 DOI: 10.3390/molecules200916491] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 08/14/2015] [Accepted: 08/14/2015] [Indexed: 01/04/2023] Open
Abstract
The effect of a naphthalimide pharmacophore coupled with diverse substituents on the interaction between naphthalimide-polyamine conjugates 1–4 and bovine serum albumin (BSA) was studied by UV absorption, fluorescence and circular dichroism (CD) spectroscopy under physiological conditions (pH = 7.4). The observed spectral quenching of BSA by the compounds indicated that they could bind to BSA. Furthermore, caloric fluorescent tests revealed that the quenching mechanisms of compounds 1–3 were basically static type, but that of compound 4 was closer to a classical type. The Ksv values at room temperature for compound-BSA complexes-1-BSA, 2-BSA, 3-BSA and 4-BSA were 1.438 × 104, 3.190 × 104, 5.700 × 104 and 4.745 × 105, respectively, compared with the value of MINS, 2.863 × 104 at Ex = 280 nm. The obtained quenching constant, binding constant and thermodynamic parameter suggested that the binding between compounds 1–4 with BSA protein, significantly affected by the substituted groups on the naphthalene backbone, was formed by hydrogen bonds, and other principle forces mainly consisting of charged and hydrophobic interactions. Based on results from the analysis of synchronous three-dimensional fluorescence and CD spectra, we can conclude that the interaction between compounds 1–4 and BSA protein has little impact on the BSA conformation. Calculated results obtained from in silico molecular simulation showed that compound 1 did not prefer either enzymatic drug sites I or II over the other. However, DSII in BSA was more beneficial than DSI for the binding between compounds 2–4 and BSA protein. The binding between compounds 1–3 and BSA was hydrophobic in nature, compared with the electrostatic interaction between compound 4 and BSA.
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49
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Gu Y, Lin D, Li R, Tang Y, Fei X, Zhou J. Spectra, stability and labeling of 1-(5-carboxypentyl)-4-(2-(N-ethyl-carbazole-3-yl) vinyl) pyridinium bromide with a large Stokes shift. LUMINESCENCE 2015; 31:380-387. [PMID: 26249113 DOI: 10.1002/bio.2970] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Revised: 06/12/2015] [Accepted: 06/15/2015] [Indexed: 12/31/2022]
Abstract
Carbazole and its derivatives have been widely utilized as a functional building block in the fabrication of the organic medicine, pesticides, materials, etc., because of their excellent solubility, stability and biological activity. In this paper, 1-(5-carboxypentyl)-4-(2-(N-ethyl-carbazole-3-yl) vinyl) pyridinium bromide with a large Stokes shift was synthesized and characterized by (1)H NMR and MS. The UV/vis absorption and fluorescence spectra in different solvents and at different pH values were investigated preliminarily. The photostability and thermostability were also studied and the results showed that the compound was stable. The compound was also used to label bovine serum albumin (BSA) and calf thymus (ct)DNA. The results showed that the fluorescence intensity is enhanced when labeling with BSA and the binding ability is stronger than ctDNA, making it may be used as a biological probe.
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Affiliation(s)
- Yingchun Gu
- School of Science, Tianjin Chengjian University, Tianjin, 300384, People's Republic of China.,Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Dayong Lin
- School of Envirnmental Science and Engineering, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Ran Li
- School of Science, Tianjin Chengjian University, Tianjin, 300384, People's Republic of China
| | - Yalin Tang
- Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Xuening Fei
- School of Science, Tianjin Chengjian University, Tianjin, 300384, People's Republic of China.,School of Envirnmental Science and Engineering, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Jianguo Zhou
- School of Science, Tianjin Chengjian University, Tianjin, 300384, People's Republic of China
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Zhan M, Guo M, Jiang Y, Wang X. Characterization of the Interaction between Gallic Acid and Lysozyme by Molecular Dynamics Simulation and Optical Spectroscopy. Int J Mol Sci 2015; 16:14786-807. [PMID: 26140374 PMCID: PMC4519872 DOI: 10.3390/ijms160714786] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 06/08/2015] [Accepted: 06/17/2015] [Indexed: 01/29/2023] Open
Abstract
The binding interaction between gallic acid (GA) and lysozyme (LYS) was investigated and compared by molecular dynamics (MD) simulation and spectral techniques. The results from spectroscopy indicate that GA binds to LYS to generate a static complex. The binding constants and thermodynamic parameters were calculated. MD simulation revealed that the main driving forces for GA binding to LYS are hydrogen bonding and hydrophobic interactions. The root-mean-square deviation verified that GA and LYS bind to form a stable complex, while the root-mean-square fluctuation results showed that the stability of the GA-LYS complex at 298 K was higher than that at 310 K. The calculated free binding energies from the molecular mechanics/Poisson-Boltzmann surface area method showed that van der Waals forces and electrostatic interactions are the predominant intermolecular forces. The MD simulation was consistent with the spectral experiments. This study provides a reference for future study of the pharmacological mechanism of GA.
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Affiliation(s)
- Minzhong Zhan
- School of Science, Zhejiang Agricultural & Forestry University, Lin'an 311300, China.
| | - Ming Guo
- School of Science, Zhejiang Agricultural & Forestry University, Lin'an 311300, China.
| | - Yanke Jiang
- Research Center of Medical Chemistry & Chemical Biology, Chongqing Technology and Business University, Chongqing 400067, China.
| | - Xiaomeng Wang
- School of Science, Zhejiang Agricultural & Forestry University, Lin'an 311300, China.
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