1
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González-González S, Franco-Pérez M, Jardínez C, Cariño-Moreno JJ, Ramírez-Sotelo MG, Zamudio-Medina A. Synthesis, characterization, and quantum chemistry local chemical reactivity description of new phosphorylated derivatives of piperazine. PHOSPHORUS SULFUR 2023. [DOI: 10.1080/10426507.2023.2193404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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2
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Loharch S, Berlicki Ł. Rational Development of Bacterial Ureases Inhibitors. CHEM REC 2022; 22:e202200026. [PMID: 35502852 DOI: 10.1002/tcr.202200026] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/28/2022] [Indexed: 12/23/2022]
Abstract
Urease, an enzyme that catalyzes the hydrolysis of urea, is a virulence factor of various pathogenic bacteria. In particular, Helicobacter pylori, that colonizes the digestive tract and Proteus spp., that can infect the urinary tract, are related to urease activity. Therefore, urease inhibitors are considered as potential therapeutics against these infections. This review describes current knowledge of the structures, activity, and biological importance of bacterial ureases. Moreover, the structure-based design of several classes of bacterial urease inhibitors is presented and discussed. Phosphinic and phosphonic acids were applied as transition-state analogues, while Michael acceptors and ebselen derivatives were applied as covalent binders of cysteine residue. This review incorporates bacterial urease inhibitors from literature published between 2008 and 2021.
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Affiliation(s)
- Saurabh Loharch
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Łukasz Berlicki
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
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3
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Yang W, Feng Q, Peng Z, Wang G. An overview on the synthetic urease inhibitors with structure-activity relationship and molecular docking. Eur J Med Chem 2022; 234:114273. [PMID: 35305460 DOI: 10.1016/j.ejmech.2022.114273] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/04/2022] [Accepted: 03/08/2022] [Indexed: 01/06/2023]
Abstract
Urease is a kind of enzyme which could be found in various bacteria, fungi, plants, and algae, which can quickly catalyze the hydrolysis of urea into ammonia and carbon dioxide. With the ammonia concentration increasing, the activity of Helicobacter pylori has got an obvious enhancement and leads to mucosal damage in the stomach, gastroduodenal infection, peptic ulcers, and gastric cancer. The infectious diseases caused by Helicobacter pylori can be controlled to a certain extent by inhibiting urease activity with urease inhibitors. Hence, studies of urease inhibitors have attracted great attention all over the world and a variety of effective urease inhibitors have been synthesized in recent years. In this review, we will draw summaries for these inhibitors including urease inhibitory activity, inhibition kinetics, structure-activity relationship, and molecular docking. The collected information is expected to provide rational guidance and effective strategy to develop novel, potent, and safe urease inhibitors for better practical applications in the future.
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Affiliation(s)
- Wei Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China; Teaching and Research Section of Natural Medicinal Chemistry, School of Pharmacy, Guizhou Medical University, Guiyang, China
| | - Qianqian Feng
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China; Teaching and Research Section of Natural Medicinal Chemistry, School of Pharmacy, Guizhou Medical University, Guiyang, China
| | - Zhiyun Peng
- Office of Drug Clinical Trial Institutions, The Affiliated Hospital of Guizhou Medical University, Guiyang, China.
| | - Guangcheng Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China; Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University, Guiyang, China.
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4
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Shah S, Khan M, Ali M, Wadood A, Ur Rehman A, Shah Z, Yousaf M, Salar U, Khan KM. Bis-1,3,4-Oxadiazole Derivatives as Novel and Potential Urease Inhibitors; Synthesis, In Vitro, and In Silico Studies. Med Chem 2022; 18:820-830. [PMID: 35232342 DOI: 10.2174/1573406418666220301161934] [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: 09/02/2021] [Revised: 12/22/2021] [Accepted: 01/06/2022] [Indexed: 11/22/2022]
Abstract
AIMS Synthesis of bis-1,3,4-oxadiazole derivatives as novel and potential urease inhibitors. BACKGROUND Despite many important biological activities associated with oxadiazoles, they are still neglected by medicinal chemists for their possible urease inhibitory activity. Keeping in view the countless importance of urease inhibitors, we have synthesized a new library of substituted bis-oxadiazole derivatives (1-21) to evaluate their urease inhibitory potential. OBJECTIVE Synthesis of substituted bis-oxadiazole derivatives (1-21) to evaluate their urease inhibitory potential. METHOD Bis-1,3,4-oxadiazole derivatives 1-21 were synthesized through sequential reactions using starting material isophthalic acid. Esterification reaction was done by refluxing in methanol for 2 h in the presence of the catalytic amount of concentrated H2SO4 till dissolution. In the second step, dimethyl isophthalate and hydrazine hydrate in excess (1:5) were refluxed in methanol to afford isophthalic dihydrazide. Then, isophthalic dihydrazide was treated with different substituted benzaldehydes in a 1:2 ratio under acidic conditions Result: In vitro urease, the inhibitory activity of the synthesized compounds were evaluated and results demonstrated good activities with IC50 values in the range of 13.46 ± 0.34 to 74.45 ± 3.81 µM as compared to the standard thiourea (IC50 = 21.13 ± 0.415 µM). Most of the compounds were found to be more potent than the standard. The structure-activity relationship (SAR) suggested that the variations in the inhibitory activities of the compounds were due to different substitutions. Furthermore; in silico study was also performed. CONCLUSION Current study identified a new class of urease inhibitors. All synthetic compounds 1-21 showed potent as well as good to moderate urease inhibitory activities except 3. SAR suggested that hydroxy-bearing analogs were identified exceptionally good. Molecular docking revealed many important interactions made by compounds with the active site of the urease enzyme.
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Affiliation(s)
- Sana Shah
- Department of Chemistry, Abdul Wali Khan University, Mardan-23200, Khyber Pakhtunkhwa, Pakistan
| | - Momin Khan
- Department of Chemistry, Abdul Wali Khan University, Mardan-23200, Khyber Pakhtunkhwa, Pakistan
| | - Mahboob Ali
- Department of Biochemistry, Abdul Wali Khan University, Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Abdul Wadood
- School of Biological Sciences, University of California, Irvine, CA 92697-3900, U.S.A
| | - Ashfaq Ur Rehman
- Department of Chemistry, Bacha Khan University Charsadda, Charsadda-24420, Pakistan
| | - Zarbad Shah
- Department of Chemistry, Abdul Wali Khan University, Mardan-23200, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Yousaf
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Uzma Salar
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Khalid Mohammed Khan
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 31441, Dammam, Saudi Arabia
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5
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Zamudio-Medina A, Pérez-Hernández N, Castrejón-Flores JL, Romero-García S, Prado-García H, Bañuelos-Hernández A, Franco-Pérez M. Obtaining symmetric and asymmetric bisphosphoramidates and bisphosphoramidothioates by a single step multicomponent reaction. PHOSPHORUS SULFUR 2021. [DOI: 10.1080/10426507.2021.1878358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Angel Zamudio-Medina
- Unidad Profesional Interdisciplinaria de Biotecnología, Instituto Politécnico Nacional, CDMX, México
| | - Nury Pérez-Hernández
- Escuela Nacional de Medicina y Homeopatía, Instituto Politécnico Nacional, CDMX, México
| | | | - Susana Romero-García
- Department of Chronic-Degenerative Diseases, National Institute of Respiratory Diseases “Ismael Cosío Villegas”, Mexico City, Mexico
| | - Heriberto Prado-García
- Department of Chronic-Degenerative Diseases, National Institute of Respiratory Diseases “Ismael Cosío Villegas”, Mexico City, Mexico
| | | | - Marco Franco-Pérez
- Departamento de Física y Química Teórica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, CDMX, México
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6
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Pagoni A, Grabowiecka A, Tabor W, Mucha A, Vassiliou S, Berlicki Ł. Covalent Inhibition of Bacterial Urease by Bifunctional Catechol-Based Phosphonates and Phosphinates. J Med Chem 2020; 64:404-416. [PMID: 33369409 DOI: 10.1021/acs.jmedchem.0c01143] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this study, a new class of bifunctional inhibitors of bacterial ureases, important molecular targets for antimicrobial therapies, was developed. The structures of the inhibitors consist of a combination of a phosphonate or (2-carboxyethyl)phosphinate functionality with a catechol-based fragment, which are designed for complexation of the catalytic nickel ions and covalent bonding with the thiol group of Cys322, respectively. Compounds with three types of frameworks, including β-3,4-dihydroxyphenyl-, α-3,4-dihydroxybenzyl-, and α-3,4-dihydroxybenzylidene-substituted derivatives, exhibited complex and varying structure-dependent kinetics of inhibition. Among irreversible binders, methyl β-(3,4-dihydroxyphenyl)-β-(2-carboxyethyl)phosphorylpropionate was observed to be a remarkably reactive inhibitor of Sporosarcina pasteurii urease (kinact/KI = 10 420 s-1 M-1). The high potential of this group of compounds was also confirmed in Proteus mirabilis whole-cell-based inhibition assays. Some compounds followed slow-binding and reversible kinetics, e.g., methyl β-(3,4-dihydroxyphenyl)-β-phosphonopropionate, with Ki* = 0.13 μM, and an atypical low dissociation rate (residence time τ = 205 min).
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Affiliation(s)
- Aikaterini Pagoni
- Laboratory of Organic Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis, Zografou, 15701 Athens, Greece
| | - Agnieszka Grabowiecka
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Wojciech Tabor
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Artur Mucha
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Stamatia Vassiliou
- Laboratory of Organic Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis, Zografou, 15701 Athens, Greece
| | - Łukasz Berlicki
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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7
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Fiori-Duarte AT, Rodrigues RP, Kitagawa RR, Kawano DF. Insights into the Design of Inhibitors of the Urease Enzyme - A Major Target for the Treatment of Helicobacter pylori Infections. Curr Med Chem 2020; 27:3967-3982. [PMID: 30827224 DOI: 10.2174/0929867326666190301143549] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 02/01/2019] [Accepted: 02/19/2019] [Indexed: 12/12/2022]
Abstract
Expressed by a variety of plants, fungi and bacteria, the urease enzyme is directly associated with the virulence factor of many bacteria, including Helicobacter pylori, a gram-negative bacterium related to several gastrointestinal diseases and responsible for one of the most frequent bacterial infections throughout the world. The Helicobacter pylori Urease (HPU) is a nickel-dependent metalloenzyme expressed in response to the environmental stress caused by the acidic pH of the stomach. The enzyme promotes the increase of gastric pH through acid neutralization by the products of urea hydrolysis, then critically contributing to the colonization and pathogenesis of the microorganism. At the same time, standard treatments for Helicobacter pylori infections have limitations such as the increasing bacterial resistance to the antibiotics used in the clinical practice. As a strategy for the development of novel treatments, urease inhibitors have proved to be promising, with a wide range of chemical compounds, including natural, synthetic and semisynthetic products to be researched and potentially developed as new drugs. In this context, this review highlights the advances in the field of HPU inhibition, presenting and discussing the basis for the research of new molecules aiming at the identification of more efficient therapeutic entities.
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Affiliation(s)
- Ana Thereza Fiori-Duarte
- Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP, Rua Candido Portinari 200, 13083-871 Campinas, SP, Brazil
| | - Ricardo Pereira Rodrigues
- Department of Pharmaceutical Sciences, Health Sciences Center - CCS, Federal University of Espírito Santo - UFES, Av. Marechal Campos 1468, 29047-105 Vitoria, ES, Brazil
| | - Rodrigo Rezende Kitagawa
- Department of Pharmaceutical Sciences, Health Sciences Center - CCS, Federal University of Espírito Santo - UFES, Av. Marechal Campos 1468, 29047-105 Vitoria, ES, Brazil
| | - Daniel Fábio Kawano
- Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP, Rua Candido Portinari 200, 13083-871 Campinas, SP, Brazil.,Institute of Chemistry, University of Campinas - UNICAMP, Rua Josué de Castro s/n, 13083-970 Campinas, SP, Brazil
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8
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Loubet P, Ranfaing J, Dinh A, Dunyach-Remy C, Bernard L, Bruyère F, Lavigne JP, Sotto A. Alternative Therapeutic Options to Antibiotics for the Treatment of Urinary Tract Infections. Front Microbiol 2020; 11:1509. [PMID: 32719668 PMCID: PMC7350282 DOI: 10.3389/fmicb.2020.01509] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 06/10/2020] [Indexed: 12/29/2022] Open
Abstract
Urinary tract infections (UTIs) mainly caused by Uropathogenic Escherichia coli (UPEC), are common bacterial infections. Many individuals suffer from chronically recurring UTIs, sometimes requiring long-term prophylactic antibiotic regimens. The global emergence of multi-drug resistant uropathogens in the last decade underlines the need for alternative non-antibiotic therapeutic and preventative strategies against UTIs. The research on non-antibiotic therapeutic options in UTIs has focused on the following phases of the pathogenesis: colonization, adherence of pathogens to uroepithelial cell receptors and invasion. In this review, we discuss vaccines, small compounds, nutraceuticals, immunomodulating agents, probiotics and bacteriophages, highlighting the challenges each of these approaches face. Most of these treatments show interesting but only preliminary results. Lactobacillus-containing products and cranberry products in conjunction with propolis have shown the most robust results to date and appear to be the most promising new alternative to currently used antibiotics. Larger efficacy clinical trials as well as studies on the interplay between non-antibiotic therapies, uropathogens and the host immune system are warranted.
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Affiliation(s)
- Paul Loubet
- VBMI, INSERM U1047, Université de Montpellier, Service des Maladies Infectieuses et Tropicales, CHU Nîmes, Nîmes, France
| | - Jérémy Ranfaing
- VBMI, INSERM U1047, Université de Montpellier, Service de Microbiologie et Hygiène Hospitalière, CHU Nîmes, Nîmes, France
| | - Aurélien Dinh
- Service des Maladies Infectieuses, AP-HP Raymond-Poincaré, Garches, France
| | - Catherine Dunyach-Remy
- VBMI, INSERM U1047, Université de Montpellier, Service de Microbiologie et Hygiène Hospitalière, CHU Nîmes, Nîmes, France
| | - Louis Bernard
- PRES Centre Val de Loire, Université François Rabelais de Tours, Tours, France.,Service des Maladies Infectieuses, CHU Tours, Tours, France
| | - Franck Bruyère
- PRES Centre Val de Loire, Université François Rabelais de Tours, Tours, France.,Service d'Urologie, CHU Tours, Tours, France
| | - Jean-Philippe Lavigne
- VBMI, INSERM U1047, Université de Montpellier, Service de Microbiologie et Hygiène Hospitalière, CHU Nîmes, Nîmes, France
| | - Albert Sotto
- VBMI, INSERM U1047, Université de Montpellier, Service des Maladies Infectieuses et Tropicales, CHU Nîmes, Nîmes, France
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9
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Gholivand K, Pooyan M, Mohammadpanah F, Pirastefar F, Junk PC, Wang J, Ebrahimi Valmoozi AA, Mani-Varnosfaderani A. Synthesis, crystal structure and biological evaluation of new phosphoramide derivatives as urease inhibitors using docking, QSAR and kinetic studies. Bioorg Chem 2019; 86:482-493. [DOI: 10.1016/j.bioorg.2019.01.064] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 01/20/2019] [Accepted: 01/27/2019] [Indexed: 12/24/2022]
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10
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Saravanakumar K, Chellia R, Hu X, Kathiresan K, Oh DH, Wang MH. Eradication of Helicobacter pylori through the inhibition of urease and peptide deformylase: Computational and biological studies. Microb Pathog 2019; 128:236-244. [DOI: 10.1016/j.micpath.2019.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 12/26/2018] [Accepted: 01/02/2019] [Indexed: 12/31/2022]
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11
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Larik FA, Faisal M, Saeed A, Channar PA, Korabecny J, Jabeen F, Mahar IA, Kazi MA, Abbas Q, Murtaza G, Khan GS, Hassan M, Seo SY. Investigation on the effect of alkyl chain linked mono-thioureas as Jack bean urease inhibitors, SAR, pharmacokinetics ADMET parameters and molecular docking studies. Bioorg Chem 2019; 86:473-481. [PMID: 30772648 DOI: 10.1016/j.bioorg.2019.02.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/30/2019] [Accepted: 02/03/2019] [Indexed: 02/07/2023]
Abstract
The increasing resistance of pathogens to common antibiotics, as well as the need to control urease activity to improve the yield of soil nitrogen fertilization in agricultural applications, has stimulated the development of novel classes of molecules that target urease as an enzyme. In this context, the newly developed compounds on the basis of 1-heptanoyl-3-arylthiourea family were evaluated for Jack bean urease enzyme inhibition activity to validate their role as potent inhibitors of this enzyme. 1-Heptanoyl-3-arylthioureas were obtained in excellent yield and characterized through spectral and elemental analysis. All the compounds displayed remarkable potency against urease inhibition as compared to thiourea standard. It was found that novel compounds fulfill the criteria of drug-likeness by obeying Lipinski's rule of five. Particularly compound 4a and 4c can serve as lead molecules in 4D (drug designing discovery and development). Kinetic mechanism and molecular docking studies also carried out to delineate the mode of inhibition and binding affinity of the molecules.
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Affiliation(s)
- Fayaz Ali Larik
- Department of Chemistry, Quaid-I-Azam University, Islamabad 45320, Pakistan.
| | - Muhammad Faisal
- Department of Chemistry, Quaid-I-Azam University, Islamabad 45320, Pakistan.
| | - Aamer Saeed
- Department of Chemistry, Quaid-I-Azam University, Islamabad 45320, Pakistan.
| | | | - Jan Korabecny
- Biomedical Research Centre, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
| | - Farukh Jabeen
- Cardiovascular and Metabolic Research Unit, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
| | - Ihsan Ali Mahar
- Department of Chemistry, Quaid-I-Azam University, Islamabad 45320, Pakistan
| | - Mehar Ali Kazi
- Institute of biochemistry, University of Sindh, Jamshoro 76080, Pakistan
| | - Qamar Abbas
- Department of Physiology, University of Sindh, Jamshoro 76080, Pakistan
| | - Ghulam Murtaza
- Department of Chemistry, Quaid-I-Azam University, Islamabad 45320, Pakistan
| | - Gul Shahzada Khan
- Department of Chemistry, Abdul Wali Khan University, Mardan, Khybder Pakhtunkhwa, Pakistan
| | - Mubashir Hassan
- Department of Biological Sciences, College of Natural Sciences, Kongju National University, 56 Gongjudehak-Ro, Gongju, Chungnam 314-701, Republic of Korea
| | - Sung-Yum Seo
- Department of Biological Sciences, College of Natural Sciences, Kongju National University, 56 Gongjudehak-Ro, Gongju, Chungnam 314-701, Republic of Korea
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12
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Isaac IO, al-Rashida M, Rahman SU, Alharthy RD, Asari A, Hameed A, Khan KM, Iqbal J. Acridine-based (thio)semicarbazones and hydrazones: Synthesis, in vitro urease inhibition, molecular docking and in-silico ADME evaluation. Bioorg Chem 2019; 82:6-16. [DOI: 10.1016/j.bioorg.2018.09.032] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/19/2018] [Accepted: 09/21/2018] [Indexed: 12/18/2022]
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13
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Ntatsopoulos V, Macegoniuk K, Mucha A, Vassiliou S, Berlicki Ł. Structural exploration of cinnamate-based phosphonic acids as inhibitors of bacterial ureases. Eur J Med Chem 2018; 159:307-316. [DOI: 10.1016/j.ejmech.2018.09.074] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 09/27/2018] [Accepted: 09/29/2018] [Indexed: 12/25/2022]
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14
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Moghimi S, Goli-Garmroodi F, Allahyari-Devin M, Pilali H, Hassanzadeh M, Mahernia S, Mahdavi M, Firoozpour L, Amanlou M, Foroumadi A. Synthesis, evaluation, and molecular docking studies of aryl urea-triazole-based derivatives as anti-urease agents. Arch Pharm (Weinheim) 2018; 351:e1800005. [DOI: 10.1002/ardp.201800005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 04/28/2018] [Accepted: 05/02/2018] [Indexed: 02/02/2023]
Affiliation(s)
- Setareh Moghimi
- The Institute of Pharmaceutical Sciences (TIPS); Tehran University of Medical Sciences; Tehran Iran
| | - Fereshteh Goli-Garmroodi
- Drug Design and Development Research Center, The Institute of Pharmaceutical Sciences (TIPS); Tehran University of Medical Sciences; Tehran Iran
| | - Maryam Allahyari-Devin
- Department of Medicinal Chemistry, School of Pharmacy; Urmia University of Medical Science; Urmia Iran
| | - Hedieh Pilali
- Drug Design and Development Research Center, The Institute of Pharmaceutical Sciences (TIPS); Tehran University of Medical Sciences; Tehran Iran
| | - Malihe Hassanzadeh
- The Institute of Pharmaceutical Sciences (TIPS); Tehran University of Medical Sciences; Tehran Iran
| | - Shabnam Mahernia
- The Institute of Pharmaceutical Sciences (TIPS); Tehran University of Medical Sciences; Tehran Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Research Institute; Tehran University of Medical Sciences; Tehran Iran
| | - Loghman Firoozpour
- Drug Design and Development Research Center, The Institute of Pharmaceutical Sciences (TIPS); Tehran University of Medical Sciences; Tehran Iran
| | - Massoud Amanlou
- The Institute of Pharmaceutical Sciences (TIPS); Tehran University of Medical Sciences; Tehran Iran
- Department of Medicinal Chemistry, Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
| | - Alireza Foroumadi
- The Institute of Pharmaceutical Sciences (TIPS); Tehran University of Medical Sciences; Tehran Iran
- Department of Medicinal Chemistry, Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
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15
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Mazzei L, Cianci M, Contaldo U, Musiani F, Ciurli S. Urease Inhibition in the Presence of N-(n-Butyl)thiophosphoric Triamide, a Suicide Substrate: Structure and Kinetics. Biochemistry 2017; 56:5391-5404. [DOI: 10.1021/acs.biochem.7b00750] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Luca Mazzei
- Laboratory
of Bioinorganic Chemistry, Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Michele Cianci
- Department
of Agricultural, Food and Environmental Sciences, Università Politecnica delle Marche, Ancona, Italy
| | - Umberto Contaldo
- Laboratory
of Bioinorganic Chemistry, Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Francesco Musiani
- Laboratory
of Bioinorganic Chemistry, Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Stefano Ciurli
- Laboratory
of Bioinorganic Chemistry, Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
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16
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Veerashekhar Goud E, Sivaramakrishna A, Vijayakrishna K, Brahmmananda Rao C, Khedkar VM, Jha PC. Synthesis, structure and DNA interaction studies of bisphosphoramides: Theoretical and experimental insights. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.02.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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17
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Potent covalent inhibitors of bacterial urease identified by activity-reactivity profiling. Bioorg Med Chem Lett 2017; 27:1346-1350. [DOI: 10.1016/j.bmcl.2017.02.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 02/08/2017] [Accepted: 02/09/2017] [Indexed: 01/21/2023]
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18
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Abdullah MAA, Abuo-Rahma GEDAA, Abdelhafez ESMN, Hassan HA, Abd El-Baky RM. Design, synthesis, molecular docking, anti-Proteus mirabilis and urease inhibition of new fluoroquinolone carboxylic acid derivatives. Bioorg Chem 2016; 70:1-11. [PMID: 27908539 DOI: 10.1016/j.bioorg.2016.11.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 09/29/2016] [Accepted: 11/06/2016] [Indexed: 11/30/2022]
Abstract
New hydroxamic acid, hydrazide and amide derivatives of ciprofloxacin in addition to their analogues of levofloxacin were prepared and identified by different spectroscopic techniques. Some of the prepared compounds revealed good activity against the urease splitting bacteria, Proteus mirabilis. The urease inhibitory activity was investigated using indophenol method. Most of the tested compounds showed better activity than the reference acetohydroxamic acid (AHA). The ciprofloxacin hydrazide derivative 3a and levofloxacin hydroxamic acid 7 experienced the highest activity (IC50=1.22μM and 2.20μM, respectively). Molecular docking study revealed high spontaneous binding ability of the tested compounds to the active site of urease.
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Affiliation(s)
- Mohammed A A Abdullah
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | | | | | - Heba A Hassan
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Rehab M Abd El-Baky
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
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19
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Rani VE, Ravindranath LK. Synthesis, Characterization and Antimicrobial Evaluation of Novel Mannich Bases Containing Pyrazole-5-One Phosphonates. ACTA ACUST UNITED AC 2016. [DOI: 10.2174/1874844901603010049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Newly synthesised compounds of phosphonates were prepared by condensation of diethylphosphate with imine which undergoes a reaction of mannich bases with pyrazole containing schiffs base. The base was prepared by condensation of aldehyde with primary amine. These newly synthesised derivatives were characterised by spectral analysis.
Objective:
Mannich bases are very important to synthesize wide variety of natural products and pharmaceuticals.
Method:
Thin Layer Chromatography was performed on aluminum sheet of silica gel 60F254, E-Merk, Germany using iodine as visualizing agent. IR Spectra were recorded as KBr pellets on Perkin-Elmer 1000 units, instruments. All 1H and 13C-NMR spectra were recorded on a Varian XL-300 spectrometer operating at 400MHz and 75 MHz. 31P-NMR spectra were recorded on a Varian XL-spectrometer operating at 161.89MHz. The compounds were dissolved in dimethylsulfoxide and Chemical shifts were referenced to Trimethylsilane (1H and 13C-NMR) and 85% phosphoric acid (31P-NMR).
Results:
Some of the novel synthetic compounds of Pyrazole Mannich base-Phosphonates showed great potential in field of medicinal chemistry and good biological activity.
Conclusion:
It can be concluded that this class of compounds certainly holds great potential for the discovery of novel classes of antimicrobial agents.
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20
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Kanduluru AK, Cirandur SR. A simple and convenient protocol for the synthesis of seven- and eight-membered phosphorus heterocycles. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2015.1072190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Macegoniuk K, Dziełak A, Mucha A, Berlicki Ł. Bis(aminomethyl)phosphinic Acid, a Highly Promising Scaffold for the Development of Bacterial Urease Inhibitors. ACS Med Chem Lett 2015; 6:146-50. [PMID: 25699141 DOI: 10.1021/ml500380f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 12/11/2014] [Indexed: 11/30/2022] Open
Abstract
Inhibitors of bacterial ureases are considered to be promising compounds in the treatment of infections caused by Helicobacter pylori in the gastric tract and/or by urealytic bacteria (e.g., Proteus species) in the urinary tract. A new, extended transition state scaffold, bis(aminomethyl)phosphinic acid, was successfully explored for the construction of effective enzyme inhibitors. A reliable methodology for the synthesis of phosphinate analogues in a three-component Mannich-type reaction was elaborated. The obtained molecules were assayed against ureases purified from Sporosarcina pasteurii and Proteus mirabilis, and aminomethyl(N-n-hexylaminomethyl)phosphinic acid was found to be the most potent inhibitor, with a K i = 108 nM against the S. pasteurii enzyme.
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Affiliation(s)
- Katarzyna Macegoniuk
- Department of Bioorganic
Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Anna Dziełak
- Department of Bioorganic
Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Artur Mucha
- Department of Bioorganic
Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Łukasz Berlicki
- Department of Bioorganic
Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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22
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Sadat A, Uddin G, Alam M, Ahmad A, Siddiqui BS. Structure activity relationship of bergenin, p-hydroxybenzoyl bergenin, 11-O-galloylbergenin as potent antioxidant and urease inhibitor isolated from Bergenia ligulata. Nat Prod Res 2015; 29:2291-4. [DOI: 10.1080/14786419.2015.1004173] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Anwar Sadat
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan
| | - Ghias Uddin
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan
| | - M. Alam
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan
| | - Ashfaq Ahmad
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan
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23
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Affiliation(s)
- Michael J Maroney
- Department of Chemistry, University of Massachusetts , Amherst, Massachusetts 01003, United States
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24
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Loes AN, Ruyle L, Arvizu M, Gresko KE, Wilson AL, Deutch CE. Inhibition of urease activity in the urinary tract pathogen Staphylococcus saprophyticus. Lett Appl Microbiol 2013; 58:31-41. [PMID: 24001038 DOI: 10.1111/lam.12153] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 08/26/2013] [Accepted: 08/26/2013] [Indexed: 12/24/2022]
Abstract
UNLABELLED Urease is a virulence factor for the Gram-positive urinary tract pathogen Staphylococcus saprophyticus. The susceptibility of this enzyme to chemical inhibition was determined using soluble extracts of Staph. saprophyticus strain ATCC 15305. Acetohydroxamic acid (Ki = 8.2 μg ml(-1) = 0.106 mmol l(-1) ) and DL-phenylalanine hydroxamic acid (Ki = 21 μg ml(-1) = 0.116 mmol l(-1) ) inhibited urease activity competitively. The phosphorodiamidate fluorofamide also caused competitive inhibition (Ki = 0.12 μg ml(-1) = 0.553 μmol l(-1) = 0.000553 mmol l(-1) ), but the imidazole omeprazole had no effect. Two flavonoids found in green tea extract [(+)-catechin hydrate (Ki = 357 μg ml(-1) = 1.23 mmol l(-1) ) and (-)-epigallocatechin gallate (Ki = 210 μg ml(-1) = 0.460 mmol l(-1) )] gave mixed inhibition. Acetohydroxamic acid, DL-phenylalanine hydroxamic acid, fluorofamide, (+)-catechin hydrate and (-)-epigallocatechin gallate also inhibited urease activity in whole cells of strains ATCC 15305, ATCC 35552 and ATCC 49907 grown in a rich medium or an artificial urine medium. Addition of acetohydroxamic acid or fluorofamide to cultures of Staph. saprophyticus in an artificial urine medium delayed the increase in pH that normally occurs during growth. These results suggest that urease inhibitors may be useful for treating urinary tract infections caused by Staph. saprophyticus. SIGNIFICANCE AND IMPACT OF THE STUDY The enzyme urease is a virulence factor for the Gram-positive urinary tract pathogen Staphylococcus saprophyticus. We have shown that urease activity in cell-free extracts and whole bacterial cells is susceptible to inhibition by hydroxamates, phosphorodiamidates and flavonoids, but not by imidazoles. Acetohydroxamic acid and fluorofamide in particular can temporarily delay the increase in pH that occurs when Staph. saprophyticus is grown in an artificial urine medium. These results suggest that urease inhibitors may be useful as chemotherapeutic agents for the treatment of urinary tract infections caused by this micro-organism.
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Affiliation(s)
- A N Loes
- School of Mathematical and Natural Sciences, Arizona State University at the West Campus, Phoenix, AZ, USA
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25
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Ibrar A, Khan I, Abbas N. Structurally Diversified Heterocycles and Related Privileged Scaffolds as Potential Urease Inhibitors: A Brief Overview. Arch Pharm (Weinheim) 2013; 346:423-46. [DOI: 10.1002/ardp.201300041] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 03/29/2013] [Accepted: 04/03/2013] [Indexed: 12/31/2022]
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Hanif M, Shoaib K, Saleem M, Hasan Rama N, Zaib S, Iqbal J. Synthesis, urease inhibition, antioxidant, antibacterial, and molecular docking studies of 1,3,4-oxadiazole derivatives. ISRN PHARMACOLOGY 2012; 2012:928901. [PMID: 22934191 PMCID: PMC3425833 DOI: 10.5402/2012/928901] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Accepted: 06/24/2012] [Indexed: 11/23/2022]
Abstract
A series of eighteen 1,3,4-oxadiazole derivatives have been synthesized by treating aromatic acid hydrazides with carbon disulfide in ethanolic potassium hydroxide yielding potassium salts of 1,3,4-oxadiazoles. Upon neutralization with 1 N hydrochloric acid yielded crude crystals of 1,3,4-oxadiazoles, which were purified by recrystallization in boiling methanol. The synthesized 1,3,4-oxadiazoles derivatives were evaluated in vitro for their urease inhibitory activities, most of the investigated compounds were potent inhibitors of Jack bean urease. The molecular docking studies were performed by docking them into the crystal structure of Jack bean urease to observe the mode of interaction of synthesized compounds. The synthesized compounds were also tested for antibacterial and antioxidant activities and some derivatives exhibited very promising results.
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Affiliation(s)
- Muhammad Hanif
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
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27
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Shahzada SA, Yar M, Khan ZA, Khan IU, Naqvi SAR, Mahmood N, Khan KM. Microwave-assisted solvent free efficient synthesis of 1,3,4-oxadiazole-2(3H)-thiones and their potent in vitro urease inhibition activity. ACTA ACUST UNITED AC 2012. [DOI: 10.5155/eurjchem.3.2.143-146.551] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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28
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Ariz I, Cruchaga S, Lasa B, Moran JF, Jauregui I, Aparicio-Tejo PM. The physiological implications of urease inhibitors on N metabolism during germination of Pisum sativum and Spinacea oleracea seeds. JOURNAL OF PLANT PHYSIOLOGY 2012; 169:673-81. [PMID: 22405591 DOI: 10.1016/j.jplph.2012.01.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Revised: 12/15/2011] [Accepted: 01/02/2012] [Indexed: 05/11/2023]
Abstract
The development of new nitrogen fertilizers is necessary to optimize crop production whilst improving the environmental aspects arising from the use of nitrogenous fertilization as a cultural practice. The use of urease inhibitors aims to improve the efficiency of urea as a nitrogen fertilizer by preventing its loss from the soil as ammonia. However, although the action of urease inhibitors is aimed at the urease activity in soil, their availability for the plant may affect its urease activity. The aim of this work was therefore to evaluate the effect of two urease inhibitors, namely acetohydroxamic acid (AHA) and N-(n-butyl) thiophosphoric triamide (NBPT), on the germination of pea and spinach seeds. The results obtained show that urease inhibitors do not affect the germination process to any significant degree, with the only process affected being imbibition in spinach, thus also suggesting different urease activities for both plants. Our findings therefore suggest an activity other than the previously reported urolytic activity for urease in spinach. Furthermore, of the two inhibitors tested, NBPT was found to be the most effective at inhibiting urease activity, especially in pea seedlings.
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Affiliation(s)
- Idoia Ariz
- Instituto de Agrobiotecnología-IdAB, CSIC-UPNa-GN, 31192 Mutilva Baja, Navarra, Spain
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29
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Berlicki L, Bochno M, Grabowiecka A, Białas A, Kosikowska P, Kafarski P. N-substituted aminomethanephosphonic and aminomethane-P-methylphosphinic acids as inhibitors of ureases. Amino Acids 2011; 42:1937-45. [PMID: 21559954 PMCID: PMC3325405 DOI: 10.1007/s00726-011-0920-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Accepted: 04/16/2011] [Indexed: 10/31/2022]
Abstract
Small unextended molecules based on the diamidophosphate structure with a covalent carbon-to-phosphorus bond to improve hydrolytic stability were developed as a novel group of inhibitors to control microbial urea decomposition. Applying a structure-based inhibitor design approach using available crystal structures of bacterial urease, N-substituted derivatives of aminomethylphosphonic and P-methyl-aminomethylphosphinic acids were designed and synthesized. In inhibition studies using urease from Bacillus pasteurii and Canavalia ensiformis, the N,N-dimethyl derivatives of both lead structures were most effective with dissociation constants in the low micromolar range (Ki=13±0.8 and 0.62±0.09 μM, respectively). Whole-cell studies on a ureolytic strain of Proteus mirabilis showed the high efficiency of N,N-dimethyl and N-methyl derivatives of aminomethane-P-methylphosphinic acids for urease inhibition in pathogenic bacteria. The high hydrolytic stability of selected inhibitors was confirmed over a period of 30 days using NMR technique.
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Affiliation(s)
- Lukasz Berlicki
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland.
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30
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Kosikowska P, Berlicki Ł. Urease inhibitors as potential drugs for gastric and urinary tract infections: a patent review. Expert Opin Ther Pat 2011; 21:945-57. [PMID: 21457123 DOI: 10.1517/13543776.2011.574615] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
INTRODUCTION Urease is the enzyme that catalyzes the hydrolysis of urea, which is involved in serious infections caused by Helicobacter pylori in the gastric tract, as well as Proteus and related species in the urinary tract. The necessity to treat such infections has stimulated intensive studies on various groups of urease inhibitors. AREAS COVERED Patent literature on urease inhibitors with possible applications in medicine is reviewed in this paper. Hydroxamic acids, phosphoramidates, urea derivatives, quinones and heterocyclic compounds constitute the major classes of structures with such activity. EXPERT OPINION Until now, only one compound, acetohydroxamic acid, has been clinically used for the treatment of urinary tract infections by urease inhibition. Unfortunately, it exhibits severe side effects. Thus, it seems that the full potential of urease inhibition has not yet been fully explored. Several Japanese patents related to the use of herbal extracts as sources of polyphenolic urease inhibitors have been considered as complementary or alternative therapy; however, their accessibility is quite possibly due to reduced restrictions for the introduction of natural products to the market.
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Affiliation(s)
- Paulina Kosikowska
- Wrocław University of Technology, Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław, Poland
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31
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32
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Vassiliou S, Grabowiecka A, Kosikowska P, Yiotakis A, Kafarski P, Berlicki Ł. Design, Synthesis, and Evaluation of Novel Organophosphorus Inhibitors of Bacterial Ureases. J Med Chem 2008; 51:5736-44. [DOI: 10.1021/jm800570q] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stamatia Vassiliou
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland, Laboratory of Organic Chemistry, Department of Chemistry, University of Athens, Panepistimopolis, Zografou, 15771 Athens, Greece
| | - Agnieszka Grabowiecka
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland, Laboratory of Organic Chemistry, Department of Chemistry, University of Athens, Panepistimopolis, Zografou, 15771 Athens, Greece
| | - Paulina Kosikowska
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland, Laboratory of Organic Chemistry, Department of Chemistry, University of Athens, Panepistimopolis, Zografou, 15771 Athens, Greece
| | - Athanasios Yiotakis
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland, Laboratory of Organic Chemistry, Department of Chemistry, University of Athens, Panepistimopolis, Zografou, 15771 Athens, Greece
| | - Paweł Kafarski
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland, Laboratory of Organic Chemistry, Department of Chemistry, University of Athens, Panepistimopolis, Zografou, 15771 Athens, Greece
| | - Łukasz Berlicki
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland, Laboratory of Organic Chemistry, Department of Chemistry, University of Athens, Panepistimopolis, Zografou, 15771 Athens, Greece
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Zhang L, Mulrooney SB, Leung AFK, Zeng Y, Ko BBC, Hausinger RP, Sun H. Inhibition of urease by bismuth(III): Implications for the mechanism of action of bismuth drugs. Biometals 2006; 19:503-11. [PMID: 16937256 DOI: 10.1007/s10534-005-5449-0] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2005] [Accepted: 11/24/2005] [Indexed: 01/22/2023]
Abstract
Bismuth compounds are widely used for the treatment of peptic ulcers and Helicobacter pylori infections. It has been suggested that enzyme inhibition plays an important role in the antibacterial activity of bismuth towards this bacterium. Urease, an enzyme that converts urea into ammonia and carbonic acid, is crucial for colonization of the acidic environment of the stomach by H. pylori. Here, we show that three bismuth complexes exhibit distinct mechanisms of urease inhibition, with some differences dependent on the source of the enzyme. Bi(EDTA) and Bi(Cys)(3) are competitive inhibitors of jack bean urease with K(i) values of 1.74 +/- 0.14 and 1.84 +/- 0.15 mM, while the anti-ulcer drug, ranitidine bismuth citrate (RBC) is a non-competitive inhibitor with a K (i) value of 1.17 +/- 0.09 mM. A (13)C NMR study showed that Bi(Cys)(3) reacts with jack bean urease during a 30 min incubation, releasing free cysteines from the metal complex. Upon incubation with Bi(EDTA) and RBC, the number of accessible cysteine residues in the homohexameric plant enzyme decreased by 5.80 +/- 0.17 and 11.94 +/- 0.13, respectively, after 3 h of reaction with dithiobis(2-nitrobenzoic acid). Kinetic analysis showed that Bi(EDTA) is both a competitive inhibitor and a time-dependent inactivator of the recombinant Klebsiella aerogenes urease. The active C319A mutant of the bacterial enzyme displays a significantly reduced sensitivity toward inactivation by Bi(EDTA) compared with the wild-type enzyme, consistent with binding of Bi(3+) to the active site cysteine (Cys(319)) as the mechanism of enzyme inactivation.
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Affiliation(s)
- Li Zhang
- Department of Chemistry and Open Laboratory of Chemical Biology, The University of Hong Kong, Pokfulam, Hong Kong, PR China
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Tarun EI, Rubinov DB, Metelitza DI. Inhibition of soybean urease by triketone oximes. BIOCHEMISTRY. BIOKHIMIIA 2004; 69:1344-52. [PMID: 15627389 DOI: 10.1007/s10541-005-0079-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Competitive inhibition of soybean urease by 15 triketone oximes has been studied at 36 degrees C in aqueous solution (pH 4.95). The studied oximes are supposed chelators for the nickel atom in the urease metallocenter. The inhibition constants of urea hydrolysis (K(i)) varied in the range 2.7-248 microM depending on the oxime structure. Analysis of this dependency demonstrates that the optimal inhibitor is the one containing carbonyl group in position 1 of the cycle, the ethoxyimino group and alkyl residue in the substituent in position 2, as well as the methoxycarbonyl group in position 4 of the cycle.
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Affiliation(s)
- E I Tarun
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Minsk 220141, Belarus
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Abstract
A variety of alpha-hydroxyketones (1-13) and alpha-diketones (14-20) were evaluated for their effect on the jack bean urease. Of 13 alpha-hydroxyketones (1-13) tested, 2,2'-thenoin (10) (IC(50)=0.18 mM), furoin (9) (IC(50)=0.36 mM), 2-hydroxy-1-phenylethanone (5) (IC(50)=0.47 mM) and acetol (1) (IC(50)=2.9 mM) showed potent inhibitory activity against the enzyme, comparable with hydroxyurea (IC(50)=0.1 mM). The inhibitory effects were completely blocked by 2-mercaptoethanol or dithiothreitol. A nickel ion influenced the inhibitory effects of 5 and 9 in a dose-dependent manner, but not of 1 and 10. On the other hand, the corresponding alpha-diketones such as 2,2'-thenil (20), furil (19) and PhCOCHO (14) exhibited little or no ability to inhibit the urease. We have demonstrated for the first time that some alpha-hydroxyketone derivatives show urease inhibitory activity, possibly by binding to cysteinyl residues in the active site.
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Affiliation(s)
- Toru Tanaka
- Faculty of Pharmaceutical Sciences, Josai University, Sakado, Saitama 350-0295, Japan
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36
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Abstract
A variety of alpha,beta-unsaturated ketones were evaluated for their effect on the jack bean urease. Of 35 compounds tested, 2-cyclohepten-1-one (1), 2-cyclohexen-1-one (2), 2-cyclopenten-1-one (3), and 5,6-dihydro-2H-pyran-2-one (4) showed potent inhibitory activities against the enzyme. The most potent compound (1) (IC50=0.16 mM) showed similar inhibitory potency to hydroxyurea (IC50=0.095 mM). The inhibitory effects of 1, 2, 3, and 4 were significantly reduced by 2-mercaptoethanol or dithiothreitol. These data suggest that alpha,beta-unsaturated ketones inhibited the urease activity, possibly by a Michael-like addition of a protein SH group to the double bond of the alpha,beta-unsaturated carbonyl group.
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Affiliation(s)
- Toru Tanaka
- Faculty of Pharmaceutical Sciences, Josai University, Sakado, Saitama 350-0295, Japan
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Mishra H, Parrill AL, Williamson JS. Three-dimensional quantitative structure-activity relationship and comparative molecular field analysis of dipeptide hydroxamic acid Helicobacter pylori urease inhibitors. Antimicrob Agents Chemother 2002; 46:2613-8. [PMID: 12121941 PMCID: PMC127352 DOI: 10.1128/aac.46.8.2613-2618.2002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2001] [Revised: 03/01/2002] [Accepted: 05/01/2002] [Indexed: 11/20/2022] Open
Abstract
A homology model of Helicobacter pylori urease was developed by using the crystal structure of urease from Klebsiella aerogenes (EC 3.5.1.5) as a template. The acetohydroxamic acid moiety was docked into the active pocket of the enzyme model, followed by relaxation of the complex by use of molecular dynamics. The resulting conformation was used as a template to construct 24 potential dipeptide hydroxamic acid inhibitors with which comparative molecular field analysis (CoMFA) was performed. The resulting model provided a cross-validation correlation coefficient (q(2)(L00)) of 0.610, a conventional r(2) value of 0.988, and an F (Fisher indication of statistical significance) value of 294.88. We were able to validate the CoMFA model by using the 50% inhibitory concentrations of six compounds that were not included in the construction of the model. A very good structural correlation was observed between the amino acids in the model urease's active pocket and the contour maps derived from the CoMFA model. This correlation, accompanied by the validation supplied by use of the CoMFA data, illustrates that the model can aid in the prediction and design of novel H. pylori urease inhibitors.
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Affiliation(s)
- Hetal Mishra
- Department of Medicinal Chemistry, University of Mississippi, University, MS 38677
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38
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Rektorschek M, Weeks D, Sachs G, Melchers K. Influence of pH on metabolism and urease activity of Helicobacter pylori. Gastroenterology 1998; 115:628-41. [PMID: 9721160 DOI: 10.1016/s0016-5085(98)70142-8] [Citation(s) in RCA: 100] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS The metabolic and urease responses of Helicobacter pylori to variations in gastric acidity are unknown. The aim of this study was to determine effects of changes of environmental pH on metabolism, urease activity, and survival of H. pylori in an unbuffered environment. METHODS Bacterial metabolism and urease activity were determined by measuring pH changes in perfused microphysiometer chambers over a pH range from 2.5 to 9.0 with or without urea and survival by restoration of metabolism at pH 7.4. RESULTS Glucose metabolism by acid-adapted H. pylori occurred at a perfusion pH between 3.5 and 8.6 and was highest between 7.4 and 8.2. Metabolism was irreversibly inhibited at pH <3.5 or >8.6. In the presence of 2.5 mmol/L urea, the chamber pH increased to about 6.2 during perfusion between pH 5.5 and 4.0. At pH 4.0 and below, urease activity increased several-fold without change of chamber pH. Urea in the perfusate enabled retention of metabolism after acid exposure but was toxic at pH 7.4. CONCLUSIONS The metabolic range of acid-adapted H. pylori is between an environmental pH of 3.5 and 8.6. Extracellular pH-regulated internal urease activity allows metabolism in the pH range between 4.0 and 2. 5 by maintaining periplasmic pH at 6.2. The organism is an acid-tolerant neutralophile due to internal urease activity.
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Affiliation(s)
- M Rektorschek
- Department of Molecular Biology, Byk Gulden Pharmaceuticals, Konstanz, Germany
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Scott DR, Weeks D, Hong C, Postius S, Melchers K, Sachs G. The role of internal urease in acid resistance of Helicobacter pylori. Gastroenterology 1998; 114:58-70. [PMID: 9428219 DOI: 10.1016/s0016-5085(98)70633-x] [Citation(s) in RCA: 191] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND & AIMS The relative role of internal urease for acid protection of Helicobacter pylori is unknown. The aim of this study was to determine the comparative importance of internal and external urease under acidic conditions. METHODS The pH optimum and measured Michaelis constant for urea of external urease and urease in intact bacteria at different medium pH (pHout) were measured using 14CO2 release from 14C-urea. The effect of urea on membrane potential and bacterial cytoplasmic pH was measured at different fixed pHout. 35S-methionine labeling and sodium dodecyl sulfate-polyacrylamide gel electrophoresis of labeled proteins in the organism and medium measured protein synthesis at different pHout and mechanisms of urease externalization. RESULTS External urease had activity between pH 5.0 and 8.5 and internal urease between pHout 2.5 and 6.5, and its Michaelis constant at pHout 7.5 was 300 mmol/L but at pHout 4.5 was 0.5 mmol/L, similar to free urease. The addition of 5 mmol/L urea to bacteria at fixed pHout from 3.0 to 6.0 elevated potential to about -105 mV and periplasmic pH to about pH 6.2. Protein synthesis occurred mainly between pH 6.5 and 8.0, and urease activity resulted in increased protein synthesis at acidic pH. The labeling pattern of intrabacterial and released protein was similar. CONCLUSIONS Intracellular urease activity is regulated by external pH, defends against gastric acidity by increasing periplasmic pH and membrane potential, and stimulates protein synthesis at acidic pH. External urease is produced mostly by cell lysis.
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Affiliation(s)
- D R Scott
- VA Medical Center West Los Angeles, California, USA
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Abstract
Urease (urea amidohydrolase; EC 3.5.1.5) catalyzes the hydrolysis of urea to yield ammonia and carbamate. The latter compound spontaneously decomposes to yield another molecule of ammonia and carbonic acid. The urease phenotype is widely distributed across the bacterial kingdom, and the gene clusters encoding this enzyme have been cloned from numerous bacterial species. The complete nucleotide sequence, ranging from 5.15 to 6.45 kb, has been determined for five species including Bacillus sp. strain TB-90, Klebsiella aerogenes, Proteus mirabilis, Helicobacter pylori, and Yersinia enterocolitica. Sequences for selected genes have been determined for at least 10 other bacterial species and the jack bean enzyme. Urease synthesis can be nitrogen regulated, urea inducible, or constitutive. The crystal structure of the K. aerogenes enzyme has been determined. When combined with chemical modification studies, biophysical and spectroscopic analyses, site-directed mutagenesis results, and kinetic inhibition experiments, the structure provides important insight into the mechanism of catalysis. Synthesis of active enzyme requires incorporation of both carbon dioxide and nickel ions into the protein. Accessory genes have been shown to be required for activation of urease apoprotein, and roles for the accessory proteins in metallocenter assembly have been proposed. Urease is central to the virulence of P. mirabilis and H. pylori. Urea hydrolysis by P. mirabilis in the urinary tract leads directly to urolithiasis (stone formation) and contributes to the development of acute pyelonephritis. The urease of H. pylori is necessary for colonization of the gastric mucosa in experimental animal models of gastritis and serves as the major antigen and diagnostic marker for gastritis and peptic ulcer disease in humans. In addition, the urease of Y. enterocolitica has been implicated as an arthritogenic factor in the development of infection-induced reactive arthritis. The significant progress in our understanding of the molecular biology of microbial ureases is reviewed.
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Affiliation(s)
- H L Mobley
- Division of Infectious Diseases, University of Maryland School of Medicine, Baltimore 21201, USA
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