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Zheng Q, Xie J, Xiao J, Cao Y, Liu X. Unraveling the underlying mechanism of interactions between astaxanthin geometrical isomers and bovine serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123731. [PMID: 38064963 DOI: 10.1016/j.saa.2023.123731] [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: 08/22/2023] [Revised: 11/30/2023] [Accepted: 12/01/2023] [Indexed: 01/13/2024]
Abstract
The health benefits of astaxanthin (AST) are related to its geometric isomers. Generally, functional activity is realized by the interactions between active substances and transporters. Hereto, bovine serum albumin (BSA), as a model-binding protein and transporter, is able to recognize and transport isomers of active substances through binding with them. However, differences in the binding mechanism of isomers to BSA may affect the functional activities of isomers through the "binding-transport-activity" chain reaction. Thus, this study sought to elucidate the interactions between AST geometrical isomers and BSA using multi-spectroscopy, surface plasmon resonance and molecular docking. The results showed that Z-AST displayed more interacting amino acid residues and lower thermodynamic parameters than all-E-AST. Meanwhile, the order of binding affinity to BSA was 13Z-AST (1.56 × 10-7 M) > 9Z-AST (2.70 × 10-7 M) > all-E-AST (4.01 × 10-7 M), indicating that Z-AST possessed stronger binding ability to BSA. Moreover, AST isomers were located at the junction between subdomains ⅡA and ⅢA of BSA, and showed the same interaction forces (hydrogen bond and van der Waals force) as well as kinetic processes (slow combination, slow dissociation). These interaction parameters provide valuable insights into their pharmacokinetics in vivo, and it was of great significance to explain the potential differences among AST isomers in functional activities.
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Affiliation(s)
- Qinsheng Zheng
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Junting Xie
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Jie Xiao
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Yong Cao
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Xiaojuan Liu
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China.
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Chen W, Mao Y, Zhu X, Zhang Y, Wan L. Metamifop on Kilogram Scale. ORG PREP PROCED INT 2020. [DOI: 10.1080/00304948.2020.1796157] [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]
Affiliation(s)
- Wenxin Chen
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
| | - Yongjun Mao
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
| | - Xiaolei Zhu
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
| | - Yurong Zhang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
| | - Lingzi Wan
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
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Wang W, Gan N, Sun Q, Wu D, Zhao L, Suo Z, Tang P, Li H. Binding properties of sodium glucose co-transporter-2 inhibitor empagliflozin to human serum albumin: spectroscopic methods and computer simulations. J Biomol Struct Dyn 2019; 38:3178-3187. [PMID: 31378154 DOI: 10.1080/07391102.2019.1652688] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Empagliflozin is an oral sodium glucose co-transporter-2 inhibitor for type 2 diabetes mellitus. The interaction between empagliflozin and human serum albumin (HSA) was investigated experimentally and theoretically. Fluorescence quenching and time-resolved fluorescence spectroscopy indicated that the quenching mechanism of empagliflozin and HSA was dynamic and that the effective binding constant at body temperature was 3.495 × 103 M-1. Thermodynamic parameters showed that hydrophobic forces were the major binding force in the interaction between empagliflozin and HSA. Circular dichroism, Fourier transform infrared, and 3 D fluorescence spectroscopy revealed that empagliflozin showed a slight change in secondary structure without changing the basic carbon framework of HSA. Site marker displacement experiments revealed that empagliflozin bound to site I of HSA, which was supported by molecular docking. Molecular dynamic simulations indicated that empagliflozin could bind to HSA stably. This study provided insights into the binding mechanism between empagliflozin and HSA.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Wenjing Wang
- School of Chemical Engineering, Sichuan University, Chengdu, China
| | - Na Gan
- School of Chemical Engineering, Sichuan University, Chengdu, China
| | - Qiaomei Sun
- School of Chemical Engineering, Sichuan University, Chengdu, China
| | - Di Wu
- Key Laboratory of Meat Processing of Sichuan, College of Pharmacy and Biological Engineering, Chengdu University, Chengdu, China
| | - Ludan Zhao
- School of Chemical Engineering, Sichuan University, Chengdu, China
| | - Zili Suo
- School of Chemical Engineering, Sichuan University, Chengdu, China
| | - Peixiao Tang
- School of Chemical Engineering, Sichuan University, Chengdu, China
| | - Hui Li
- School of Chemical Engineering, Sichuan University, Chengdu, China
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Wang W, Gan N, Sun Q, Wu D, Gan R, Zhang M, Tang P, Li H. Study on the interaction of ertugliflozin with human serum albumin in vitro by multispectroscopic methods, molecular docking, and molecular dynamics simulation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 219:83-90. [PMID: 31030051 DOI: 10.1016/j.saa.2019.04.047] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/15/2019] [Accepted: 04/17/2019] [Indexed: 06/09/2023]
Abstract
Ertugliflozin is a potent and selective inhibitor of sodium-dependent glucose cotransporters 2 (SGLT2) and used as a monotherapy to improve glycemic control in adult patients with type 2 diabetes. In this study, ertugliflozin binding to human serum albumin (HSA) was investigated by multispectroscopic and computer simulations. The fluorescence spectra demonstrated that the quenching mechanism of ertugliflozin and HSA was static quenching. Thermodynamic parameters indicated that hydrogen bonding and van der Waals forces played a key role in the binding. Fluorescence competition experiments and molecular docking revealed that ertugliflozin bound to HSA sites II. In three-dimensional fluorescence, circular dichroism spectroscopy, and molecular dynamics simulation, ertugliflozin did not affect the basic skeleton structure of HSA but slightly increased the α-helical structure content and changed the microenvironment around amino acid residues. Results provide valuable information on the basis of the interaction of ertugliflozin with HSA.
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Affiliation(s)
- Wenjing Wang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Na Gan
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Qiaomei Sun
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Di Wu
- Key Laboratory of Meat Processing of Sichuan, College of Pharmacy and Biological Engineering, Chengdu University, Chengdu 610106, China.
| | - Ruixue Gan
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Man Zhang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Peixiao Tang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Hui Li
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
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Yang H, Huang Y, Liu J, Tang P, Sun Q, Xiong X, Tang B, He J, Li H. Binding modes of environmental endocrine disruptors to human serum albumin: insights from STD-NMR, ITC, spectroscopic and molecular docking studies. Sci Rep 2017; 7:11126. [PMID: 28894220 PMCID: PMC5593971 DOI: 10.1038/s41598-017-11604-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 08/29/2017] [Indexed: 12/17/2022] Open
Abstract
Given that bisphenols have an endocrine-disrupting effect on human bodies, thoroughly exposing their potential effects at the molecular level is important. Saturation transfer difference (STD) NMR-based binding studies were performed to investigate the binding potential of two bisphenol representatives, namely, bisphenol B (BPB) and bisphenol E (BPE), toward human serum albumin (HSA). The relative STD (%) suggested that BPB and BPE show similar binding modes and orientations, in which the phenolic rings were spatially close to HSA binding site. ITC analysis results showed that BPB and BPE were bound to HSA with moderately strong binding affinity through electrostatic interactions and hydrogen bonds. The order of binding affinity of HSA for two test bisphenols is as follows: BPE > BPB. The results of fluorescence competitive experiments using 5-dimethylaminonaphthalene-1-sulfonamide and dansylsarcosine as competitors, combined with molecular docking indicated that both bisphenols are prone to attach to the binding site II in HSA. Spectroscopic results (FT-IR, CD, synchronous and 3D fluorescence spectra) showed that BPB/BPE induces different degrees of microenvironmental and conformational changes to HSA.
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Affiliation(s)
- Hongqin Yang
- College of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Yanmei Huang
- College of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Jiuyang Liu
- School of Life Sciences, University of Science and Technology of China, Hefei, 230026, China
| | - Peixiao Tang
- College of Chemical Engineering, Sichuan University, Chengdu, 610065, China.
| | - Qiaomei Sun
- College of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Xinnuo Xiong
- College of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Bin Tang
- College of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Jiawei He
- College of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Hui Li
- College of Chemical Engineering, Sichuan University, Chengdu, 610065, China.
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Study of conformational changes in serum albumin by binding of chlorfenvinphos using multispectroscopic techniques and molecular dynamic simulation. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-016-1814-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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7
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Scriba GKE. Chiral recognition in separation science - an update. J Chromatogr A 2016; 1467:56-78. [PMID: 27318504 DOI: 10.1016/j.chroma.2016.05.061] [Citation(s) in RCA: 182] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 05/17/2016] [Accepted: 05/19/2016] [Indexed: 12/26/2022]
Abstract
Stereospecific recognition of chiral molecules is an important issue in various aspects of life sciences and chemistry including analytical separation sciences. The basis of analytical enantioseparations is the formation of transient diastereomeric complexes driven by hydrogen bonds or ionic, ion-dipole, dipole-dipole, van der Waals as well as π-π interactions. Recently, halogen bonding was also described to contribute to selector-selectand complexation. Besides structure-separation relationships, spectroscopic techniques, especially NMR spectroscopy, as well as X-ray crystallography have contributed to the understanding of the structure of the diastereomeric complexes. Molecular modeling has provided the tool for the visualization of the structures. The present review highlights recent contributions to the understanding of the binding mechanism between chiral selectors and selectands in analytical enantioseparations dating between 2012 and early 2016 including polysaccharide derivatives, cyclodextrins, cyclofructans, macrocyclic glycopeptides, proteins, brush-type selectors, ion-exchangers, polymers, crown ethers, ligand-exchangers, molecular micelles, ionic liquids, metal-organic frameworks and nucleotide-derived selectors. A systematic compilation of all published literature on the various chiral selectors has not been attempted.
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Affiliation(s)
- Gerhard K E Scriba
- Friedrich Schiller University Jena, Department of Pharmaceutical/Medicinal Chemistry, Philosophenweg 14, 07743 Jena, Germany.
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Yang H, Huang Y, Wu D, Yan J, He J, Li H. In vitro investigation of the interaction between the hepatitis C virus drug sofosbuvir and human serum albumin through 1H NMR, molecular docking, and spectroscopic analyses. NEW J CHEM 2016. [DOI: 10.1039/c5nj02003d] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The qualitative and quantitative investigation of sofosbuvir and HSA interaction provides a convictive explanation for its binding mechanism.
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Affiliation(s)
- Hongqin Yang
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Yanmei Huang
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Di Wu
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Jin Yan
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Jiawei He
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Hui Li
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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Zhang P, Zhu W, Qiu J, Wang D, Wang X, Wang Y, Zhou Z. Evaluating the enantioselective degradation and novel metabolites following a single oral dose of metalaxyl in mice. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2014; 116:32-39. [PMID: 25454518 DOI: 10.1016/j.pestbp.2014.09.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 09/16/2014] [Accepted: 09/17/2014] [Indexed: 06/04/2023]
Abstract
Metalaxyl [N-(2,6-dimethylphenyl)-N-(methoxyacetyl)-D,L-alaninemethylester] is a systemic fungicide widely used in agriculture. In this study, the enantioselective distribution, degradation and excretion of metalaxyl were investigated after oral gavage administration of rac-metalaxyl to mice. Concentration of metalaxyl and its enantiomers was determined by HPLC-MS/MS. The results showed that R-metalaxyl was much higher than S-metalaxyl in heart, liver, lung, urine and feces. As for the strong first pass effect, concentrations of metalaxyl in liver were much higher than those in other tissues. The total body clearance (CL) of metalaxyl in mice was 1.77 L h(-1 )kg(-1) and degradation half-lives of (t1/2) of S-metalaxyl and R-metalaxyl in liver were 2.2 h and 3.0 h, respectively. Such results indicated the enantioselectivity of metalaxyl lies in distribution, degradation and excretion processes in mice. Main metabolites were also determined and biotransformation reactions were hydroxylation, demethylation and didemethylation. Furthermore, metabolite concentrations in urine and feces were much higher than those in tissues. These results may have potential implications to predict toxicity and provide additional information associated with adverse health effects for risk assessment of metalaxyl.
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Affiliation(s)
- Ping Zhang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Wentao Zhu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Jing Qiu
- Institute of Quality Standards & Testing Technology for Agro-Products, Key Laboratory of Agro-Product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Dezhen Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Xinru Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Yao Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Zhiqiang Zhou
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China.
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Chai T, Yang W, Qiu J, Hou S. Direct Enantioseparation of Nitrogen-Heterocyclic Pesticides on Cellulose-Based Chiral Column by High-Performance Liquid Chromatography. Chirality 2014; 27:32-8. [DOI: 10.1002/chir.22385] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 08/10/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Tingting Chai
- College of Science; China Agricultural University; Beijing China
- Institute of Quality Standards & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety; Chinese Academy of Agricultural Sciences; Beijing China
| | - Wenwen Yang
- College of Science; China Agricultural University; Beijing China
- Institute of Quality Standards & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety; Chinese Academy of Agricultural Sciences; Beijing China
| | - Jing Qiu
- Institute of Quality Standards & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety; Chinese Academy of Agricultural Sciences; Beijing China
| | - Shicong Hou
- College of Science; China Agricultural University; Beijing China
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