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Dubey A, Sivaraman J. Investigating anti-inflammatory actions of marine algal compound against lipoxygenase concentrating on therapeutic applications through computational approach. J Biomol Struct Dyn 2024; 42:9050-9063. [PMID: 37643084 DOI: 10.1080/07391102.2023.2249115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 08/12/2023] [Indexed: 08/31/2023]
Abstract
Inflammation is the preliminary response given to any possible harmful stimuli including infections, injury or stress by immune system where neutrophils and macrophages gets activated and produces mediators, such as nitric oxide and cytokines that serves as biomarkers of inflammation. Lipoxygenases are enzymes that peroxidises lipids and are involved in the pathogenesis of several diseases including inflammatory diseases. These are oxidative enzymes comprising a non-heme iron atom in active site and are convoluted in inflammatory reactions. Fucoidan is sulphated polysaccharide that has numerous pharmacological implications. Implications of fucoidan on inflammatory diseases are still an objective of rigorous research. Therefore, this study focusses on investigating lipoxygenase inhibitory activities of fucoidan. The mechanism of lipoxygenase inhibitory activities of fucoidan was studied via molecular docking and molecular dynamics simulations. The docking score produced by the binding of the fucoidan to the lipoxygenase was - 6.69 kcal/mol whereas, the docking score in case of Aspirin and Zileuton were -5.8 kcal/mol and -7.0 kcal/mol and it was found that fucoidan makes hydrogen bonds with lipoxygenase protein through polar amino acid glutamine at GLN 514. The results obtained from molecular dynamics simulations proposed the development of a stable complex between fucoidan and lipoxygenase due to the establishment of favourable interactions with amino acid residues and indicated efficient results when compared with Aspirin and Zileuton. This study suggested that fucoidan had anti-inflammatory potentials and thus can be used as a promising drug candidate against inflammation.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Akanksha Dubey
- Computational Drug Design Lab, Department of Biotechnology, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Jayanthi Sivaraman
- Computational Drug Design Lab, Department of Biotechnology, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
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Cao Q, Fan X, Xu J, Shi Z, Wang W, Wang Z, Sun Y, Xia Q, Zhou C, Pan D. Insights into the molecular mechanisms of lipid metabolism of air-dried goose on the formation of flavor substances by co-inoculation of lactic acid bacteria and staphylococcus based on GC-MS and lipidomics. Food Chem 2024; 463:141388. [PMID: 39342771 DOI: 10.1016/j.foodchem.2024.141388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 09/07/2024] [Accepted: 09/20/2024] [Indexed: 10/01/2024]
Abstract
Microorganisms and lipids always interact in a complex way in the meat matrix, which affects the flavor of meat products. This study aimed to examine the impact of complex fermentation with distinct microorganisms on fat oxidation, lipid profile, and the biochemical pathways involved in flavor substance formation. GC-MS analysis revealed that 12 key volatile substances including hexanal, heptanal, benzeneacetaldehyde, decanal, 1-nonanol, 1-hexanol, 1-octen-3-ol were responsible for the flavor variations in geese. Lipidomics analysis of three groups identified 440 lipid molecules, with triglycerides and glycerophospholipids being the most abundant categories. Spearman correlation analysis showed that 4 key volatile substances exhibited positive correlations with lysophosphatidylethanolamines, lysophosphatidycholines, phosphatidylcholines, phosphatidylethanolamines. The data presented herein facilitate an understanding of the lipid dynamics during fermentation and provide insights into the potential for controlling the flavor quality of fermented air-dried meat products.
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Affiliation(s)
- Qiongfang Cao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Xiankang Fan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China; College of Food Science and Technology, Hunan Agricultural University, Changsha 410114, China.
| | - Jue Xu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Zihang Shi
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Wei Wang
- Meat Processing Key Laboratory of Sichuan Province, Chengdu University, Chengdu, China
| | - Zhaoshan Wang
- Jiangsu Ecolovo Food Limited Company, Suqian 223800, China
| | - Yangying Sun
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Qiang Xia
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Changyu Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Daodong Pan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China.
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Jiménez-Franco A, Castañé H, Martínez-Navidad C, Placed-Gallego C, Hernández-Aguilera A, Fernández-Arroyo S, Samarra I, Canela-Capdevila M, Arenas M, Zorzano A, Hernández-Alvarez MI, Castillo DD, Paris M, Menendez JA, Camps J, Joven J. Metabolic adaptations in severe obesity: Insights from circulating oxylipins before and after weight loss. Clin Nutr 2024; 43:246-258. [PMID: 38101315 DOI: 10.1016/j.clnu.2023.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 11/29/2023] [Accepted: 12/04/2023] [Indexed: 12/17/2023]
Abstract
BACKGROUND The relationship between lipid mediators and severe obesity remains unclear. Our study investigates the impact of severe obesity on plasma concentrations of oxylipins and fatty acids and explores the consequences of weight loss. METHODS In the clinical trial identifier NCT05554224 study, 116 patients with severe obesity and 63 overweight/obese healthy controls matched for age and sex (≈2:1) provided plasma. To assess the effect of surgically induced weight loss, we requested paired plasma samples from 44 patients undergoing laparoscopic sleeve gastrectomy one year after the procedure. Oxylipins were measured using ultra-high-pressure liquid chromatography coupled to a triple quadrupole mass spectrometer via semi-targeted lipidomics. Cytokines and markers of interorgan crosstalk were measured using enzyme-linked immunosorbent assays. RESULTS We observed significantly elevated levels of circulating fatty acids and oxylipins in patients with severe obesity compared to their metabolically healthier overweight/obese counterparts. Our findings indicated that sex and liver disease were not confounding factors, but we observed weak correlations in plasma with circulating adipokines, suggesting the influence of adipose tissue. Importantly, while weight loss restored the balance in circulating fatty acids, it did not fully normalize the oxylipin profile. Before surgery, oxylipins derived from lipoxygenase activity, such as 12-HETE, 11-HDoHE, 14-HDoHE, and 12-HEPE, were predominant. However, one year following laparoscopic sleeve gastrectomy, we observed a complex shift in the oxylipin profile, favoring species from the cyclooxygenase pathway, particularly proinflammatory prostanoids like TXB2, PGE2, PGD2, and 12-HHTrE. This transformation appears to be linked to a reduction in adiposity, underscoring the role of lipid turnover in the development of metabolic disorders associated with severe obesity. CONCLUSIONS Despite the reduction in fatty acid levels associated with weight loss, the oxylipin profile shifts towards a predominance of more proinflammatory species. These observations underscore the significance of seeking mechanistic approaches to address severe obesity and emphasize the importance of closely monitoring the metabolic adaptations after weight loss.
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Affiliation(s)
- Andrea Jiménez-Franco
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | - Helena Castañé
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | - Cristian Martínez-Navidad
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | - Cristina Placed-Gallego
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | - Anna Hernández-Aguilera
- Department of Pathology, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | | | - Iris Samarra
- Center for Omics Sciences, EURECAT-Technology Center of Catalonia, Reus, Spain
| | - Marta Canela-Capdevila
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain; Department of Radiation Oncology, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | - Meritxell Arenas
- Department of Radiation Oncology, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | - Antonio Zorzano
- Department de Bioquímica i Biomedicina Molecular, Facultat de Biología, Barcelona, Spain; Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Spain
| | - María Isabel Hernández-Alvarez
- Department de Bioquímica i Biomedicina Molecular, Facultat de Biología, Barcelona, Spain; Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Spain
| | - Daniel Del Castillo
- Servei de Cirurgia, Hospital Sant Joan de Reus, Institut d'Investigació Sanitària Pere Virgili. Avinguda, Departament de Medicina i Cirurgia, Universitat Rovira i Virgili, Reus, Spain
| | - Marta Paris
- Servei de Cirurgia, Hospital Sant Joan de Reus, Institut d'Investigació Sanitària Pere Virgili. Avinguda, Departament de Medicina i Cirurgia, Universitat Rovira i Virgili, Reus, Spain
| | - Javier A Menendez
- Metabolism and Cancer Group, Program Against Cancer Therapeutic Resistance (ProCURE), Catalan Institute of Oncology, Girona, Spain; Girona Biomedical Research Institute, Girona, Spain
| | - Jordi Camps
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain.
| | - Jorge Joven
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain.
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Sun M, Yuan M, Wang H, Yin R, Yan C, Yin M, Su Z, Lei X, Fu X, Sun S, Huang Y, Xu H, Chen S. Development of an online UPLC-PDA-ESI-Q-TOF-MS-LOX-FLD system for rapid screening of anti-inflammatory compounds in Polygala tenuifolia Willd. J Pharm Biomed Anal 2023; 229:115353. [PMID: 36965376 DOI: 10.1016/j.jpba.2023.115353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 03/03/2023] [Accepted: 03/19/2023] [Indexed: 03/27/2023]
Abstract
In this study, the first ultra-high performance liquid chromatography-photo-diode array-electrospray ionization-quadrupole-time-of-flight-mass spectrometry-lipoxygenase-fluorescence detector (UPLC-PDA-ESI-Q-TOF-MS-LOX-FLD) online system was developed for the identification and evaluation of anti-inflammatory active ingredients in Polygala tenuifolia Willd. Using this system, the UPLC fingerprints, mass fragments and LOX-binding peak profiles in the samples were rapidly and simultaneously obtained. A total of 101 compounds were isolated and identified and 38 compounds (11 oligosaccharide esters, nine xanthones, 17 saponins, and one glycosyloxyflavone) showed strong LOX-binding activity. Six compounds were selected to study their LOX-binding ability, and the results indicated that the content of the six compounds had a good linear relationship with the LOX-binding ability, and it was found that the substitution position, the type of substituent and the number of glycosyl groups all had a certain influence on the LOX-binding ability of the compounds. The LOX-binding activities of 10 compounds were verified by the surface plasmon resonance (SPR) technique and the activity results were consistent with the online system. After validation, we identified 7 active compounds that combined with LOX to exert anti-inflammatory effects for the first time. All the results fully demonstrate the efficiency, stability and reliability of the online system and this work provides an exemplary and useful method for the rapid screening of potential anti-inflammatory active compounds in P. tenuifolia and other traditional Chinese medicines. At the same time, it provides a new direction for screening small molecule inhibitors of enzymes like LOX.
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Affiliation(s)
- Mimi Sun
- Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi & Education Ministry, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi University of Chinese Medicine, Xianyang 712046, China.
| | - Mengmeng Yuan
- Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi & Education Ministry, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi University of Chinese Medicine, Xianyang 712046, China.
| | - Hong Wang
- School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Runxin Yin
- School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Chenjia Yan
- School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Meihua Yin
- Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi & Education Ministry, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi University of Chinese Medicine, Xianyang 712046, China.
| | - Zenghu Su
- Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi & Education Ministry, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi University of Chinese Medicine, Xianyang 712046, China.
| | - Xinyu Lei
- School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Xiangyu Fu
- School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Senfeng Sun
- School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Yazhuo Huang
- School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Hongbo Xu
- Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi & Education Ministry, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi University of Chinese Medicine, Xianyang 712046, China.
| | - Shizhong Chen
- School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
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5
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Channar PA, Alharthy RD, Ejaz SA, Saeed A, Iqbal J. Synthesis, Biological Evaluation, and Molecular Dynamics of Carbothioamides Derivatives as Carbonic Anhydrase II and 15-Lipoxygenase Inhibitors. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248723. [PMID: 36557863 PMCID: PMC9785969 DOI: 10.3390/molecules27248723] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/28/2022] [Accepted: 12/02/2022] [Indexed: 12/13/2022]
Abstract
A series of hydrazine-1-carbothioamides derivatives (3a-3j) were synthesized and analyzed for inhibitory potential towards bovine carbonic anhydrase II (b-CA II) and 15-lipoxygenase (15-LOX). Interestingly, four derivatives, 3b, 3d, 3g, and 3j, were found to be selective inhibitors of CA II, while other derivatives exhibited CA II and 15-LOX inhibition. In silico studies of the most potent inhibitors of both b-CA II and 15-LOX were carried out to find the possible binding mode of compounds in their active site. Furthermore, MD simulation results confirmed that these ligands are stably bound to the two targets, while the binding energy further confirmed the inhibitory effects of the 3h compound. As these compounds may have a role in particular diseases, the reported compounds are of great relevance for future applications in the field of medicinal chemistry.
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Affiliation(s)
- Pervaiz Ali Channar
- Department of Basic sciences and Humanities, Faculty of Information Sciences and Humanities, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Rima D. Alharthy
- Chemistry Department, Faculty of Science and Arts, King Abdulaziz University, Rabigh 21911, Saudi Arabia
| | - Syeda Abida Ejaz
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Aamer Saeed
- Department of Chemistry, Quaid-I-Azam University, Islamabad 45320, Pakistan
- Correspondence: (A.S.); or (J.I.)
| | - Jamshed Iqbal
- Center for Advanced Drug Research, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
- Correspondence: (A.S.); or (J.I.)
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Polymorphisms in genes expressed during amelogenesis and their association with dental caries: a case–control study. Clin Oral Investig 2022; 27:1681-1695. [PMID: 36422720 PMCID: PMC10102052 DOI: 10.1007/s00784-022-04794-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 11/13/2022] [Indexed: 11/25/2022]
Abstract
Abstract
Objectives
Dental caries is a widespread multifactorial disease, caused by the demineralization of hard dental tissues. Susceptibility to dental caries is partially genetically conditioned; this study was aimed at finding an association of selected single nucleotide polymorphisms (SNPs) in genes encoding proteins involved in amelogenesis with this disease in children.
Materials and methods
In this case–control study, 15 SNPs in ALOX15, AMBN, AMELX, KLK4, TFIP11, and TUFT1 genes were analyzed in 150 children with primary dentition and 611 children with permanent teeth with/without dental caries from the European Longitudinal Study of Pregnancy and Childhood (ELSPAC) cohort.
Results
Dental caries in primary dentition was associated with SNPs in AMELX (rs17878486) and KLK4 (rs198968, rs2242670), and dental caries in permanent dentition with SNPs in AMELX (rs17878486) and KLK4 (rs2235091, rs2242670, rs2978642), (p ≤ 0.05). No significant differences between cases and controls were observed in the allele or genotype frequencies of any of the selected SNPs in ALOX15, AMBN, TFIP11, and TUFT1 genes (p > 0.05). Some KLK4 haplotypes were associated with dental caries in permanent dentition (p ≤ 0.05).
Conclusions
Based on this study, we found that although the SNPs in AMELX and KLK4 are localized in intronic regions and their functional significance has not yet been determined, they are associated with susceptibility to dental caries in children.
Clinical relevance
AMELX and KLK4 variants could be considered in the risk assessment of dental caries, especially in permanent dentition, in the European Caucasian population.
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The Role of 12/15-Lipoxygenase and Its Various Metabolites Generated from Multiple Polyunsaturated Fatty Acids as Substrates in Inflammatory Responses. BIOMED RESEARCH INTERNATIONAL 2022; 2022:4589191. [PMID: 36199753 PMCID: PMC9527411 DOI: 10.1155/2022/4589191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/23/2022] [Accepted: 09/07/2022] [Indexed: 11/22/2022]
Abstract
12/15-lipoxygenase (12/15-LOX) is a member of the lipoxygenase family, which can catalyze a variety of polyunsaturated fatty acids (PUFA) to produce different metabolites, such as 12-hydroxyeicosatetraenoic acid (12-HETE), 15-HETE, lipoxin (LX), hepoxilin, resolvin, protectin, and maresins. 12/15-LOX and its metabolites take part in inflammatory responses and mediate related signalling pathways, playing an essential role in various inflammatory diseases. So the definition, catalytic substrates, metabolites of 12/15-lipoxygenase, and their roles in inflammatory responses are reviewed in this article.
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Sabbir MG, Wigle JT, Taylor CG, Zahradka P. Growth State-Dependent Expression of Arachidonate Lipoxygenases in the Human Endothelial Cell Line EA.hy926. Cells 2022; 11:cells11162478. [PMID: 36010555 PMCID: PMC9406857 DOI: 10.3390/cells11162478] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 08/05/2022] [Accepted: 08/07/2022] [Indexed: 11/30/2022] Open
Abstract
Endothelial cells regulate vascular homeostasis through the secretion of various paracrine molecules, including bioactive lipids, but little is known regarding the enzymes responsible for generating these lipids under either physiological or pathophysiological conditions. Arachidonate lipoxygenase (ALOX) expression was therefore investigated in confluent and nonconfluent EA.h926 endothelial cells, which represent the normal quiescent and proliferative states, respectively. mRNAs for ALOX15, ALOX15B, and ALOXE3 were detected in EA.hy926 cells, with the highest levels present in confluent cells compared to nonconfluent cells. In contrast, ALOX5, ALOX12, and ALOX12B mRNAs were not detected. At the protein level, only ALOX15B and ALOXE3 were detected but only in confluent cells. ALOXE3 was also observed in confluent human umbilical artery endothelial cells (HUAEC), indicating that its expression, although previously unreported, may be a general feature of endothelial cells. Exposure to laminar flow further increased ALOXE3 levels in EA.hy926 cells and HUAECs. The evidence obtained in this study indicates that proliferative status and shear stress are both important factors that mediate endothelial ALOX gene expression. The presence of ALOX15B and ALOXE3 exclusively in quiescent human endothelial cells suggests their activity likely contributes to the maintenance of a healthy endothelium.
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Affiliation(s)
- Mohammad G. Sabbir
- Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada
| | - Jeffrey T. Wigle
- Institute of Cardiovascular Sciences, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada
- Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Carla G. Taylor
- Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Peter Zahradka
- Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- Correspondence: ; Tel.: +204-235-3507; Fax: +204-237-4018
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Biswas P, Datta C, Rathi P, Bhattacharjee A. Fatty acids and their lipid mediators in the induction of cellular apoptosis in cancer cells. Prostaglandins Other Lipid Mediat 2022; 160:106637. [PMID: 35341977 DOI: 10.1016/j.prostaglandins.2022.106637] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 02/28/2022] [Accepted: 03/18/2022] [Indexed: 01/06/2023]
Abstract
The oxygenation of polyunsaturated fatty acids such as arachidonic and linoleic acid through enzymes like lipoxygenases (LOXs) are common and often leads to the production of various bioactive lipids that are important both in acute inflammation and its resolution and thus in disease progression. Amongst the several isoforms of LOX that are expressed in mammals, 15-lipoxygenase (15-LOX) has shown to be crucial in the context of inflammation. Moreover, being expressed in cells of the immune system, as well as in epithelial cells; the enzyme has been shown to crosstalk with a number of important signalling pathways. Mounting evidences from recent reports suggest that 15-LOX has anti-cancer activities which are dependent or independent of its metabolites, and is executed through several downstream pathways like cGMP, PPAR, p53, p21 and NAG-1. However, it is still unclear whether the up-regulation of 15-LOX is associated with cancer cell apoptosis. Monoamine oxidase A (MAO-A), on the other hand, is a mitochondrial flavoenzyme which is believed to be involved in the pathogenesis of atherosclerosis and inflammation and in many other neurological disorders. MAO-A has also been reported as a potential therapeutic target in different types of cancers like prostate cancer, lung cancer etc. In this review, we discussed about the role of fatty acids and their lipid mediators in cancer cell apoptosis. Here we particularly focused on the contribution of oxidative enzymes like 15-LOX and MAO-A in mediating apoptosis in lung cancer cell after fatty acid induction.
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Affiliation(s)
- Pritam Biswas
- Department of Biotechnology, National Institute of Technology, Durgapur 713209, West Bengal, India
| | - Chandreyee Datta
- Department of Biotechnology, National Institute of Technology, Durgapur 713209, West Bengal, India
| | - Parul Rathi
- Department of Biotechnology, National Institute of Technology, Durgapur 713209, West Bengal, India
| | - Ashish Bhattacharjee
- Department of Biotechnology, National Institute of Technology, Durgapur 713209, West Bengal, India.
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Synthesis of and molecular docking studies of azomethine- tethered sulfonamides as carbonic anhydrase II & 15-lipoxygenase inhibitors. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130821] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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CENGİZ S, CAVAS L. Can soybean lipoxygenases be real models for mammalian lipoxygenases? A bioinformatics approach. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2020. [DOI: 10.18596/jotcsa.785109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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12
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dos Santos Maia M, Rodrigues GCS, de Sousa NF, Scotti MT, Scotti L, Mendonça-Junior FJB. Identification of New Targets and the Virtual Screening of Lignans against Alzheimer's Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:3098673. [PMID: 32879651 PMCID: PMC7448245 DOI: 10.1155/2020/3098673] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/22/2020] [Accepted: 07/17/2020] [Indexed: 02/08/2023]
Abstract
Alzheimer's disease (AD) is characterized by the progressive disturbance in cognition and affects approximately 36 million people, worldwide. However, the drugs used to treat this disease are only moderately effective and do not alter the course of the neurodegenerative process. This is because the pathogenesis of AD is mainly associated with oxidative stress, and current drugs only target two enzymes involved in neurotransmission. Therefore, the present study sought to identify potential multitarget compounds for enzymes that are directly or indirectly involved in the oxidative pathway, with minimal side effects, for AD treatment. A set of 159 lignans were submitted to studies of QSAR and molecular docking. A combined analysis was performed, based on ligand and structure, followed by the prediction of absorption, distribution, metabolism, excretion, and toxicity (ADMET) properties. The results showed that the combined analysis was able to select 139 potentially active and multitarget lignans targeting two or more enzymes, among them are c-Jun N-terminal kinase 3 (JNK-3), protein tyrosine phosphatase 1B (PTP1B), nicotinamide adenine dinucleotide phosphate oxidase 1 (NOX1), NADPH quinone oxidoreductase 1 (NQO1), phosphodiesterase 5 (PDE5), nuclear factor erythroid 2-related factor 2 (Nrf2), cycloxygenase 2 (COX-2), and inducible nitric oxide synthase (iNOS). The authors conclude that compounds (06) austrobailignan 6, (11) anolignan c, (19) 7-epi-virolin, (64) 6-[(2R,3R,4R,5R)-3,4-dimethyl-5-(3,4,5-trimethoxyphenyl)oxolan-2-yl]-4-methoxy-1,3-benzodioxole, (116) ococymosin, and (135) mappiodoinin b have probabilities that confer neuroprotection and antioxidant activity and represent potential alternative AD treatment drugs or prototypes for the development of new drugs with anti-AD properties.
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Affiliation(s)
- Mayara dos Santos Maia
- Laboratory of Cheminformatics, Program of Natural and Synthetic Bioactive Products (PgPNSB), Health Sciences Center, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Gabriela Cristina Soares Rodrigues
- Laboratory of Cheminformatics, Program of Natural and Synthetic Bioactive Products (PgPNSB), Health Sciences Center, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Natália Ferreira de Sousa
- Laboratory of Cheminformatics, Program of Natural and Synthetic Bioactive Products (PgPNSB), Health Sciences Center, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Marcus Tullius Scotti
- Laboratory of Cheminformatics, Program of Natural and Synthetic Bioactive Products (PgPNSB), Health Sciences Center, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Luciana Scotti
- Laboratory of Cheminformatics, Program of Natural and Synthetic Bioactive Products (PgPNSB), Health Sciences Center, Federal University of Paraíba, João Pessoa, PB, Brazil
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Multiple Roles of Diatom-Derived Oxylipins within Marine Environments and Their Potential Biotechnological Applications. Mar Drugs 2020; 18:md18070342. [PMID: 32629777 PMCID: PMC7401250 DOI: 10.3390/md18070342] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/22/2020] [Accepted: 06/24/2020] [Indexed: 02/07/2023] Open
Abstract
The chemical ecology of marine diatoms has been the subject of several studies in the last decades, due to the discovery of oxylipins with multiple simultaneous functions including roles in chemical defence (antipredator, allelopathic and antibacterial compounds) and/or cell-to-cell signalling. Diatoms represent a fundamental compartment of marine ecosystems because they contribute to about 45% of global primary production even if they represent only 1% of the Earth’s photosynthetic biomass. The discovery that they produce several toxic metabolites deriving from the oxidation of polyunsaturated fatty acids, known as oxylipins, has changed our perspectives about secondary metabolites shaping plant–plant and plant–animal interactions in the oceans. More recently, their possible biotechnological potential has been evaluated, with promising results on their potential as anticancer compounds. Here, we focus on some recent findings in this field obtained in the last decade, investigating the role of diatom oxylipins in cell-to-cell communication and their negative impact on marine biota. Moreover, we also explore and discuss the possible biotechnological applications of diatom oxylipins.
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14
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Narreddula VR, Sadowski P, Boase NRB, Marshall DL, Poad BLJ, Trevitt AJ, Mitchell TW, Blanksby SJ. Structural elucidation of hydroxy fatty acids by photodissociation mass spectrometry with photolabile derivatives. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8741. [PMID: 32012356 DOI: 10.1002/rcm.8741] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/29/2020] [Accepted: 01/31/2020] [Indexed: 06/10/2023]
Abstract
RATIONALE Eicosanoids are short-lived bio-responsive lipids produced locally from oxidation of polyunsaturated fatty acids (FAs) via a cascade of enzymatic or free radical reactions. Alterations in the composition and concentration of eicosanoids are indicative of inflammation responses and there is strong interest in developing analytical methods for the sensitive and selective detection of these lipids in biological mixtures. Most eicosanoids are hydroxy FAs (HFAs), which present a particular analytical challenge due to the presence of regioisomers arising from differing locations of hydroxylation and unsaturation within their structures. METHODS In this study, the recently developed derivatization reagent 1-(3-(aminomethyl)-4-iodophenyl)pyridin-1-ium (4-I-AMPP+ ) was applied to a representative set of HFAs including bioactive eicosanoids. Photodissociation (PD) mass spectra obtained at 266 nm of 4-I-AMPP+ -modified HFAs exhibit abundant product ions arising from photolysis of the aryl-iodide bond within the derivative with subsequent migration of the radical to the hydroxyl group promoting fragmentation of the FA chain and facilitating structural assignment. RESULTS Representative polyunsaturated HFAs (from the hydroxyeicosatetraenoic acid and hydroxyeicosapentaenoic acid families) were derivatized with 4-I-AMPP+ and subjected to a reversed-phase liquid chromatography workflow that afforded chromatographic resolution of isomers in conjunction with structurally diagnostic PD mass spectra. CONCLUSIONS PD of these complex HFAs was found to be sensitive to the locations of hydroxyl groups and carbon-carbon double bonds, which are structural properties strongly associated with the biosynthetic origins of these lipid mediators.
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Affiliation(s)
- Venkateswara R Narreddula
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD, 4000, Australia
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Pawel Sadowski
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Nathan R B Boase
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - David L Marshall
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Berwyck L J Poad
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Adam J Trevitt
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Todd W Mitchell
- School of Medicine, University of Wollongong, Wollongong, NSW, 2522, Australia
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia
| | - Stephen J Blanksby
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD, 4000, Australia
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, QLD, 4000, Australia
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15
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Further insight into the dual COX-2 and 15-LOX anti-inflammatory activity of 1,3,4-thiadiazole-thiazolidinone hybrids: The contribution of the substituents at 5th positions is size dependent. Bioorg Chem 2020; 97:103657. [DOI: 10.1016/j.bioorg.2020.103657] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/28/2020] [Accepted: 02/09/2020] [Indexed: 12/16/2022]
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Abstract
Lipoxygenases are key enzymes that catalyze the polyunsaturated fatty acids such as arachidic acid, linoleic acid (LA), and others unsaturated fatty acids. They are involved in important functions such as cell structure, metabolism, and signal transduction mechanisms, finally mediating cell death process, especially ferroptosis, a novel type of cell death modality. Our present protocol described a colorimetric assay for measuring lipoxygenase activity as well as a high-performance liquid chromatography/electrospray ionization tandem mass spectrometry method for the quantification of arachidonic acid metabolites.
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Affiliation(s)
- Xiao-Yuan Mao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, People's Republic of China. .,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, People's Republic of China. .,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, People's Republic of China. .,National Clinical Research Center for Geriatric Disorders, Changsha, Hunan, People's Republic of China.
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17
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Stolterfoht H, Rinnofner C, Winkler M, Pichler H. Recombinant Lipoxygenases and Hydroperoxide Lyases for the Synthesis of Green Leaf Volatiles. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:13367-13392. [PMID: 31591878 DOI: 10.1021/acs.jafc.9b02690] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Green leaf volatiles (GLVs) are mainly C6- and in rare cases also C9-aldehydes, -alcohols, and -esters, which are released by plants in response to biotic or abiotic stresses. These compounds are named for their characteristic smell reminiscent of freshly mowed grass. This review focuses on GLVs and the two major pathway enzymes responsible for their formation: lipoxygenases (LOXs) and fatty acid hydroperoxide lyases (HPLs). LOXs catalyze the peroxidation of unsaturated fatty acids, such as linoleic and α-linolenic acids. Hydroperoxy fatty acids are further converted by HPLs into aldehydes and oxo-acids. In many industrial applications, plant extracts have been used as LOX and HPL sources. However, these processes are limited by low enzyme concentration, stability, and specificity. Alternatively, recombinant enzymes can be used as biocatalysts for GLV synthesis. The increasing number of well-characterized enzymes efficiently expressed by microbial hosts will foster the development of innovative biocatalytic processes for GLV production.
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Affiliation(s)
- Holly Stolterfoht
- Austrian Centre of Industrial Biotechnology , Petersgasse 14 , 8010 Graz , Austria
| | - Claudia Rinnofner
- Austrian Centre of Industrial Biotechnology , Petersgasse 14 , 8010 Graz , Austria
- bisy e.U. , Wetzawinkel 20 , 8200 Hofstaetten , Austria
| | - Margit Winkler
- Austrian Centre of Industrial Biotechnology , Petersgasse 14 , 8010 Graz , Austria
- Institute of Molecular Biotechnology , TU Graz, NAWI Graz, BioTechMed Graz , Petersgasse 14 , 8010 Graz , Austria
| | - Harald Pichler
- Austrian Centre of Industrial Biotechnology , Petersgasse 14 , 8010 Graz , Austria
- Institute of Molecular Biotechnology , TU Graz, NAWI Graz, BioTechMed Graz , Petersgasse 14 , 8010 Graz , Austria
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18
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Li Y, Chen Q, Ran D, Wang H, Du W, Luo Y, Jiang W, Yang Y, Yang J. Changes in the levels of 12/15-lipoxygenase, apoptosis-related proteins and inflammatory factors in the cortex of diabetic rats and the neuroprotection of baicalein. Free Radic Biol Med 2019; 134:239-247. [PMID: 30659940 DOI: 10.1016/j.freeradbiomed.2019.01.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 01/12/2019] [Accepted: 01/15/2019] [Indexed: 02/07/2023]
Abstract
This study was designed to investigate the neuroprotective effects of baicalein and the effect of the cortical 12/15-lipoxygenase (12/15-LOX) pathway on diabetic cognitive dysfunction. Our results showed that spatial learning and memory ability, as well as cortex neurons, were significantly impaired after the onset of diabetes. The fasting blood glucose and random blood glucose levels in the model group were significantly higher than those in the normal group. The levels of TG and TC in the plasma of the model group were significantly increased, but there was no significant difference in the LDL level. The insulin content in the plasma of diabetic rats was significantly lower than that of the normal group. The levels of inflammatory factors and 12(S)-HETE were significantly increased in diabetic rats, as were the protein expression levels of cPLA2, 12/15-LOX, p38MAPK, phospho-p38MAPK, caspase-3, caspase-9 and Aβ1-42; by contrast, protein expression of Bcl-2 was significantly decreased. Administration of baicalein was shown to improve the spatial learning and memory ability and significantly decrease the levels of inflammatory cytokines. However, baicalein did not significantly influence the levels of blood glucose, lipids or insulin in rats. Baicalein treatment significantly protected diabetes rats from neuron death; significantly attenuated the overexpression of cPLA2, 12/15-LOX, p38MAPK, phospho-p38MAPK, caspase-3, caspase-9 and Aβ1-42; and upregulated the expression of Bcl-2. These findings suggest that baicalein improves the cognitive function of diabetic rats by directly acting in the brain rather than by regulating the levels of blood glucose, lipids or insulin. In addition, baicalein can protect rat cortical neurons from damage caused by diabetes via inhibiting the 12/15-LOX pathway and relieving inflammation and apoptosis of the central nervous system.
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Affiliation(s)
- Yuke Li
- Department of Pharmacology, Chongqing Medical University, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Qi Chen
- Department of Pharmacology, Chongqing Medical University, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China; Pharmacy Department of GuiZhou Provincial People's Hospital, Guiyang 550000, China
| | - Dongzhi Ran
- Department of Pharmacology, Chongqing Medical University, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Hong Wang
- Department of Pharmacology, Chongqing Medical University, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Weimin Du
- Department of Pharmacology, Chongqing Medical University, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Ying Luo
- Department of Pharmacology, Chongqing Medical University, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Wengao Jiang
- Department of Pharmacology, Chongqing Medical University, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Yang Yang
- Department of Pharmacology, Chongqing Medical University, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China
| | - Junqing Yang
- Department of Pharmacology, Chongqing Medical University, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing 400016, China.
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19
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New antibacterial and 5-lipoxygenase activities of synthetic benzyl phenyl ketones: Biological and docking studies. Bioorg Chem 2018; 82:385-392. [PMID: 30428417 DOI: 10.1016/j.bioorg.2018.10.050] [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: 08/03/2018] [Revised: 10/15/2018] [Accepted: 10/23/2018] [Indexed: 12/16/2022]
Abstract
We investigated twelve benzyl phenyl ketone derivatives which are synthetic precursors of isoflavonoids that are shown be good 5-hLOX inhibitors, especially those that have the catechol group, but these precursors never have been assayed as 5-hLOX inhibitors being a novelty as inhibitors of the enzyme, due to sharing important structural characteristics. Screening assays, half maximal inhibitory concentration (IC50) and kinetic assays of all the studied molecules (5 µg/ml in media assay) showed that 1-(2,4-dihydroxy-3-methylphenyl)-2-(3-chlorophenyl)-ethanone (K205; IC50 = 3.5 µM; Ki = 4.8 µM) and 1-(2,4-dihydroxy-3-methylphenyl)-2-(2-nitrophenyl)-ethanone (K206; IC50 = 2.3 µM; Ki = 0.7 µM) were potent, selective, competitive and nonredox inhibitors of 5-hLOX. Antioxidant behavior was also assayed by DPPH, FRAP, and assessing ROS production, and those with antibacterial and antiproliferative properties relating to 1-(2,4-dihydroxy-3-methylphenyl)-2-(2-chlorophenyl)-ethanone (K208) established it as the most interesting and relevant compound studied, as it showed nearly 100% inhibition of bacterial growth of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). Finally, docking studies were done that helped to characterize how the inhibitor structures correlated to decreased 5-hLOX activity.
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20
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Sugio A, Østergaard LH, Matsui K, Takagi S. Characterization of two fungal lipoxygenases expressed in Aspergillus oryzae. J Biosci Bioeng 2018; 126:436-444. [PMID: 29805113 DOI: 10.1016/j.jbiosc.2018.04.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 03/20/2018] [Accepted: 04/06/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Akiko Sugio
- Novozymes Japan Ltd., CB-6 MTG, 1-3 Nakase, Mihama-ku, Chiba 261-8501, Japan
| | | | - Kenji Matsui
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Shinobu Takagi
- Novozymes Japan Ltd., CB-6 MTG, 1-3 Nakase, Mihama-ku, Chiba 261-8501, Japan.
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21
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Abstract
In Strongylocentrotus purpuratus, the fucose sulphate polymer (FSP) of egg jelly induces the sperm acrosome reaction (AR; Vacquier & Moy, 1997). Protease treatment of sperm renders the cells insensitive to FSP, indicating that sperm membrane receptors mediate the signal transduction events underlying the AR. Monoclonal antibodies to a 210 kDa membrane glycoprotein induce Ca2+ influx into sperm and trigger the AR (Trimmer et al., 1986; Moy et al., 1996). Purified 210 kDa protein binds species-specifically to egg jelly and blocks AR induction by antibody (Podell & Vacquier, 1985; Moy et al., 1996). FSP binds to the 210 kDa protein attached to Sepharose (Vacquier & Moy, 1997). Monoclonal antibodies localise the 210 kDa protein on the plasma membrane over the acrosome and also on the sperm flagellum. The 210 kDa protein has the attributes of a sperm receptor for egg jelly and is henceforth named suREJ1 (Moy et al., 1996). We describe here the three REJ proteins found thus far in S. purpuratus sperm.
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22
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Orafaie A, Matin MM, Sadeghian H. The importance of 15-lipoxygenase inhibitors in cancer treatment. Cancer Metastasis Rev 2018; 37:397-408. [DOI: 10.1007/s10555-018-9738-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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23
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12/15 lipoxygenase: A crucial enzyme in diverse types of cell death. Neurochem Int 2018; 118:34-41. [PMID: 29627380 DOI: 10.1016/j.neuint.2018.04.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 03/06/2018] [Accepted: 04/04/2018] [Indexed: 12/31/2022]
Abstract
The 12/15-lipoxygenase (12/15-LOX) enzymes react with polyunsaturated fatty acids producing active lipid metabolites that are involved in plethora of human diseases including neurological disorders. A great many of elegant studies over the last decades have contributed to unraveling the mechanism how 12/15-lipoxygenase play a role in these diseases. And the way it works is mainly through apoptosis. However, recent years have found that the way 12/15-lipoxygenase works is also related to autophagy and ferroptosis, a newly defined type of cell death by Stockwell's lab in 2012. Figuring out how 12/15-lipoxygenase participate in these modes of cell death is of vital importance to understand its role in disease. The review aims to give a sight on our current knowledge on the role of this enzyme in apoptosis, autophagy and ferroptosis. And the relevant diseases that 12/15-lipoxygenase may be involved.
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24
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Habashy WS, Milfort MC, Rekaya R, Aggrey SE. Expression of genes that encode cellular oxidant/antioxidant systems are affected by heat stress. Mol Biol Rep 2018; 45:389-394. [PMID: 29619655 DOI: 10.1007/s11033-018-4173-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 03/24/2018] [Indexed: 01/31/2023]
Abstract
Heat stress causes critical molecular dysfunction that affects productivity in chickens. Thus, the purpose of this study was to evaluate the effect of heat stress (HS) on the expression of select genes in the oxidation/antioxidation machinery in the liver of chickens. Chickens at 14 days of age were randomly assigned to two treatment groups and kept under either a constant normal temperature (25 °C) or high temperature (35 °C) in individual cages for 12 days. mRNA expression of Nrf2, oxidants NADPH(NOX): [NOX1, NOX2, NOX3, NOX4, NOX5 and DUOX2], and antioxidants [SOD1, CAT, GR, GPx1, NQO1] in the liver were analyzed at 1 and 12 days post-HS. We show that, HS changes the mRNA expression of oxidants thereby increasing cellular reactive oxygen species (ROS). Additionally, persistent HS up-regulates SOD which converts superoxides to hydrogen peroxide. We further demonstrated the dynamic relationship between catalase, GSH peroxidase (GPx) and NADPH under both acute and chronic heat stress. The pentose phosphate pathway could be important under HS since it generates NADPH which serves as a cofactor for GPx. Also, methionine, a precursor of cysteine has been shown to have reducing properties and thereby makes for an alternative fuel for redox processes. Genes in the ROS and antioxidant generation pathways may provide insight into nutritional intervention strategies, especially the use of methionine and/or cysteine when birds are suffering from heat stress.
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Affiliation(s)
- Walid S Habashy
- NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA, 30602, USA.,Department of Animal and Poultry Production, Damanhour University, Damanhour, Al-Behira, Egypt
| | - Marie C Milfort
- NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA, 30602, USA
| | - Romdhane Rekaya
- Department of Animal and Dairy Sciences, University of Georgia, Athens, GA, 30602, USA
| | - Samuel E Aggrey
- NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA, 30602, USA.
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25
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Gilbert NC, Neau DB, Newcomer ME. Expression of an 8R-Lipoxygenase From the Coral Plexaura homomalla. Methods Enzymol 2018; 605:33-49. [PMID: 29909831 DOI: 10.1016/bs.mie.2018.02.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Methods are presented for the use of the coral 8R-lipoxygenase from the Caribbean sea whip coral Plexaura homomalla as a model enzyme for structural studies of animal lipoxygenases. The 8R-lipoxygenase is remarkably stable and can be stored at 4°C for 3 months with virtually no loss of activity. In addition, an engineered "pseudo wild-type" enzyme is soluble in the absence of detergents, which helps facilitate the preparation of enzyme:substrate complexes.
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Affiliation(s)
| | - David B Neau
- Cornell University, Northeastern Collaborative Access Team, Argonne National Laboratory, Argonne, IL, United States
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26
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Hu C, Ma S. Recent development of lipoxygenase inhibitors as anti-inflammatory agents. MEDCHEMCOMM 2018; 9:212-225. [PMID: 30108915 PMCID: PMC6083793 DOI: 10.1039/c7md00390k] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 11/28/2017] [Indexed: 01/05/2023]
Abstract
Inflammation is favorable in most cases, because it is a kind of body defensive response to external stimuli; sometimes, inflammation is also harmful, such as attacks on the body's own tissues. It could be that inflammation is a unified process of injury and resistance to injury. Inflammation brings extreme pain to patients, showing symptoms of rubor, swelling, fever, pain and dysfunction. As the specific mechanism is not clear yet, the current anti-inflammatory agents are given priority for relieving suffering of patients. Thus it is emergent to find new anti-inflammatory agents with rapid effect. Lipoxygenase (LOX) is a kind of rate-limiting enzyme in the process of arachidonic acid metabolism into leukotriene (LT) which mediates the occurrence of inflammation. The inhibition of LOX can reduce LT, thereby producing an anti-inflammatory effect. In this review, the LOX inhibitors reported in recent years are summarized, and, in particular, their activities, structure-activity relationships and molecular docking studies are emphasized, which will provide new ideas to design novel LOX inhibitors.
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Affiliation(s)
- Chaoyu Hu
- Department of Medicinal Chemistry , Key Laboratory of Chemical Biology (Ministry of Education) , School of Pharmaceutical Sciences , Shandong University , 44, West Culture Road , Jinan 250012 , P.R. China .
| | - Shutao Ma
- Department of Medicinal Chemistry , Key Laboratory of Chemical Biology (Ministry of Education) , School of Pharmaceutical Sciences , Shandong University , 44, West Culture Road , Jinan 250012 , P.R. China .
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27
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Asadipour A, Noushini S, Moghimi S, Mahdavi M, Nadri H, Moradi A, Shabani S, Firoozpour L, Foroumadi A. Synthesis and biological evaluation of chalcone-triazole hybrid derivatives as 15-LOX inhibitors. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2018. [DOI: 10.1515/znb-2017-0115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Abstract
An efficient aldol condensation/click reaction sequence is employed for the synthesis of chalcone-triazole-based derivatives in moderate to good yields. The ability of target compounds to inhibit 15-lipoxygenase enzyme was investigated and moderate to low inhibitory activities were observed for the synthesized compounds.
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Affiliation(s)
- Ali Asadipour
- Department of Medicinal Chemistry, Faculty of Pharmacy and Neuroscience Research Center, Institute of Neuropharmacology , Kerman University of Medical Sciences , Kerman , I.R. Iran
| | - Saeedeh Noushini
- Drug Design and Development Research Center , Tehran University of Medical Sciences , Tehran , I.R. Iran
| | - Setareh Moghimi
- Drug Design and Development Research Center , Tehran University of Medical Sciences , Tehran , I.R. Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute , Tehran University of Medical Sciences , Tehran , I.R. Iran
| | - Hamid Nadri
- Department of Medicinal Chemistry, Faculty of Pharmacy , Shahid Sadoughi University of Medical Sciences , Yazd , I.R. Iran
| | - Alireza Moradi
- Department of Medicinal Chemistry, Faculty of Pharmacy , Shahid Sadoughi University of Medical Sciences , Yazd , I.R. Iran
| | - Shabnam Shabani
- Drug Design and Development Research Center , Tehran University of Medical Sciences , Tehran , I.R. Iran
| | - Loghman Firoozpour
- Drug Design and Development Research Center , Tehran University of Medical Sciences , Tehran , I.R. Iran
| | - Alireza Foroumadi
- Department of Medicinal Chemistry, Faculty of Pharmacy and Neuroscience Research Center, Institute of Neuropharmacology , Kerman University of Medical Sciences , Kerman , I.R. Iran
- Department of Medicinal Chemistry , Faculty of Pharmacy, Tehran University of Medical Sciences , Tehran , I.R. Iran
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Kallitsakis MG, Carotti A, Catto M, Peperidou A, Hadjipavlou-Litina DJ, Litinas KE. Synthesis and Biological Evaluation of Novel Hybrid Molecules Containing Purine, Coumarin and Isoxazoline or Isoxazole Moieties. THE OPEN MEDICINAL CHEMISTRY JOURNAL 2017; 11:196-211. [PMID: 29387274 PMCID: PMC5748833 DOI: 10.2174/1874104501711010196] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 10/27/2017] [Accepted: 10/30/2017] [Indexed: 12/01/2022]
Abstract
Introduction: The 1,3-dipolar cycloaddition reactions of nitrile oxides formed in situ (in the presence of NCS and Et3N) from the oximes of (purin-9-yl)acetaldehyde or (coumarinyloxy)acetaldehyde with allyloxycoumarins or 9-allylpurines, respectively resulted in 3,5-disubstituted isoxazolines. The similar reactions of propargyloxycoumarins or 9-propargylpurines led to 3,5-disubstituted isoxazoles by treatment with PIDA and catalytic amount of TFA. Methods: The new compounds were tested in vitro as antioxidant agents and inhibitors of soybean lipoxygenase LO, AChE and MAO-B. Results: The majority of the compounds showed significant hydroxyl radical scavenging activity. Compounds 4k and 4n presented LO inhibitory activity. Conclusion: Compound 13e presents an antioxidant significant profile combining anti-LO, anti-AChE and anti-MAO-B activities.
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Affiliation(s)
- Michael G Kallitsakis
- Laboratory of Organic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Angelo Carotti
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "Aldo Moro", V. Orabona 4, I-70125 Bari, Italy
| | - Marco Catto
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "Aldo Moro", V. Orabona 4, I-70125 Bari, Italy
| | - Aikaterini Peperidou
- Department of Pharmaceutical Chemistry, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Dimitra J Hadjipavlou-Litina
- Department of Pharmaceutical Chemistry, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Konstantinos E Litinas
- Laboratory of Organic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
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Kaur N, Singh J, Reddy S. Interaction between ALOX15 polymorphisms and coronary artery disease in North Indian population. Clin Exp Hypertens 2017; 40:398-405. [DOI: 10.1080/10641963.2017.1384485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Naindeep Kaur
- Department of Biotechnology, Panjab University, Chandigarh, India
| | - Jagtar Singh
- Department of Biotechnology, Panjab University, Chandigarh, India
| | - Sreenivas Reddy
- Department of Cardiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Papuc C, Goran GV, Predescu CN, Nicorescu V, Stefan G. Plant Polyphenols as Antioxidant and Antibacterial Agents for Shelf-Life Extension of Meat and Meat Products: Classification, Structures, Sources, and Action Mechanisms. Compr Rev Food Sci Food Saf 2017; 16:1243-1268. [PMID: 33371586 DOI: 10.1111/1541-4337.12298] [Citation(s) in RCA: 269] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/04/2017] [Accepted: 08/04/2017] [Indexed: 12/27/2022]
Abstract
Oxidative processes and meat spoilage bacteria are major contributors to decreasing the shelf-life of meat and meat products. Oxidative processes occur during processing, storage, and light exposure, lowering the nutritional and sensory value and acceptability of meat and generating toxic compounds for humans. Polyphenols inhibit oxidative processes in 3 ways: as reactive species scavengers, lipoxygenase inhibitors, and reducing agents for metmyoglobin. Thus, polyphenols are candidate antioxidants for meat and meat products. The cross-contamination of meat with spoilage and pathogenic microorganisms can occur in production lines and result in economic losses. The ability of polyphenols to interact with bacterial cell wall components and the bacterial cell membrane can prevent and control biofilm formation, as well as inhibit microbial enzymes, interfere in protein regulation, and deprive bacterial cell enzymes of substrates and metal ions. Thus, polyphenols are candidate antimicrobial agents for use with meat and meat products. Commercially available polyphenols can decrease primary and secondary lipid peroxidation levels, inhibit lipoxygenase activity, improve meat color stability, minimize the degradation of salt-soluble myofibrillar protein and sulfhydryl groups, and retard bacterial growth. Further studies are now needed to clarify the synergistic/antagonistic action of various polyphenols, and to identify the best polyphenol classes, concentrations, and conditions of use.
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Affiliation(s)
- Camelia Papuc
- UASVM of Bucharest, Faculty of Veterinary Medicine, 105 Splaiul Independentei, 5th district, 050097, Bucharest, Romania
| | - Gheorghe V Goran
- UASVM of Bucharest, Faculty of Veterinary Medicine, 105 Splaiul Independentei, 5th district, 050097, Bucharest, Romania
| | - Corina N Predescu
- UASVM of Bucharest, Faculty of Veterinary Medicine, 105 Splaiul Independentei, 5th district, 050097, Bucharest, Romania
| | - Valentin Nicorescu
- UASVM of Bucharest, Faculty of Veterinary Medicine, 105 Splaiul Independentei, 5th district, 050097, Bucharest, Romania
| | - Georgeta Stefan
- UASVM of Bucharest, Faculty of Veterinary Medicine, 105 Splaiul Independentei, 5th district, 050097, Bucharest, Romania
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Kain V, Halade GV. Metabolic and Biochemical Stressors in Diabetic Cardiomyopathy. Front Cardiovasc Med 2017; 4:31. [PMID: 28620607 PMCID: PMC5449449 DOI: 10.3389/fcvm.2017.00031] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 04/28/2017] [Indexed: 12/18/2022] Open
Abstract
Diabetic cardiomyopathy (DCM) or diabetes-induced cardiac dysfunction is a direct consequence of uncontrolled metabolic syndrome and is widespread in US population and worldwide. Despite of the heterogeneous and distinct features of DCM, the clinical relevance of DCM is now becoming established. DCM progresses to pathological cardiac remodeling with the higher risk of heart attack and subsequent heart failure in diabetic patients. In this review, we emphasize lipid substrate quality and the phenotypic, metabolic, and biochemical stressors of DCM in the rodent and human pathophysiology. We discuss lipoxygenase signaling in the inflammatory pathway with multiple contributing and confounding factors leading to DCM. Additionally, emerging biochemical pathways are emphasized to make progress toward therapeutic advancement to treat DCM.
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Affiliation(s)
- Vasundhara Kain
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Ganesh V Halade
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
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32
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Tayeb AH, Hubbe MA, Zhang Y, Rojas OJ. Effect of Lipoxygenase Oxidation on Surface Deposition of Unsaturated Fatty Acids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4559-4566. [PMID: 28410438 DOI: 10.1021/acs.langmuir.7b00908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We studied the interactions of lipid molecules (linoleic acid, glycerol trilinoleate and a complex mixture of wood extractives) with hydrophilic and hydrophobic surfaces (cellulose nanofibrils (CNFs) and polyethylene terephthalate (PET), respectively). The effect of lipoxygenase treatment to minimize the affinity of the lipids with the given surface was considered. Application of an electroacoustic sensing technique (QCM) allowed the monitoring of the kinetics of oxidation as well as dynamics of lipid deposition on CNF and PET. The effect of the lipoxygenase enzymes (LOX) was elucidated with regards to their ability to reduce the formation of soiling lipid layers. The results pointed to the fact that the rate of colloidal oxidation depended on the type of lipid substrate. The pretreatment of the lipids with LOX reduced substantially their affinity to the surfaces, especially PET. Surface plasmon resonance (SPR) sensograms confirmed the effect of oxidation in decreasing the extent of deposition on the hydrophilic CNF. QCM energy dissipation analyses revealed the possible presence of a loosely adsorbed lipid layer on the PET surface. The morphology of the deposits accumulated on the solids was determined by atomic force microscopy and indicated important changes upon lipid treatment with LOX. The results highlighted the benefit of enzyme as a biobased treatment to reduce hydrophobic interactions, thus providing a viable solution to the control of lipid deposition from aqueous media.
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Affiliation(s)
- Ali H Tayeb
- Department of Forest Biomaterials, North Carolina State University , Raleigh, North Carolina 27513, United States
| | - Martin A Hubbe
- Department of Forest Biomaterials, North Carolina State University , Raleigh, North Carolina 27513, United States
| | - Yanxia Zhang
- Institute for Cardiovascular Science of Soochow University , #708 Ren Ming Road, Suzhou, 215000, People's Republic of China
| | - Orlando J Rojas
- Department of Forest Biomaterials, North Carolina State University , Raleigh, North Carolina 27513, United States
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University , Espoo 00076, Finland
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33
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Tirapegui C, Acevedo-Fuentes W, Dahech P, Torrent C, Barrias P, Rojas-Poblete M, Mascayano C. Easy and rapid preparation of benzoylhydrazides and their diazene derivatives as inhibitors of 15-lipoxygenase. Bioorg Med Chem Lett 2017; 27:1649-1653. [PMID: 28318946 DOI: 10.1016/j.bmcl.2017.03.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 03/05/2017] [Accepted: 03/06/2017] [Indexed: 11/28/2022]
Abstract
Two series of diaza derivatives were prepared by solvent-free condensation of benzoic acid and 4-substituted phenylhydrazines in order to obtain phenylhydrazides (HYD series) and, by oxidation of these compounds, the corresponding benzoyldiazenes (DIA series). Both sets were evaluated as inhibitors of soybean 15-lipoxygenase activity and antioxidant capability in the FRAP and CUPRAC assays. The most potent inhibitors of both series exhibited IC50 values in the low micromolar range. Kinetic studies showed that at least the more active compounds were competitive inhibitors. Docking results indicated that the most potent inhibitor interacts strongly with Ile-839 and iron in the active site.
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Affiliation(s)
- Cristian Tirapegui
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile; Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, correo 33, Santiago, Chile.
| | - Williams Acevedo-Fuentes
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
| | - Pablo Dahech
- Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, correo 33, Santiago, Chile
| | - Claudia Torrent
- Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, correo 33, Santiago, Chile
| | - Pablo Barrias
- Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, correo 33, Santiago, Chile
| | - Macarena Rojas-Poblete
- Relativistic Molecular Physics (ReMoPh) Group, Ph.D. Program in Molecular, Physical Chemistry, Universidad Andrés Bello, Av. República 275, Santiago 8370146, Chile; Universidad Tecnológica de Chile INACAP, Chile
| | - Carolina Mascayano
- Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, correo 33, Santiago, Chile
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Savych I, Ejaz SA, Shah SJA, Iaroshenko VO, Villinger A, Sosnovskikh VY, Iqbal J, Abbasi A, Langer P. Reactions of 3-Acylchromones with Heterocyclic Ketene Aminals: One-Pot Synthesis and Phosphatase Inhibitory Activity of Fused Pyridine Derivatives. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601138] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Iryna Savych
- Institut für Chemie; Universität Rostock; Albert-Einstein-Str. 3a 18059 Rostock Germany
| | - Syeda Abida Ejaz
- Centre for Advanced Drug Research; COMSATS Institute of Information Technology; Abbottabad Pakistan
| | - Syed Jawad Ali Shah
- Centre for Advanced Drug Research; COMSATS Institute of Information Technology; Abbottabad Pakistan
| | - Viktor O. Iaroshenko
- Institut für Chemie; Universität Rostock; Albert-Einstein-Str. 3a 18059 Rostock Germany
- National Taras Shevchenko University; 62 Volodymyrska Str. 01033 Kyiv Ukraine
| | - Alexander Villinger
- Institut für Chemie; Universität Rostock; Albert-Einstein-Str. 3a 18059 Rostock Germany
| | | | - Jamshed Iqbal
- Centre for Advanced Drug Research; COMSATS Institute of Information Technology; Abbottabad Pakistan
| | - Afshin Abbasi
- Department of Chemistry; Faculty of Science; University of Qom; Qom Iran
| | - Peter Langer
- Institut für Chemie; Universität Rostock; Albert-Einstein-Str. 3a 18059 Rostock Germany
- Leibniz Institut für Katalyse; Albert-Einstein-Str. 18059 Rostock Germany
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35
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Effect of Exogenous Abscisic Acid and Methyl Jasmonate on Anthocyanin Composition, Fatty Acids, and Volatile Compounds of Cabernet Sauvignon (Vitis vinifera L.) Grape Berries. Molecules 2016; 21:molecules21101354. [PMID: 27754331 PMCID: PMC6273220 DOI: 10.3390/molecules21101354] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 10/04/2016] [Accepted: 10/08/2016] [Indexed: 11/24/2022] Open
Abstract
The anthocyanin composition, fatty acids, and volatile aromas are important for Cabernet Sauvignon grape quality. This study evaluated the effect of exogenous abscisic acid (ABA) and methyl jasmonate (MeJA) on the anthocyanin composition, fatty acids, lipoxygenase activity, and the volatile compounds of Cabernet Sauvignon grape berries. Exogenous ABA and MeJA improved the content of total anthocyanins (TAC) and individual anthocyanins. Lipoxygenase (LOX) activity also increased after treatment. Furthermore, 16 fatty acids were detected. The linoleic acid concentration gradually increased with ABA concentration. The fatty acid content decreased with increasing MeJA concentration and then increased again, with the exception of linoleic acid. After exogenous ABA and MeJA treatment, the C6 aroma content increased significantly. Interestingly, the exogenous ABA and MeJA treatments improved mainly the content of 1-hexanol, hexanal, and 2-heptanol. These results provide insight into the effect of plant hormones on wine grapes, which is useful for grape quality improvement.
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36
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Lang L, Dong N, Wu D, Yao X, Lu W, Zhang C, Ouyang P, Zhu J, Tang Y, Wang W, Li J, Huang J. 2-Arylbenzo[b]furan derivatives as potent human lipoxygenase inhibitors. J Enzyme Inhib Med Chem 2016; 31:98-105. [DOI: 10.1080/14756366.2016.1220376] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Li Lang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China,
| | - Ningning Dong
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China,
| | - Deyan Wu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China,
| | - Xue Yao
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China,
| | - Weiqiang Lu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China, and
| | - Chen Zhang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China,
| | - Ping Ouyang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China,
| | - Jin Zhu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China,
| | - Yun Tang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China,
| | - Wei Wang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China,
- Department of Chemistry & Chemical Biology, University of New Mexico, Albuquerque, NM, USA
| | - Jian Li
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China,
| | - Jin Huang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China,
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Integrated application of transcriptomics and metabolomics yields insights into population-asynchronous ovary development in Coilia nasus. Sci Rep 2016; 6:31835. [PMID: 27545088 PMCID: PMC4992829 DOI: 10.1038/srep31835] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 07/27/2016] [Indexed: 11/11/2022] Open
Abstract
Populations of Coilia nasus demonstrate asynchronous ovarian development, which severely restricts artificial breeding and large-scale cultivation. In this study, we used a combination of transcriptomic and metabolomic methods to identify the key signaling pathways and genes regulation affecting ovarian development. We identified 565 compounds and generated 47,049 unigenes from ovary tissue. Fifteen metabolites and 830 genes were significantly up-regulated, while 27 metabolites and 642 genes were significantly down-regulated from stage III to stage IV of ovary development. Meanwhile, 31 metabolites and 1,932 genes were significantly up-regulated, and four metabolites and 764 genes were down-regulated from stage IV to stage V. These differentially expressed genes and metabolites were enriched by MetScape. Forty-three and 50 signaling pathways had important functions from stage III–IV and from stage IV–V in the ovary, respectively. Among the above signaling pathways, 39 played important roles from ovarian stage III–V, including “squalene and cholesterol biosynthesis”, “steroid hormone biosynthesis”, and “arachidonate metabolism and prostaglandin formation” pathways which may thus have key roles in regulating asynchronous development. These results shed new light on our understanding of the mechanisms responsible for population-asynchronous development in fish.
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38
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Ackermann JA, Hofheinz K, Zaiss MM, Krönke G. The double-edged role of 12/15-lipoxygenase during inflammation and immunity. Biochim Biophys Acta Mol Cell Biol Lipids 2016; 1862:371-381. [PMID: 27480217 DOI: 10.1016/j.bbalip.2016.07.014] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 07/01/2016] [Accepted: 07/28/2016] [Indexed: 01/18/2023]
Abstract
12/15-Lipoxygenase (12/15-LOX) mediates the enzymatic oxidation of polyunsaturated fatty acids, thereby contributing to the generation of various bioactive lipid mediators. Although 12/15-LOX has been implicated in the pathogenesis of multiple chronic inflammatory diseases, its physiologic functions seem to include potent immune modulatory properties that physiologically contribute to the resolution of inflammation and the clearance of inflammation-associated tissue damage. This review aims to give a comprehensive overview about our current knowledge on the role of this enzyme during the regulation of inflammation and immunity. This article is part of a Special Issue entitled: Lipid modification and lipid peroxidation products in innate immunity and inflammation edited by Christoph J. Binder.
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Affiliation(s)
- Jochen A Ackermann
- Department of Internal Medicine 3 and Institute for Clinical Immunology, University Hospital Erlangen, Erlangen, Germany; Nikolaus Fiebiger Center of Molecular Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Katharina Hofheinz
- Department of Internal Medicine 3 and Institute for Clinical Immunology, University Hospital Erlangen, Erlangen, Germany; Nikolaus Fiebiger Center of Molecular Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Mario M Zaiss
- Department of Internal Medicine 3 and Institute for Clinical Immunology, University Hospital Erlangen, Erlangen, Germany
| | - Gerhard Krönke
- Department of Internal Medicine 3 and Institute for Clinical Immunology, University Hospital Erlangen, Erlangen, Germany; Nikolaus Fiebiger Center of Molecular Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany.
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39
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Dianat S, Moghimi S, Mahdavi M, Nadri H, Moradi A, Firoozpour L, Emami S, Mouradzadegun A, Shafiee A, Foroumadi A. Quinoline-based imidazole-fused heterocycles as new inhibitors of 15-lipoxygenase. J Enzyme Inhib Med Chem 2016; 31:205-209. [PMID: 27424740 DOI: 10.1080/14756366.2016.1206087] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 06/10/2016] [Accepted: 06/21/2016] [Indexed: 10/21/2022] Open
Abstract
A series of 2-chloro-quinoline-based imidazopyridines 6a-l and imidazothiazoles 6m-o bearing a bulky alkylamine side chain were synthesized as soybean 15-LOX inhibitors. The target compounds 6a-o were prepared via one-pot reaction of 2-chloroquinoline-3-carbaldehyde (3), heteroaromatic amidine 4, and alkyl isocyanides 5, in the presence of NH4Cl. All compounds showed significant anti-15-LOX activity (IC50 values ≤40 μM). Among the title compounds, the imidazo[2,1-b]thiazole derivative 6n bearing a tert-butylamine moiety showed the highest activity against soybean 15-LOX enzyme.
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Affiliation(s)
- Shima Dianat
- a Department of Chemistry , Faculty of Science, Shahid Chamran University , Ahvaz , Iran
| | - Setareh Moghimi
- b Department of Medicinal Chemistry , Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Mohammad Mahdavi
- c Drug Design and Development Research Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Hamid Nadri
- d Department of Medicinal Chemistry , Faculty of Pharmacy, Shahid Sadoughi University of Medical Sciences , Yazd , Iran , and
| | - Alireza Moradi
- d Department of Medicinal Chemistry , Faculty of Pharmacy, Shahid Sadoughi University of Medical Sciences , Yazd , Iran , and
| | - Loghman Firoozpour
- c Drug Design and Development Research Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Saeed Emami
- e Department of Medicinal Chemistry and Pharmaceutical Sciences Research Center , Faculty of Pharmacy, Mazandaran University of Medical Sciences , Sari , Iran
| | - Arash Mouradzadegun
- a Department of Chemistry , Faculty of Science, Shahid Chamran University , Ahvaz , Iran
| | - Abbas Shafiee
- b Department of Medicinal Chemistry , Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Alireza Foroumadi
- b Department of Medicinal Chemistry , Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences , Tehran , Iran
- c Drug Design and Development Research Center, Tehran University of Medical Sciences , Tehran , Iran
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40
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Evolutionary alteration of ALOX15 specificity optimizes the biosynthesis of antiinflammatory and proresolving lipoxins. Proc Natl Acad Sci U S A 2016; 113:E4266-75. [PMID: 27412860 DOI: 10.1073/pnas.1604029113] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
ALOX15 (12/15-lipoxygenase) orthologs have been implicated in maturational degradation of intracellular organelles and in the biosynthesis of antiinflammatory and proresolving eicosanoids. Here we hypothesized that lower mammals (mice, rats, pigs) express 12-lipoxygenating ALOX15 orthologs. In contrast, 15-lipoxygenating isoforms are found in higher primates (orangutans, men), and these results suggest an evolution of ALOX15 specificity. To test this hypothesis we first cloned and characterized ALOX15 orthologs of selected Catarrhini representing different stages of late primate evolution and found that higher primates (men, chimpanzees) express 15-lipoxygenating orthologs. In contrast, lower primates (baboons, rhesus monkeys) express 12-lipoxygenating enzymes. Gibbons, which are flanked in evolution by rhesus monkeys (12-lipoxygenating ALOX15) and orangutans (15-lipoxygenating ALOX15), express an ALOX15 ortholog with pronounced dual specificity. To explore the driving force for this evolutionary alterations, we quantified the lipoxin synthase activity of 12-lipoxygenating (rhesus monkey, mouse, rat, pig, humIle418Ala) and 15-lipoxygenating (man, chimpanzee, orangutan, rabbit, ratLeu353Phe) ALOX15 variants and found that, when normalized to their arachidonic acid oxygenase activities, the lipoxin synthase activities of 15-lipoxygenating ALOX15 variants were more than fivefold higher (P < 0.01) [corrected]. Comparative molecular dynamics simulations and quantum mechanics/molecular mechanics calculations indicated that, for the 15-lipoxygenating rabbit ALOX15, the energy barrier for C13-hydrogen abstraction (15-lipoxygenation) was 17 kJ/mol lower than for arachidonic acid 12-lipoxygenation. In contrast, for the 12-lipoxygenating Ile418Ala mutant, the energy barrier for 15-lipoxygenation was 10 kJ/mol higher than for 12-lipoxygenation. Taken together, our data suggest an evolution of ALOX15 specificity, which is aimed at optimizing the biosynthetic capacity for antiinflammatory and proresolving lipoxins.
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41
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Aanangi R, Kotapati KV, Palaka BK, Kedam T, Kanika ND, Ampasala DR. Purification and characterization of lipoxygenase from mung bean (Vigna radiata L.) germinating seedlings. 3 Biotech 2016; 6:113. [PMID: 28330183 PMCID: PMC5398193 DOI: 10.1007/s13205-016-0427-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 04/26/2016] [Indexed: 12/02/2022] Open
Abstract
This study reports purification and characterization of lipoxygenase protein from mung bean germinating seedlings. Lipoxygenases (LOXs) are key enzymes in seed germination. The purified mung bean LOX has resolved into two peaks by chromatofocusing, one has highest LOX activity with an isoelectric point of 5.84 and the other has lowest LOX activity with an isoelectric point of 5.52. The purified LOX has molecular mass of approximately 97 kDa and showed high activity with linoleic acid than linolenic acid and arachidonic acid. The optimal activity of LOX was observed at pH 6.5 and temperature 35 °C. Far-UV circular dichroism (CD) studies revealed that the purified mung bean LOX possess secondary structural elements with significant α-helix and β-strands. Further, the secondary structure of mung bean LOX was stable up to 60 °C at pH 6.5. Biophysical and chemical properties of the mung bean LOX are similar to the other legume LOXs and may be considered as type-1 LOX.
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Affiliation(s)
- Raveendra Aanangi
- Department of Biochemistry, Sri Venkateswara University, Tirupati, 517 502, Andhra Pradesh, India
| | - Kasi Viswanath Kotapati
- Centre for Bioinformatics, School of Life sciences, Pondicherry University, Puducherry, 605014, India
| | - Bhagath Kumar Palaka
- Centre for Bioinformatics, School of Life sciences, Pondicherry University, Puducherry, 605014, India
| | - Thyagaraju Kedam
- Department of Biochemistry, Sri Venkateswara University, Tirupati, 517 502, Andhra Pradesh, India
| | - Nirmala Devi Kanika
- Department of Biochemistry, Sri Venkateswara University, Tirupati, 517 502, Andhra Pradesh, India
| | - Dinakara Rao Ampasala
- Centre for Bioinformatics, School of Life sciences, Pondicherry University, Puducherry, 605014, India.
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Data on expression of lipoxygenases-5 and -12 in the normal and acetaminophen-damaged liver. Data Brief 2016; 7:1199-203. [PMID: 27408922 PMCID: PMC4927949 DOI: 10.1016/j.dib.2016.03.079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 03/13/2016] [Accepted: 03/26/2016] [Indexed: 12/11/2022] Open
Abstract
Here we present additional data on the expression of lipoxygenases -5 and -12 in the normal and acetaminophen-damaged liver, which are associated with our manuscript recently published in Chemico-Biological Interactions on lipid metabolism and eicosanoid signaling pathways involved in acetaminophen-induced liver damage in a mouse model (http://dx.doi.org/10.1016/j.cbi.2015.10.019 [1]). It has been demonstrated that the expression of lipoxygenase-5 and leukotriene formation are increased in the livers of rats with carbon tetrachloride (CCl4)-induced cirrhosis (http://dx.doi.org/10.1053/gast.2000.17831 [2]). In addition, the lipoxygenase-12 is known to be expressed in the resident macrophage population of the liver (http://dx.doi.org/10.1016/S0014-5793(99)00396-8 [3]). Mice were injected with acetaminophen, and at 48 h their livers were processed for immunohistochemistry with anti-mouse lipoxygenase-5 and -12 antibodies. At the same time point, the RNA was also extracted from the liver to assess the expression of lipoxygenase-5 and -12 genes via qPCR analysis. Our results show that lipoxygenase-5 expression, but not that of lipoxygenase-12, changes significantly in the acetominophen-damaged liver.
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The Lipoxygenases: Their Regulation and Implication in Alzheimer's Disease. Neurochem Res 2015; 41:243-57. [PMID: 26677076 PMCID: PMC4773476 DOI: 10.1007/s11064-015-1776-x] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 11/06/2015] [Accepted: 11/14/2015] [Indexed: 02/03/2023]
Abstract
Inflammatory processes and alterations of lipid metabolism play a crucial role in Alzheimer’s disease (AD) and other neurodegenerative disorders. Polyunsaturated fatty acids (PUFA) metabolism impaired by cyclooxygenases (COX-1, COX-2), which are responsible for formation of several eicosanoids, and by lipoxygenases (LOXs) that catalyze the addition of oxygen to linolenic, arachidonic (AA), and docosahexaenoic acids (DHA) and other PUFA leading to formation of bioactive lipids, significantly affects the course of neurodegenerative diseases. Among several isoforms, 5-LOX and 12/15-LOX are especially important in neuroinflammation/neurodegeneration. These two LOXs are regulated by substrate concentration and availability, and by phosphorylation/dephosphorylation through protein kinases PKA, PKC and MAP-kinases, including ERK1/ERK2 and p38. The protein/protein interaction also is involved in the mechanism of 5-LOX regulation through FLAP protein and coactosin-like protein. Moreover, non-heme iron and calcium ions are potent regulators of LOXs. The enzyme activity significantly depends on the cell redox state and is differently regulated by various signaling pathways. 5-LOX and 12/15-LOX convert linolenic acid, AA, and DHA into several bioactive compounds e.g. hydroperoxyeicosatetraenoic acids (5-HPETE, 12S-HPETE, 15S-HPETE), which are reduced to corresponding HETE compounds. These enzymes synthesize several bioactive lipids, e.g. leucotrienes, lipoxins, hepoxilins and docosahexaenoids. 15-LOX is responsible for DHA metabolism into neuroprotectin D1 (NPD1) with significant antiapoptotic properties which is down-regulated in AD. In this review, the regulation and impact of 5-LOX and 12/15-LOX in the pathomechanism of AD is discussed. Moreover, we describe the role of several products of LOXs, which may have significant pro- or anti-inflammatory activity in AD, and the cytoprotective effects of LOX inhibitors.
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Lee YH, Kim SN, Kwon HJ, Maddipati KR, Granneman JG. Adipogenic role of alternatively activated macrophages in β-adrenergic remodeling of white adipose tissue. Am J Physiol Regul Integr Comp Physiol 2015; 310:R55-65. [PMID: 26538237 DOI: 10.1152/ajpregu.00355.2015] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 10/21/2015] [Indexed: 01/16/2023]
Abstract
De novo brown adipogenesis involves the proliferation and differentiation of progenitors, yet the mechanisms that guide these events in vivo are poorly understood. We previously demonstrated that treatment with a β3-adrenergic receptor (ADRB3) agonist triggers brown/beige adipogenesis in gonadal white adipose tissue following adipocyte death and clearance by tissue macrophages. The close physical relationship between adipocyte progenitors and tissue macrophages suggested that the macrophages that clear dying adipocytes might generate proadipogenic factors. Flow cytometric analysis of macrophages from mice treated with CL 316,243 identified a subpopulation that contained elevated lipid and expressed CD44. Lipidomic analysis of fluorescence-activated cell sorting-isolated macrophages demonstrated that CD44+ macrophages contained four- to five-fold higher levels of the endogenous peroxisome-proliferator activated receptor gamma (PPARγ) ligands 9-hydroxyoctadecadienoic acid (HODE), and 13-HODE compared with CD44- macrophages. Gene expression profiling and immunohistochemistry demonstrated that ADRB3 agonist treatment upregulated expression of ALOX15, the lipoxygenase responsible for generating 9-HODE and 13-HODE. Using an in vitro model of adipocyte efferocytosis, we found that IL-4-primed tissue macrophages accumulated lipid from dying fat cells and upregulated expression of Alox15. Furthermore, treatment of differentiating adipocytes with 9-HODE and 13-HODE potentiated brown/beige adipogenesis. Collectively, these data indicate that noninflammatory removal of adipocyte remnants and coordinated generation of PPARγ ligands by M2 macrophages provides localized adipogenic signals to support de novo brown/beige adipogenesis.
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Affiliation(s)
- Yun-Hee Lee
- College of Pharmacy, Yonsei University, Incheon, South Korea
| | - Sang-Nam Kim
- College of Pharmacy, Yonsei University, Incheon, South Korea
| | - Hyun-Jung Kwon
- College of Pharmacy, Yonsei University, Incheon, South Korea
| | - Krishna Rao Maddipati
- Lipidomics Core Facility and Department of Pathology, Wayne State University School of Medicine, Detroit, Michigan; and
| | - James G Granneman
- Center for Integrative Metabolic and Endocrine Research, Wayne State University School of Medicine, Detroit, Michigan
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Takahashi Y, Otsuki A, Mori Y, Kawakami Y, Ito H. Inhibition of leukocyte-type 12-lipoxygenase by guava tea leaves prevents development of atherosclerosis. Food Chem 2015; 186:2-5. [DOI: 10.1016/j.foodchem.2015.03.105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 03/23/2015] [Accepted: 03/25/2015] [Indexed: 12/11/2022]
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Mitra S, Bartlett SG, Newcomer ME. Identification of the Substrate Access Portal of 5-Lipoxygenase. Biochemistry 2015; 54:6333-42. [PMID: 26427761 DOI: 10.1021/acs.biochem.5b00930] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The overproduction of inflammatory lipid mediators derived from arachidonic acid contributes to asthma and cardiovascular diseases, among other pathologies. Consequently, the enzyme that initiates the synthesis of pro-inflammatory leukotrienes, 5-lipoxygenase (5-LOX), is a target for drug design. The crystal structure of 5-LOX revealed a fully encapsulated active site; thus the point of substrate entry is not known. We asked whether a structural motif, a "cork" present in 5-LOX but absent in other mammalian lipoxygenases, might be ejected to allow substrate access. Our results indicate that reduction of cork volume facilitates access to the active site. However, if cork entry into the site is obstructed, enzyme activity is significantly compromised. The results support a model in which the "cork" that shields the active site in the absence of substrate serves as the active site portal, but the "corking" amino acid Phe-177 plays a critical role in providing a fully functional active site. Thus, the more appropriate metaphor for this structural motif is a "twist-and-pour" cap. Additional mutagenesis data are consistent with a role for His-600, deep in the elongated cavity, in positioning the substrate for catalysis.
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Affiliation(s)
- Sunayana Mitra
- Department of Biological Sciences, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Sue G Bartlett
- Department of Biological Sciences, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Marcia E Newcomer
- Department of Biological Sciences, Louisiana State University , Baton Rouge, Louisiana 70803, United States
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Stein K, Stoffels M, Lysson M, Schneiker B, Dewald O, Krönke G, Kalff JC, Wehner S. A role for 12/15-lipoxygenase-derived proresolving mediators in postoperative ileus: protectin DX-regulated neutrophil extravasation. J Leukoc Biol 2015; 99:231-9. [PMID: 26292977 DOI: 10.1189/jlb.3hi0515-189r] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 07/12/2015] [Indexed: 12/11/2022] Open
Abstract
Resolution of inflammation is an active counter-regulatory mechanism involving polyunsaturated fatty acid-derived proresolving lipid mediators. Postoperative intestinal motility disturbances, clinically known as postoperative ileus, occur frequently after abdominal surgery and are mediated by a complex inflammation of the intestinal muscularis externa. Herein, we tested the hypothesis that proresolving lipid mediators are involved in the resolution of postoperative ileus. In a standardized experimental model of postoperative ileus, we detected strong expression of 12/15-lipoxygenase within the postoperative muscularis externa of C57BL/6 mice, predominately located within CX3CR1(+)/Ly6C(+) infiltrating monocytes rather than Ly6G(+) neutrophils. Mass spectrometry analyses demonstrated that a 12/15-lipoxygenase increase was accompanied by production of docosahexaenoic acid-derived lipid mediators, particularly protectin DX and resolvin D2, and their common precursor 17-hydroxy docosahexaenoic acid. Perioperative administration of protectin DX, but not resolvin D2 diminished blood-derived leukocyte infiltration into the surgically manipulated muscularis externa and improved the gastrointestinal motility. Flow cytometry analyses showed impaired Ly6G(+)/Ly6C(+) neutrophil extravasation after protectin DX treatment, whereas Ly6G(-)/Ly6C(+) monocyte numbers were not affected. 12/15-lipoxygenase-deficient mice, lacking endogenous protectin DX synthesis, demonstrated increased postoperative leukocyte levels. Preoperative intravenous administration of a docosahexaenoic acid-rich lipid emulsion reduced postoperative leukocyte infiltration in wild-type mice but failed in 12/15-lipoxygenase-deficient mice mice. Protectin DX application reduced leukocyte influx and rescued 12/15-lipoxygenase-deficient mice mice from postoperative ileus. In conclusion, our results show that 12/15-lipoxygenase mediates postoperative ileus resolution via production of proresolving docosahexaenoic acid-derived protectin DX. Perioperative, parenteral protectin DX or docosahexaenoic acid supplementation, as well as modulation of the 12/15-lipoxygenase pathway, may be instrumental in prevention of postoperative ileus.
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Affiliation(s)
- Kathy Stein
- Departments of *Surgery and Cardiac Surgery, University of Bonn, Bonn, Germany; and Department of Internal Medicine 3 and Institute for Clinical Immunology, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Melissa Stoffels
- Departments of *Surgery and Cardiac Surgery, University of Bonn, Bonn, Germany; and Department of Internal Medicine 3 and Institute for Clinical Immunology, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Mariola Lysson
- Departments of *Surgery and Cardiac Surgery, University of Bonn, Bonn, Germany; and Department of Internal Medicine 3 and Institute for Clinical Immunology, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Bianca Schneiker
- Departments of *Surgery and Cardiac Surgery, University of Bonn, Bonn, Germany; and Department of Internal Medicine 3 and Institute for Clinical Immunology, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Oliver Dewald
- Departments of *Surgery and Cardiac Surgery, University of Bonn, Bonn, Germany; and Department of Internal Medicine 3 and Institute for Clinical Immunology, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Gerhard Krönke
- Departments of *Surgery and Cardiac Surgery, University of Bonn, Bonn, Germany; and Department of Internal Medicine 3 and Institute for Clinical Immunology, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Jörg C Kalff
- Departments of *Surgery and Cardiac Surgery, University of Bonn, Bonn, Germany; and Department of Internal Medicine 3 and Institute for Clinical Immunology, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Sven Wehner
- Departments of *Surgery and Cardiac Surgery, University of Bonn, Bonn, Germany; and Department of Internal Medicine 3 and Institute for Clinical Immunology, University of Erlangen-Nürnberg, Erlangen, Germany
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Mirzaei M, Nikpour M, Bauzá A, Frontera A. On the Importance of C-H/π and C-H⋅⋅⋅H-C Interactions in the Solid State Structure of 15-Lipoxygenase Inhibitors Based on Eugenol Derivatives. Chemphyschem 2015; 16:2260-6. [PMID: 26014302 DOI: 10.1002/cphc.201500287] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Indexed: 11/09/2022]
Abstract
In this manuscript the X-ray structures of two potent and known inhibitors of 15-lipoxygenase, that is, 4-allyl-2-methoxyphenyl-1-admantanecarboxylate (1) and allyl-2-methoxyphenyl-1-cyclohexanecarboxylate (2), are reported. Their solid-state architectures show that they have a strong ability to establish C-H/π and C-H⋅⋅⋅H-C interactions. For the former interaction, the adamantane or cyclohexane moieties are the C-H donors and the electron-rich methoxyphenyl ring is the π system. For the latter, the C-H bonds belong to the aliphatic rings of the inhibitors. Interestingly, the active site of lipoxygenase enzyme family is rich in isoleucine and leucine amino acids that participate in the binding of the unsaturated fatty acid substrate by means of multiple hydrophobic C-H⋅⋅⋅H-C interactions. By means of theoretical calculations, we analyze the ability of compounds 1 and 2 to establish C-H/π and C-H⋅⋅⋅H-C interactions in the solid state.
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Affiliation(s)
- Masoud Mirzaei
- Department of Chemistry, Ferdowsi University of Mashhad, Mashhad 917751436 (Iran).
| | - Mohsen Nikpour
- Department of Chemistry, School of Sciences, Ahvaz Branch, Islamic Azad University, Ahvaz 6134968875 (Iran)
| | - Antonio Bauzá
- Department of Chemistry, Universitat de les Illes Balears, 07122 Palma de Mallorca (Baleares) (Spain)
| | - Antonio Frontera
- Department of Chemistry, Universitat de les Illes Balears, 07122 Palma de Mallorca (Baleares) (Spain).
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Kölliker Frers R, Bisoendial R, Montoya S, Kerzkerg E, Castilla R, Tak P, Milei J, Capani F. Psoriasis and cardiovascular risk: Immune-mediated crosstalk between metabolic, vascular and autoimmune inflammation. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.ijcme.2015.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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