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Yin J, Gou Y, Wang Y, Ma Q, Wang R, Yu J, Zhang Y, Wang J, Li Q, Zhao X. Can the heptapeptide ASSIVSF of the β 2-adrenoceptor recognize ephedrine and pseudoephedrine epimers in a complex system? J Chromatogr A 2024; 1722:464857. [PMID: 38569445 DOI: 10.1016/j.chroma.2024.464857] [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: 01/18/2024] [Revised: 03/12/2024] [Accepted: 03/29/2024] [Indexed: 04/05/2024]
Abstract
Epimer separation is crucial in the field of analytical chemistry, separation science, and the pharmaceutical industry. No reported methods could separate simultaneously epimers or even isomers and remove other unwanted, co-existing, interfering substances from complex systems like herbal extracts. Herein, we prepared a heptapeptide-modified stationary phase for the separation of 1R,2S-(-)-ephedrine [(-)-Ephe] and 1S,2S-(+)-pseudoephedrine [(+)-Pse] epimers from Ephedra sinica Stapf extract and blood samples. The heptapeptide stationary phase was comprehensively characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy. The separation efficiency of the heptapeptide column was compared with an affinity column packed with full-length β2-AR functionalized silica gel (β2-AR column). The binding affinity of the heptapeptide with (+)-Pse was 3-fold greater than that with (-)-Ephe. Their binding mechanisms were extensively characterized by chromatographic analysis, ultraviolet spectra, circular dichroism analysis, isothermal titration calorimetry, and molecule docking. An enhanced hydrogen bonding was clearly observed in the heptapeptide-(+)-Pse complex. Such results demonstrated that the heptapeptide can recognize (+)-Pse and (-)-Ephe epimers in a complex system. This work, we believe, was the first report to simultaneously separate epimers and remove non-specific interfering substances from complex samples. The method was potentially applicable to more challenging sample separation, such as chiral separation from complex systems.
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Affiliation(s)
- Jiatai Yin
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Yiheng Gou
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Yiheng Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Qingyuan Ma
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Rui Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Jing Yu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Yajun Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Jing Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Qian Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China.
| | - Xinfeng Zhao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
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Fu J, Qin W, Cao LQ, Chen ZS, Cao HL. Advances in receptor chromatography for drug discovery and drug-receptor interaction studies. Drug Discov Today 2023; 28:103576. [PMID: 37003514 DOI: 10.1016/j.drudis.2023.103576] [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: 01/12/2023] [Revised: 03/09/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023]
Abstract
Receptor chromatography involves high-throughput separation and accurate drug screening based on specific drug-receptor recognition and affinity, which has been widely used to screen active compounds in complex samples. This review summarizes the immobilization methods for receptors from three aspects: random covalent immobilization methods, site-specific covalent immobilization methods and dual-target receptor chromatography. Meanwhile, it focuses on its applications from three angles: screening active compounds in natural products, in natural-product-derived DNA-encoded compound libraries and drug-receptor interactions. This review provides new insights for the design and application of receptor chromatography, high-throughput and accurate drug screening, drug-receptor interactions and more. Teaser: This review summarizes the immobilization methods of receptors and the application of receptor chromatography, which will provide new insights for the design and application of receptor chromatography, rapid drug screening, drug-receptor interactions and more.
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Affiliation(s)
- Jia Fu
- Xi'an Key Laboratory of Basic and Translation of Cardiovascular Metabolic Disease, College of Pharmacy, Xi'an Medical University, Xi'an, China
| | - Wei Qin
- Xi'an Key Laboratory of Basic and Translation of Cardiovascular Metabolic Disease, College of Pharmacy, Xi'an Medical University, Xi'an, China
| | - Lu-Qi Cao
- College of Pharmacy and Health Sciences, St John's University, NY, USA
| | - Zhe-Sheng Chen
- College of Pharmacy and Health Sciences, St John's University, NY, USA.
| | - Hui-Ling Cao
- Xi'an Key Laboratory of Basic and Translation of Cardiovascular Metabolic Disease, College of Pharmacy, Xi'an Medical University, Xi'an, China.
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Li P, Ou Y, Zhang Z, Wang W, Ji X, Fang M, Li Q. Rapid separation and binding configuration prediction of the components in Danshen decoction to endothelin A receptor using affinity chromatography and molecular dynamics simulation. J Sep Sci 2023; 46:e2200944. [PMID: 36820791 DOI: 10.1002/jssc.202200944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/14/2023] [Accepted: 02/19/2023] [Indexed: 02/24/2023]
Abstract
As a famous traditional Chinese formula, Danshen Decoction has the potential to relieve the pain of pulmonary arterial hypertension patients, however, the functional components remain unknown. Herein, we reported a method to screen the functional components in Danshen Decoction targeting endothelin receptor A, an accepted target for the treatment of the disease. The receptor was functionalized on the macroporous silica gel through an epidermal growth factor receptor fusion tag and its covalent inhibitor. Using the affinity gel as the stationary phase, the bioactive compound was identified as salvianolic acid B by mass spectrometry. The binding kinetic parameter (dissociation rate constants kd ) of salvianolic acid B with the receptor was determined via peak profiling. Using the specific ligands of the receptor as probes, the binding configuration prediction of salvianolic acid B with the receptor was performed by molecular dynamics simulation. Our results indicated that salvianolic acid B is a potential bioactive compound in Danshen Decoction targeting the receptor. This work showed that receptor chromatography in combination with molecular dynamics simulation is applicable to predicting the binding kinetics and configuration of a ligand to a receptor, providing crucial insight for the rational design of drugs that recognize functional proteins.
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Affiliation(s)
- Ping Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, P. R. China
| | - Yuanyuan Ou
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, P. R. China
| | - Zilong Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, P. R. China
| | - Wenwen Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, P. R. China
| | - Xu Ji
- Engineering Research Center of Tibetan Medicine Detection Technology, Ministry of Education, Xizang Minzu University, Xianyang, P. R. China
| | - Minfeng Fang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, P. R. China
| | - Qian Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, P. R. China
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Xu T, Wang M, Liu X, Feng D, Zhu Y, Fan Z, Rao S, Lu J. A Scaffold-based Deep Generative Model Considering Molecular Stereochemical Information. Mol Inform 2022; 41:e2200088. [PMID: 36031563 DOI: 10.1002/minf.202200088] [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: 12/13/2022]
Abstract
Designing molecules with specific scaffolds can facilitate the discovery and optimization of lead compounds. Some scaffold-based molecular generation models have been developed using deep-learning methods based on specific scaffolds, although incorporating scaffold generalization is expected to achieve scaffold hopping. Moreover, most of the existing models focus on the 2D shape of the scaffold and overlook the stereochemical properties of the compound, especially for natural products. In this study, we optimized the scaffold-based molecular generation model designed by Lim et al. (Chemical Science 2020, 11, 1153-1164). Real-time ultrafast shape recognition with pharmacophore constraints (USRCAT) was introduced into the model to search for molecules similar to the 3D conformation and pharmacophore of the input scaffold sourced from the training set; the searched molecules were then used as new scaffolds to execute scaffold hopping. The optimized model could generate new molecules with the same chirality as the input scaffold. Furthermore, the probability distribution of the molecular structure and various physicochemical properties were analyzed to evaluate the model's generation capability. We thus believe that the optimized model can provide a basis for medicinal chemists to explore a wider chemical space toward optimization of the lead compounds and to screen the virtual compound library.
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Affiliation(s)
- Tianxu Xu
- Department, Institution:Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, School of Pharmacy, Yantai University, No. 30, Qingquan Road, Laishan District, Yantai, 264005, China
| | - Minjun Wang
- Department, Institution:Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, School of Pharmacy, Yantai University, No. 30, Qingquan Road, Laishan District, Yantai, 264005, China
| | - Xiaoqian Liu
- Department, Institution:Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, School of Pharmacy, Yantai University, No. 30, Qingquan Road, Laishan District, Yantai, 264005, China
| | - Dawei Feng
- Department, Institution:Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, School of Pharmacy, Yantai University, No. 30, Qingquan Road, Laishan District, Yantai, 264005, China
| | - Yanjuan Zhu
- Department, Institution:Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, School of Pharmacy, Yantai University, No. 30, Qingquan Road, Laishan District, Yantai, 264005, China
| | - Zhe Fan
- Department, Institution:Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, School of Pharmacy, Yantai University, No. 30, Qingquan Road, Laishan District, Yantai, 264005, China
| | - Shurong Rao
- Department, Institution:Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, School of Pharmacy, Yantai University, No. 30, Qingquan Road, Laishan District, Yantai, 264005, China
| | - Jing Lu
- Department, Institution:Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, School of Pharmacy, Yantai University, No. 30, Qingquan Road, Laishan District, Yantai, 264005, China
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Natural Sympathomimetic Drugs: From Pharmacology to Toxicology. Biomolecules 2022; 12:biom12121793. [PMID: 36551221 PMCID: PMC9775352 DOI: 10.3390/biom12121793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 12/03/2022] Open
Abstract
Sympathomimetic agents are a group of chemical compounds that are able to activate the sympathetic nervous system either directly via adrenergic receptors or indirectly by increasing endogenous catecholamine levels or mimicking their intracellular signaling pathways. Compounds from this group, both used therapeutically or abused, comprise endogenous catecholamines (such as adrenaline and noradrenaline), synthetic amines (e.g., isoproterenol and dobutamine), trace amines (e.g., tyramine, tryptamine, histamine and octopamine), illicit drugs (e.g., ephedrine, cathinone, and cocaine), or even caffeine and synephrine. In addition to the effects triggered by stimulation of the sympathetic system, the discovery of trace amine associated receptors (TAARs) in humans brought new insights about their sympathomimetic pharmacology and toxicology. Although synthetic sympathomimetic agents are mostly seen as toxic, natural sympathomimetic agents are considered more complacently in the terms of safety in the vision of the lay public. Here, we aim to discuss the pharmacological and mainly toxicological aspects related to sympathomimetic natural agents, in particular of trace amines, compounds derived from plants like ephedra and khat, and finally cocaine. The main purpose of this review is to give a scientific and updated view of those agents and serve as a reminder on the safety issues of natural sympathomimetic agents most used in the community.
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Tian R, Yin J, Yao Q, Wang T, Chen J, Liang Q, Li Q, Zhao X. Development of an Allostery Responsive Chromatographic Method for Screening Potential Allosteric Modulator of Beta2-adrenoceptor from a Natural Product-Derived DNA-Encoded Chemical Library. Anal Chem 2022; 94:9048-9057. [PMID: 35695812 DOI: 10.1021/acs.analchem.2c01210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Allosteric ligands are promising drugs owing to their remote regulations of the orthosteric ligand signaling pathway. There are few allosteric ligands due to the lack of handy and efficacious method for the screening. Herein, we developed an affinity chromatographic method for allosteric ligand screening by immobilizing purified beta2 adrenoceptor (β2-AR) onto macroporous silica gel by a two-point tethering method. The method relies on the occupation of the orthosteric site by an antagonist and the chelation of N-terminal His-tag of the receptor and Ni2+ coated on the gel. The immobilized β2-AR demonstrated the greatest allosteric responsive feature when Cmpd-15 (0.25 μM) was included in the mobile phase. Under the same conditions, the association constants of three agonists (salbutamol, terbutaline, and tulobuterol) reduced to 47%, 19%, and 27% compared with the data without the inclusion of Cmpd-15 in the mobile phase. APF was screened as a potential allosteric modulator of β2-AR by applying the immobilized receptor in a natural product-derived DNA-encoded chemical library (DEL). Relying on these results, we reasoned that the current method has potential in screening allosteric ligands of the receptor. We expect that it is applicable for the discovery of new allosteric binding sites of a target protein and screening allosteric modulators of the other receptors from complex samples.
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Affiliation(s)
- Rui Tian
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Jiatai Yin
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Qingqing Yao
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Taotao Wang
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Jiahuan Chen
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Qi Liang
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Qian Li
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Xinfeng Zhao
- College of Life Sciences, Northwest University, Xi'an 710069, China
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7
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Gad MZ, Azab SS, Khattab AR, Farag MA. Over a century since ephedrine discovery: an updated revisit to its pharmacological aspects, functionality and toxicity in comparison to its herbal extracts. Food Funct 2021; 12:9563-9582. [PMID: 34533553 DOI: 10.1039/d1fo02093e] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Ephedrine, a sympathomimetic amine that exhibits several adrenaline actions, is a plant alkaloid that is a common ingredient in several cold, asthma and narcolepsy treatment preparations, and in obesity management and sport medicine. Its principal action mechanism relies on its direct adrenergic actions as well as indirect role that involves the release of epinephrine and norepinephrine, thus increasing the activity of epinephrine and norepinephrine at the postsynaptic α and β receptors. Nevertheless, its serious side effects, including stroke, heart attack, drug abuse and interactions, have never been comprehensively reviewed. We conducted a systematic review of data on ephedrine, including its occurrence in functional foods, pharmacological aspects, metabolism, pharmaco/toxicokinetics and clinical features. Furthermore, a review of ephedrine natural structural analogues with regards to their differential adrenergic receptor binding affinities, food interaction, and their impact on the pharmacokinetics and effects relative to ephedrine are presented for the first time, and in comparison to its action when present in herbs.
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Affiliation(s)
- Mohamed Z Gad
- Department of Biochemistry, Faculty of Pharmacy & Biotechnology, The German University in Cairo, Egypt
| | - Samar S Azab
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Amira R Khattab
- Pharmacognosy Department, College of Pharmacy, Arab Academy for Science, Technology and Maritime Transport, Alexandria 1029, Egypt
| | - Mohamed A Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr El Aini St, P.B. 11562, Cairo, Egypt. .,Chemistry Department, School of Sciences & Engineering, The American University in Cairo, New Cairo 11835, Egypt
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8
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Stohs SJ, Shara M, Ray SD. p-Synephrine, ephedrine, p-octopamine and m-synephrine: Comparative mechanistic, physiological and pharmacological properties. Phytother Res 2020; 34:1838-1846. [PMID: 32101364 PMCID: PMC7496387 DOI: 10.1002/ptr.6649] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 02/04/2020] [Indexed: 01/23/2023]
Abstract
Confusion and misunderstanding exist regarding the lack of cardiovascular and other adverse health effects of p-synephrine and p-octopamine relative to ephedrine and m-synephrine (phenylephrine) which are known for their effects on the cardiovascular system. These four molecules have some structural similarities. However, the structural and stereochemical differences of p-synephrine and p-octopamine as related to ephedrine and m-synephrine result in markedly different adrenergic receptor binding characteristics as well as other mechanistic differences which are reviewed. p-Synephrine and p-octopamine exhibit little binding to α-1, α-2, β-1 and β-2 adrenergic receptors, nor are they known to exhibit indirect actions leading to an increase in available levels of endogenous norepinephrine and epinephrine at commonly used doses. The relative absence of these mechanistic actions provides an explanation for their lack of production of cardiovascular effects at commonly used oral doses as compared to ephedrine and m-synephrine. As a consequence, the effects of ephedrine and m-synephrine cannot be directly extrapolated to p-synephrine and p-octopamine which exhibit significantly different pharmacokinetic, and physiological/pharmacological properties. These conclusions are supported by human, animal and in vitro studies that are discussed.
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Affiliation(s)
- Sidney J Stohs
- School of Pharmacy and Health Professions, Creighton University Medical Center, Omaha, Nebraska.,Department of Pharmaceutical & Biomedical Sciences, Kitsto Consulting LLC, Frisco, Texas
| | - Mohd Shara
- Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
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Sengupta S, Chandrasekaran S. Modifications of amino acids using arenediazonium salts. Org Biomol Chem 2019; 17:8308-8329. [DOI: 10.1039/c9ob01471c] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Aryl transfer reactions from arenediazonium salts have started to make their impact in chemical biology with initial forays in the arena of arylative modifications and bio-conjugations of amino acids, peptides and proteins.
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Affiliation(s)
- Saumitra Sengupta
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore
- India
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10
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Fei F, Sun H, Cheng X, Liu J, Wang J, Li Q, Zhang Y. Rapid screening and identification of bioactive compounds specifically binding to beta 2-adrenoceptor from San-ao decoction using affinity magnetic fine particles coupled with high-performance liquid chromatography-mass spectrometry. Chin Med 2018; 13:49. [PMID: 30258489 PMCID: PMC6154427 DOI: 10.1186/s13020-018-0207-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 09/20/2018] [Indexed: 01/24/2023] Open
Abstract
Background San-ao decoction (SAD) has been widely used in Chinese medicine against respiratory diseases, such as asthma and rhinallergosis. The bioactive compounds for such pharmacological action remain unknown. Methods We developed a methodology to isolate the bioactive compounds of SAD. The assay involved the immobilization of beta 2-adrenoceptor (β 2-AR) onto magnetic fine particles, the capture of target compounds by the immobilized receptor, the identification of the receptor bound compounds by reversed-phase high-performance liquid chromatography coupled with tandem mass spectrometry. Results Vicenin, shaftoside, isoshaftoside, liquiritin apioside and isoliquiritin apioside were identified as β 2-AR ligands in SAD extract. The binding of these compounds to β 2-AR occurred on serine169, serine170 and phenylalanine256 of the receptor. Conclusions The developed methodology has high stability and specificity for recognizing and isolating target compounds. It is an alternative method for rapidly screening bioactive compounds of immobilized receptor from Chinese prescriptions.
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Affiliation(s)
- Fuhuan Fei
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, 710069 China
| | - Huanmei Sun
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, 710069 China
| | - Xixi Cheng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, 710069 China
| | - Jiajun Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, 710069 China
| | - Jing Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, 710069 China
| | - Qian Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, 710069 China
| | - Yajun Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, 710069 China
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Gao X, Yang L, Li Q, An Y, Liao S, Gao H, Zhao X, Bian L, Zheng X. Investigation on temperature-induce conformational change of immobilized β 2 adrenergic receptor. Biochem Biophys Res Commun 2017; 494:634-640. [PMID: 28851653 DOI: 10.1016/j.bbrc.2017.08.105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 08/25/2017] [Indexed: 11/17/2022]
Abstract
The β2 adrenergic receptor (β2-AR) is a prototypical family A G protein-coupled receptor (GPCR) and an excellent model system for studying the mechanism of GPCR activation. Purified β2-AR was immobilized on macroporous silica gel to obtain liquid chromatographic stationary phase. The resulting phase was packed into a stainless steel column (4.6 × 50 mm, 7 μm) and used for on-line chromatographic system. When column oven temperature increased from 20.0 °C to 40.0 °C, uncomplete separate chromatographic peaks of ephedrine and pseudoephedrine as receptor conformational probe were gradually merged into one peak, meanwhile retention time and resolution of the probes were reduced correspondingly, which suggested that temperature could regulate protein conformation. Temperature-induced conformational change of immobilized β2-AR, especially changes at higher temperatures, indicated that constructed receptor chromatography could simulate fever disease state of human body and clarify receptor conformation change at pathological condition. At the same time this study could also provide new ideas for screening active components in pathological conditions.
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Affiliation(s)
- Xiaokang Gao
- School of Pharmaceutical Sciences, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Provincial Technology and Research Center for Comprehensive Development of Medicinal Herbs, Hubei University of Medicine, Shiyan 442000, Hubei, China; College of Life Science, Northwest University, Xi'an 710069, China; Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Shiyan 442000, Hubei, China
| | - Lingjian Yang
- College of Life Science, Northwest University, Xi'an 710069, China
| | - Qian Li
- College of Life Science, Northwest University, Xi'an 710069, China
| | - Yuxin An
- College of Life Science, Northwest University, Xi'an 710069, China
| | - Sha Liao
- College of Life Science, Northwest University, Xi'an 710069, China
| | - Haiyang Gao
- College of Life Science, Northwest University, Xi'an 710069, China
| | - Xinfeng Zhao
- College of Life Science, Northwest University, Xi'an 710069, China
| | - Liujiao Bian
- College of Life Science, Northwest University, Xi'an 710069, China
| | - Xiaohui Zheng
- College of Life Science, Northwest University, Xi'an 710069, China.
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12
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Sun Z, Wang J, Li Q, Zhao M, Zhang Y, Xiong X, Zhao X, Zheng X. A fast affinity extraction methodology for rapid screening of bioactive compounds specifically binding to beta2-adrenergic receptor from Xie-Bai-San. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1941-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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13
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Li Z, Gao H, Li J, Zhang Y. Identification of bioactive compounds in Shaoyao-Gancao decoction using β2-adrenoceptor affinity chromatography. J Sep Sci 2017; 40:2558-2564. [PMID: 28432819 DOI: 10.1002/jssc.201700113] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 04/04/2017] [Accepted: 04/13/2017] [Indexed: 12/12/2022]
Abstract
Shaoyao-Gancao decoction, a Chinese herbal formula, is composed of Paeoniae Radix alba and Glycyrrhiza Radix et rhizoma. It has been widely used to treat muscle spasms and asthma. However, little is known about the bioactive components of Shaoyao-Gancao decoction. In the present study, the bioactive compounds in water-extract of Shaoyao-Gancao decoction were separated by the immobilized β2 -adrenoceptor affinity column and identified using quadrupole time-of-flight mass spectrometry. The affinity constants of the separated compounds that bind to β2 -adrenoceptor were determined by frontal analysis. Compound bioactivity was tested in a rat tracheal smooth muscle relaxation assay. We identified the bioactive compounds in the water extract of Shaoyao-Gancao decoction that bound to the β2 -adrenoceptor as paeoniflorin and liquiritin. Paeoniflorin and liquiritin had only one binding site on the immobilized β2 -adrenoceptor, and the affinity constants were (2.16 ± 0.10) × 104 M-1 and (2.95 ± 0.15) × 104 M-1 , respectively. Both compounds induced a concentration-dependent relaxation of tracheal smooth muscle following K+ -stimulated contraction, and the relaxation effects were abrogated by the β2 -adrenoceptor antagonist, ICI 118551. Therefore, paeoniflorin and liquiritin are bioactive compounds in Shaoyao-Gancao decoction and the β2 -adrenoceptor affinity chromatography is a useful tool for identifying potential β2 -adrenoceptor ligands in natural products used in traditional Chinese medicine.
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Affiliation(s)
- Zehua Li
- College of Life Science, Northwest University, Xi'an, China
| | - Haiyang Gao
- College of Life Science, Northwest University, Xi'an, China
| | - Jiangying Li
- Xi'an Hospital of Traditional Chinese Medicine, Xi'an, China
| | - Yajun Zhang
- College of Life Science, Northwest University, Xi'an, China
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Li Q, Qiao P, Chen X, Wang J, Bian L, Zheng X. Affinity chromatographic methodologies based on immobilized voltage dependent anion channel isoform 1 and application in protein-ligand interaction analysis and bioactive compounds screening from traditional medicine. J Chromatogr A 2017; 1495:31-45. [PMID: 28342583 DOI: 10.1016/j.chroma.2017.03.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 03/09/2017] [Accepted: 03/13/2017] [Indexed: 12/11/2022]
Abstract
Voltage dependent anion channel isoform 1 (VDAC-1) serves as an attractive target of anti-cancer drugs by mediating the entry and exit of metabolites between cytoplasm and mitochondria. This work reports on the preparation of a VDAC-1-based bioaffinity chromatographic stationary phase by linking the protein on lecithin modified microspheres. An assay of chromatographic methods including frontal analysis, zonal elution, injection dependent analysis and nonlinear chromatography were utilized to investigate the bindings of ATP, NADH and NADPH to VDAC-1. Electrostatic interactions were found to be main forces during these bindings. The calculated association constants of the three ligands to VDAC-1 showed good agreements between diverse chromatographic methods. Validated application of the stationary phase was performed by screening anti-cancer compounds of Rheum officinale Baill. using high performance affinity chromatography coupled with electrospray ionization-quadrupole time of flight mass spectrometry. Chrysophanol, emodin, rhein, aloe-emodin and catechin were identified as the bioactive components of the herb. These compounds targeted VDAC-1 through Thr207 and the N-terminal region of the protein. Taken together, the current stationary phase was possible to become a promising tool for protein-ligand interaction analysis and anti-cancer drug screening from complex matrices.
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Affiliation(s)
- Qian Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Pan Qiao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Xiu Chen
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Jing Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Liujiao Bian
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an 710069, China.
| | - Xiaohui Zheng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an 710069, China.
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15
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Liu G, Wang P, Li C, Wang J, Sun Z, Zhao X, Zheng X. Confirming therapeutic target of protopine using immobilized β 2 -adrenoceptor coupled with site-directed molecular docking and the target-drug interaction by frontal analysis and injection amount-dependent method. J Mol Recognit 2017; 30. [PMID: 28124461 DOI: 10.1002/jmr.2613] [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: 07/10/2016] [Revised: 12/17/2016] [Accepted: 01/03/2017] [Indexed: 11/09/2022]
Abstract
Drug-protein interaction analysis is pregnant in designing new leads during drug discovery. We prepared the stationary phase containing immobilized β2 -adrenoceptor (β2 -AR) by linkage of the receptor on macroporous silica gel surface through N,N'-carbonyldiimidazole method. The stationary phase was applied in identifying antiasthmatic target of protopine guided by the prediction of site-directed molecular docking. Subsequent application of immobilized β2 -AR in exploring the binding of protopine to the receptor was realized by frontal analysis and injection amount-dependent method. The association constants of protopine to β2 -AR by the 2 methods were (1.00 ± 0.06) × 105 M-1 and (1.52 ± 0.14) × 104 M-1 . The numbers of binding sites were (1.23 ± 0.07) × 10-7 M and (9.09 ± 0.06) × 10-7 M, respectively. These results indicated that β2 -AR is the specific target for therapeutic action of protopine in vivo. The target-drug binding occurred on Ser169 in crystal structure of the receptor. Compared with frontal analysis, injection amount-dependent method is advantageous to drug saving, improvement of sampling efficiency, and performing speed. It has grave potential in high-throughput drug-receptor interaction analysis.
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Affiliation(s)
- Guangxin Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, China
| | - Pei Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, China
| | - Chan Li
- Drug Certificate Center, Shaanxi Food and Drug Administration, Xi'an, China
| | - Jing Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, China
| | - Zhenyu Sun
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, China
| | - Xinfeng Zhao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, China
| | - Xiaohui Zheng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, China
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16
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Zhang Y, Zeng K, Wang J, Gao H, Nan Y, Zheng X. Identifying the antiasthmatic target of doxofylline using immobilized β2 -adrenoceptor based high-performance affinity chromatography and site-directed molecular docking. J Mol Recognit 2016; 29:492-8. [PMID: 27173639 DOI: 10.1002/jmr.2549] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 02/28/2016] [Accepted: 04/06/2016] [Indexed: 01/16/2023]
Abstract
As a xanthine derivative, doxofylline is believed to be dominant for fighting against asthma in practice. Unlike other xanthines, the antiasthmatic effects of doxofylline lack any definite proof of target and mediating mechanism according to previous reports. In this work, the interaction between doxofylline and β2 -AR was investigated by high performance affinity chromatography using frontal analysis and nonlinear model. The methodology involved the immobilization of β2 -AR on the silica gel by a random linking method, the determination of the binding parameters by frontal analysis and nonlinear chromatography and the exploration of the binding mechanism by site-directed molecular docking. The association constant for doxofylline binding to immobilized β2 -AR was determined to be 7.70 × 10(4) M(-1) by nonlinear chromatography and 5.91 × 10(4) M(-1) by frontal analysis. Ser(169) and Ser(173) were the binding sites for the receptor-drug interaction on which hydrogen bond was believed to be the main driven force during the interaction. These results indicated that the antiasthmatic effects of doxofylline may be behind the mediating mechanism of β2 -AR. High performance affinity chromatography based on immobilized receptor has potential to become an alternative for drug target confirmation and drug-receptor interaction analysis. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Yajun Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, 710069, China.
| | - Kaizhu Zeng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, 710069, China
| | - Jing Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, 710069, China
| | - Haiyang Gao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, 710069, China
| | - Yefei Nan
- College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, 710065, China
| | - Xiaohui Zheng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, 710069, China
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17
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Comparison of zonal elution and nonlinear chromatography in determination of the interaction between seven drugs and immobilised β2-adrenoceptor. J Chromatogr A 2015; 1401:75-83. [DOI: 10.1016/j.chroma.2015.05.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 05/05/2015] [Indexed: 12/17/2022]
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18
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Binding of angiogenesis inhibitor kringle 5 to its specific ligands by frontal affinity chromatography. J Chromatogr A 2015; 1401:42-51. [DOI: 10.1016/j.chroma.2015.04.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 04/25/2015] [Accepted: 04/28/2015] [Indexed: 11/21/2022]
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Gao X, Li Y, Qin Y, Chen E, Li Q, Zhao X, Bian L, Zheng J, Li Z, Zhang Y, Zheng X. Reversible and oriented immobilization of histidine-tagged protein on silica gel characterized by frontal analysis. RSC Adv 2015. [DOI: 10.1039/c5ra01012h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Utilizing N,N′-bis(carboxymethyl)-L-lysine (ANTA) combined with bivalent metal cation Ni2+, which leaving free sites for the reversible binding of gene recombinant histidine-tagged β2-adrenoceptor onto silica gel.
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