1
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Santha SSR, Vishwanathan AS. Mechanistic insights into 5-lipoxygenase inhibition by pyocyanin: a molecular docking and molecular dynamics study. J Biomol Struct Dyn 2022; 40:9752-9760. [PMID: 34143945 DOI: 10.1080/07391102.2021.1934543] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Pyocyanin, a redox-active phenazine pigment produced by Pseudomonas aeruginosa, inhibits 5-lipoxygenase (5-LOX) activity. However, whether pyocyanin can directly block the enzymatic activity by binding at the active site still remains a question because of its ability to produce superoxide radicals and H2O2. With the objective of characterizing this mechanism, we carried out molecular docking and molecular dynamics simulations and performed Molecular Mechanics Poisson-Boltzmann surface area (MMPBSA) binding energy studies. The results of the study revealed that pyocyanin is dynamically stable at the active site of 5-LOX and its MMPBSA binding energy (-84.720 kJ/mol) is comparable to that of the 5-LOX standard inhibitor zileuton (-72.729 kJ/mol). Similar studies using three other phenazine derivatives - 1-hydroxyphenazine, phenazine-1-carboxylic acid and phenazine-1-carboxamide - also showed encouraging results. In light of this evidence, we postulate as a proof of concept that pyocyanin and these phenazine derivatives have the potential to inhibit 5-LOX activity by directly binding at the active site and blocking enzymatic catalysis of the substrate. Considering the potential of 5-LOX inhibitors in inflammatory diseases such as asthma and rheumatoid arthritis, the findings of this study open up the exploration of phenazine derivatives in structure-based drug design against 5-LOX. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | - A S Vishwanathan
- Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Puttaparthi, Andhra Pradesh, India
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2
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Ghani A, Sadiq Z, Iqbal S, Yasmeen A, Shujaat S, Ali I. Screening of anti-inflammatory and antioxidant potential of functionalized tetrahydrocarbazole linked 1,2-diazoles and their docking studies. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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3
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de Vasconcelos A, de Moura LR, Pedra NS, Bona NP, Soares MSP, da Silva Marques M, Horn AP, Spohr L, Spanevello RM, Stefanello FM, Cunico W. Thiazolidine-2,4-dione derivative exhibits antitumoral effect and reverts behavioral and metabolic changes in a model of glioblastoma. Metab Brain Dis 2022; 37:2053-2059. [PMID: 35616801 DOI: 10.1007/s11011-022-01005-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 05/09/2022] [Indexed: 11/27/2022]
Abstract
The aim of the present study was to evaluate the anti-glioma activity of 3-(4-fluorobenzyl)-5-(4-methoxybenzylidene)thiazolidine-2,4-dione (AV23) in a preclinical model of glioblastoma, as well as behavioral parameters and toxicological profile. The implantation of C6 cells in the left striatum of male Wistar rats was performed by stereotaxic surgery. After recovery, animals were treated with vehicle (canola oil) or AV23 (10 mg/kg/day) intragastrically for 15 days. It was found that AV23 reduced tumor volume by 90%. Serum biochemical parameters such as triglycerides, cholesterol, HDL-cholesterol, LDL-cholesterol, albumin, aspartate aminotransferase, urea, creatinine and total proteins were not changed; however, there was a slight increase in alanine aminotransferase. The compound AV23 reverted the hypoglycemia and the reduction in body weight caused by glioblastoma. Additionally, AV23 was able to revert the reduction of locomotion caused by the tumor implantation. Therefore, the compound AV23 can be considered a promising candidate in the treatment of glioblastoma.
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Affiliation(s)
- Alana de Vasconcelos
- Laboratório de Química Aplicada à Bioativos (LaQuiABio), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Larissa Ribeiro de Moura
- Laboratório de Química Aplicada à Bioativos (LaQuiABio), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Nathalia Stark Pedra
- Laboratório de Neuroquímica, Inflamação e Câncer (Neurocan), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Natália Pontes Bona
- Laboratório de Neuroquímica, Inflamação e Câncer (Neurocan), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Mayara Sandrielly Pereira Soares
- Laboratório de Neuroquímica, Inflamação e Câncer (Neurocan), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Magno da Silva Marques
- Instituto de Ciências Biológicas - Morfologia, Universidade Federal de Rio Grande, Rio Grande, RS, Brazil
| | - Ana Paula Horn
- Instituto de Ciências Biológicas - Morfologia, Universidade Federal de Rio Grande, Rio Grande, RS, Brazil
| | - Luiza Spohr
- Laboratório de Neuroquímica, Inflamação e Câncer (Neurocan), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Roselia Maria Spanevello
- Laboratório de Neuroquímica, Inflamação e Câncer (Neurocan), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Francieli Moro Stefanello
- Laboratório de Neuroquímica, Inflamação e Câncer (Neurocan), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
- Laboratório de Biomarcadores, Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Campus Universitário s/n, CEP 96160-000, Capão do Leão, RS, Brazil.
| | - Wilson Cunico
- Laboratório de Química Aplicada à Bioativos (LaQuiABio), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, RS, Brazil
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4
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Sadiq A, Mahnashi MH, Alyami BA, Alqahtani YS, Alqarni AO, Rashid U. Tailoring the substitution pattern of Pyrrolidine-2,5-dione for discovery of new structural template for dual COX/LOX inhibition. Bioorg Chem 2021; 112:104969. [PMID: 34023639 DOI: 10.1016/j.bioorg.2021.104969] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 04/24/2021] [Accepted: 05/03/2021] [Indexed: 12/28/2022]
Abstract
Dual inhibition of the enzymatic pathways of cyclooxygenases (COX-1/COX-2) and lipoxygenase (LOX) is a rational approach for developing more efficient and safe anti-inflammatory agents. Herein, dual inhibitors of COX and LOX for the management of inflammation are reported. The structural modifications of starting pyrrolidine-2,5-dione aldehyde derivatives resulted in two structurally diverse families (Family A & B). Synthesized derivatives from both Families displayed preferential COX-2 affinity in submicromolar to nanomolar ranges. Disubstitution pattern of the most active series of compounds having N-(benzyl(4-methoxyphenyl)amino moiety presents a new template that is mimic to the diaryl pattern of traditional COX-2 inhibitors. Compound 78 with IC50 value of 0.051 ± 0.001 μM emerged as the most active compound. Highly potent COX-2/5-LOX inhibitors have also demonstrated appreciable in-vivo anti-inflammatory activity through carrageenan induced paw edema test. Moreover, the involvement of histamine, bradykinin, prostaglandin, and leukotriene mediators to adjust the inflammatory response were also studied. Apart from COX inhibition, sulfonamide is considered an important template for carbonic anhydrase inhibition. Hence, we also evaluated six sulfonamide derivatives for off-target in-vitro bovine carbonic anhydrase-II inhibition. Biological results were finally rationalized by docking simulations. Typically, most active COX-2 inhibitors interact with the amino acid residues responsible for the COX-2 selectivity.
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Affiliation(s)
- Abdul Sadiq
- Department of Pharmacy, Faculty of Biological Sciences, University of Malakand, Chakdara, 18000 Dir (L), KP, Pakistan.
| | - Mater H Mahnashi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Bandar A Alyami
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Yahya S Alqahtani
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Ali O Alqarni
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Umer Rashid
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, 22060 Abbottabad, Pakistan.
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5
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Anwar F, Saleem U, Ahmad B, Ashraf M, Rehman AU, Froeyen M, Kee LY, Abdullah I, Mirza MU, Ahmad S. New naphthalene derivative for cost-effective AChE inhibitors for Alzheimer’s treatment: In silico identification, in vitro and in vivo validation. Comput Biol Chem 2020; 89:107378. [DOI: 10.1016/j.compbiolchem.2020.107378] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/16/2020] [Accepted: 09/15/2020] [Indexed: 12/11/2022]
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6
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Yuan Y, Pei J, Lai L. LigBuilder V3: A Multi-Target de novo Drug Design Approach. Front Chem 2020; 8:142. [PMID: 32181242 PMCID: PMC7059350 DOI: 10.3389/fchem.2020.00142] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 02/14/2020] [Indexed: 12/18/2022] Open
Abstract
With the rapid development of systems-based pharmacology and poly-pharmacology, method development for rational design of multi-target drugs has becoming urgent. In this paper, we present the first de novo multi-target drug design program LigBuilder V3, which can be used to design ligands to target multiple receptors, multiple binding sites of one receptor, or various conformations of one receptor. LigBuilder V3 is generally applicable in de novo multi-target drug design and optimization, especially for the design of concise ligands for protein targets with large difference in binding sites. To demonstrate the utility of LigBuilder V3, we have used it to design dual-functional inhibitors targeting HIV protease and HIV reverse transcriptase with three different strategy, including multi-target de novo design, multi-target growing, and multi-target linking. The designed compounds were computational validated by MM/GBSA binding free energy estimation as highly potential multi-target inhibitors for both HIV protease and HIV reverse transcriptase. The LigBuilder V3 program can be downloaded at “http://www.pkumdl.cn/ligbuilder3/”.
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Affiliation(s)
- Yaxia Yuan
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Jianfeng Pei
- Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Luhua Lai
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing, China.,Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China.,Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
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7
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Wan Salleh WMNH, Ogunwa TH. Insights into the inhibitory mechanism and molecular interaction of novel alkaloids from Beilschmiedia glabra with lipoxygenase and acetylcholinesterase. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2020. [DOI: 10.1142/s021963361950038x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In this study, the mechanism underlying acetylcholinesterase (AChE) and 5-lipoxygenase (LOX) inhibition by two novel alkaloids, beilschglabrine A and beilschglabrine B, as well as their interaction footprints on the binding pockets were investigated. The results showed that beilschglabrine A and beilschglabrine B inhibit both AChE and LOX in a competitive manner by binding to their active sites thereby interfering with substrate access. The interaction of the alkaloids with the enzymes was favorable and stable with low binding energy values which correlate well with their IC[Formula: see text]. The depicted molecular interaction, structure-energetic pattern and binding conformations confirmed that beilschglabrine A is more potent than beilschglabrine B. The differences in the binding pose and potency of the alkaloids is occasioned by an extra methyl moiety on beilschglabrine B. The chemical scaffold of the alkaloids respected Lipinski’s rule of five and may be relevant in the development of new anti-inflammatory and anti-neurodegenerative disease drugs acting via AChE and LOX inhibition.
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Affiliation(s)
- Wan Mohd Nuzul Hakimi Wan Salleh
- Department of Chemistry, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris (UPSI), 35900 Tanjong Malim, Perak, Malaysia
| | - Tomisin Happy Ogunwa
- Centre for Biocomputing and Drug Design, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria
- Department of Biochemistry, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria
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8
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Acetyl-11-keto-β-boswellic acid derivatives effects on 5-lipoxygenase: In silico viewpoint. J Mol Graph Model 2020; 94:107464. [DOI: 10.1016/j.jmgm.2019.107464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 10/01/2019] [Accepted: 10/01/2019] [Indexed: 01/12/2023]
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9
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Sinha S, Manju SL, Doble M. Chalcone-Thiazole Hybrids: Rational Design, Synthesis, and Lead Identification against 5-Lipoxygenase. ACS Med Chem Lett 2019; 10:1415-1422. [PMID: 31620227 DOI: 10.1021/acsmedchemlett.9b00193] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 09/09/2019] [Indexed: 12/16/2022] Open
Abstract
A hybrid pharmacophore approach is used to design and synthesize novel chalcone-thiazole hybrid molecules. Herein, thiazole has been hybridized with chalcone to obtain a new class of 5-LOX inhibitors. In vitro biological evaluation showed that most of the compounds were better 5-LOX inhibitors than the positive control, Zileuton (IC50 = 1.05 ± 0.03 μM). The best compounds in the series, namely, 4k, 4n, and 4v (4k: IC50 = 0.07 ± 0.02 μM, 4n: IC50 = 0.08 ± 0.05 μM, 4v: 0.12 ± 0.04 μM) are found to be 10 times more active than previously reported 2-amino thiazole (2m: IC50 = 0.9 ± 0.1 μM) by us. Further, 4k has redox (noncompetitive) while 4n and 4v act through a competitive inhibition mechanism. SAR indicated that the presence of methoxy/methyl either in the vicinity of chalcone or both thiazole and chalcone contributed to the synergistic inhibitory effect.
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Affiliation(s)
- Shweta Sinha
- Bioengineering and Drug Design Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology, Madras, Tamil Nadu 600036, India
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
| | - S. L. Manju
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
| | - Mukesh Doble
- Bioengineering and Drug Design Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology, Madras, Tamil Nadu 600036, India
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10
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Li C, Deng X, Xie X, Liu Y, Friedmann Angeli JP, Lai L. Activation of Glutathione Peroxidase 4 as a Novel Anti-inflammatory Strategy. Front Pharmacol 2018; 9:1120. [PMID: 30337875 PMCID: PMC6178849 DOI: 10.3389/fphar.2018.01120] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 09/13/2018] [Indexed: 01/09/2023] Open
Abstract
The anti-oxidative enzyme, glutathione peroxidase 4 (GPX4), helps to promote inflammation resolution by eliminating oxidative species produced by the arachidonic acid (AA) metabolic network. Up-regulating its activity has been proposed as a promising strategy for inflammation intervention. In the present study, we aimed to study the effect of GPX4 activator on the AA metabolic network and inflammation related pathways. Using combined computational and experimental screen, we identified a novel compound that can activate the enzyme activity of GPX4 by more than two folds. We further assessed its potential in a series of cellular assays where GPX4 was demonstrated to play a regulatory role. We are able to show that GPX4 activation suppressed inflammatory conditions such as oxidation of AA and NF-κB pathway activation. We further demonstrated that this GPX4 activator can decrease the intracellular ROS level and suppress ferroptosis. Our study suggests that GPX4 activators can be developed as anti-inflammatory or cyto-protective agent in lipid-peroxidation-mediated diseases.
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Affiliation(s)
- Cong Li
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Xiaobing Deng
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Xiaowen Xie
- Center for Quantitative Biology, Peking University, Beijing, China
| | - Ying Liu
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing, China.,Center for Quantitative Biology, Peking University, Beijing, China
| | | | - Luhua Lai
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.,Center for Quantitative Biology, Peking University, Beijing, China
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11
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Design, synthesis and identification of novel substituted 2-amino thiazole analogues as potential anti-inflammatory agents targeting 5-lipoxygenase. Eur J Med Chem 2018; 158:34-50. [PMID: 30199704 DOI: 10.1016/j.ejmech.2018.08.098] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 08/28/2018] [Accepted: 08/31/2018] [Indexed: 12/25/2022]
Abstract
Human 5-Lipoxygenase (5-LOX) is a key enzyme targeted for asthma and inflammation. Zileuton, the only drug against 5-LOX, was withdrawn from the market due to several problems. In the present study, the performance of rationally designed conjugates of thiazole (2) and thiourea (3) scaffolds from our previously reported 2-amino-4-aryl thiazole (1) is reported. They are synthesized (total 31 derivatives), characterized, and tested against the 5-LOX enzyme in vitro and the mode of action of the most active ones are determined. Compound 2m exhibited an IC50 of 0.9 ± 0.1 μM acting through competitive (non-redox) mechanism, unlike Zileuton, and found to be devoid of radical scavenging properties. Computational studies are in good agreement with the experimental data supporting its mechanism of action. Another lead molecule from the thiourea series (3), 3f, exhibited an IC50 of 1.4 ± 0.1 μM against 5-LOX whose mode of action is redox type (non-competitive). It is promising to note that the activities displayed by both the lead inhibitors, 2m and 3f, are better than the commercial drug, Zileuton (IC50 = 1.5 ± 0.3 μM). These inhibitors could be further developed as drugs against inflammation.
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12
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Li C, Deng X, Zhang W, Xie X, Conrad M, Liu Y, Angeli JPF, Lai L. Novel Allosteric Activators for Ferroptosis Regulator Glutathione Peroxidase 4. J Med Chem 2018; 62:266-275. [PMID: 29688708 DOI: 10.1021/acs.jmedchem.8b00315] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Glutathione peroxidase 4 (GPX4) is essential for cell membrane repair, inflammation suppression, and ferroptosis inhibition. GPX4 upregulation provides unique drug discovery opportunities for inflammation and ferroptosis-related diseases. However, rational design of protein activators is challenging. Until now, no compound has been reported to activate the enzyme activity of GPX4. Here, we identified a potential allosteric site in GPX4 and successfully found eight GPX4 activators using a novel computational strategy and experimental studies. Compound 1 from the virtual screen increased GPX4 activity, suppressed ferroptosis, reduced pro-inflammatory lipid mediator production, and inhibited NF-κB pathway activation. Further chemical synthesis and structure-activity relationship studies revealed seven more activators. The strongest compound, 1d4, increased GPX4 activity to 150% at 20 μM in the cell-free assay and 61 μM in cell extracts. Therefore, we demonstrated that GPX4 can be directly activated using chemical compounds to suppress ferroptosis and inflammation. Meanwhile, the discovery of GPX4 activators verified the possibility of rational design of allosteric activators.
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Affiliation(s)
| | | | | | | | - Marcus Conrad
- Institute of Developmental Genetics , Helmholtz Zentrum München , 85764 Neuherberg , Germany
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13
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Zhang X, Qiao L, Chen Y, Zhao B, Gu Y, Huo X, Zhang Y, Li G. In Silico Analysis of the Association Relationship between Neuroprotection and Flavors of Traditional Chinese Medicine Based on the mGluRs. Int J Mol Sci 2018; 19:ijms19010163. [PMID: 29320397 PMCID: PMC5796112 DOI: 10.3390/ijms19010163] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 12/27/2017] [Accepted: 01/02/2018] [Indexed: 01/30/2023] Open
Abstract
The metabotropic glutamate receptors (mGluRs) are known as both synaptic receptors and taste receptors. This feature is highly similar to the Property and Flavor theory of Traditional Chinese medicine (TCM), which has the pharmacological effect and flavor. In this study, six ligand based pharmacophore (LBP) models, seven homology modeling models, and fourteen molecular docking models of mGluRs were built based on orthosteric and allosteric sites to screening potential compounds from Traditional Chinese Medicine Database (TCMD). Based on the Pharmacopoeia of the People's Republic of China, TCMs of compounds and their flavors were traced and listed. According to the tracing result, we found that the TCMs of the compounds which bound to orthosteric sites of mGluRs are highly correlated to a sweet flavor, while the allosteric site corresponds to a bitter flavor. Meanwhile, the pharmacological effects of TCMs with highly frequent flavors were further analyzed. We found that those TCMs play a neuroprotective role through the efficiencies of detumescence, promoting blood circulation, analgesic effect, and so on. This study provides a guide for developing new neuroprotective drugs from TCMs which target mGluRs. Moreover, it is the first study to present a novel approach to discuss the association relationship between flavor and the neuroprotective mechanism of TCM based on mGluRs.
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Affiliation(s)
- Xu Zhang
- Key Laboratory of TCM-Information Engineer of State Administration of TCM, School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Liansheng Qiao
- Key Laboratory of TCM-Information Engineer of State Administration of TCM, School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Yankun Chen
- Key Laboratory of TCM-Information Engineer of State Administration of TCM, School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Bowen Zhao
- Key Laboratory of TCM-Information Engineer of State Administration of TCM, School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Yu Gu
- Key Laboratory of TCM-Information Engineer of State Administration of TCM, School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Xiaoqian Huo
- Key Laboratory of TCM-Information Engineer of State Administration of TCM, School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Yanling Zhang
- Key Laboratory of TCM-Information Engineer of State Administration of TCM, School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Gongyu Li
- Key Laboratory of TCM-Information Engineer of State Administration of TCM, School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
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14
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Abstract
Single-target inhibition is an unsatisfactory therapeutic option to treat multifactorial pathologies, brought into limelight 'paradox of inflammation' beside dearth of innovation, rationalizes a shift toward 'multiple-target' design concept in anti-inflammatory research field. To improvise, two platform strategies, drugs mixture or multitarget drugs, are plausible. Dual cyclooxygenase/lipoxygenase inhibitor 'licofelone' developed after the backfire of rofecoxib due to safety concerns has fetched first light of triumph of the latter strategy. As hitting multiple targets in restraint is perhaps more viable strategy rather than single target, this review, outlines the most germane multiple target agents of synthetic and natural origin placing clear advantage in favors of multitarget strategy as real therapeutic solution for inflammation.
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15
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Chinese Herbal Medicine Meets Biological Networks of Complex Diseases: A Computational Perspective. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:7198645. [PMID: 28690664 PMCID: PMC5485337 DOI: 10.1155/2017/7198645] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Accepted: 05/15/2017] [Indexed: 12/25/2022]
Abstract
With the rapid development of cheminformatics, computational biology, and systems biology, great progress has been made recently in the computational research of Chinese herbal medicine with in-depth understanding towards pharmacognosy. This paper summarized these studies in the aspects of computational methods, traditional Chinese medicine (TCM) compound databases, and TCM network pharmacology. Furthermore, we chose arachidonic acid metabolic network as a case study to demonstrate the regulatory function of herbal medicine in the treatment of inflammation at network level. Finally, a computational workflow for the network-based TCM study, derived from our previous successful applications, was proposed.
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16
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Xia Z, Yan A. Computational models for the classification of mPGES-1 inhibitors with fingerprint descriptors. Mol Divers 2017; 21:661-675. [PMID: 28484935 DOI: 10.1007/s11030-017-9743-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Accepted: 04/16/2017] [Indexed: 12/13/2022]
Abstract
Human microsomal prostaglandin [Formula: see text] synthase (mPGES)-1 is a promising drug target for inflammation and other diseases with inflammatory symptoms. In this work, we built classification models which were able to classify mPGES-1 inhibitors into two groups: highly active inhibitors and weakly active inhibitors. A dataset of 1910 mPGES-1 inhibitors was separated into a training set and a test set by two methods, by a Kohonen's self-organizing map or by random selection. The molecules were represented by different types of fingerprint descriptors including MACCS keys (MACCS), CDK fingerprints, Estate fingerprints, PubChem fingerprints, substructure fingerprints and 2D atom pairs fingerprint. First, we used a support vector machine (SVM) to build twelve models with six types of fingerprints and found that MACCS had some advantage over the other fingerprints in modeling. Next, we used naïve Bayes (NB), random forest (RF) and multilayer perceptron (MLP) methods to build six models with MACCS only and found that models using RF and MLP methods were better than NB. Finally, all the models with MACCS keys were used to make predictions on an external test set of 41 compounds. In summary, the models built with MACCS keys and using SVM, RF and MLP methods show good prediction performance on the test sets and the external test set. Furthermore, we made a structure-activity relationship analysis between mPGES-1 and its inhibitors based on the information gain of fingerprints and could pinpoint some key functional groups for mPGES-1 activity. It was found that highly active inhibitors usually contained an amide group, an aromatic ring or a nitrogen heterocyclic ring, and several heteroatoms substituents such as fluorine and chlorine. The carboxyl group and sulfur atom groups mainly appeared in weakly active inhibitors.
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Affiliation(s)
- Zhonghua Xia
- State Key Laboratory of Chemical Resource Engineering, Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, P.O. Box 53, 15 BeiSanHuan East Road, Beijing, 100029, People's Republic of China
| | - Aixia Yan
- State Key Laboratory of Chemical Resource Engineering, Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, P.O. Box 53, 15 BeiSanHuan East Road, Beijing, 100029, People's Republic of China.
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17
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Abstract
Designing drugs that can simultaneously interact with multiple targets is a promising approach for treating complicated diseases. Compared to using combinations of single target drugs, multitarget drugs have advantages of higher efficacy, improved safety profile, and simpler administration. Many in silico methods have been developed to approach different aspects of this polypharmacology-guided drug design, particularly for drug repurposing and multitarget drug design. In this review, we summarize recent progress in computational multitarget drug design and discuss their advantages and limitations. Perspectives for future drug development will also be discussed.
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Affiliation(s)
- Weilin Zhang
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies (AAIS), Peking University , Beijing 100871, People's Republic of China
| | - Jianfeng Pei
- Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies (AAIS), Peking University , Beijing 100871, People's Republic of China
| | - Luhua Lai
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies (AAIS), Peking University , Beijing 100871, People's Republic of China.,Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies (AAIS), Peking University , Beijing 100871, People's Republic of China.,BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, People's Republic of China
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18
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Okuno T, Koutsogiannaki S, Ohba M, Chamberlain M, Bu W, Lin FY, Eckenhoff RG, Yokomizo T, Yuki K. Intravenous anesthetic propofol binds to 5-lipoxygenase and attenuates leukotriene B 4 production. FASEB J 2017; 31:1584-1594. [PMID: 28069825 DOI: 10.1096/fj.201601095r] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 12/19/2016] [Indexed: 11/11/2022]
Abstract
Propofol is an intravenous anesthetic that produces its anesthetic effect, largely via the GABAA receptor in the CNS, and also reduces the N-formyl-methionyl-leucyl-phenylalanine (fMLP)-induced neutrophil respiratory burst. Because fMLP-stimulated neutrophils produce leukotriene (LT)B4, we examined the effect of propofol on LTB4 production in vivo and in vitro Cecal ligation and puncture surgery was performed in mice, with or without exposure to propofol. Propofol attenuated the production of 5-lipoxygenase (5-LOX)-related arachidonic acid (AA) derivatives in the peritoneal fluid. Also, in the in vitro experiments on fMLP-stimulated neutrophils and 5-LOX-transfected human embryonic kidney cells, propofol attenuated the production of 5-LOX-related AA derivatives. Based on these results, we hypothesized that propofol would directly affect 5-LOX function. Using meta-azi-propofol (AziPm), we photolabeled stable 5-LOX protein, which had been used to solve the X-ray crystallographic structure of 5-LOX, and examined the binding site(s) of propofol on 5-LOX. Two propofol binding pockets were identified near the active site of 5-LOX. Alanine scanning mutagenesis was performed for the residues of 5-LOX in the vicinity of propofol, and we evaluated the functional role of these pockets in LTB4 production. We demonstrated that these pockets were functionally important for 5-LOX activity. These two pockets can be used to explore a novel 5-LOX inhibitor in the future.-Okuno, T., Koutsogiannaki, S., Ohba, M., Chamberlain, M., Bu, W., Lin, F.-Y., Eckenhoff, R. G., Yokomizo T., Yuki, K. Intravenous anesthetic propofol binds to 5-lipoxygenase and attenuates leukotriene B4 production.
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Affiliation(s)
- Toshiaki Okuno
- Department of Biochemistry, Juntendo University School of Medicine, Tokyo Japan
| | - Sophia Koutsogiannaki
- Division of Cardiac Anesthesia, Department of Anesthesiology, Perioperative and Pain Medicine, Boston Children's Hospital, Boston Massachusetts, USA.,Department of Anesthesia, Harvard Medical School, Boston, Massachusetts, USA
| | - Mai Ohba
- Department of Biochemistry, Juntendo University School of Medicine, Tokyo Japan
| | - Matthew Chamberlain
- Division of Cardiac Anesthesia, Department of Anesthesiology, Perioperative and Pain Medicine, Boston Children's Hospital, Boston Massachusetts, USA
| | - Weiming Bu
- Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA; and
| | - Fu-Yan Lin
- Immune Disease Institute, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Roderic G Eckenhoff
- Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA; and
| | - Takehiko Yokomizo
- Department of Biochemistry, Juntendo University School of Medicine, Tokyo Japan
| | - Koichi Yuki
- Division of Cardiac Anesthesia, Department of Anesthesiology, Perioperative and Pain Medicine, Boston Children's Hospital, Boston Massachusetts, USA; .,Department of Anesthesia, Harvard Medical School, Boston, Massachusetts, USA
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19
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Pereira-Leite C, Nunes C, Jamal SK, Cuccovia IM, Reis S. Nonsteroidal Anti-Inflammatory Therapy: A Journey Toward Safety. Med Res Rev 2016; 37:802-859. [PMID: 28005273 DOI: 10.1002/med.21424] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/27/2016] [Accepted: 10/05/2016] [Indexed: 01/01/2023]
Abstract
The efficacy of nonsteroidal anti-inflammatory drugs (NSAIDs) against inflammation, pain, and fever has been supporting their worldwide use in the treatment of painful conditions and chronic inflammatory diseases until today. However, the long-term therapy with NSAIDs was soon associated with high incidences of adverse events in the gastrointestinal tract. Therefore, the search for novel drugs with improved safety has begun with COX-2 selective inhibitors (coxibs) being straightaway developed and commercialized. Nevertheless, the excitement has fast turned to disappointment when diverse coxibs were withdrawn from the market due to cardiovascular toxicity. Such events have once again triggered the emergence of different strategies to overcome NSAIDs toxicity. Here, an integrative review is provided to address the breakthroughs of two main approaches: (i) the association of NSAIDs with protective mediators and (ii) the design of novel compounds to target downstream and/or multiple enzymes of the arachidonic acid cascade. To date, just one phosphatidylcholine-associated NSAID has already been approved for commercialization. Nevertheless, the preclinical and clinical data obtained so far indicate that both strategies may improve the safety of nonsteroidal anti-inflammatory therapy.
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Affiliation(s)
- Catarina Pereira-Leite
- UCIBIO, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal.,Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Cláudia Nunes
- UCIBIO, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Sarah K Jamal
- UCIBIO, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Iolanda M Cuccovia
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Salette Reis
- UCIBIO, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
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20
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Qiao L, Li B, Chen Y, Li L, Chen X, Wang L, Lu F, Luo G, Li G, Zhang Y. Discovery of Anti-Hypertensive Oligopeptides from Adlay Based on In Silico Proteolysis and Virtual Screening. Int J Mol Sci 2016; 17:E2099. [PMID: 27983650 PMCID: PMC5187899 DOI: 10.3390/ijms17122099] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 12/04/2016] [Accepted: 12/07/2016] [Indexed: 12/30/2022] Open
Abstract
Adlay (Coix larchryma-jobi L.) was the commonly used Traditional Chinese Medicine (TCM) with high content of seed storage protein. The hydrolyzed bioactive oligopeptides of adlay have been proven to be anti-hypertensive effective components. However, the structures and anti-hypertensive mechanism of bioactive oligopeptides from adlay were not clear. To discover the definite anti-hypertensive oligopeptides from adlay, in silico proteolysis and virtual screening were implemented to obtain potential oligopeptides, which were further identified by biochemistry assay and molecular dynamics simulation. In this paper, ten sequences of adlay prolamins were collected and in silico hydrolyzed to construct the oligopeptide library with 134 oligopeptides. This library was reverse screened by anti-hypertensive pharmacophore database, which was constructed by our research team and contained ten anti-hypertensive targets. Angiotensin-I converting enzyme (ACE) was identified as the main potential target for the anti-hypertensive activity of adlay oligopeptides. Three crystal structures of ACE were utilized for docking studies and 19 oligopeptides were finally identified with potential ACE inhibitory activity. According to mapping features and evaluation indexes of pharmacophore and docking, three oligopeptides were selected for biochemistry assay. An oligopeptide sequence, NPATY (IC50 = 61.88 ± 2.77 µM), was identified as the ACE inhibitor by reverse-phase high performance liquid chromatography (RP-HPLC) assay. Molecular dynamics simulation of NPATY was further utilized to analyze interactive bonds and key residues. ALA354 was identified as a key residue of ACE inhibitors. Hydrophobic effect of VAL518 and electrostatic effects of HIS383, HIS387, HIS513 and Zn2+ were also regarded as playing a key role in inhibiting ACE activities. This study provides a research strategy to explore the pharmacological mechanism of Traditional Chinese Medicine (TCM) proteins based on in silico proteolysis and virtual screening, which could be beneficial to reveal the pharmacological action of TCM proteins and provide new lead compounds for peptides-based drug design.
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Affiliation(s)
- Liansheng Qiao
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Bin Li
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Yankun Chen
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Lingling Li
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Xi Chen
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Lingzhi Wang
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Fang Lu
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Ganggang Luo
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Gongyu Li
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Yanling Zhang
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
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21
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Zhang M, Xia Z, Yan A. Computer modeling in predicting the bioactivity of human 5-lipoxygenase inhibitors. Mol Divers 2016; 21:235-246. [PMID: 27904990 DOI: 10.1007/s11030-016-9709-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 11/14/2016] [Indexed: 01/04/2023]
Abstract
5-Lipoxygenase (5-LOX) is a key enzyme in the inflammatory path. Inhibitors of 5-LOX are useful for the treatment of diseases like arthritis, cancer, and asthma. We have collected a dataset including 220 human 5-LOX inhibitors for classification. A self-organizing map (SOM), a support vector machine (SVM), and a multilayer perceptron (MLP) algorithm were used to build models with selected descriptors for classifying 5-LOX inhibitors into active and weakly active ones. MACCS fingerprints were used in this model building process. The accuracy (Q) and Matthews correlation coefficient (MCC) of the best SOM model (Model 1A) were 86.49% and 0.73 on the test set, respectively. The Q and MCC of the best SVM model (Model 2A) were 82.67% and 0.64 on the test set, respectively. The Q and MCC of the best MLP model (Model 3B) were 84.00% and 0.67 on the test set, respectively. In addition, 180 inhibitors with bioactivities measured by fluorescence method were further used for a quantitative prediction. Multiple linear regression (MLR) and SVM algorithms were used to build models to predict the [Formula: see text] values. The correlation coefficients (R) of the MLR model (Model Q1) and the SVM model (Model Q2) were 0.72 and 0.74 on the test set, respectively.
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Affiliation(s)
- Mengdi Zhang
- State Key Laboratory of Chemical Resource Engineering, Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, P.O. Box 53, 15 BeiSanHuan East Road, Beijing, 100029, People's Republic of China
| | - Zhonghua Xia
- State Key Laboratory of Chemical Resource Engineering, Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, P.O. Box 53, 15 BeiSanHuan East Road, Beijing, 100029, People's Republic of China
| | - Aixia Yan
- State Key Laboratory of Chemical Resource Engineering, Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, P.O. Box 53, 15 BeiSanHuan East Road, Beijing, 100029, People's Republic of China. .,State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, People's Republic of China.
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22
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Discovery of Potential Inhibitors of Aldosterone Synthase from Chinese Herbs Using Pharmacophore Modeling, Molecular Docking, and Molecular Dynamics Simulation Studies. BIOMED RESEARCH INTERNATIONAL 2016; 2016:4182595. [PMID: 27781210 PMCID: PMC5065998 DOI: 10.1155/2016/4182595] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 09/15/2016] [Indexed: 11/17/2022]
Abstract
Aldosterone synthase (CYP11B2) is a key enzyme for the biosynthesis of aldosterone, which plays a significant role for the regulation of blood pressure. Excess aldosterone can cause the dysregulation of the renin-angiotensin-aldosterone system (RAAS) and lead to hypertension. Therefore, research and development of CYP11B2 inhibitor are regarded as a novel approach for the treatment of hypertension. In this study, the pharmacophore models of CYP11B2 inhibitors were generated and the optimal model was used to identify potential CYP11B2 inhibitors from the Traditional Chinese Medicine Database (TCMD, Version 2009). The hits were further refined by molecular docking and the interactions between compounds and CYP11B2 were analyzed. Compounds with high Fitvalue, high docking score, and expected interactions with key residues were selected as potential CYP11B2 inhibitors. Two most promising compounds, ethyl caffeate and labiatenic acid, with high Fitvalue and docking score were reserved for molecular dynamics (MD) study. All of them have stability of ligand binding which suggested that they might perform the inhibitory effect on CYP11B2. This study provided candidates for novel drug-like CYP11B2 inhibitors by molecular simulation methods for the hypertension treatment.
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23
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Averina EB, Vasilenko DA, Gracheva YA, Grishin YK, Radchenko EV, Burmistrov VV, Butov GM, Neganova ME, Serkova TP, Redkozubova OM, Shevtsova EF, Milaeva ER, Kuznetsova TS, Zefirov NS. Synthesis and biological evaluation of novel 5-hydroxylaminoisoxazole derivatives as lipoxygenase inhibitors and metabolism enhancing agents. Bioorg Med Chem 2016; 24:712-20. [PMID: 26753816 DOI: 10.1016/j.bmc.2015.12.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 12/18/2015] [Accepted: 12/23/2015] [Indexed: 12/16/2022]
Abstract
A versatile synthesis of novel 5-hydroxylaminoisoxazoles bearing adamantane moieties has been accomplished using the heterocyclization reactions of readily available unsaturated esters by the treatment with tetranitromethane in the presence of triethylamine and subsequent reduction of resulting 5-nitroisoxazoles by SnCl2 with the participation of THF. A number of obtained isoxazole derivatives were evaluated for their antioxidative activity, inhibition of lipoxygenases and impact on the rat liver mitochondria. The majority of tested compounds demonstrated moderate antiradical activity in DPPH test (up to EC50 16μM). The same compounds strongly inhibited soybean lipoxygenase (up to IC50 0.4μM) and Fe(2+)- and Fe(3+)-induced lipid peroxidation (LP) of rat brain cortex homogenate (up to IC50 0.3μM). All tested isoxazole derivatives promoted the phosphorylating respiratory activity simultaneously with maximal stimulated respiratory activity of mitochondria and do not reveal any toxicity towards the primary culture of rat cortex neurons.
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Affiliation(s)
- Elena B Averina
- Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory, 1-3, Moscow 119991, Russia; IPAC RAS, Severnyi Proezd, 1, Chernogolovka, Moscow Region, 142432, Russia.
| | - Dmitry A Vasilenko
- Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory, 1-3, Moscow 119991, Russia
| | - Yulia A Gracheva
- Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory, 1-3, Moscow 119991, Russia
| | - Yuri K Grishin
- Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory, 1-3, Moscow 119991, Russia
| | - Eugene V Radchenko
- Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory, 1-3, Moscow 119991, Russia; IPAC RAS, Severnyi Proezd, 1, Chernogolovka, Moscow Region, 142432, Russia
| | - Vladimir V Burmistrov
- Volgograd State Technical University, VSTU, Lenina Avenue, 28, Volgograd 400005, Russia
| | - Gennady M Butov
- Volgograd State Technical University, VSTU, Lenina Avenue, 28, Volgograd 400005, Russia
| | | | - Tatyana P Serkova
- IPAC RAS, Severnyi Proezd, 1, Chernogolovka, Moscow Region, 142432, Russia
| | - Olga M Redkozubova
- IPAC RAS, Severnyi Proezd, 1, Chernogolovka, Moscow Region, 142432, Russia
| | - Elena F Shevtsova
- Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory, 1-3, Moscow 119991, Russia; IPAC RAS, Severnyi Proezd, 1, Chernogolovka, Moscow Region, 142432, Russia
| | - Elena R Milaeva
- Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory, 1-3, Moscow 119991, Russia; IPAC RAS, Severnyi Proezd, 1, Chernogolovka, Moscow Region, 142432, Russia.
| | - Tamara S Kuznetsova
- Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory, 1-3, Moscow 119991, Russia
| | - Nikolay S Zefirov
- Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory, 1-3, Moscow 119991, Russia; IPAC RAS, Severnyi Proezd, 1, Chernogolovka, Moscow Region, 142432, Russia
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24
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Zhou Y, Liu J, Zheng M, Zheng S, Jiang C, Zhou X, Zhang D, Zhao J, Ye D, Zheng M, Jiang H, Liu D, Cheng J, Liu H. Structural optimization and biological evaluation of 1,5-disubstituted pyrazole-3-carboxamines as potent inhibitors of human 5-lipoxygenase. Acta Pharm Sin B 2016; 6:32-45. [PMID: 26904397 PMCID: PMC4724694 DOI: 10.1016/j.apsb.2015.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 11/07/2015] [Accepted: 11/10/2015] [Indexed: 12/11/2022] Open
Abstract
Human 5-lipoxygenase (5-LOX) is a well-validated drug target and its inhibitors are potential drugs for treating leukotriene-related disorders. Our previous work on structural optimization of the hit compound 2 from our in-house collection identified two lead compounds, 3a and 3b, exhibiting a potent inhibitory profile against 5-LOX with IC50 values less than 1 µmol/L in cell-based assays. Here, we further optimized these compounds to prepare a class of novel pyrazole derivatives by opening the fused-ring system. Several new compounds exhibited more potent inhibitory activity than the lead compounds against 5-LOX. In particular, compound 4e not only suppressed lipopolysaccharide-induced inflammation in brain inflammatory cells and protected neurons from oxidative toxicity, but also significantly decreased infarct damage in a mouse model of cerebral ischemia. Molecular docking analysis further confirmed the consistency of our theoretical results and experimental data. In conclusion, the excellent in vitro and in vivo inhibitory activities of these compounds against 5-LOX suggested that these novel chemical structures have a promising therapeutic potential to treat leukotriene-related disorders.
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Affiliation(s)
- Yu Zhou
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Jun Liu
- China Pharmaceutical University, Nanjing 210009, China
| | - Mingyue Zheng
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Shuli Zheng
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience, Soochow University, Suzhou 215006, China
| | - Chunyi Jiang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Xiaomei Zhou
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience, Soochow University, Suzhou 215006, China
| | - Dong Zhang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Jihui Zhao
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Deju Ye
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Mingfang Zheng
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Hualiang Jiang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Dongxiang Liu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- Corresponding authors. Tel.:+86 21 50806600 2302; fax: +86 2150807088 (Dongxiang Liu);Tel./fax: +86 512 65884725 (Jian Cheng);Tel./fax: +86 21 50807042 (Hong Liu).
| | - Jian Cheng
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience, Soochow University, Suzhou 215006, China
- Corresponding authors. Tel.:+86 21 50806600 2302; fax: +86 2150807088 (Dongxiang Liu);Tel./fax: +86 512 65884725 (Jian Cheng);Tel./fax: +86 21 50807042 (Hong Liu).
| | - Hong Liu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- Corresponding authors. Tel.:+86 21 50806600 2302; fax: +86 2150807088 (Dongxiang Liu);Tel./fax: +86 512 65884725 (Jian Cheng);Tel./fax: +86 21 50807042 (Hong Liu).
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25
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Cai H, Huang X, Xu S, Shen H, Zhang P, Huang Y, Jiang J, Sun Y, Jiang B, Wu X, Yao H, Xu J. Discovery of novel hybrids of diaryl-1,2,4-triazoles and caffeic acid as dual inhibitors of cyclooxygenase-2 and 5-lipoxygenase for cancer therapy. Eur J Med Chem 2016; 108:89-103. [DOI: 10.1016/j.ejmech.2015.11.013] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 10/16/2015] [Accepted: 11/06/2015] [Indexed: 12/13/2022]
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26
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Saura P, Maréchal JD, Masgrau L, Lluch JM, González-Lafont À. Computational insight into the catalytic implication of head/tail-first orientation of arachidonic acid in human 5-lipoxygenase: consequences for the positional specificity of oxygenation. Phys Chem Chem Phys 2016; 18:23017-35. [DOI: 10.1039/c6cp03973a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Using a multi-scale approach to search for the arachidonic acid binding modes that determine the catalytic specificity of human 5-LOX.
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Affiliation(s)
- Patricia Saura
- Departament de Química
- Universitat Autonòma de Barcelona
- 08193 Bellaterra
- Spain
- Institut de Biotecnologia i de Biomedicina (IBB)
| | | | - Laura Masgrau
- Institut de Biotecnologia i de Biomedicina (IBB)
- Universitat Autonòma de Barcelona
- 08193 Bellaterra
- Spain
| | - José M. Lluch
- Departament de Química
- Universitat Autonòma de Barcelona
- 08193 Bellaterra
- Spain
- Institut de Biotecnologia i de Biomedicina (IBB)
| | - Àngels González-Lafont
- Departament de Química
- Universitat Autonòma de Barcelona
- 08193 Bellaterra
- Spain
- Institut de Biotecnologia i de Biomedicina (IBB)
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27
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Meng H, McClendon CL, Dai Z, Li K, Zhang X, He S, Shang E, Liu Y, Lai L. Discovery of Novel 15-Lipoxygenase Activators To Shift the Human Arachidonic Acid Metabolic Network toward Inflammation Resolution. J Med Chem 2015; 59:4202-9. [DOI: 10.1021/acs.jmedchem.5b01011] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
| | - Christopher L. McClendon
- Skaggs
School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, California 92093, United States
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28
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Meng H, Liu Y, Lai L. Diverse ways of perturbing the human arachidonic acid metabolic network to control inflammation. Acc Chem Res 2015; 48:2242-50. [PMID: 26237215 DOI: 10.1021/acs.accounts.5b00226] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Inflammation and other common disorders including diabetes, cardiovascular disease, and cancer are often the result of several molecular abnormalities and are not likely to be resolved by a traditional single-target drug discovery approach. Though inflammation is a normal bodily reaction, uncontrolled and misdirected inflammation can cause inflammatory diseases such as rheumatoid arthritis and asthma. Nonsteroidal anti-inflammatory drugs including aspirin, ibuprofen, naproxen, or celecoxib are commonly used to relieve aches and pains, but often these drugs have undesirable and sometimes even fatal side effects. To facilitate safer and more effective anti-inflammatory drug discovery, a balanced treatment strategy should be developed at the biological network level. In this Account, we focus on our recent progress in modeling the inflammation-related arachidonic acid (AA) metabolic network and subsequent multiple drug design. We first constructed a mathematical model of inflammation based on experimental data and then applied the model to simulate the effects of commonly used anti-inflammatory drugs. Our results indicated that the model correctly reproduced the established bleeding and cardiovascular side effects. Multitarget optimal intervention (MTOI), a Monte Carlo simulated annealing based computational scheme, was then developed to identify key targets and optimal solutions for controlling inflammation. A number of optimal multitarget strategies were discovered that were both effective and safe and had minimal associated side effects. Experimental studies were performed to evaluate these multitarget control solutions further using different combinations of inhibitors to perturb the network. Consequently, simultaneous control of cyclooxygenase-1 and -2 and leukotriene A4 hydrolase, as well as 5-lipoxygenase and prostaglandin E2 synthase were found to be among the best solutions. A single compound that can bind multiple targets presents advantages including low risk of drug-drug interactions and robustness regarding concentration fluctuations. Thus, we developed strategies for multiple-target drug design and successfully discovered several series of multiple-target inhibitors. Optimal solutions for a disease network often involve mild but simultaneous interventions of multiple targets, which is in accord with the philosophy of traditional Chinese medicine (TCM). To this end, our AA network model can aptly explain TCM anti-inflammatory herbs and formulas at the molecular level. We also aimed to identify activators for several enzymes that appeared to have increased activity based on MTOI outcomes. Strategies were then developed to predict potential allosteric sites and to discover enzyme activators based on our hypothesis that combined treatment with the projected activators and inhibitors could balance different AA network pathways, control inflammation, and reduce associated adverse effects. Our work demonstrates that the integration of network modeling and drug discovery can provide novel solutions for disease control, which also calls for new developments in drug design concepts and methodologies. With the rapid accumulation of quantitative data and knowledge of the molecular networks of disease, we can expect an increase in the development and use of quantitative disease models to facilitate efficient and safe drug discovery.
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Affiliation(s)
- Hu Meng
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable
and Stable Species, College of Chemistry and Molecular Engineering, ‡Center for Quantitative
Biology, and §Peking−Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Ying Liu
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable
and Stable Species, College of Chemistry and Molecular Engineering, ‡Center for Quantitative
Biology, and §Peking−Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Luhua Lai
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable
and Stable Species, College of Chemistry and Molecular Engineering, ‡Center for Quantitative
Biology, and §Peking−Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
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29
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Liao C, Wang Y, Tan X, Sun L, Liu S. Discovery of novel inhibitors of human S-adenosylmethionine decarboxylase based on in silico high-throughput screening and a non-radioactive enzymatic assay. Sci Rep 2015; 5:10754. [PMID: 26030749 PMCID: PMC5377238 DOI: 10.1038/srep10754] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Accepted: 04/27/2015] [Indexed: 12/12/2022] Open
Abstract
Natural polyamines are small polycationic molecules essential for cell growth and development, and elevated level of polyamines is positively correlated with various cancers. As a rate-limiting enzyme of the polyamine biosynthetic pathway, S-adenosylmethionine decarboxylase (AdoMetDC) has been an attractive drug target. In this report, we present the discovery of novel human AdoMetDC (hAdoMetDC) inhibitors by coupling computational and experimental tools. We constructed a reasonable computational structure model of hAdoMetDC that is compatible with general protocols for high-throughput drug screening, and used this model in in silico screening of hAdoMetDC inhibitors against a large compound library using a battery of computational tools. We also established and validated a simple, economic, and non-radioactive enzymatic assay, which can be adapted for experimental high-throughput screening of hAdoMetDC inhibitors. Finally, we obtained an hAdoMetDC inhibitor lead with a novel scaffold. This study provides both new tools and a new lead for the developing of novel hAdoMetDC inhibitors.
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Affiliation(s)
- Chenzeng Liao
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang 443002, China
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Yanlin Wang
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang 443002, China
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Xiao Tan
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang 443002, China
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Lidan Sun
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang 443002, China
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Sen Liu
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang 443002, China
- College of Medical Science, China Three Gorges University, Yichang 443002, China
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30
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Chen Y, Liu H, Xu S, Wang T, Li W. Targeting microsomal prostaglandin E2synthase-1 (mPGES-1): the development of inhibitors as an alternative to non-steroidal anti-inflammatory drugs (NSAIDs). MEDCHEMCOMM 2015. [DOI: 10.1039/c5md00278h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
AA cascade and several key residues in the 3D structure of mPGES-1.
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Affiliation(s)
- Yuqing Chen
- Department of Medicinal Chemistry, School of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- China
| | | | - Shuang Xu
- Department of Medicinal Chemistry, School of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- China
| | - Tianlin Wang
- Department of Medicinal Chemistry, School of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- China
| | - Wei Li
- Department of Medicinal Chemistry, School of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- China
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31
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Mutahir S, Yar M, Khan MA, Ullah N, Shahzad SA, Khan IU, Mehmood RA, Ashraf M, Nasar R, Pontiki E. Synthesis, characterization, lipoxygenase inhibitory activity and in silico molecular docking of biaryl bis(benzenesulfonamide) and indol-3-yl-hydrazide derivatives. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2014. [DOI: 10.1007/s13738-014-0573-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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32
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Deng N, Forli S, He P, Perryman A, Wickstrom L, Vijayan RSK, Tiefenbrunn T, Stout D, Gallicchio E, Olson AJ, Levy RM. Distinguishing binders from false positives by free energy calculations: fragment screening against the flap site of HIV protease. J Phys Chem B 2014; 119:976-88. [PMID: 25189630 PMCID: PMC4306491 DOI: 10.1021/jp506376z] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
![]()
Molecular docking is a powerful tool
used in drug discovery and
structural biology for predicting the structures of ligand–receptor
complexes. However, the accuracy of docking calculations can be limited
by factors such as the neglect of protein reorganization in the scoring
function; as a result, ligand screening can produce a high rate of
false positive hits. Although absolute binding free energy methods
still have difficulty in accurately rank-ordering binders, we believe
that they can be fruitfully employed to distinguish binders from nonbinders
and reduce the false positive rate. Here we study a set of ligands
that dock favorably to a newly discovered, potentially allosteric
site on the flap of HIV-1 protease. Fragment binding to this site
stabilizes a closed form of protease, which could be exploited for
the design of allosteric inhibitors. Twenty-three top-ranked protein–ligand
complexes from AutoDock were subject to the free energy screening
using two methods, the recently developed binding energy analysis
method (BEDAM) and the standard double decoupling method (DDM). Free
energy calculations correctly identified most of the false positives
(≥83%) and recovered all the confirmed binders. The results
show a gap averaging ≥3.7 kcal/mol, separating the binders
and the false positives. We present a formula that decomposes the
binding free energy into contributions from the receptor conformational
macrostates, which provides insights into the roles of different binding
modes. Our binding free energy component analysis further suggests
that improving the treatment for the desolvation penalty associated
with the unfulfilled polar groups could reduce the rate of false positive
hits in docking. The current study demonstrates that the combination
of docking with free energy methods can be very useful for more accurate
ligand screening against valuable drug targets.
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Affiliation(s)
- Nanjie Deng
- Center for Biophysics & Computational Biology/ICMS, ‡Department of Chemistry, Temple University , Philadelphia, Pennsylvania19122, United States
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33
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Pei J, Yin N, Ma X, Lai L. Systems Biology Brings New Dimensions for Structure-Based Drug Design. J Am Chem Soc 2014; 136:11556-65. [DOI: 10.1021/ja504810z] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jianfeng Pei
- Center
for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Ning Yin
- Center
for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Xiaomin Ma
- Center
for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Luhua Lai
- Center
for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
- Beijing
National Laboratory for Molecular Science, State Key Laboratory for
Structural Chemistry of Unstable and Stable Species, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
- Peking-Tsinghua
Center for Life Sciences, Peking University, Beijing 100871, China
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34
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Shen Q, Chen J, Wang Q, Deng X, Liu Y, Lai L. Discovery of highly potent TNFα inhibitors using virtual screen. Eur J Med Chem 2014; 85:119-26. [PMID: 25078315 DOI: 10.1016/j.ejmech.2014.07.091] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 07/24/2014] [Accepted: 07/24/2014] [Indexed: 12/14/2022]
Abstract
Tumor necrosis factor-α (TNFα) is a validated therapeutic target for various autoimmune disorders such as rheumatoid arthritis and asthma. All TNFα inhibitors currently on the market are biologics, making the development of small molecule alternatives in urgent need. However, only a few successful cases of direct TNFα antagonization in vitro have been reported. Here, we present the identification of several small molecule candidates able to effectively reduce TNFα activity in vitro and in cell assays. Virtual screen targeting TNFα dimer was performed on the SPECS database and 101 compounds were selected for experimental testing. Two compounds, 1 and 2, displayed considerable inhibitory activity. Follow-up structure-activity relationship analysis of compound 1 identified 3 molecules with low micromolar cell-level inhibitory activity. Compound 11 showed an IC50 value of 14 μM, making it among the most potent TNFα small molecule inhibitors reported. These compounds provide new scaffolds for future development of small molecule drugs against TNFα.
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Affiliation(s)
- Qi Shen
- Center for Quantitative Biology, Peking University, Beijing 100871, China
| | - Jing Chen
- Center for Quantitative Biology, Peking University, Beijing 100871, China; BNLMS, State Key Laboratory of Structural Chemistry for Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Qian Wang
- BNLMS, State Key Laboratory of Structural Chemistry for Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xiaobing Deng
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Ying Liu
- Center for Quantitative Biology, Peking University, Beijing 100871, China; BNLMS, State Key Laboratory of Structural Chemistry for Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Luhua Lai
- Center for Quantitative Biology, Peking University, Beijing 100871, China; BNLMS, State Key Laboratory of Structural Chemistry for Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China.
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35
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Qiu S, Chen F, Liu Y, Lai L. Discovery of Novel Secretory Phospholipase A2Inhibitors Using Virtual Screen. Chem Biol Drug Des 2014; 84:216-22. [DOI: 10.1111/cbdd.12307] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Revised: 01/11/2014] [Accepted: 02/14/2014] [Indexed: 12/14/2022]
Affiliation(s)
- Shunchen Qiu
- BNLMS; State Key Laboratory of Structural Chemistry for Unstable and Stable Species; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Fangjin Chen
- Center for Quantitative Biology; Peking University; Beijing 100871 China
| | - Ying Liu
- BNLMS; State Key Laboratory of Structural Chemistry for Unstable and Stable Species; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
- Center for Quantitative Biology; Peking University; Beijing 100871 China
| | - Luhua Lai
- BNLMS; State Key Laboratory of Structural Chemistry for Unstable and Stable Species; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
- Center for Quantitative Biology; Peking University; Beijing 100871 China
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36
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Hu J, Zhu W, Meng H, Liu Y, Wang X, Hu C. Identification of 1, 4-Dihydrothieno[3′, 2′:5, 6]thiopyrano[4, 3-c]pyrazole Derivatives as Human 5-Lipo-oxygenase Inhibitors. Chem Biol Drug Des 2014; 84:642-7. [DOI: 10.1111/cbdd.12356] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 03/05/2014] [Accepted: 04/30/2014] [Indexed: 12/20/2022]
Affiliation(s)
- Jianshu Hu
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory for Structural Chemistry of Unstable and Stable Species; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Wei Zhu
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory for Structural Chemistry of Unstable and Stable Species; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Hu Meng
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory for Structural Chemistry of Unstable and Stable Species; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Ying Liu
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory for Structural Chemistry of Unstable and Stable Species; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Xin Wang
- Key Laboratory of Structure-Based Drug Design & Discovery; Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 China
- School of Pharmaceutical Engineering; Shenyang Pharmaceutical University; Shenyang 110016 China
| | - Chun Hu
- Key Laboratory of Structure-Based Drug Design & Discovery; Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 China
- School of Pharmaceutical Engineering; Shenyang Pharmaceutical University; Shenyang 110016 China
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37
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Pergola C, Gaboriaud-Kolar N, Jestädt N, König S, Kritsanida M, Schaible AM, Li H, Garscha U, Weinigel C, Barz D, Albring KF, Huber O, Skaltsounis AL, Werz O. Indirubin Core Structure of Glycogen Synthase Kinase-3 Inhibitors as Novel Chemotype for Intervention with 5-Lipoxygenase. J Med Chem 2014; 57:3715-23. [DOI: 10.1021/jm401740w] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Carlo Pergola
- Pharmaceutical/Medicinal
Chemistry, Institute of Pharmacy, Friedrich-Schiller-University, Jena 07743, Germany
| | - Nicolas Gaboriaud-Kolar
- Department
of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, University of Athens, Athens 15771, Greece
| | - Nadine Jestädt
- Pharmaceutical/Medicinal
Chemistry, Institute of Pharmacy, Friedrich-Schiller-University, Jena 07743, Germany
| | - Stefanie König
- Pharmaceutical/Medicinal
Chemistry, Institute of Pharmacy, Friedrich-Schiller-University, Jena 07743, Germany
| | - Marina Kritsanida
- Department
of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, University of Athens, Athens 15771, Greece
| | - Anja M. Schaible
- Pharmaceutical/Medicinal
Chemistry, Institute of Pharmacy, Friedrich-Schiller-University, Jena 07743, Germany
| | - Haokun Li
- Pharmaceutical/Medicinal
Chemistry, Institute of Pharmacy, Friedrich-Schiller-University, Jena 07743, Germany
| | - Ulrike Garscha
- Pharmaceutical/Medicinal
Chemistry, Institute of Pharmacy, Friedrich-Schiller-University, Jena 07743, Germany
| | | | | | | | | | - Alexios L. Skaltsounis
- Department
of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, University of Athens, Athens 15771, Greece
| | - Oliver Werz
- Pharmaceutical/Medicinal
Chemistry, Institute of Pharmacy, Friedrich-Schiller-University, Jena 07743, Germany
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38
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Shang E, Wu Y, Liu P, Liu Y, Zhu W, Deng X, He C, He S, Li C, Lai L. Benzo[d]isothiazole 1,1-dioxide derivatives as dual functional inhibitors of 5-lipoxygenase and microsomal prostaglandin E(2) synthase-1. Bioorg Med Chem Lett 2014; 24:2764-7. [PMID: 24794107 DOI: 10.1016/j.bmcl.2014.04.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 03/20/2014] [Accepted: 04/03/2014] [Indexed: 01/09/2023]
Abstract
A series of 6-nitro-3-(m-tolylamino) benzo[d]isothiazole 1,1-dioxide analogues were synthesized and evaluated for their inhibition activity against 5-lipoxygenase (5-LOX) and microsomal prostaglandin E2 synthase (mPGES-1). These compounds can inhibit both enzymes with IC50 values ranging from 0.15 to 23.6μM. One of the most potential compounds, 3g, inhibits 5-LOX and mPGES-1 with IC50 values of 0.6μM, 2.1μM, respectively.
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Affiliation(s)
- Erchang Shang
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yiran Wu
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; Center for Quantitative Biology, Peking University, Beijing 100871, China
| | - Pei Liu
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Ying Liu
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; Center for Quantitative Biology, Peking University, Beijing 100871, China.
| | - Wei Zhu
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xiaobing Deng
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Chong He
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Shan He
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Cong Li
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Luhua Lai
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; Center for Quantitative Biology, Peking University, Beijing 100871, China; Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
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39
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Development of 3,5-dinitrobenzoate-based 5-lipoxygenase inhibitors. Bioorg Med Chem 2014; 22:2396-402. [DOI: 10.1016/j.bmc.2014.03.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 03/05/2014] [Accepted: 03/06/2014] [Indexed: 01/25/2023]
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40
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Ding Q, Liu T, Zheng Q, Zhang Y, Long L, Peng Y. Rh(iii)-catalyzed tandem oxidative olefination-cyclization of aryl sulfonamides. RSC Adv 2014. [DOI: 10.1039/c4ra09041a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
An efficient Rh(iii)-catalyzed ortho-selective C–H activation and tandem oxidative olefination-cyclization of aryl sulfonamides is described. The protocol has been applied to various substrates with good functional group tolerance.
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Affiliation(s)
- Qiuping Ding
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang, China
| | - Tong Liu
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang, China
| | - Qiang Zheng
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang, China
| | - Yadong Zhang
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang, China
| | - Ling Long
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang, China
| | - Yiyuan Peng
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang, China
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41
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Zhao X, Lu W, Song C, Huang J. Detection of mammalian 5‐lipoxygenase activity using the fluorescent probe dihydrorhodamine 123. EUR J LIPID SCI TECH 2013. [DOI: 10.1002/ejlt.201300104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xue Zhao
- Shanghai Key Laboratory of New Drug Design, Shanghai Key Laboratory of Chemical Biology, School of PharmacyEast China University of Science and TechnologyShanghaiChina
| | - Weiqiang Lu
- The Institute of Biomedical Sciences and School of Life SciencesEast China Normal UniversityShanghaiChina
| | - Cheng Song
- Department of ChemistryJiangxi Normal UniversityNanchangChina
| | - Jin Huang
- Shanghai Key Laboratory of New Drug Design, Shanghai Key Laboratory of Chemical Biology, School of PharmacyEast China University of Science and TechnologyShanghaiChina
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42
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Ligand clouds around protein clouds: a scenario of ligand binding with intrinsically disordered proteins. PLoS Comput Biol 2013; 9:e1003249. [PMID: 24098099 PMCID: PMC3789766 DOI: 10.1371/journal.pcbi.1003249] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 08/15/2013] [Indexed: 11/19/2022] Open
Abstract
Intrinsically disordered proteins (IDPs) were found to be widely associated with human diseases and may serve as potential drug design targets. However, drug design targeting IDPs is still in the very early stages. Progress in drug design is usually achieved using experimental screening; however, the structural disorder of IDPs makes it difficult to characterize their interaction with ligands using experiments alone. To better understand the structure of IDPs and their interactions with small molecule ligands, we performed extensive simulations on the c-Myc₃₇₀₋₄₀₉ peptide and its binding to a reported small molecule inhibitor, ligand 10074-A4. We found that the conformational space of the apo c-Myc₃₇₀₋₄₀₉ peptide was rather dispersed and that the conformations of the peptide were stabilized mainly by charge interactions and hydrogen bonds. Under the binding of the ligand, c-Myc₃₇₀₋₄₀₉ remained disordered. The ligand was found to bind to c-Myc₃₇₀₋₄₀₉ at different sites along the chain and behaved like a 'ligand cloud'. In contrast to ligand binding to more rigid target proteins that usually results in a dominant bound structure, ligand binding to IDPs may better be described as ligand clouds around protein clouds. Nevertheless, the binding of the ligand and a non-ligand to the c-Myc₃₇₀₋₄₀₉ target could be clearly distinguished. The present study provides insights that will help improve rational drug design that targets IDPs.
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43
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Steinhilber D, Hofmann B. Recent advances in the search for novel 5-lipoxygenase inhibitors. Basic Clin Pharmacol Toxicol 2013; 114:70-7. [PMID: 23953428 DOI: 10.1111/bcpt.12114] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Accepted: 07/17/2013] [Indexed: 12/28/2022]
Abstract
5-Lipoxygenase (5-LO) is an important enzyme of the arachidonic acid cascade and catalyses with the help of FLAP, the 5-LO-activating protein, the formation of bioactive leukotrienes (LTs). LTs are inflammatory mediators playing a pathophysiological role in different diseases such as asthma, allergic rhinitis as well as cardiovascular diseases and certain types of cancer. Up to now, only one 5-LO inhibitor is on the market, zileuton for the treatment of asthma. With the rising number of indications for anti-LT therapy, 5-LO inhibitor drug development becomes more and more important. This MiniReview gives an update on 5-LO inhibitors currently under clinical development. Furthermore, the recent advances in the search for novel 5-lipoxygenase inhibitors with a focus on computational methods are summarized. Currently, licofelone is the compound with the highest clinical development status (completed phase III trials). 5-LO inhibitor screening programmes based on computational methods could deliver several promising drug-like new molecules. These activities can be expected to be driven by the newly resolved structure of human 5-LO in the future, enabling structure-based drug design. For the prospective drugs in late-stage clinical development, the future will show their clinical safety and efficacy in the particular diseases.
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Affiliation(s)
- Dieter Steinhilber
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Frankfurt, Germany
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He S, Li C, Liu Y, Lai L. Discovery of Highly Potent Microsomal Prostaglandin E2 Synthase 1 Inhibitors Using the Active Conformation Structural Model and Virtual Screen. J Med Chem 2013; 56:3296-309. [DOI: 10.1021/jm301900x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shan He
- BNLMS, State Key Laboratory for Structural
Chemistry
of Unstable and Stable Species, College of Chemistry and Molecular
Engineering, Peking University, Beijing
100871, China
| | - Cong Li
- BNLMS, State Key Laboratory for Structural
Chemistry
of Unstable and Stable Species, College of Chemistry and Molecular
Engineering, Peking University, Beijing
100871, China
| | - Ying Liu
- BNLMS, State Key Laboratory for Structural
Chemistry
of Unstable and Stable Species, College of Chemistry and Molecular
Engineering, Peking University, Beijing
100871, China
| | - Luhua Lai
- BNLMS, State Key Laboratory for Structural
Chemistry
of Unstable and Stable Species, College of Chemistry and Molecular
Engineering, Peking University, Beijing
100871, China
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Atemnkeng VA, Pink M, Schmitz-Spanke S, Wu XJ, Dong LL, Zhao KH, May C, Laufer S, Langer B, Kaiser A. Deoxyhypusine hydroxylase from Plasmodium vivax, the neglected human malaria parasite: molecular cloning, expression and specific inhibition by the 5-LOX inhibitor zileuton. PLoS One 2013; 8:e58318. [PMID: 23505486 PMCID: PMC3591309 DOI: 10.1371/journal.pone.0058318] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Accepted: 02/01/2013] [Indexed: 11/18/2022] Open
Abstract
Primaquine, an 8-aminoquinoline, is the only drug which cures the dormant hypnozoites of persistent liver stages from P. vivax. Increasing resistance needs the discovery of alternative pathways as drug targets to develop novel drug entities. Deoxyhypusine hydroxylase (DOHH) completes hypusine biosynthesis in eukaryotic initiation factor (eIF-5A) which is the only cellular protein known to contain the unusual amino acid hypusine. Modified EIF-5A is important for proliferation of the malaria parasite. Here, we present the first successful cloning and expression of DOHH from P. vivax causing tertiary malaria. The nucleic acid sequence of 1041 bp encodes an open reading frame of 346 amino acids. Histidine tagged expression of P. vivax DOHH detected a protein of 39.01 kDa in E. coli. The DOHH protein from P. vivax shares significant amino acid identity to the simian orthologues from P. knowlesi and P. yoelii strain H. In contrast to P. falciparum only four E-Z-type HEAT-like repeats are present in P. vivax DOHH with different homology to phycocyanin lyase subunits from cyanobacteria and in proteins participating in energy metabolism of Archaea and Halobacteria. However, phycocyanin lyase activity is absent in P. vivax DOHH. The dohh gene is present as a single copy gene and transcribed throughout the whole erythrocytic cycle. Specific inhibition of recombinant P. vivax DOHH is possible by complexing the ferrous iron with zileuton, an inhibitor of mammalian 5-lipoxygenase (5-LOX). Ferrous iron in the active site of 5-LOX is coordinated by three conserved histidines and the carboxylate of isoleucine(673). Zileuton inhibited the P. vivax DOHH protein with an IC50 of 12,5 nmol determined by a relative quantification by GC/MS. By contrast, the human orthologue is only less affected with an IC50 of 90 nmol suggesting a selective iron-complexing strategy for the parasitic enzyme.
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Affiliation(s)
| | - Mario Pink
- Occupational Medicine, University of Duisburg-Essen, Essen, Germany
| | | | - Xian-Jun Wu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, PR China
| | - Liang-Liang Dong
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, PR China
| | - Kai-Hong Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, PR China
| | - Caroline May
- Immune Proteomics, Medizinisches Proteom-Center, Ruhr-University Bochum, Bochum, Germany
| | - Stefan Laufer
- Pharmazeutische Chemie, Pharmazeutisches Institut, Eberhard-Karls-Universität Tübingen, Tübingen, Germany
| | - Barbara Langer
- Institute of Pharmacogenetics, University of Duisburg-Essen, Essen, Germany
| | - Annette Kaiser
- Institute of Pharmacogenetics, University of Duisburg-Essen, Essen, Germany
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Gu S, Yin N, Pei J, Lai L. Understanding traditional Chinese medicine anti-inflammatory herbal formulae by simulating their regulatory functions in the human arachidonic acid metabolic network. MOLECULAR BIOSYSTEMS 2013; 9:1931-8. [DOI: 10.1039/c3mb25605g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Yin N, Pei J, Lai L. A comprehensive analysis of the influence of drug binding kinetics on drug action at molecular and systems levels. MOLECULAR BIOSYSTEMS 2013; 9:1381-9. [DOI: 10.1039/c3mb25471b] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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El-Ansary A, Al-Ayadhi L. Lipid mediators in plasma of autism spectrum disorders. Lipids Health Dis 2012; 11:160. [PMID: 23170784 PMCID: PMC3557222 DOI: 10.1186/1476-511x-11-160] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Accepted: 10/26/2012] [Indexed: 12/31/2022] Open
Abstract
Background Inflammation is increasingly recognized as being of both physiological and pathological importance in the immature brain. Cerebellar pathology occurs in autism, as a neurodevelopmental disorder with genetic and environmental origins. The genesis of this disorder is still not understood but inflammation in utero or early in childhood is an environmental risk factor. Methods Prostaglandin E2 (PGE2), cysteinyl leukotriene as two important lipid mediators together with 8 isoprostane as marker of oxidative stress were measured using ELISA in plasma of 20 male autistic patients compared to 19 age and gender matching control participants. Results PGE2, leukotrienes and isoprostanes recorded significantly elevated levels in autistics compared to controls. Role of these measured parameters in inflammation and autoimmunity as two etiological factors in autism were discussed in details. Conclusion Receiver Operating Characteristic (ROC) curve analysis shows satisfactory values of area under the curve (AUC) which could reflect the high degree of specificity and sensitivity of the altered PGE2, leukotrienes and isoprostanes as predictive biomarkers in autistic patients from Saudi Arabia.
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Affiliation(s)
- Afaf El-Ansary
- Biochemistry Department, Science College, King Saud University, Riyadh, Saudi Arabia.
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