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Sana T, Zehra S, Khan M, Siddiqui BS, Simjee SU, Begum S, Hadda TB. Urease and human glioblastoma (U87) cells growth inhibitory iridoid glycoside acetates from Nyctanthes arbor-tristis Linn. Nat Prod Res 2024:1-9. [PMID: 38646805 DOI: 10.1080/14786419.2024.2340059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 03/29/2024] [Indexed: 04/23/2024]
Abstract
The present study was undertaken on the chemical constituents of ethanol extract of aerial parts of Nyctanthes arbor-tristis Linn., and their determination of growth inhibitory activity against glioblastoma multiforme cell line (U87) and urease inhibitory activity. Six constituents were isolated including two new arbortristoside F tetraacetate (1) and arbortristoside G heptaacetate (2) and four known arborside A tetraacetate (3), arborside C pentaacetate (4), 6,7-di-O-acetyl-6β-hydroxyloganin hexaacetate (5) and nyctanthoside heptaacetate (6) iridoid glycoside acetates. Their structures were elucidated using spectroscopic methods, including 1D and 2D NMR and mass analyses. Compounds 3 and 6 showed significant growth inhibition of U87 cell line (76.41 and 87.62% inhibition) respectively while 2, 4 and 5 showed moderate inhibition. 3 and 6 showed notable urease inhibition (IC50 = 17.2 ± 0.4 and 17.2 ± 0.7 µM) respectively, and IC50 of 2, 4 and 5 were 23.8 - 56.3 µM. Compound 1 was inactive.
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Affiliation(s)
- Talea Sana
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Sumbul Zehra
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Majid Khan
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
- Department of Biochemistry, University of Malakand, Khyber Pakhtunkhwa, Pakistan
| | - Bina Shaheen Siddiqui
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
- Pakistan Academy of Sciences, 3-Constitution Avenue, G-5/2, Islamabad, Pakistan
| | - Shabana Usman Simjee
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Sabira Begum
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Taibi B Hadda
- Laboratoire de Chimie des Matériaux, Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
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Khan S, Hussain R, Khan Y, Iqbal T, Anwar S, Aziz T, Alharbi M. In vitro enzymatic, in silico ADME and molecular docking based analysis for the identification of novel bis-indole containing triazine-thiazole hybrids derivatives as promising urease inhibitors. Z NATURFORSCH C 2024; 0:znc-2024-0061. [PMID: 38635830 DOI: 10.1515/znc-2024-0061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 04/05/2024] [Indexed: 04/20/2024]
Abstract
The current study details a sequence of sequential reactions for synthesizing bis-indole-based triazine bearing thiazole derivatives. Several steps were involved in the synthesis of bis-indole-based triazine bearing thiazole derivative. The synthetic reactions were monitored via thin-layer chromatography (TLC). Synthesized compounds were characterized using various spectroscopic techniques, including 1H NMR, 13C NMR, and HR-EIMS. The inhibitory activity against urease enzyme of these synthesized compounds was compared with that of thiourea, a standard drug (IC50 = 9.30 ± 0.20 µM). A range of inhibitory potencies were observed for the synthesized compounds, ranging from moderate to excellent, as follows (IC50 = 5.10 ± 0.40 µM to 29.80 ± 0.20 µM). Analyzing the structure-activity relationship (SAR) provided insight into the results, showing that different substituents had different effects on aromatic rings. Several compounds displayed outstanding inhibitory properties (among those tested were 1, 2, 4, 5, and 6 with IC50 = 6.30 ± 0.80, 5.10 ± 0.40, 5.90 ± 0.50, 8.20 ± 0.10, 8.90 ± 0.60 µM, respectively). Anti-urease evaluation of all the synthesized derivatives was conducted in which the selected compounds have shown remarkable potency compared with the standard drug thiourea (IC50 = 9.30 ± 0.20 µM). Molecular docking analysis was carried out for investigating the better binding sites and distance of the derivatives. Moreover, the drug-like properties were explored by the ADME attributes of the synthesized analogs.
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Affiliation(s)
- Shoaib Khan
- Department of Chemistry, 469633 Abbottabad University of Science and Technology (AUST) , Abbottabad, 22500, Pakistan
| | - Rafaqat Hussain
- Department of Chemistry, 66934 Hazara University , Mansehra, 21120, Pakistan
| | - Yousaf Khan
- Department of Chemistry, 66715 COMSATS University Islamabad , Campus-45550, Islamabad, Pakistan
| | - Tayyiaba Iqbal
- Department of Chemistry, 469633 Abbottabad University of Science and Technology (AUST) , Abbottabad, 22500, Pakistan
| | - Saeed Anwar
- Department of Chemistry, 66934 Hazara University , Mansehra, 21120, Pakistan
| | - Tariq Aziz
- Department of Agriculture, Laboratory of Animal Health, Food Hygiene and Quality, University of Ioannina, 47132 Arta, Greece
| | - Metab Alharbi
- Department of Pharmacology and Toxicology, 37850 College of Pharmacy, King Saud University , P.O. Box 2455, 11451, Riyadh, Saudi Arabia
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Fitzgerald MJ, Pearson MM, Mobley HLT. Proteus mirabilis UreR coordinates cellular functions required for urease activity. J Bacteriol 2024; 206:e0003124. [PMID: 38534115 PMCID: PMC11025324 DOI: 10.1128/jb.00031-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 03/05/2024] [Indexed: 03/28/2024] Open
Abstract
A hallmark of Proteus mirabilis infection of the urinary tract is the formation of stones. The ability to induce urinary stone formation requires urease, a nickel metalloenzyme that hydrolyzes urea. This reaction produces ammonia as a byproduct, which can serve as a nitrogen source and weak base that raises the local pH. The resulting alkalinity induces the precipitation of ions to form stones. Transcriptional regulator UreR activates expression of urease genes in a urea-dependent manner. Thus, urease genes are highly expressed in the urinary tract where urea is abundant. Production of mature urease also requires the import of nickel into the cytoplasm and its incorporation into the urease apoenzyme. Urease accessory proteins primarily acquire nickel from one of two nickel transporters and facilitate incorporation of nickel to form mature urease. In this study, we performed a comprehensive RNA-seq to define the P. mirabilis urea-induced transcriptome as well as the UreR regulon. We identified UreR as the first defined regulator of nickel transport in P. mirabilis. We also offer evidence for the direct regulation of the Ynt nickel transporter by UreR. Using bioinformatics, we identified UreR-regulated urease loci in 15 Morganellaceae family species across three genera. Additionally, we located two mobilized UreR-regulated urease loci that also encode the ynt transporter, implying that UreR regulation of nickel transport is a conserved regulatory relationship. Our study demonstrates that UreR specifically regulates genes required to produce mature urease, an essential virulence factor for P. mirabilis uropathogenesis. IMPORTANCE Catheter-associated urinary tract infections (CAUTIs) account for over 40% of acute nosocomial infections in the USA and generate $340 million in healthcare costs annually. A major causative agent of CAUTIs is Proteus mirabilis, an understudied Gram-negative pathogen noted for its ability to form urinary stones via the activity of urease. Urease mutants cannot induce stones and are attenuated in a murine UTI model, indicating this enzyme is essential to P. mirabilis pathogenesis. Transcriptional regulation of urease genes by UreR is well established; here, we expand the UreR regulon to include regulation of nickel import, a function required to produce mature urease. Furthermore, we reflect on the role of urea catalysis in P. mirabilis metabolism and provide evidence for its importance.
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Affiliation(s)
- Madison J. Fitzgerald
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Melanie M. Pearson
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Harry L. T. Mobley
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA
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van den Akker WP, van Benthem RATM, Voets IK, van Hest JCM. Dampened Transient Actuation of Hydrogels Autonomously Controlled by pH-Responsive Bicontinuous Nanospheres. ACS Appl Mater Interfaces 2024; 16:19642-19650. [PMID: 38569110 DOI: 10.1021/acsami.4c02643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
The fabrication of a soft actuator with a dampened actuation response is presented. This was achieved via the incorporation into an actuating hydrogel of urease-loaded pH-responsive bicontinuous nanospheres (BCNs), whose membrane was able to regulate the permeability and thus conversion of fuel urea into ammonia. The dampened response of these nanoreactors to the enzymatically induced pH change was translated to a pH-responsive soft actuator. In hydrogels composed of a pH-responsive and nonresponsive layer, the transient pH gradient yielded an asymmetric swelling behavior, which induced a bending response. The transient actuation profile could be controlled by varying the external fuel concentrations. Furthermore, we showed that the spatial organization of the BCNs within the actuator had a great influence on the actuation response. Embedding the urease-loaded nanoreactors within the active, pH-responsive layer resulted in a reduced response due to local substrate conversion in comparison to embedding them within the passive layer of the bilayer hydrogel. Finally, we were able to induce transient actuation in a hydrogel comprising two identical active layers by the immobilization of the BCNs within one specific layer. Upon addition of urea, a local pH gradient was generated, which caused accelerated swelling in the BCN layer and transient bending of the device before the pH gradient was attenuated over time.
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Affiliation(s)
- Wouter P van den Akker
- Department of Chemistry & Chemical Engineering, Institute for Complex Molecular Systems, Bio-Organic Chemistry, Eindhoven University of Technology, Helix, P.O. Box 513, 5600MB Eindhoven, The Netherlands
- Department of Chemistry & Chemical Engineering, Self-Organizing Soft Matter, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven, The Netherlands
| | - Rolf A T M van Benthem
- Department of Chemistry & Chemical Engineering, Laboratory of Physical Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven, The Netherlands
- Shell Energy Transition Center Amsterdam, Grasweg 31, 1031 HW Amsterdam, The Netherlands
| | - Ilja K Voets
- Department of Chemistry & Chemical Engineering, Self-Organizing Soft Matter, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven, The Netherlands
| | - Jan C M van Hest
- Department of Chemistry & Chemical Engineering, Institute for Complex Molecular Systems, Bio-Organic Chemistry, Eindhoven University of Technology, Helix, P.O. Box 513, 5600MB Eindhoven, The Netherlands
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Silva VKA, Min S, Yoo K, Fries BC. Host-Pathogen Interactions and Correlated Factors That Are Affected in Replicative-Aged Cryptococcus neoformans. J Fungi (Basel) 2024; 10:279. [PMID: 38667950 PMCID: PMC11050866 DOI: 10.3390/jof10040279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 03/27/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024] Open
Abstract
Cryptococcus neoformans is a facultative intracellular fungal pathogen. Ten-generation-old (10GEN) C. neoformans cells are more resistant to phagocytosis and killing by macrophages than younger daughter cells. However, mechanisms that mediate this resistance and intracellular parasitism are poorly understood. Here, we identified important factors for the intracellular survival of 10GEN C. neoformans, such as urease activity, capsule synthesis, and DNA content using flow cytometry and fluorescent microscopy techniques. The real-time visualization of time-lapse imaging was applied to determine the phagosomal acidity, membrane permeability, and vomocytosis (non-lytic exocytosis) rate in J774 macrophages that phagocytosed C. neoformans of different generational ages. Our results showed that old C. neoformans exhibited higher urease activity and enhanced Golgi activity. In addition, old C. neoformans were more likely to be arrested in the G2 phase, resulting in the occasional formation of aberrant trimera-like cells. To finish, the advanced generational age of the yeast cells slightly reduced vomocytosis events within host cells, which might be associated with increased phagolysosome pH and membrane permeability. Altogether, our results suggest that old C. neoformans prevail within acidic phagolysosomes and can manipulate the phagosome pH. These strategies may be used by old C. neoformans to resist phagosomal killing and drive cryptococcosis pathogenesis. The comprehension of these essential host-pathogen interactions could further shed light on mechanisms that bring new insights for novel antifungal therapeutic design.
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Affiliation(s)
- Vanessa K. A. Silva
- Division of Infectious Diseases, Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; (V.K.A.S.); (S.M.)
| | - Sungyun Min
- Division of Infectious Diseases, Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; (V.K.A.S.); (S.M.)
| | - Kyungyoon Yoo
- Department of Microbiology and Immunology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY 11794, USA;
| | - Bettina C. Fries
- Division of Infectious Diseases, Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; (V.K.A.S.); (S.M.)
- Department of Microbiology and Immunology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY 11794, USA;
- Veterans Administration Medical Center, Northport, NY 11768, USA
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Subramaniyan Y, Khan A, Mujeeburahiman M, Rekha PD. High Incidence of Antibiotic Resistance in the Uropathogenic Bacteria Associated with Different Urological Diseases and Metabolic Complications: A Single Center Cross-Sectional Study. Microb Drug Resist 2024. [PMID: 38593462 DOI: 10.1089/mdr.2024.0015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024] Open
Abstract
Urological diseases affect all age groups and are associated with different urinary complications. Presence of pathogenic bacteria complicates the urological diseases such as chronic kidney disease (CKD), kidney stone disease (KSD), emphysematous pyelonephritis (EPN), and urological cancers (UCs) coinciding with urinary metabolic complications. The One Health concept for preventing the spread of antibiotic resistant opportunistic pathogens necessitates detailed investigation on the virulence and the antibiotic sensitivity patterns of the pathogens from the urinary tract infections (UTIs). This cross-sectional study was aimed to profile the pathogenic bacteria associated with different urological diseases that included urine samples from the patients from a tertiary care hospital. The study included 258 patients representing CKD (15.1%), KSD (28.7%), EPN (15.5%), UC (12.0%), and UTI patients without any urological diseases (28.7%) with overall 70.5% patients showing positive urine culture. Furthermore, other than UTI in patients without any urological diseases (100%), higher culture positive cases were seen in KSD (64.9%), followed by CKD (61.5%), EPN (52.5%), and UC (48.4%). Escherichia coli was the most predominant bacteria in UTI (35.1%) and EPN (66.7%). In KSD, Pseudomonas aeruginosa (41.7%), Staphylococcus aureus (18.8%), and Proteus mirabilis (14.6%) were more common. S. aureus (86.7%) was the most isolated bacteria from the UC cases. Overall rate of multidrug resistance (MDR) was 77.8%. All (100%) E. coli, K. pneumoniae, P. mirabilis, and S. aureus strains were MDR. Among the strains, strong biofilm formation was observed in 73.6%, and 66.7% strains were urease positive. Biofilm was positively correlated with MDR and urease activity. The abundance and distribution of bacteria differed among the urological diseases suggesting their association with the urine metabolite profile. Colonization of MDR pathogens in patients with urological diseases is a serious concern requiring steps to control the emergence of drug resistance and their further spread into the ecosystem.
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Affiliation(s)
- Yuvarajan Subramaniyan
- Division of Microbiology and Biotechnology, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
| | - Altaf Khan
- Department of Urology, Yenepoya Medical College and Hospital, Yenepoya (Deemed to be University), Mangalore, India
| | - M Mujeeburahiman
- Department of Urology, Yenepoya Medical College and Hospital, Yenepoya (Deemed to be University), Mangalore, India
| | - Punchappady Devasya Rekha
- Division of Microbiology and Biotechnology, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
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Sapre A, Mandal NS, Somasundar A, Bhide A, Song J, Borhan A, Sen A. Enzyme Catalysis Causes Fluid Flow, Motility, and Directional Transport on Supported Lipid Bilayers. ACS Appl Mater Interfaces 2024; 16:9380-9387. [PMID: 38319873 DOI: 10.1021/acsami.3c15383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
The dynamic interplay between the composition of lipid membranes and the behavior of membrane-bound enzymes is critical to the understanding of cellular function and viability, and the design of membrane-based biosensing platforms. While there is a significant body of knowledge about how lipid composition and dynamics affect membrane-bound enzymes, little is known about how enzyme catalysis influences the motility and lateral transport on lipid membranes. Using enzyme-attached lipids in supported bilayers (SLBs), we provide direct evidence of catalysis-induced fluid flow that underlies the observed motility on SLBs. Additionally, by using active enzyme patches, we demonstrate the directional transport of tracer particles on SLBs. As expected, enhancing the membrane viscosity by incorporating cholesterol into the bilayer suppresses the overall movement. These are the first steps in understanding diffusion and transport on lipid membranes due to active, out-of-equilibrium processes that are the hallmark of living systems. In general, our study demonstrates how active enzymes can be used to control diffusion and transport in confined 2-D environments.
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Affiliation(s)
- Aditya Sapre
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Niladri Sekhar Mandal
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Ambika Somasundar
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Ashlesha Bhide
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Jiaqi Song
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Ali Borhan
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Ayusman Sen
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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Valenzuela-Hormazabal P, Sepúlveda RV, Alegría-Arcos M, Valdés-Muñoz E, Rojas-Pérez V, González-Bonet I, Suardíaz R, Galarza C, Morales N, Leddermann V, Castro RI, Benso B, Urra G, Hernández-Rodríguez EW, Bustos D. Unveiling Novel Urease Inhibitors for Helicobacter pylori: A Multi-Methodological Approach from Virtual Screening and ADME to Molecular Dynamics Simulations. Int J Mol Sci 2024; 25:1968. [PMID: 38396647 PMCID: PMC10888695 DOI: 10.3390/ijms25041968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 01/20/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
Helicobacter pylori (Hp) infections pose a global health challenge demanding innovative therapeutic strategies by which to eradicate them. Urease, a key Hp virulence factor hydrolyzes urea, facilitating bacterial survival in the acidic gastric environment. In this study, a multi-methodological approach combining pharmacophore- and structure-based virtual screening, molecular dynamics simulations, and MM-GBSA calculations was employed to identify novel inhibitors for Hp urease (HpU). A refined dataset of 8,271,505 small molecules from the ZINC15 database underwent pharmacokinetic and physicochemical filtering, resulting in 16% of compounds for pharmacophore-based virtual screening. Molecular docking simulations were performed in successive stages, utilizing HTVS, SP, and XP algorithms. Subsequent energetic re-scoring with MM-GBSA identified promising candidates interacting with distinct urease variants. Lys219, a residue critical for urea catalysis at the urease binding site, can manifest in two forms, neutral (LYN) or carbamylated (KCX). Notably, the evaluated molecules demonstrated different interaction and energetic patterns in both protein variants. Further evaluation through ADMET predictions highlighted compounds with favorable pharmacological profiles, leading to the identification of 15 candidates. Molecular dynamics simulations revealed comparable structural stability to the control DJM, with candidates 5, 8 and 12 (CA5, CA8, and CA12, respectively) exhibiting the lowest binding free energies. These inhibitors suggest a chelating capacity that is crucial for urease inhibition. The analysis underscores the potential of CA5, CA8, and CA12 as novel HpU inhibitors. Finally, we compare our candidates with the chemical space of urease inhibitors finding physicochemical similarities with potent agents such as thiourea.
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Affiliation(s)
- Paulina Valenzuela-Hormazabal
- Departamento de Farmacología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción 4030000, Chile;
| | - Romina V. Sepúlveda
- Center for Bioinformatics and Integrative Biology, Facultad de Ciencias de la Vida, Universidad Andres Bello, Av. República 330, Santiago 8370146, Chile;
| | - Melissa Alegría-Arcos
- Núcleo de Investigación en Data Science, Facultad de Ingeniería y Negocios, Universidad de las Américas, Santiago 7500000, Chile;
| | - Elizabeth Valdés-Muñoz
- Doctorado en Biotecnología Traslacional, Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Talca 3480094, Chile; (E.V.-M.); (V.R.-P.)
| | - Víctor Rojas-Pérez
- Doctorado en Biotecnología Traslacional, Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Talca 3480094, Chile; (E.V.-M.); (V.R.-P.)
| | - Ileana González-Bonet
- Biomedical Research Labs, Facultad de Medicina, Universidad Católica del Maule, Talca 3480094, Chile;
| | - Reynier Suardíaz
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain;
| | - Christian Galarza
- Departamento de Matemáticas, Facultad de Ciencias Naturales y Matemáticas, Escuela Superior Politécnica del Litoral, Guayaquil 090112, Ecuador;
| | - Natalia Morales
- Magíster en Ciencias de la Computación, Universidad Católica del Maule, Talca 3460000, Chile; (N.M.); (V.L.)
| | - Verónica Leddermann
- Magíster en Ciencias de la Computación, Universidad Católica del Maule, Talca 3460000, Chile; (N.M.); (V.L.)
| | - Ricardo I. Castro
- Multidisciplinary Agroindustry Research Laboratory, Instituto de Ciencias Aplicadas, Facultad de Arquitectura, Construcción y Medio Ambiente, Universidad Autónoma de Chile, Cinco Pte. N°1670, Talca 3467987, Chile;
| | - Bruna Benso
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 7810000, Chile;
| | - Gabriela Urra
- Laboratorio de Bioinformática y Química Computacional, Departamento de Medicina Traslacional, Facultad de Medicina, Universidad Católica del Maule, Talca 3480094, Chile;
| | - Erix W. Hernández-Rodríguez
- Laboratorio de Bioinformática y Química Computacional, Departamento de Medicina Traslacional, Facultad de Medicina, Universidad Católica del Maule, Talca 3480094, Chile;
- Unidad de Bioinformática Clínica, Centro Oncológico, Facultad de Medicina, Universidad Católica del Maule, Talca 3480094, Chile
| | - Daniel Bustos
- Laboratorio de Bioinformática y Química Computacional, Departamento de Medicina Traslacional, Facultad de Medicina, Universidad Católica del Maule, Talca 3480094, Chile;
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Hou C, Song X, Xiong Z, Wang G, Xia Y, Ai L. Genome-scale reconstruction of the metabolic network in Streptococcus thermophilus S-3 and assess urea metabolism. J Sci Food Agric 2024; 104:1458-1469. [PMID: 37814322 DOI: 10.1002/jsfa.13026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 08/16/2023] [Accepted: 10/01/2023] [Indexed: 10/11/2023]
Abstract
BACKGROUND Streptococcus thermophilus is an important strain widely used in dairy fermentation, with distinct urea metabolism characteristics compared to other lactic acid bacteria. The conversion of urea by S. thermophilus has been shown to affect the flavor and acidification characteristics of milk. Additionally, urea metabolism has been found to significantly increase the number of cells and reduce cell damage under acidic pH conditions, resulting in higher activity. However, the physiological role of urea metabolism in S. thermophilus has not been fully evaluated. A deep understanding of this metabolic feature is of great significance for its production and application. Genome-scale metabolic network models (GEMs) are effective tools for investigating the metabolic network of organisms using computational biology methods. Constructing an organism-specific GEM can assist us in comprehending its characteristic metabolism at a systemic level. RESULTS In the present study, we reconstructed a high-quality GEM of S. thermophilus S-3 (iCH492), which contains 492 genes, 608 metabolites and 642 reactions. Growth phenotyping experiments were employed to validate the model both qualitatively and quantitatively, yielding satisfactory predictive accuracy (95.83%), sensitivity (93.33%) and specificity (100%). Subsequently, a systematic evaluation of urea metabolism in S. thermophilus was performed using iCH492. The results showed that urea metabolism reduces intracellular hydrogen ions and creates membrane potential by producing and transporting ammonium ions. This activation of glycolytic fluxes and ATP synthase produces more ATP for biomass synthesis. The regulation of fluxes of reactions involving NAD(P)H by urea metabolism improves redox balance. CONCLUSION Model iCH492 represents the most comprehensive knowledge-base of S. thermophilus to date, serving as a potent tool. The evaluation of urea metabolism led to novel insights regarding the role of urease. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Chengjie Hou
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Xin Song
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Zhiqiang Xiong
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Guangqiang Wang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Yongjun Xia
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Lianzhong Ai
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
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10
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Khan Y, Maalik A, Rehman W, Alanazi MM, Khan S, Hussain R, Rasheed L, Saboor A, Iqbal S. Synthesis, in vitro bio-evaluation and in silico molecular docking studies of thiadiazole-based Schiff base derivatives. Future Med Chem 2024; 16:335-348. [PMID: 38314616 DOI: 10.4155/fmc-2023-0276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2024] Open
Abstract
Aim: Recently, thiadiazole-containing drugs have gained greater clinical relevance and are being explored for the development of new antidiabetic, antiurease and antimicrobial agents that target drug resistance. Methods & results: The authors disclose the synthesis of N-(5-[4-(trifluoromethyl)phenyl]-1,3,4-thiadiazol-2-yl)methanimine derivatives starting from 4-(trifluoromethyl)benzoic acid. All of the synthesized derivatives were evaluated for their biological potential in order to investigate the inhibitory activity against antidiabetic, antiurease and antibacterial profiles. Compounds 1, 2 and 9 showed excellent inhibitory activities due to the hydrogen bonding presence of -OH, -F and -CF3 substitutions attached with the phenyl ring. Conclusion: The present study provides potent antidiabetic, antiurease and antimicrobial agents that can be further optimized to discover novel antidiabetic, antiurease drugs.
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Affiliation(s)
- Yousaf Khan
- Department of Chemistry, COMSATS University Islamabad, Islamabad, 45550, Pakistan
| | - Aneela Maalik
- Department of Chemistry, COMSATS University Islamabad, Islamabad, 45550, Pakistan
| | - Wajid Rehman
- Department of Chemistry, Hazara University, Mansehra, 21120, Pakistan
| | - Mohammed M Alanazi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Shoaib Khan
- Department of Chemistry, Abbottabad University of Science & Technology (AUST), Abbottabad, Pakistan
| | - Rafaqat Hussain
- Department of Chemistry, Hazara University, Mansehra, 21120, Pakistan
| | - Liaqat Rasheed
- Department of Chemistry, Hazara University, Mansehra, 21120, Pakistan
| | - Abdul Saboor
- Department of Chemistry, Hazara University, Mansehra, 21120, Pakistan
| | - Shahid Iqbal
- School of Chemical & Environmental Engineering, College of Chemistry, Chemical Engineering & Materials Science, Soochow University, Suzhou, Jiangsu, 215123, China
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11
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Wilcox SM, Mulligan CN, Neculita CM. Microbially Induced Calcium Carbonate Precipitation as a Bioremediation Technique for Mining Waste. Toxics 2024; 12:107. [PMID: 38393202 PMCID: PMC10891697 DOI: 10.3390/toxics12020107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/18/2024] [Accepted: 01/24/2024] [Indexed: 02/25/2024]
Abstract
Mining waste represents a global issue due to its potential of generating acidic or alkaline leachate with high concentrations of metals and metalloids (metal(loid)s). Microbial-induced calcium carbonate precipitation (MICP) is an engineering tool used for remediation. MICP, induced via biological activity, aims to precipitate calcium carbonate (CaCO3) or co-precipitate other metal carbonates (MCO3). MICP is a bio-geochemical remediation method that aims to immobilize or remove metal(loid)s via enzyme, redox, or photosynthetic metabolic pathways. Contaminants are removed directly through immobilization as mineral precipitates (CaCO3 or MCO3), or indirectly (via sorption, complexes, or inclusion into the crystal structure). Further, CaCO3 precipitates deposited on the surface or within the pore spaces of a solid matrix create a clogging effect to reduce contaminant leachate. Experimental research on MICP has shown its promise as a bioremediation technique for mining waste. Additional research is required to evaluate the long-term feasibility and potential by-products of MICP-treated/stabilized waste.
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Affiliation(s)
- Samantha M. Wilcox
- Department of Building, Civil and Environmental Engineering, Concordia University, Montréal, QC H3G IM8, Canada
| | - Catherine N. Mulligan
- Department of Building, Civil and Environmental Engineering, Concordia University, Montréal, QC H3G IM8, Canada
| | - Carmen Mihaela Neculita
- Research Institute on Mines and the Environment (RIME), University of Quebec in Abitibi-Témiscamingue, Rouyn-Noranda, QC J9X 5E4, Canada;
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12
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Keshri J, Smith KM, Svendsen MK, Keillor HR, Moss ML, Jordan HJ, Larkin AM, Garrish JK, Line JE, Ball PN, Oakley BB, Seal BS. Phenotypic Characterization and Draft Genome Sequence Analyses of Two Novel Endospore-Forming Sporosarcina spp. Isolated from Canada Goose ( Branta canadensis) Feces. Microorganisms 2023; 12:70. [PMID: 38257897 PMCID: PMC10818898 DOI: 10.3390/microorganisms12010070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 12/15/2023] [Accepted: 12/22/2023] [Indexed: 01/24/2024] Open
Abstract
In an attempt to isolate new probiotic bacteria, two Gram-variable, spore-forming, rod-shaped aerobic bacteria designated as strain A4 and A15 were isolated from the feces of Canada geese (Branta canadensis). Strain A4 was able to grow in high salt levels and exhibited lipase activity, while A15 did not propagate under these conditions. Both were positive for starch hydrolysis, and they inhibited the growth of Staphylococcus aureus. The strains of the 16S rRNA sequence shared only 94% similarity to previously identified Sporosarcina spp. The ANI (78.08%) and AAI (82.35%) between the two strains were less than the species threshold. Searches for the most similar genomes using the Mash/Minhash algorithm showed the nearest genome to strain A4 and A15 as Sporosarcina sp. P13 (distance of 21%) and S. newyorkensis (distance of 17%), respectively. Sporosarcina spp. strains A4 and A15 contain urease genes, and a fibronectin-binding protein gene indicates that these bacteria may bind to eukaryotic cells in host gastrointestinal tracts. Phenotypic and phylogenetic data, along with low dDDH, ANI, and AAI values for strains A4 and A15, indicate these bacteria are two novel isolates of the Sporosarcina genus: Sporosarcina sp. A4 sp. nov., type strain as Sporosarcina cascadiensis and Sporosarcina sp. A15 sp. nov., type strain Sporosarcina obsidiansis.
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Affiliation(s)
- Jitendra Keshri
- College of Veterinary Medicine, Western University of Health Sciences, Pomona, CA 91766, USA;
| | - Kristina M. Smith
- Biology Program, Oregon State University Cascades, Bend, OR 97702, USA; (K.M.S.); (M.K.S.); (H.R.K.); (M.L.M.); (H.J.J.); (A.M.L.); (P.N.B.)
| | - Molly K. Svendsen
- Biology Program, Oregon State University Cascades, Bend, OR 97702, USA; (K.M.S.); (M.K.S.); (H.R.K.); (M.L.M.); (H.J.J.); (A.M.L.); (P.N.B.)
| | - Haley R. Keillor
- Biology Program, Oregon State University Cascades, Bend, OR 97702, USA; (K.M.S.); (M.K.S.); (H.R.K.); (M.L.M.); (H.J.J.); (A.M.L.); (P.N.B.)
| | - Madeline L. Moss
- Biology Program, Oregon State University Cascades, Bend, OR 97702, USA; (K.M.S.); (M.K.S.); (H.R.K.); (M.L.M.); (H.J.J.); (A.M.L.); (P.N.B.)
| | - Haley J. Jordan
- Biology Program, Oregon State University Cascades, Bend, OR 97702, USA; (K.M.S.); (M.K.S.); (H.R.K.); (M.L.M.); (H.J.J.); (A.M.L.); (P.N.B.)
| | - Abigail M. Larkin
- Biology Program, Oregon State University Cascades, Bend, OR 97702, USA; (K.M.S.); (M.K.S.); (H.R.K.); (M.L.M.); (H.J.J.); (A.M.L.); (P.N.B.)
| | - Johnna K. Garrish
- Poultry Microbiological Safety & Processing Research Unit, U.S. National Poultry Research Center, Athens, GA 30605, USA; (J.K.G.); (J.E.L.)
| | - John Eric Line
- Poultry Microbiological Safety & Processing Research Unit, U.S. National Poultry Research Center, Athens, GA 30605, USA; (J.K.G.); (J.E.L.)
| | - Patrick N. Ball
- Biology Program, Oregon State University Cascades, Bend, OR 97702, USA; (K.M.S.); (M.K.S.); (H.R.K.); (M.L.M.); (H.J.J.); (A.M.L.); (P.N.B.)
| | - Brian B. Oakley
- College of Veterinary Medicine, Western University of Health Sciences, Pomona, CA 91766, USA;
| | - Bruce S. Seal
- Biology Program, Oregon State University Cascades, Bend, OR 97702, USA; (K.M.S.); (M.K.S.); (H.R.K.); (M.L.M.); (H.J.J.); (A.M.L.); (P.N.B.)
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13
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Governa P, Romagnoli G, Albanese P, Rossi F, Manetti F, Biagi M. Effect of in vitro simulated digestion on the anti- Helicobacter Pylori activity of different Propolis extracts. J Enzyme Inhib Med Chem 2023; 38:2183810. [PMID: 36916299 PMCID: PMC10026752 DOI: 10.1080/14756366.2023.2183810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023] Open
Abstract
Helicobacter pylori (HP) is among the most common pathogens causing infection in humans worldwide. Oxidative stress and gastric inflammation are involved in the progression of HP-related gastric diseases, and they can be targeted by integrating conventional antibiotic treatment with polyphenol-enriched natural products. In this work, we characterised three different propolis extracts and evaluated their stability under in vitro simulated gastric digestion, compared to their main constituents alone. The extract with the highest stability to digestion (namely, the dark propolis extract, DPE) showed a minimum bactericidal concentration (MBC) lower than 1 mg/mL on HP strains with different virulence factors. Finally, since urease is one of the virulence factors contributing to the establishment of a microenvironment that promotes HP infection, we evaluated the possible inhibition of this enzyme by using molecular docking simulations and in vitro colorimetric assay, showing that galangin and pinocembrin may be involved in this activity.
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Affiliation(s)
- Paolo Governa
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Giulia Romagnoli
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Paola Albanese
- Department of Physical Sciences, Earth and Environment, University of Siena, Siena, Italy
| | - Federico Rossi
- Department of Physical Sciences, Earth and Environment, University of Siena, Siena, Italy
| | - Fabrizio Manetti
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Marco Biagi
- Department of Physical Sciences, Earth and Environment, University of Siena, Siena, Italy
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14
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Khan Y, Khan S, Hussain R, Maalik A, Rehman W, Attwa MW, Masood R, Darwish HW, Ghabbour HA. The Synthesis, In Vitro Bio-Evaluation, and In Silico Molecular Docking Studies of Pyrazoline-Thiazole Hybrid Analogues as Promising Anti-α-Glucosidase and Anti- Urease Agents. Pharmaceuticals (Basel) 2023; 16:1650. [PMID: 38139777 PMCID: PMC10747725 DOI: 10.3390/ph16121650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 11/15/2023] [Accepted: 11/17/2023] [Indexed: 12/24/2023] Open
Abstract
In the present work, a concise library of benzothiazole-derived pyrazoline-based thiazole (1-17) was designed and synthesized by employing a multistep reaction strategy. The newly synthesized compounds were screened for their α-glucosidase and urease inhibitory activities. The scaffolds (1-17) were characterized using a combination of several spectroscopic techniques, including FT-IR, 1H-NMR, 13C-NMR, and EI-MS. The majority of the synthesized compounds demonstrated a notable potency against α-glucosidase and urease enzymes. These analogues disclosed varying degrees of α-glucosidase and urease inhibitory activities, with their IC50 values ranging from 2.50 to 17.50 μM (α-glucosidase) and 14.30 to 41.50 (urease). Compounds 6, 7, 14, and 12, with IC50 values of 2.50, 3.20, 3.40, and 3.50 μM as compared to standard acarbose (IC50 = 5.30 µM), while the same compounds showed 14.30, 19.20, 21.80, and 22.30 comparable with thiourea (IC50 = 31.40 μM), respectively, showed excellent inhibitory activity. The structure-activity relationship revealed that the size and electron-donating or electron-withdrawing effects of substituents influenced the enzymatic activities such as α-glucosidase and urease. Compound 6 was a dual potent inhibitor against α-glucosidase and urease due to the presence of -CF3 electron-withdrawing functionality on the phenyl ring. To the best of our knowledge, these synthetic compounds were found to be the most potent dual inhibitors of α-glucosidase and urease with minimum IC50 values. Moreover, in silico studies on most active compounds, i.e., 6, 7, 14, and 12, were also performed to understand the binding interaction of most active compounds with active sites of α-glucosidase and urease enzymes.
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Affiliation(s)
- Yousaf Khan
- Department of Chemistry, COMSATS University Islamabad Campus, Islamabad 45550, Pakistan; (Y.K.); (R.M.)
| | - Shoaib Khan
- Department of Chemistry, Abbottabad University of Science and Technology (AUST), Abbottabad 22500, Pakistan;
| | - Rafaqat Hussain
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan;
| | - Aneela Maalik
- Department of Chemistry, COMSATS University Islamabad Campus, Islamabad 45550, Pakistan; (Y.K.); (R.M.)
| | - Wajid Rehman
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan;
| | - Mohamed W. Attwa
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (M.W.A.)
| | - Rafia Masood
- Department of Chemistry, COMSATS University Islamabad Campus, Islamabad 45550, Pakistan; (Y.K.); (R.M.)
| | - Hany W. Darwish
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (M.W.A.)
| | - Hazem A. Ghabbour
- School of Health and Biomedical Sciences, RMIT University, Melbourne 3083, Australia;
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15
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Fath MK, Khalili S, Boojar MMA, Hashemi ZS, Zarei M. Clodronic Acid has Strong Inhibitory Interactions with the Urease Enzyme of Helicobacter Pylori: Computer-aided Design and in vitro Confirmation. Curr Comput Aided Drug Des 2023; 20:CAD-EPUB-136071. [PMID: 37957909 DOI: 10.2174/0115734099271837231026064439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 09/11/2023] [Accepted: 09/20/2023] [Indexed: 11/15/2023]
Abstract
BACKGROUND Helicobacter Pylori (HP) infection could lead to various gastrointestinal diseases. Urease is the most important virulence factor of HP. It protects the bacterium against gastric acid. OBJECTIVE Therefore, we aimed to design urease inhibitors as drugs against HP infection. METHODS The DrugBank-approved library was assigned with 3D conformations and the structure of the urease was prepared. Using a re-docking strategy, the proper settings were determined for docking by PyRx and GOLD software. Virtual screening was performed to select the best inhibitory drugs based on binding affinity, FitnessScore, and binding orientation to critical amino acids of the active site. The best inhibitory drug was then evaluated by IC50 and the diameter of the zone of inhibition for bacterial growth. RESULTS The structures of prepared drugs were screened against urease structure using the determined settings. Clodronic acid was determined to be the best-identified drug, due to higher PyRx binding energy, better GOLD FitnessScore, and interaction with critical amino acids of urease. In vitro results were also in line with the computational data. IC50 values of Clodronic acid and Acetohydroxamic Acid (AHA) were 29.78 ± 1.13 and 47.29 ± 2.06 μg/ml, respectively. Diameters of the zones of inhibition were 18 and 15 mm for Clodronic acid and AHA, respectively. CONCLUSION Clodronic acid has better HP urease inhibition potential than AHA. Given its approved status, the development of a repurposed drug based on Clodronic acid would require less time and cost. Further, in vivo studies would unveil the efficacy of Clodronic acid as a urease inhibitor.
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Affiliation(s)
- Mohsen Karami Fath
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Saeed Khalili
- Department of Biology Sciences, Shahid Rajaee Teacher Training University, Tehran, Iran
| | | | - Zahra Sadat Hashemi
- ATMP Department, Breast Cancer Research Center, Motamed Cancer Institute, Academic Center for Education, Culture and Research, Tehran, Iran
| | - Mahboubeh Zarei
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Manoharan A, Farrell J, Aldilla VR, Whiteley G, Kriel E, Glasbey T, Kumar N, Moore KH, Manos J, Das T. N-acetylcysteine prevents catheter occlusion and inflammation in catheter associated-urinary tract infections by suppressing urease activity. Front Cell Infect Microbiol 2023; 13:1216798. [PMID: 37965267 PMCID: PMC10641931 DOI: 10.3389/fcimb.2023.1216798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 09/19/2023] [Indexed: 11/16/2023] Open
Abstract
Introduction Proteus mirabilis is a key pathobiont in catheter-associated urinary tract infections (CA-UTIs), which is well known to form crystalline biofilms that occlude catheters. Urease activity alkylates urine through the release of ammonia, consequentially resulting in higher levels of Mg2+ and Ca2+ and formation of crystals. In this study, we showed that N-acetyl cysteine (NAC), a thiol antioxidant, is a potent urease inhibitor that prevents crystalline biofilm formation. Methods To quantify urease activity, Berthelot's method was done on bacterial extracts treated with NAC. We also used an in vitro catheterised glass bladder model to study the effect of NAC treatment on catheter occlusion and biofilm encrustation in P. mirabilis infections. Inductively-coupled plasma mass spectrometry (ICP-MS) was performed on catheter samples to decipher elemental profiles. Results NAC inhibits urease activity of clinical P. mirabilis isolates at concentrations as low as 1 mM, independent of bacterial killing. The study also showed that NAC is bacteriostatic on P. mirabilis, and inhibited biofilm formation and catheter occlusion in an in vitro. A significant 4-8log10 reduction in viable bacteria was observed in catheters infected in this model. Additionally, biofilms in NAC treated catheters displayed a depletion of calcium, magnesium, or phosphates (>10 fold reduction), thus confirming the absence of any urease activity in the presence of NAC. Interestingly, we also showed that not only is NAC anti-inflammatory in bladder epithelial cells (BECs), but that it mutes its inflammatory response to urease and P. mirabilis infection by reducing the production of IL-6, IL-8 and IL-1b. Discussion Using biochemical, microbiological and immunological techniques, this study displays the functionality of NAC in preventing catheter occlusion by inhibiting urease activity. The study also highlights NAC as a strong anti-inflammatory antibiofilm agent that can target both bacterial and host factors in the treatment of CA-UTIs.
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Affiliation(s)
- Arthika Manoharan
- Infection, Immunity and Inflammation Theme, School of Medical Sciences, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Sydney Institute of Infectious Disease, The University of Sydney, Sydney, NSW, Australia
| | - Jessica Farrell
- Infection, Immunity and Inflammation Theme, School of Medical Sciences, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Whiteley Corporation, Tomago, NSW, Australia
| | - Vina R. Aldilla
- School of Chemistry, The University of New South Wales, Sydney, NSW, Australia
| | - Greg Whiteley
- Infection, Immunity and Inflammation Theme, School of Medical Sciences, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Whiteley Corporation, Tomago, NSW, Australia
- School of Medicine, Western Sydney University, NSW, Australia
| | - Erik Kriel
- Whiteley Corporation, Tomago, NSW, Australia
| | | | - Naresh Kumar
- School of Chemistry, The University of New South Wales, Sydney, NSW, Australia
| | - Kate H. Moore
- Department of Urogynaecology, St George Hospital, University of New South Wales, Sydney, NSW, Australia
| | - Jim Manos
- Infection, Immunity and Inflammation Theme, School of Medical Sciences, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Sydney Institute of Infectious Disease, The University of Sydney, Sydney, NSW, Australia
| | - Theerthankar Das
- Infection, Immunity and Inflammation Theme, School of Medical Sciences, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Sydney Institute of Infectious Disease, The University of Sydney, Sydney, NSW, Australia
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Také A, Uojima H, Sakaguchi Y, Gotoh K, Satoh T, Hidaka H, Horio K, Mizokami M, Hayashi S, Kusano C. Impact of liver fibrosis on the relative abundance of a urease-positive Streptococcus salivarius group from saliva in patients with chronic liver disease. Hepatol Res 2023; 53:998-1007. [PMID: 37279155 DOI: 10.1111/hepr.13930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/18/2023] [Accepted: 05/22/2023] [Indexed: 06/08/2023]
Abstract
AIM We performed genomic analysis to study the relative abundance of a urease-positive Streptococcus salivarius group isolated from the saliva of patients with chronic liver disease. METHODS Male and female patients with chronic liver disease aged over 20 years were included. First, we assessed the frequency and type of the S. salivarius group isolated from oral saliva using molecular biology techniques based on 16S rRNA and dephospho-coenzyme A kinase gene sequencing. Next, we assessed the correlation between the urease positivity rate in the S. salivarius group isolated from oral saliva and liver fibrosis based on chronic liver disease. Urease-positive strains were identified by the urease test using urea broth (Difco, Franklin Lakes, NJ, USA). Liver fibrosis was evaluated by the liver stiffness measurement value based on magnetic resonance elastography. RESULTS A total of 45 patients identified using the multiplex polymerase chain reaction for the 16S rRNA gene were tested using the multiplex polymerase chain reaction for the dephospho-coenzyme A kinase gene. Confirming the strains detected in each of the 45 patients, urease-positive S. salivarius was detected in 28 patients (62%), urease-negative S. salivarius in 25 patients (56%), and urease-positive Streptococcus vestibularis in 12 patients (27%). There was no patient with urease-negative S. vestibularis. The urease-positive rate of the S. salivarius group in the cirrhosis and non-cirrhosis groups were 82.2% and 39.2%, respectively. The liver cirrhosis group had a higher urease positivity rate than the non-cirrhotic group (p < 0.001). CONCLUSIONS Liver fibrosis influences the frequency of a urease-positive S. salivarius group isolated from oral saliva.
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Affiliation(s)
- Akira Také
- Department of Microbiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Haruki Uojima
- Department of Gastroenterology, Internal Medicine, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
- Department of Genome Medical Sciences Project, Research Institute, National Center for Global Health and Medicine, Ichikawa, Chiba, Japan
| | - Yoshihiko Sakaguchi
- Department of Microbiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
- Department of Microbiology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, Japan
| | - Kazuyoshi Gotoh
- Department of Bacteriology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Takashi Satoh
- Division of Hematology, Kitasato University School of Allied Health Sciences, Sagamihara, Kanagawa, Japan
| | - Hisashi Hidaka
- Department of Gastroenterology, Internal Medicine, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Kazue Horio
- Department of Gastroenterology, Internal Medicine, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Masashi Mizokami
- Department of Genome Medical Sciences Project, Research Institute, National Center for Global Health and Medicine, Ichikawa, Chiba, Japan
| | - Shunji Hayashi
- Department of Microbiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Chika Kusano
- Department of Gastroenterology, Internal Medicine, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
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Sepehri S, Khedmati M. An overview of the privileged synthetic heterocycles as urease enzyme inhibitors: Structure-activity relationship. Arch Pharm (Weinheim) 2023; 356:e2300252. [PMID: 37401193 DOI: 10.1002/ardp.202300252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/10/2023] [Accepted: 06/12/2023] [Indexed: 07/05/2023]
Abstract
Urease is a metalloenzyme including two Ni2+ ions, found in some plants, bacteria, fungi, microorganisms, invertebrate animals, and animal tissues. Urease acts as a significant virulence factor, mainly in catheter blockage and infective urolithiasis as well as in the pathogenesis of gastric infection. Therefore, studies on urease lead to novel synthetic inhibitors. In this review, the synthesis and antiurease activities of a collection of privileged synthetic heterocycles such as (thio)barbiturate, (thio)urea, dihydropyrimidine, and triazol derivatives were described and discussed according to structure-activity relationship findings in search of the best moieties and substituents that are answerable for encouraging the desired activity even more potent than the standard. It was found that linking substituted phenyl and benzyl rings to the heterocycles led to potent urease inhibitors.
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Affiliation(s)
- Saghi Sepehri
- Pharmaceutical Sciences Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
- Department of Medicinal Chemistry, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mina Khedmati
- Students Research Committee, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
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19
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Carter MS, Tuttle MJ, Mancini JA, Martineau R, Hung CS, Gupta MK. Microbially Induced Calcium Carbonate Precipitation by Sporosarcina pasteurii: a Case Study in Optimizing Biological CaCO 3 Precipitation. Appl Environ Microbiol 2023; 89:e0179422. [PMID: 37439668 PMCID: PMC10467343 DOI: 10.1128/aem.01794-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023] Open
Abstract
Current production of traditional concrete requires enormous energy investment that accounts for approximately 5 to 8% of the world's annual CO2 production. Biocement is a building material that is already in industrial use and has the potential to rival traditional concrete as a more convenient and more environmentally friendly alternative. Biocement relies on biological structures (enzymes, cells, and/or cellular superstructures) to mineralize and bind particles in aggregate materials (e.g., sand and soil particles). Sporosarcina pasteurii is a workhorse organism for biocementation, but most research to date has focused on S. pasteurii as a building material rather than a biological system. In this review, we synthesize available materials science, microbiology, biochemistry, and cell biology evidence regarding biological CaCO3 precipitation and the role of microbes in microbially induced calcium carbonate precipitation (MICP) with a focus on S. pasteurii. Based on the available information, we provide a model that describes the molecular and cellular processes involved in converting feedstock material (urea and Ca2+) into cement. The model provides a foundational framework that we use to highlight particular targets for researchers as they proceed into optimizing the biology of MICP for biocement production.
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Affiliation(s)
- Michael S. Carter
- Materials and Manufacturing Directorate Air Force Research Lab, Wright-Patterson Air Force Base, Dayton, Ohio, USA
- Biological and Nanoscale Technologies Division, UES, Inc., Dayton, Ohio, USA
| | - Matthew J. Tuttle
- Materials and Manufacturing Directorate Air Force Research Lab, Wright-Patterson Air Force Base, Dayton, Ohio, USA
- Biological and Nanoscale Technologies Division, UES, Inc., Dayton, Ohio, USA
| | - Joshua A. Mancini
- Materials and Manufacturing Directorate Air Force Research Lab, Wright-Patterson Air Force Base, Dayton, Ohio, USA
- Biological and Nanoscale Technologies Division, UES, Inc., Dayton, Ohio, USA
| | - Rhett Martineau
- Materials and Manufacturing Directorate Air Force Research Lab, Wright-Patterson Air Force Base, Dayton, Ohio, USA
- Biological and Nanoscale Technologies Division, UES, Inc., Dayton, Ohio, USA
| | - Chia-Suei Hung
- Materials and Manufacturing Directorate Air Force Research Lab, Wright-Patterson Air Force Base, Dayton, Ohio, USA
| | - Maneesh K. Gupta
- Materials and Manufacturing Directorate Air Force Research Lab, Wright-Patterson Air Force Base, Dayton, Ohio, USA
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Ahmad S, Abdul Qadir M, Ahmed M, Imran M, Yousaf N, Asari A, Hameed A, Muddassar M. Acetylsalicylic acid-sulfa drugs conjugates as potential urease inhibitors and anti-inflammatory agents: bio-oriented drug synthesis, molecular docking, and dynamics simulation studies. J Biomol Struct Dyn 2023:1-15. [PMID: 37643014 DOI: 10.1080/07391102.2023.2252083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 08/18/2023] [Indexed: 08/31/2023]
Abstract
To explore the new mode of action and reduce side effects, making conjugates of existing drugs is becoming an attractive tool in the realm of medicinal chemistry. In this work, we exploited this approach and synthesized new conjugates to assess their activities against the enzymes involved in different pathological conditions. Specifically, we design and synthesized conjugates involving acetylsalicylic acid and sulfa drugs, validating the newly crafted conjugates using techniques like IR, 1HNMR, 13CNMR, and elemental analysis. These conjugates underwent assessment for their ability to inhibit cyclooxygenase-2 (COX-2), urease enzymes, and their anti-inflammatory potential. A competitive mode of urease inhibition was observed for acetylsalicylic acid conjugated with sulfanilamide, sulfacetamide, and sulfadiazine with IC50 of 2.49 ± 0.35 µM, 6.21 ± 0.28 µM, and 6.57 ± 0.44 µM, respectively. Remarkably, the acetylsalicylic acid-sulfamethoxazole conjugate exhibited exceptional anti-inflammatory activity, effectively curtailing induced edema by 83.7%, a result akin to the reference anti-inflammatory drug indomethacin's performance (86.8%). Additionally, it demonstrated comparable COX-2 inhibition (75.8%) to the reference selective COX-2 inhibitor celecoxib that exhibited 77.1% inhibition at 10 µM concentration. To deepen our understanding, we employed molecular docking techniques to predict the binding interactions of competitive inhibitors with COX-2 and urease receptors. Additionally, MD simulations were carried out, confirming the stability of inhibitor-target complexes throughout the simulation period, devoid of significant conformational changes. Collectively, our research underscores the potential of coupling approved medicinal compounds to usher in novel categories of pharmacological agents, holding promise for addressing a wide spectrum of pathological disorders involving COX-2 and urease enzymes.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Saghir Ahmad
- School of Chemistry, University of the Punjab, Lahore, Pakistan
| | | | - Mahmood Ahmed
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan
| | - Muhammad Imran
- KAM School of Life Sciences, FC College (A Chartered University) Lahore, Pakistan
| | - Numan Yousaf
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Asnuzilawati Asari
- Faculty of Science and Marine Environment, University Malaysia Terengganu, Terengganu, Malaysia
| | - Abdul Hameed
- Department of Chemistry, University of Sahiwal, Sahiwal, Pakistan
| | - Muhammad Muddassar
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
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21
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Grond K, Buck CL, Duddleston KN. Microbial gene expression during hibernation in arctic ground squirrels: greater differences across gut sections than in response to pre-hibernation dietary protein content. Front Genet 2023; 14:1210143. [PMID: 37636260 PMCID: PMC10450147 DOI: 10.3389/fgene.2023.1210143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 06/27/2023] [Indexed: 08/29/2023] Open
Abstract
Obligate seasonal hibernators fast for 5-9 months depending on species yet resist muscle atrophy and emerge with little lean mass loss. The role of the gut microbiome in host nitrogen metabolism during hibernation is therefore of considerable interest, and recent studies support a role for urea nitrogen salvage (UNS) in host-protein conservation. We were interested in the effect of pre-hibernation diet on UNS and the microbial provision of essential amino acids (EAAs) during hibernation; therefore, we conducted a study whereby we fed arctic ground squirrels (Urocitellus parryii) pre-hibernation diets containing 9% vs. 18% protein and compared the expression of gut bacterial urease and amino acid (AA) metabolism genes in 4 gut sections (cecum mucosa, cecum lumen, small intestine [SI] mucosa, and SI lumen) during hibernation. We found that pre-hibernation dietary protein content did not affect expression of complete bacterial AA pathway genes during hibernation; however, several individual genes within EAA pathways were differentially expressed in squirrels fed 18% pre-hibernation dietary protein. Expression of genes associated with AA pathways was highest in the SI and lowest in the cecum mucosa. Additionally, the SI was the dominant expression site of AA and urease genes and was distinct from other sections in its overall microbial functional and taxonomic composition. Urease expression in the gut microbiome of hibernating squirrels significantly differed by gut section, but not by pre-hibernation dietary protein content. We identified two individual genes that are part of the urea cycle and involved in arginine biosynthesis, which were significantly more highly expressed in the cecum lumen and SI mucosa of squirrels fed a pre-hibernation diet containing 18% protein. Six bacterial genera were responsible for 99% of urease gene expression: Cupriavidus, Burkholderia, Laribacter, Bradhyrizobium, Helicobacter, and Yersinia. Although we did not find a strong effect of pre-hibernation dietary protein content on urease or AA metabolism gene expression during hibernation, our data do suggest the potential for pre-hibernation diet to modulate gut microbiota function during hibernation, and further investigations are warranted.
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Affiliation(s)
- Kirsten Grond
- Department of Biological Sciences, University of Alaska Anchorage, Anchorage, AK, United States
| | - C. Loren Buck
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, United States
| | - Khrystyne N. Duddleston
- Department of Biological Sciences, University of Alaska Anchorage, Anchorage, AK, United States
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22
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Ahmad S, Abdul Qadir M, Ahmed M, Imran M, Yousaf N, Wani TA, Zargar S, Ali I, Muddassar M. Exploring the potential of propanamide-sulfonamide based drug conjugates as dual inhibitors of urease and cyclooxygenase-2: biological and their in silico studies. Front Chem 2023; 11:1206380. [PMID: 37601915 PMCID: PMC10434765 DOI: 10.3389/fchem.2023.1206380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 07/25/2023] [Indexed: 08/22/2023] Open
Abstract
Derivative synthesis has been a crucial method for altering the effects of already-approved medications, especially to lessen adverse effects and enhance results. Making use of this multi-target approach, a series of naproxen-sulfa drug conjugates was designed and synthesized. The newly designed conjugates were confirmed by spectroscopic techniques like IR, 1HNMR, 13CNMR, and elemental analysis. The conjugates were screened for anti-inflammatory, urease, and cyclooxygenase-2 (COX-2) inhibition. Naproxen conjugated with sulfanilamide, sulfathiazole, and sulfaguanidine was found potent and showed a competitive mode of urease inhibition, with IC50 (µM) values 6.69 ± 0.11, 5.82 ± 0.28, 5.06 ± 0.29, respectively. When compared to other screened conjugates, the naproxen-sulfamethoxazole conjugation showed better anti-inflammatory action by inhibiting induced edema by 82.8%, which is comparable to the medication indomethacin (86.8% inhibition). Whereas it exhibited 75.4% inhibition of COX-2 at 10 µM concentration which is comparable with the reference drug (celecoxib, 77.1% inhibition). Moreover, the binding modes of competitive inhibitors with the urease and COX-2 receptor were predicted through molecular docking studies and their stability analysis through MD simulations showed that these compounds made stable complexes with the respective targets and there were no conformational changes that occurred during simulation. The obtained results showed that the conjugates of approved therapeutic molecules may lead to the development of novel types of pharmacological agents in the treatment of several pathological disorders where urease and COX-2 enzymes are involved.
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Affiliation(s)
- Saghir Ahmad
- School of Chemistry, University of the Punjab, Lahore, Pakistan
- Department of Microbiology, Immunology and Cancer Biology, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | | | - Mahmood Ahmed
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan
| | - Muhammad Imran
- KAM School of Life Sciences, FC College (A Chartered University), Lahore, Pakistan
| | - Numan Yousaf
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Tanveer A. Wani
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Seema Zargar
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ijaz Ali
- Center for Applied Mathematics and Bioinformatics, Gulf University for Science and Technology, Kuwait City, Kuwait
| | - Muhammad Muddassar
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
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23
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Anchidin-Norocel L, Savage WK, Gheorghita R, Amariei S. Biopolymers Used for Receptor Immobilization for Nickel-Detection Biosensors in Food. Micromachines (Basel) 2023; 14:1529. [PMID: 37630065 PMCID: PMC10456834 DOI: 10.3390/mi14081529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/20/2023] [Accepted: 07/28/2023] [Indexed: 08/27/2023]
Abstract
Food is humans' main source of nickel intake, which is responsible for the prevalence of allergic contact dermatitis and other pathological afflictions. While robust, the classical methods for nickel detection-atomic absorption spectrometry and inductively coupled plasma mass spectrometry-are expensive and laborious; in contrast, modern methods that utilize sensors-of which most are electrochemical-have rapid run times, are cost-effective, and are easily assembled. Here, we describe the use of four biopolymers (alginate, agar, chitosan, and carrageenan) for receptor immobilization on biosensors to detect nickel ions and use an optimization approach with three biopolymer concentrations to assay analytical performance profiles. We measured the total performance of screen-printed carbon electrodes immobilized with the biopolymer-sensor combinations using cyclic voltammetry (CV). Voltammetric behavior favored the carrageenan biosensor, based on performance characteristics measured using CV, with sensitivities of 2.68 (for 1% biopolymer concentration) and 2.08 (for 0.5% biopolymer concentration). Our results indicated that among the four biopolymer combinations, carrageenan with urease affixed to screen-printed electrodes was effective at coupling for nickel detection.
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Affiliation(s)
- Liliana Anchidin-Norocel
- Faculty of Medicine and Biological Sciences, Stefan cel Mare University of Suceava, 720229 Suceava, Romania;
| | - Wesley K. Savage
- Faculty of Medicine and Biological Sciences, Stefan cel Mare University of Suceava, 720229 Suceava, Romania;
- Integrated Center for Research, Development and Innovation in Advanced Materials, Nanotechnologies, and Distributed Systems for Fabrication and Control, Stefan cel Mare University of Suceava, 720229 Suceava, Romania
| | - Roxana Gheorghita
- Faculty of Medicine and Biological Sciences, Stefan cel Mare University of Suceava, 720229 Suceava, Romania;
| | - Sonia Amariei
- Faculty of Food Engineering, Stefan cel Mare University of Suceava, 720229 Suceava, Romania
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24
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Zhuravleva OI, Chingizova EA, Oleinikova GK, Starnovskaya SS, Antonov AS, Kirichuk NN, Menshov AS, Popov RS, Kim NY, Berdyshev DV, Chingizov AR, Kuzmich AS, Guzhova IV, Yurchenko AN, Yurchenko EA. Anthraquinone Derivatives and Other Aromatic Compounds from Marine Fungus Asteromyces cruciatus KMM 4696 and Their Effects against Staphylococcus aureus. Mar Drugs 2023; 21:431. [PMID: 37623712 PMCID: PMC10455474 DOI: 10.3390/md21080431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/26/2023] [Accepted: 07/26/2023] [Indexed: 08/26/2023] Open
Abstract
New anthraquinone derivatives acruciquinones A-C (1-3), together with ten known metabolites, were isolated from the obligate marine fungus Asteromyces cruciatus KMM 4696. Acruciquinone C is the first member of anthraquinone derivatives with a 6/6/5 backbone. The structures of isolated compounds were established based on NMR and MS data. The absolute stereoconfigurations of new acruciquinones A-C were determined using ECD and quantum chemical calculations (TDDFT approach). A plausible biosynthetic pathway of the novel acruciquinone C was proposed. Compounds 1-4 and 6-13 showed a significant antimicrobial effects against Staphylococcus aureus growth, and acruciquinone A (1), dendryol B (4), coniothyrinone B (7), and ω-hydroxypachybasin (9) reduced the activity of a key staphylococcal enzyme, sortase A. Moreover, the compounds, excluding 4, inhibited urease activity. We studied the effects of anthraquinones 1, 4, 7, and 9 and coniothyrinone D (6) in an in vitro model of skin infection when HaCaT keratinocytes were cocultivated with S. aureus. Anthraquinones significantly reduce the negative impact of S. aureus on the viability, migration, and proliferation of infected HaCaT keratinocytes, and acruciquinone A (1) revealed the most pronounced effect.
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Affiliation(s)
- Olesya I. Zhuravleva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
- Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
| | - Ekaterina A. Chingizova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Galina K. Oleinikova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Sofya S. Starnovskaya
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Alexandr S. Antonov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Natalia N. Kirichuk
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Alexander S. Menshov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Roman S. Popov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Natalya Yu. Kim
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Dmitrii V. Berdyshev
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Artur R. Chingizov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Alexandra S. Kuzmich
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Irina V. Guzhova
- Institute of Cytology Russian Academy of Sciences, Tikhoretskiy Ave. 4, St. Petersburg 194064, Russia;
| | - Anton N. Yurchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Ekaterina A. Yurchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
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Reyes-Martín MP, Fernández-Ondoño E, Ortiz-Bernad I, Abreu MM. Influence of Intensive and Super-Intensive Olive Grove Management on Soil Quality-Nutrients Content and Enzyme Activities. Plants (Basel) 2023; 12:2779. [PMID: 37570933 PMCID: PMC10421087 DOI: 10.3390/plants12152779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/18/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023]
Abstract
Agricultural soil quality is an issue that has been widely debated in the literature in recent decades. Three olive grove areas (one in Lisbon and the others in Santarém, Portugal) with different management techniques (intensive and super-intensive) were selected. Nutrient concentrations and enzyme activities of soils were determined, as well as the C and N of litter and pruning waste (mulch) to estimate the influence of management techniques on the quality of olive grove soils and to assess the extent to which they are affected by organic covers and different cultivation intensities. Organic C and total N concentrations in soils of the intensive olive grove in Lisbon were the highest when compared with those in the intensive and super-intensive olive groves soils of Santarém. The concentrations of Ca, Mg, Na, and K were the main differences between the Lisbon olive groves and the other two from Santarém. Phosphatase, cellulase, and urease activities were related to the Na, extractable K, extractable P, Zn, Mn, organic C, and total N soil concentrations. Soil management and agricultural practices are determining factors for these enzymatic activities of Santarém olive groves, although climate conditions and soil properties play an important role in the soil enzymatic activities.
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Affiliation(s)
- Marino Pedro Reyes-Martín
- Department of Soil Science and Agricultural Chemistry, Faculty of Science, University of Granada, Av. de Fuentenueva s/n, 18071 Granada, Spain; (E.F.-O.); (I.O.-B.)
| | - Emilia Fernández-Ondoño
- Department of Soil Science and Agricultural Chemistry, Faculty of Science, University of Granada, Av. de Fuentenueva s/n, 18071 Granada, Spain; (E.F.-O.); (I.O.-B.)
| | - Irene Ortiz-Bernad
- Department of Soil Science and Agricultural Chemistry, Faculty of Science, University of Granada, Av. de Fuentenueva s/n, 18071 Granada, Spain; (E.F.-O.); (I.O.-B.)
| | - Maria Manuela Abreu
- LEAF—Linking Landscape, Environment, Agriculture and Food Research Center, Associate Laboratory TERRA, Instituto Superior de Agronomia (ISA), University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal;
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26
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Ahmad S, Abdul Qadir M, Ahmed M, Imran M, Yousaf N, Wani TA, Zargar S, Ali I, Muddassar M. New Acetamide-Sulfonamide-Containing Scaffolds: Anti urease Activity Screening, Structure-Activity Relationship, Kinetics Mechanism, Molecular Docking, and MD Simulation Studies. Molecules 2023; 28:5389. [PMID: 37513261 PMCID: PMC10386649 DOI: 10.3390/molecules28145389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/26/2023] [Accepted: 07/03/2023] [Indexed: 07/30/2023] Open
Abstract
The development of novel scaffolds that can increase the effectiveness, safety, and convenience of medication therapy using drug conjugates is a promising strategy. As a result, drug conjugates are an active area of research and development in medicinal chemistry. This research demonstrates acetamide-sulfonamide scaffold preparation after conjugation of ibuprofen and flurbiprofen with sulfa drugs, and these scaffolds were then screened for urease inhibition. The newly designed conjugates were confirmed by spectroscopic techniques such as IR, 1HNMR, 13CNMR, and elemental analysis. Ibuprofen conjugated with sulfathiazole, flurbiprofen conjugated with sulfadiazine, and sulfamethoxazole were found to be potent and demonstrated a competitive mode of urease inhibition, with IC50 (µM) values of 9.95 ± 0.14, 16.74 ± 0.23, and 13.39 ± 0.11, respectively, and urease inhibition of 90.6, 84.1, and 86.1% respectively. Ibuprofen conjugated with sulfanilamide, sulfamerazine, and sulfacetamide, whereas flurbiprofen conjugated with sulfamerazine, and sulfacetamide exhibited a mixed mode of urease inhibition. Moreover, through molecular docking experiments, the urease receptor-binding mechanisms of competitive inhibitors were anticipated, and stability analysis through MD simulations showed that these compounds made stable complexes with the respective targets and that no conformational changes occurred during the simulation. The findings demonstrate that conjugates of approved therapeutic molecules may result in the development of novel classes of pharmacological agents for the treatment of various pathological conditions involving the urease enzyme.
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Affiliation(s)
- Saghir Ahmad
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan
- Department of Microbiology, Immunology and Cancer Biology, School of Medicine, University of Virginia, Charlottesville, VA 22904, USA
| | | | - Mahmood Ahmed
- Department of Chemistry, Division of Science and Technology, University of Education, College Road, Lahore 54770, Pakistan
| | - Muhammad Imran
- Kauser Abdulla Malik School of Life Sciences, Forman Christian College (A Chartered University), Lahore 54600, Pakistan
| | - Numan Yousaf
- Department of Biosciences, COMSATS University Islamabad, Park Road, Islamabad 45550, Pakistan
| | - Tanveer A Wani
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Seema Zargar
- Department of Biochemistry, College of Science, King Saud University, P.O. Box 222452, Riyadh 11451, Saudi Arabia
| | - Ijaz Ali
- Center for Applied Mathematics and Bioinformatics, Gulf University for Science and Technology, Mubarak Al-Abdullah 32093, Kuwait
| | - Muhammad Muddassar
- Department of Biosciences, COMSATS University Islamabad, Park Road, Islamabad 45550, Pakistan
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27
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Ayaz M, Junaid M, Ullah F, Sadiq A, Shahid M, Ahmad W, Ullah I, Ahmad A, Syed NIH. Corrigendum: GC-MS analysis and gastroprotective evaluations of crude extracts, isolated saponins, and essential oil from polygonum hydropiper L. Front Chem 2023; 11:1229054. [PMID: 37426331 PMCID: PMC10325679 DOI: 10.3389/fchem.2023.1229054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 06/01/2023] [Indexed: 07/11/2023] Open
Abstract
[This corrects the article DOI: 10.3389/fchem.2017.00058.].
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Affiliation(s)
- Muhammad Ayaz
- Department of Pharmacy, University of Malakand, Chakdara dir, Pakistan
| | - Muhammad Junaid
- Department of Pharmacy, University of Malakand, Chakdara dir, Pakistan
| | - Farhat Ullah
- Department of Pharmacy, University of Malakand, Chakdara dir, Pakistan
| | - Abdul Sadiq
- Department of Pharmacy, University of Malakand, Chakdara dir, Pakistan
| | - Muhammad Shahid
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
- Department of Pharmacy, Sarhad University of Information Technology, Peshawar, Pakistan
| | - Waqar Ahmad
- Department of Pharmacy, University of Malakand, Chakdara dir, Pakistan
| | - Ihsan Ullah
- Department of Pharmacy, University of Swabi, Swabi, Pakistan
| | - Ashfaq Ahmad
- Department of Pharmacy, University of Malakand, Chakdara dir, Pakistan
- Department of Pharmacy, Sarhad University of Information Technology, Peshawar, Pakistan
| | - Nawazish-i-Husain Syed
- Department of Pharmacology, University College of Pharmacy, University of Punjab, Lahore, Pakistan
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Aniceto N, Albuquerque TS, Bonifácio VDB, Guedes RC, Martinho N. Using Machine Learning and Molecular Docking to Leverage Urease Inhibition Data for Virtual Screening. Int J Mol Sci 2023; 24:ijms24098180. [PMID: 37175889 PMCID: PMC10179503 DOI: 10.3390/ijms24098180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 04/27/2023] [Accepted: 05/01/2023] [Indexed: 05/15/2023] Open
Abstract
Urease is a metalloenzyme that catalyzes the hydrolysis of urea, and its modulation has an important role in both the agricultural and medical industry. Even though numerous molecules have been tested against ureases of different species, their clinical translation has been limited due to chemical and metabolic stability as well as side effects. Therefore, screening new compounds against urease would be of interest in part due to rising concerns regarding antibiotic resistance. In this work, we collected and curated a diverse set of 2640 publicly available small-molecule inhibitors of jack bean urease and developed a classifier using a random forest machine learning method with high predictive performance. In addition, the physicochemical features of compounds were paired with molecular docking and protein-ligand fingerprint analysis to gather insight into the current activity landscape. We observed that the docking score could not differentiate active from inactive compounds within each chemical family, but scores were correlated with compound activity when all compounds were considered. Additionally, a decision tree model was built based on 2D and 3D Morgan fingerprints to mine patterns of the known active-class compounds. The final machine learning model showed good prediction performance against the test set (81% and 77% precision for active and inactive compounds, respectively). Finally, this model was employed, as a proof-of-concept, on an in-house library to predict new hits that were then tested against urease and found to be active. This is, to date, the largest, most diverse dataset of compounds used to develop predictive in silico models. Overall, the results highlight the usefulness of using machine learning classifiers and molecular docking to predict novel urease inhibitors.
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Affiliation(s)
- Natália Aniceto
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal
- Department of Pharmaceutical Sciences and Medicines, Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal
| | - Tânia S Albuquerque
- iBB-Institute for Bioengineering and Biosciences, and Associate Laboratory i4HB-Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Vasco D B Bonifácio
- iBB-Institute for Bioengineering and Biosciences, and Associate Laboratory i4HB-Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Bioengineering Department, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Rita C Guedes
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal
- Department of Pharmaceutical Sciences and Medicines, Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal
| | - Nuno Martinho
- iBB-Institute for Bioengineering and Biosciences, and Associate Laboratory i4HB-Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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Sıcak Y, Kekeçmuhammed H, Karaküçük-İyidoğan A, Taşkın-Tok T, Oruç-Emre EE, Öztürk M. Chalcones Bearing Nitrogen-Containing Heterocyclics as Multi-Targeted Inhibitors: Design, Synthesis, Biological Evaluation and Molecular Docking Studies. J Mol Recognit 2023:e3020. [PMID: 37092742 DOI: 10.1002/jmr.3020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 04/02/2023] [Accepted: 04/17/2023] [Indexed: 04/25/2023]
Abstract
In this work, a series of chalcones (1a-d, 2a-d, 3a-d, 4a-d and 5a-d) was designed and synthesized by Claisen-Schmidt condensation. Also, their chemical structures were elucidated using UV-Vis, FT IR, 1 H NMR, 13 C NMR, MS spectral data and Elemental analyses. Subsequently, anticholinesterase, tyrosinase, urease inhibitory activities and antioxidant activities of all chalcones were evaluated. The inhibitory potential of all chalcones in terms of IC50 value was observed ranging from 7.18 ± 0.43 to 29.62 ± 0.30 μM against BChE by comparing with Galantamine (IC50 46.06 ± 0.10 μM) as a reference drug. Also compounds 2c, 3c, 4c, 4b and 4d exhibited high anticholinesterase activity against both AChE and BChE enzymes. The tyrosinase inhibitory activity results revealed that three compounds (IC50 1.75 ± 0.83 μM for 2b, IC50 2.24 ± 0.11 μM for 3b and IC50 1.90 ± 0.64 μM for 4b) displayed good inhibitory activity against tyrosinase compared to kojic acid (IC50 0.64 ± 0.12 μM). In addition, other different three chalcones (IC50 22.34 ± 0.25 μM for 2c, IC50 20.98 ± 0.08 μM for 3c and IC50 18.26 ± 0.13 μM for 4c) showed excellent inhibitory activity against the urease by comparing with thiourea (IC50 23.08 ± 0.19 μM). Compounds 3c and 4c showed the best potency in all antioxidant activity tests. In the light of these findings, the structure-activity relationship for compounds was also described. Furthermore, molecular modeling studies including molecular docking, ADMET and pharmacophore analyses of compounds gave important information about the interactions and drug likeness properties. As a result, all chalcones exhibited suitable ADMET findings predicting good oral bioavailability. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yusuf Sıcak
- Muğla Sıtkı Koçman University, Department of Medicinal and Aromatic Plants, Köyceğiz Vocational School, Muğla, Türkiye
| | - Hüseyin Kekeçmuhammed
- Gaziantep University, Department of Chemistry, Faculty of Arts and Sciences, Gaziantep, Türkiye
| | | | - Tuğba Taşkın-Tok
- Gaziantep University, Department of Chemistry, Faculty of Arts and Sciences, Gaziantep, Türkiye
- Gaziantep University, Institute of Health Sciences, Department of Bioinformatics and Computational Biology, Gaziantep, Türkiye
| | - Emine Elçin Oruç-Emre
- Gaziantep University, Department of Chemistry, Faculty of Arts and Sciences, Gaziantep, Türkiye
| | - Mehmet Öztürk
- Muğla Sıtkı Koçman University, Department of Chemistry, Faculty of Sciences, Muğla, Türkiye
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Hina S, Zaib S, Uroos M, Zia-ur-Rehman M, Munir R, Riaz H, Syed Q, Abidi SHI. N-Arylacetamide derivatives of methyl 1,2-benzothiazine-3-carboxylate as potential drug candidates for urease inhibition. R Soc Open Sci 2023; 10:230104. [PMID: 37035287 PMCID: PMC10073911 DOI: 10.1098/rsos.230104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 03/14/2023] [Indexed: 06/19/2023]
Abstract
Urease enzyme is an infectious factor that provokes the growth and colonization of virulence pathogenic bacteria in humans. To overcome the deleterious effects of bacterial infections, inhibition of urease enzyme is one of the promising approaches. The current study is designed to synthesize new 1,2-benzothiazine-N-arylacetamide derivatives 5(a-n) that can effectively provide a new drug candidate to avoid bacterial infections by urease inhibition. After structural elucidation by FT-IR, proton and carbon-13 NMR and mass spectroscopy, the synthesized compounds 5(a-n) were investigated to evaluate their inhibitory potential against urease enzyme. In vitro analysis against positive control of thiourea indicated that all the synthesized compounds have strong inhibitory strengths as compared to the reference drug. Compound 5k, being the most potent inhibitor, strongly inhibited the urease enzymes and revealed an IC50 value of 9.8 ± 0.023 µM when compared with the IC50 of thiourea (22.3 ± 0.031 µM)-a far more robust inhibitory potential. Docking studies of 5k within the urease active site revealed various significant interactions such as H-bond, π-alkyl with amino acid residues like Val744, Lys716, Ala16, Glu7452, Ala37 and Asp730.
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Affiliation(s)
- Sajila Hina
- Centre for Research in Ionic Liquids, School of Chemistry, University of the Punjab, Quaid e Azam Campus, Lahore 54590, Pakistan
- Applied Chemistry Research Centre, PCSIR Laboratories Complex, Lahore 54600, Pakistan
| | - Sumera Zaib
- Department of Basic and Applied Chemistry, Faculty of Science and Technology, University of Central Punjab, Lahore 54590, Pakistan
| | - Maliha Uroos
- Centre for Research in Ionic Liquids, School of Chemistry, University of the Punjab, Quaid e Azam Campus, Lahore 54590, Pakistan
| | | | - Rubina Munir
- Department of Chemistry, Kinnaird College for Women, Lahore 54000, Pakistan
| | - Huma Riaz
- Department of Basic and Applied Chemistry, Faculty of Science and Technology, University of Central Punjab, Lahore 54590, Pakistan
| | - Quratulain Syed
- Applied Chemistry Research Centre, PCSIR Laboratories Complex, Lahore 54600, Pakistan
| | - Syed Hussain Imam Abidi
- Pakistan Council of Scientific and Industrial Research, 01-Constitution Avenue, G-5/2, Islamabad 44050, Pakistan
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Xiong Z, Zhang N, Xu L, Deng Z, Limwachiranon J, Guo Y, Han Y, Yang W, Scharf DH. Urease of Aspergillus fumigatus Is Required for Survival in Macrophages and Virulence. Microbiol Spectr 2023; 11:e0350822. [PMID: 36916906 PMCID: PMC10100864 DOI: 10.1128/spectrum.03508-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 02/09/2023] [Indexed: 03/16/2023] Open
Abstract
The number of patients suffering from fungal diseases has constantly increased during the last decade. Among the fungal pathogens, the airborne filamentous fungus Aspergillus fumigatus can cause chronic and fatal invasive mold infections. So far, only three major classes of drugs (polyenes, azoles, and echinocandins) are available for the treatment of life-threatening fungal infections, and all present pharmacological drawbacks (e.g., low solubility or toxicity). Meanwhile, clinical antifungal-resistant isolates are continuously emerging. Therefore, there is a high demand for novel antifungal drugs, preferentially those that act on new targets. We studied urease and the accessory proteins in A. fumigatus to determine their biochemical roles and their influence on virulence. Urease is crucial for the growth on urea as the sole nitrogen source, and the transcript and protein levels are elevated on urea media. The urease deficient mutant displays attenuated virulence, and its spores are more susceptible to macrophage-mediated killing. We demonstrated that this observation is associated with an inability to prevent the acidification of the phagosome. Furthermore, we could show that a nickel-chelator inhibits growth on urea. The nickel chelator is also able to reverse the effects of urease on macrophage killing and phagosome acidification, thereby reducing virulence in systemic and trachea infection models. IMPORTANCE The development of antifungal drugs is an urgent task, but it has proven to be difficult due to many similarities between fungal and animal cells. Here, we characterized the urease system in A. fumigatus, which depends on nickel for activity. Notably, nickel is not a crucial element for humans. Therefore, we went further to explore the role of nickel-dependent urease in host-pathogen interactions. We were able to show that urease is important in preventing the acidification of the phagosome and therefore reduces the killing of conidia by macrophages. Furthermore, the deletion of urease shows reduced virulence in murine infection models. Taken together, we identified urease as an essential virulence factor of A. fumigatus. We were able to show that the application of the nickel-chelator dimethylglyoxime is effective in both in vitro and in vivo infection models. This suggests that nickel chelators or urease inhibitors are potential candidates for the development of novel antifungal drugs.
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Affiliation(s)
- Zhenzhen Xiong
- Department of Microbiology, School of Basic Medical Sciences, Zhejiang University School of Medicine, Hangzhou, China
| | - Nan Zhang
- Department of Microbiology, School of Basic Medical Sciences, Zhejiang University School of Medicine, Hangzhou, China
| | - Liru Xu
- Department of Microbiology, School of Basic Medical Sciences, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhiduo Deng
- Department of Microbiology, School of Basic Medical Sciences, Zhejiang University School of Medicine, Hangzhou, China
| | - Jarukitt Limwachiranon
- Department of Microbiology, School of Basic Medical Sciences, Zhejiang University School of Medicine, Hangzhou, China
| | - Yaojie Guo
- Department of Microbiology, School of Basic Medical Sciences, Zhejiang University School of Medicine, Hangzhou, China
| | - Yi Han
- Department of Microbiology, School of Basic Medical Sciences, Zhejiang University School of Medicine, Hangzhou, China
| | - Wei Yang
- Department of Biophysics and Department of Neurosurgery, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Daniel H. Scharf
- Department of Microbiology, School of Basic Medical Sciences, Zhejiang University School of Medicine, Hangzhou, China
- The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
- Key Laboratory of Immunity and Inflammatory Diseases of Zhejiang Province, Hangzhou, China
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Martinović A, Chittaro M, Mora D, Arioli S. The Ability of Streptococcus thermophilus BT01 to Modulate Urease Activity in Healthy Subjects' Fecal Samples Depends on the Biomass Production Process. Mol Nutr Food Res 2023; 67:e2200529. [PMID: 36708131 DOI: 10.1002/mnfr.202200529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 01/10/2023] [Indexed: 01/29/2023]
Abstract
SCOPE This study evaluates how manufacturing conditions of probiotic biomass production, using two different cryoprotectants, Cryo-A and Cryo-B, can affect Streptococcus thermophilus BT01 in vivo gastrointestinal tract survival and its ability to modulate the level of urease activity in fecal samples of healthy subjects. METHODS AND RESULTS A randomized controlled cross-over study is carried out on 20 adult healthy subjects to evaluate total and viable loads, persistence of S. thermophilus BT01, and urease activity in fecal samples. Strain-specific quantification by using developed culture-based method and molecular qPCR tool allows to quantify viable S. thermophilus BT01 strain in 90% of the subjects. The quantification of both total DNA and recovered viable S. thermophilus BT01 in fecal samples does not reveal significant differences between Cryo-A or Cryo-B treated biomass. However, the administration of S. thermophilus BT01 produced with Cryo-A results in a decreased urease activity in fecal samples compared to Cryo-B protected cells. CONCLUSION This study i) highlights how the manufacturing conditions can play a role in influencing the probiotic functionality in vivo and ii) represents the first evidence that links S. thermophilus to a specific probiotic mechanism, the reduction of urease activity in fecal samples.
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Affiliation(s)
- Anđela Martinović
- Department of Food, Environmental, and Nutritional Sciences (DeFENS), University of Milan, Milan, 20122, Italy
| | - Marco Chittaro
- Department of Food, Environmental, and Nutritional Sciences (DeFENS), University of Milan, Milan, 20122, Italy
| | - Diego Mora
- Department of Food, Environmental, and Nutritional Sciences (DeFENS), University of Milan, Milan, 20122, Italy
| | - Stefania Arioli
- Department of Food, Environmental, and Nutritional Sciences (DeFENS), University of Milan, Milan, 20122, Italy
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Puca V, Turacchio G, Marinacci B, Supuran CT, Capasso C, Di Giovanni P, D'Agostino I, Carradori S, Grande R. Antimicrobial and Antibiofilm Activities of Carvacrol, Amoxicillin and Salicylhydroxamic Acid Alone and in Combination vs. Helicobacter pylori: Towards a New Multi-Targeted Therapy. Int J Mol Sci 2023; 24. [PMID: 36901886 DOI: 10.3390/ijms24054455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 02/15/2023] [Accepted: 02/16/2023] [Indexed: 02/26/2023] Open
Abstract
The World Health Organization has indicated Helicobacter pylori as a high-priority pathogen whose infections urgently require an update of the antibacterial treatments pipeline. Recently, bacterial ureases and carbonic anhydrases (CAs) were found to represent valuable pharmacological targets to inhibit bacterial growth. Hence, we explored the underexploited possibility of developing a multiple-targeted anti-H. pylori therapy by assessing the antimicrobial and antibiofilm activities of a CA inhibitor, carvacrol (CAR), amoxicillin (AMX) and a urease inhibitor (SHA), alone and in combination. Minimal Inhibitory (MIC) and Minimal Bactericidal (MBC) Concentrations of their different combinations were evaluated by checkerboard assay and three different methods were employed to assess their capability to eradicate H. pylori biofilm. Through Transmission Electron Microscopy (TEM) analysis, the mechanism of action of the three compounds alone and together was determined. Interestingly, most combinations were found to strongly inhibit H. pylori growth, resulting in an additive FIC index for both CAR-AMX and CAR-SHA associations, while an indifferent value was recorded for the AMX-SHA association. Greater antimicrobial and antibiofilm efficacy of the combinations CAR-AMX, SHA-AMX and CAR-SHA against H. pylori were found with respect to the same compounds used alone, thereby representing an innovative and promising strategy to counteract H. pylori infections.
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Allen MG, Bate MY, Tramonte LM, Avalos EY, Loh J, Cover TL, Forsyth MH. Regulation of Helicobacter pylori Urease and Acetone Carboxylase Genes by Nitric Oxide and the CrdRS Two-Component System. Microbiol Spectr 2023; 11:e0463322. [PMID: 36625670 DOI: 10.1128/spectrum.04633-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Helicobacter pylori colonizes the human gastric mucosa and causes various gastroduodenal diseases, including peptic ulceration and gastric cancer. Colonization requires the actions of two-component systems (TCSs) to sense and respond to changes in the host environment. In this study, we evaluated gene regulation mediated by the CrdRS TCS. Few studies have evaluated this TCS, leaving the signal(s) yet to be exhaustively determined and a need for a more complete regulon to be delineated. We performed RNA sequencing (RNA-Seq) on three isogenic H. pylori 26695 mutants: a control, a mutant with deletion of the sensory histidine kinase, ΔcrdS, and a mutant with deletion of the response regulator, ΔcrdR. Comparison of the RNA-Seq results from these mutants established a 40-gene regulon putatively controlled by the CrdRS TCS. Quantitative reverse transcriptase PCR (RT-qPCR) was used to validate 7 of 11 putative regulon members selected for analysis. We further investigated 6 confirmed CrdRS regulon genes by using phospho-incompetent H. pylori 26695 CrdR D53A and CrdS H173A mutants. These experiments further confirmed the role of CrdRS in regulation of urease, acetone carboxylase, hofD, and HP1440. Expression of these CrdRS regulon genes was also evaluated under 10 μM nitric oxide (NO) conditions. This revealed that ureA, acxA, hofD, and HP1440 expression is affected by NO in a CrdRS-dependent manner. Importantly, three of these genes (ureA, acxA, and hofD) are known to play important roles in H. pylori colonization of the stomach. IMPORTANCE The molecular strategies used by Helicobacter pylori to colonize and persist in the harsh environment of the human stomach are a critical area of study. Our study identified several genes in this gastric pathogen, including ureA, a gene encoding a protein essential to the survival of H. pylori, that are regulated via the CrdRS two-component system (TCS) in response to nitric oxide (NO). NO is a product of the innate immune system of the human host. The identification of these genes whose expression is regulated by this molecule may give insights to novel therapeutics. Two genes (ureA and acxA) determined in this study to be regulated by NO via CrdRS have been previously determined to be regulated by other TCSs, indicating that the expression of these genes may be of critical importance to H. pylori.
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Sun Y, Zhong X, Lv J, Wang G, Hu R. Experimental Study on Different Improvement Schemes of EICP-Lignin Solidified Silt. Materials (Basel) 2023; 16:999. [PMID: 36770005 PMCID: PMC9919099 DOI: 10.3390/ma16030999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/10/2023] [Accepted: 01/14/2023] [Indexed: 06/18/2023]
Abstract
In practical engineering applications, silt is prone to liquefaction and quicksand. This paper mainly studies the improvement effects of urease, lignin and their mixture on the strength and liquefaction resistance of silt. Based on the results and phenomena of an unconfined compressive strength and dynamic triaxial test, the improvement effects of the compressive strength, deformation resistance and liquefaction resistance of silt under different improvement schemes are analyzed, and the optimal values of the cement or lignin when enzyme-induced calcium carbonate precipitation (EICP) technology, lignin alone or EICP and lignin are obtained. The results show that the optimum concentration of the constant temperature and humidity sample (referred to as the constant humidity sample) and the constant temperature immersion sample (referred to as the soaking sample) of urease in the unconfined compressive strength test is 1.0 mol/L, and the compressive strength of the soaking sample is 4.9 MPa, which is 1.56 times that of the constant humidity sample; the optimum addition ratio of the lignin-improved constant humidity sample is 3%, and its compressive strength is 2.07 Mpa; the optimum addition ratio of the samples immersed at constant temperature is 4%, and the compressive strength is 3.05 MPa; when urease combines with lignin to improve silt, 4% is the best lignin addition ratio, the compressive strength of the constant humidity sample reaches 1.57 Mpa and the compressive strength of the soaking sample reaches 3.75 MPa; in the dynamic triaxial multi-stage cyclic load test, all samples were cured at constant humidity sample, and in the urease modified silt scheme, 1.0 mol/L was the optimal cement concentration; in the scheme of improving silt with lignin, 3% is the optimal addition ratio; when 1.25 mol/L cementation solution plus urease crude extract is combined with different ratios of lignin in the experimental scheme, 3% is the best lignin addition ratio.
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Affiliation(s)
- Yongshuai Sun
- College of Water Resources & Civil Engineering, China Agricultural University, Beijing 100083, China
| | - Xinyan Zhong
- School of Engineering and Technology, China University of Geosciences, Beijing 100083, China
| | - Jianguo Lv
- School of Engineering and Technology, China University of Geosciences, Beijing 100083, China
| | - Guihe Wang
- School of Engineering and Technology, China University of Geosciences, Beijing 100083, China
| | - Ruilin Hu
- Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
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Patamia V, Floresta G, Zagni C, Pistarà V, Punzo F, Rescifina A. 1,2-Dibenzoylhydrazine as a Multi-Inhibitor Compound: A Morphological and Docking Study. Int J Mol Sci 2023; 24. [PMID: 36674938 DOI: 10.3390/ijms24021425] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 12/24/2022] [Accepted: 01/07/2023] [Indexed: 01/12/2023] Open
Abstract
In the framework of the multitarget inhibitor study, we report an in silico analysis of 1,2-dibenzoylhydrazine (DBH) with respect to three essential receptors such as the ecdysone receptor (EcR), urease, and HIV-integrase. Starting from a crystallographic structural study of accidentally harvested crystals of this compound, we performed docking studies to evaluate the inhibitory capacity of DBH toward three selected targets. A crystal morphology prediction was then performed. The results of our molecular modeling calculations indicate that DBH is an excellent candidate as a ligand to inhibit the activity of EcR receptors and urease. Docking studies also revealed the activity of DBH on the HIV integrase receptor, providing an excellent starting point for developing novel inhibitors using this molecule as a starting lead compound.
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Andriani GM, Spoladori LFDA, Fabris M, Camargo PG, Pereira PML, Santos JP, Bartolomeu-Gonçalves G, Alonso L, Lancheros CAC, Alonso A, Nakamura CV, Macedo F, Pinge-Filho P, Yamauchi LM, Bispo MDLF, Tavares ER, Yamada-Ogatta SF. Synergistic antifungal interaction of N-(butylcarbamothioyl) benzamide and amphotericin B against Cryptococcus neoformans. Front Microbiol 2023; 14:1040671. [PMID: 36960287 PMCID: PMC10028264 DOI: 10.3389/fmicb.2023.1040671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 02/20/2023] [Indexed: 03/09/2023] Open
Abstract
Introduction Cryptococcus neoformans is one of the leading causes of invasive fungal infections worldwide. Cryptococcal meningoencephalitis is the main challenge of antifungal therapy due to high morbidity and mortality rates, especially in low- and middle-income countries. This can be partly attributed to the lack of specific diagnosis difficulty accessing treatment, antifungal resistance and antifungal toxicity. Methods In the present study, the effect of the synthetic thiourea derivative N-(butylcarbamothioyl) benzamide (BTU-01), alone and combined with amphotericin B (AmB), was evaluated in planktonic and sessile (biofilm) cells of C. neoformans. Results BTU-01 alone exhibited a fungistatic activity with minimal inhibitory concentrations (MICs) ranging from 31.25 to 62.5 μg/mL for planktonic cells; and sessile MICs ranging from 125.0 to 1000.0 μg/mL. BTU-01 caused a concentration-dependent inhibitory activity on cryptococcal urease and did not interfere with plasma membrane fluidity. Molecular docking was performed on Canavalia ensiformis urease, and BTU-01 showed relevant interactions with the enzyme. The combination of BTU-01 and AmB exhibited synergistic fungicidal activity against planktonic and sessile cells of C. neoformans. Microscopic analysis of C. neoformans treated with BTU-01, alone or combined with AmB, revealed a reduction in cell and capsule sizes, changes in the morphology of planktonic cells; a significant decrease in the number of cells within the biofilm; and absence of exopolymeric matrix surrounding the sessile cells. Neither hemolytic activity nor cytotoxicity to mammalian cells was detected for BTU-01, alone or combined with AmB, at concentrations that exhibited antifungal activity. BTU-01 also displayed drug-likeness properties. Conclusion These results indicate the potential of BTU-01, for the development of new strategies for controlling C. neoformans infections.
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Affiliation(s)
- Gabriella Maria Andriani
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Lais Fernanda de Almeida Spoladori
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Marciéli Fabris
- Laboratório de Síntese de Moléculas Medicinais, Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Priscila Goes Camargo
- Laboratório de Síntese de Moléculas Medicinais, Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Patrícia Morais Lopes Pereira
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Jussevania Pereira Santos
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Guilherme Bartolomeu-Gonçalves
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Departamento de Patología, Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Lais Alonso
- Instituto de Física, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Cesar Armando Contreras Lancheros
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Departamento de Ciências Básicas da Saúde, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Antonio Alonso
- Instituto de Física, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Celso Vataru Nakamura
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Departamento de Ciências Básicas da Saúde, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Fernando Macedo
- Laboratório de Síntese de Moléculas Medicinais, Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Phileno Pinge-Filho
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Imunopatologia Experimental, Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Lucy Megumi Yamauchi
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Marcelle de Lima Ferreira Bispo
- Laboratório de Síntese de Moléculas Medicinais, Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Eliandro Reis Tavares
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Departamento de Patología, Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- *Correspondence: Sueli Fumie Yamada-Ogatta,
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Xu K, Wang Y, Jian Y, Chen T, Liu Q, Wang H, Li M, He L. Staphylococcus aureus ST1 promotes persistent urinary tract infection by highly expressing the urease. Front Microbiol 2023; 14:1101754. [PMID: 36910215 PMCID: PMC9992547 DOI: 10.3389/fmicb.2023.1101754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/30/2023] [Indexed: 02/24/2023] Open
Abstract
Staphylococcus aureus (SA) is a relatively uncommon cause of urinary tract infections (UTIs) in the general population. Although rare, S. aureus-induced UTIs are prone to potentially life-threatening invasive infections such as bacteremia. To investigate the molecular epidemiology, phenotypic characteristics, and pathophysiology of S. aureus-induced UTIs, we analyzed non-repetitive 4,405 S. aureus isolates collected from various clinical sources from 2008 to 2020 from a general hospital in Shanghai, China. Among these, 193 isolates (4.38%) were cultivated from the midstream urine specimens. Epidemiological analysis showed UTI-derived ST1 (UTI-ST1) and UTI-ST5 are the primary sequence types of UTI-SA. Furthermore, we randomly selected 10 isolates from each of the UTI-ST1, non-UTI-ST1 (nUTI-ST1), and UTI-ST5 groups to characterize their in vitro and in vivo phenotypes. The in vitro phenotypic assays revealed that UTI-ST1 exhibits an obvious decline in hemolysis of human red blood cells and increased biofilm and adhesion in the urea-supplemented medium, compared to the medium without urea, while UTI-ST5 and nUTI-ST1 did not show significant differences between the biofilm-forming and adhesion abilities. In addition, the UTI-ST1 displayed intense urease activities by highly expressing urease genes, indicating the potential role of urease in UTI-ST1 survival and persistence. Furthermore, in vitro virulence assays using the UTI-ST1 ureC mutant showed no significant difference in the hemolytic and biofilm-forming phenotypes in the presence or absence of urea in the tryptic soy broth (TSB) medium. The in vivo UTI model also showed that the CFU of the UTI-ST1 ureC mutant rapidly reduced during UTI pathogenesis 72 h post-infection, while UTI-ST1 and UTI-ST5 persisted in the urine of the infected mice. Furthermore, the phenotypes and the urease expression of UTI-ST1 were found to be potentially regulated by the Agr system with the change in environmental pH. In summary, our results provide important insights into the role of urease in S. aureus-induced UTI pathogenesis in promoting bacterial persistence in the nutrient-limiting urinary microenvironment.
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Affiliation(s)
- Kai Xu
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanan Wang
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Jian
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tianchi Chen
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qian Liu
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hua Wang
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Min Li
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Faculty of Medical Laboratory Science, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lei He
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Halinski A, Bhatti KH, Boeri L, Cloutier J, Davidoff K, Elqady A, Fryad G, Gadelmoula M, Hui H, Petkova K, Popov E, Rawa B, Saltirov I, Spivacow FR, Hameed BMZ, Arkusz K, Trinchieri A, Buchholz N. Spectrum of Bacterial Pathogens from Urinary Infections Associated with Struvite and Metabolic Stones. Diagnostics (Basel) 2022; 13. [PMID: 36611372 DOI: 10.3390/diagnostics13010080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 12/06/2022] [Accepted: 12/12/2022] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVE The purposes of this multi-center study were to evaluate the rate of infection stones and to evaluate the urine cultures of patients with infection stones. MATERIALS Charts of adulpatients with urinary stones were reviewed and data on stone analyses and urine cultures were collected. RESULTS In total, 1204 renal stone formers (RSFs) from 10 countries were included (776 males, 428 females). Fifty-six patients (4.6%) had struvite stones. The highest frequency of struvite stones was observed in India (23%) and Pakistan (18%). Lower rates were reported in Canada (2%), China (3%), Argentina (3%), Iraq (3%), Italy (3.5%) and Poland (3%), and intermediate rates in Egypt (5.5%) and Bulgaria (5.4%). Urine cultures were retrieved from 508 patients. Patients with struvite stones had a positive culture in 64.3% of the samples and patients with other stones, in 26.7%. In struvite stones, the most common isolates were Escherichia coli (27.7%) and Proteus spp. (27.7%), followed by Klebsiella spp. (16.7%); in other types of stone, it was Escherichia coli (47.6%), followed by Gram-positive bacteria (14.0%) Conclusions: The struvite stone composition was associated with a urinary infection, although an infection was not demonstrable with a conventional midstream urine culture in about 30%.
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Abstract
Hydroquinones are a class of organic compounds abundant in nature that result from the full reduction of the corresponding quinones. Quinones are known to efficiently inhibit urease, a NiII -containing enzyme that catalyzes the hydrolysis of urea to yield ammonia and carbonate and acts as a virulence factor of several human pathogens, in addition to decreasing the efficiency of soil organic nitrogen fertilization. Here, we report the molecular characterization of the inhibition of urease from Sporosarcina pasteurii (SPU) and Canavalia ensiformis (jack bean, JBU) by 1,4-hydroquinone (HQ) and its methyl and tert-butyl derivatives. The 1.63-Å resolution X-ray crystal structure of the SPU-HQ complex discloses that HQ covalently binds to the thiol group of αCys322, a key residue located on a mobile protein flap directly involved in the catalytic mechanism. Inhibition kinetic data obtained for the three compounds on JBU reveals the occurrence of an irreversible inactivation process that involves a radical-based autocatalytic mechanism.
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Affiliation(s)
- Luca Mazzei
- Laboratory of Bioinorganic Chemistry Department of Pharmacy and Biotechnology (FaBiT)University of BolognaViale Giuseppe Fanin 4040127BolognaItaly
| | - Michele Cianci
- Department of Agricultural, Food and Environmental SciencesPolytechnic University of MarcheVia Brecce Bianche 1060131AnconaItaly
| | - Stefano Ciurli
- Laboratory of Bioinorganic Chemistry Department of Pharmacy and Biotechnology (FaBiT)University of BolognaViale Giuseppe Fanin 4040127BolognaItaly
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Chang Y, Park TE, Lee SW, Lee EH. Colorimetric Detection of Urease-Producing Microbes Using an Ammonia-Responsive Flexible Film Sensor. Biosensors (Basel) 2022; 12:886. [PMID: 36291023 PMCID: PMC9599750 DOI: 10.3390/bios12100886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/08/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Urease-producing (ureolytic) microbes have given rise to environmental and public health concerns because they are thought to contribute to emissions of ammonia and to be a virulence factor for infections. Therefore, it is highly important to have the ability to detect such microbes. In this study, a poly(dimethylsiloxane) (PDMS)-based colorimetric film sensor was employed for the detection of urease-producing microbes. The sensor was able to detect the enzyme activity of commercially available urease, as the color and absorbance spectrum of the sensor was observed to change upon being exposed to the reaction catalyzed by urease. The ratio of the absorbance of the sensor at 640 nm to that at 460 nm (A640/A460) was linearly proportional to the amount of urease present. The performance of the sensor was validated by the results of a sensitivity and selectivity analysis towards thirteen different bacterial strains. Based on the development of blue color of the sensor, the tested bacteria were classified as strongly positive, moderately positive, weakly positive, or negative urease producers. The response of the sensor to ureolytic bacteria was verified using the urease inhibitor phenyl phosphorodiamidate (PPDA). Additionally, the sensor achieved the selective detection of ureolytic bacteria even in the presence of non-ureolytic bacteria. In addition, a used sensor could be reverted to its original state by being subjected to simple aeration, and in this way the same sensor could be used at least five times for the detection of bacterial urease activity.
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Affiliation(s)
- Yunsoo Chang
- Department of Microbiology, Pusan National University, Busan 46241, Korea
| | - Tae-Eon Park
- Center for Spintronics, Korea Institute of Science and Technology, Seoul 02792, Korea
| | - Seung-Woo Lee
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 01811, Korea
- Center for Functional Biomaterials, Seoul National University of Science and Technology, Seoul 01811, Korea
| | - Eun-Hee Lee
- Department of Microbiology, Pusan National University, Busan 46241, Korea
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Mumtaz S, Iqbal S, Shah M, Hussain R, Rahim F, Rehman W, Khan S, Abid OUR, Rasheed L, Dera AA, Al-ghulikah HA, Kehili S, Elkaeed EB, Alrbyawi H, Alahmdi MI. New Triazinoindole Bearing Benzimidazole/Benzoxazole Hybrids Analogs as Potent Inhibitors of Urease: Synthesis, In Vitro Analysis and Molecular Docking Studies. Molecules 2022; 27:molecules27196580. [PMID: 36235116 PMCID: PMC9571547 DOI: 10.3390/molecules27196580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 09/27/2022] [Accepted: 09/29/2022] [Indexed: 11/17/2022] Open
Abstract
Twenty-four analogs based on triazinoindole bearing benzimidazole/benzoxazole moieties (1-25) were synthesized. Utilizing a variety of spectroscopic methods, including 1H-, 13C-NMR, and HREI-MS, the newly afforded compounds (1-25) were analyzed. The synthesized analogs were tested against urease enzyme (in vitro) as compared to the standard thiourea drug. All triazinoindole-based benzimidazole/benzoxazole analogs (1-25) exhibited moderate to excellent inhibition profiles, having IC50 values of 0.20 ± 0.01 to 36.20 ± 0.70 μM when evaluated under the positive control of thiourea as a standard drug. To better understand the structure-activity relationship, the synthesized compounds were split into two groups, "A" and "B." Among category "A" analogs, analogs 8 (bearing tri-hydroxy substitutions at the 2,4,6-position of aryl ring C) and 5 (bearing di-hydroxy substitutions at the 3,4-position of aryl ring C) emerged as the most potent inhibitors of urease enzyme and displayed many times more potency than a standard thiourea drug. Besides that, analog 22 (which holds di-hydroxy substitutions at the 2,3-position of the aryl ring) and analog 23 (bearing ortho-fluoro substitution) showed ten-fold-enhanced inhibitory potential compared to standard thiourea among category "B" analogs. Molecular docking studies on the active analogs of each category were performed; the results obtained revealed that the presence of hydroxy and fluoro-substitutions on different positions of aryl ring C play a pivotal role in binding interactions with the active site of the targeted urease enzyme.
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Affiliation(s)
- Sundas Mumtaz
- Department of Chemistry, Hazara University, Mansehra 21300, Pakistan
| | - Shahid Iqbal
- Department of Chemistry, School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), H-12, Islamabad 46000, Pakistan
- Correspondence: (S.I.); (F.R.); (O.-u.-R.A.)
| | - Mazloom Shah
- Department of Chemistry, Abbottabad University of Science and Technology (AUST), Abbottabad 22010, Pakistan
| | - Rafaqat Hussain
- Department of Chemistry, Hazara University, Mansehra 21300, Pakistan
| | - Fazal Rahim
- Department of Chemistry, Hazara University, Mansehra 21300, Pakistan
- Correspondence: (S.I.); (F.R.); (O.-u.-R.A.)
| | - Wajid Rehman
- Department of Chemistry, Hazara University, Mansehra 21300, Pakistan
| | - Shoaib Khan
- Department of Chemistry, Hazara University, Mansehra 21300, Pakistan
| | - Obaid-ur-Rahman Abid
- Department of Chemistry, Hazara University, Mansehra 21300, Pakistan
- Correspondence: (S.I.); (F.R.); (O.-u.-R.A.)
| | - Liaqat Rasheed
- Department of Chemistry, Hazara University, Mansehra 21300, Pakistan
| | - Ayed A. Dera
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61413, Saudi Arabia
| | - Hanan A. Al-ghulikah
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Sana Kehili
- Adham University College, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Eslam B. Elkaeed
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo 11884, Egypt
- Department of Pharmaceutical Sciences, College of Pharmacy, AlMaarefa University, Riyadh 13713, Saudi Arabia
| | - Hamad Alrbyawi
- Pharmaceutics and Pharmaceutical Technology Department, College of Pharmacy, Taibah University, Medina 42353, Saudi Arabia
| | - Mohammed Issa Alahmdi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
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Lambré C, Barat Baviera JM, Bolognesi C, Cocconcelli PS, Crebelli R, Gott DM, Grob K, Lampi E, Mengelers M, Mortensen A, Rivière G, Steffensen I, Tlustos C, Van Loveren H, Vernis L, Zorn H, Glandorf B, Herman L, Aguilera J, Andryszkiewicz M, Liu Y, di Piazza G, Chesson A. Safety evaluation of the food enzyme urease from the non-genetically modified Limosilactobacillus reuteri strain 48/72. EFSA J 2022; 20:e07576. [PMID: 36212675 PMCID: PMC9527648 DOI: 10.2903/j.efsa.2022.7576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The food enzyme urease (urea amidohydrolase EC 3.5.1.5) is produced with the non‐genetically modified Limosilactobacillus reuteri strain 48/72 by Nagase (Europa) GmbH. The food enzyme is intended to be used in brewing processes for the production of Japanese sake. Dietary exposure to the food enzyme–total organic solids (TOS) was estimated to be up to 0.009 mg TOS/kg body weight per day in European populations. The production strain of the food enzyme fulfils the requirements for the Qualified Presumption of Safety approach to safety assessment. As no other concerns arising from the manufacturing process have been identified, the Panel considered that toxicological tests were not needed for the assessment of this food enzyme. A search for similarity of the amino acid sequence of the food enzyme to known allergens was made and no match was found. The Panel notes that the food enzyme contains a known allergen. Therefore, allergenicity cannot be excluded. Based on the data provided, the Panel concludes that this food enzyme does not give rise to safety concerns under the intended conditions of use, except for individuals sensitised to the identified allergen.
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Grossman AB, Vermerris W, Rice KC. Dysregulation of Cell Envelope Homeostasis in Staphylococcus aureus Exposed to Solvated Lignin. Appl Environ Microbiol 2022; 88:e0054822. [PMID: 35852361 DOI: 10.1128/aem.00548-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Lignin is an aromatic plant cell wall polymer that facilitates water transport through the vasculature of plants and is generated in large quantities as an inexpensive by-product of pulp and paper manufacturing and biorefineries. Although lignin's ability to reduce bacterial growth has been reported previously, its hydrophobicity complicates the ability to examine its biological effects on living cells in aqueous growth media. We recently described the ability to solvate lignin in Good's buffers with neutral pH, a breakthrough that allowed examination of lignin's antimicrobial effects against the human pathogen Staphylococcus aureus. These analyses showed that lignin damages the S. aureus cell membrane, causes increased cell clustering, and inhibits growth synergistically with tunicamycin, a teichoic acid synthesis inhibitor. In the present study, we examined the physiological and transcriptomic responses of S. aureus to lignin. Intriguingly, lignin restored the susceptibility of genetically resistant S. aureus isolates to penicillin and oxacillin, decreased intracellular pH, impaired normal cell division, and rendered cells more resistant to detergent-induced lysis. Additionally, transcriptome sequencing (RNA-Seq) differential expression (DE) analysis of lignin-treated cultures revealed significant gene expression changes (P < 0.05 with 5% false discovery rate [FDR]) related to the cell envelope, cell wall physiology, fatty acid metabolism, and stress resistance. Moreover, a pattern of concurrent up- and downregulation of genes within biochemical pathways involved in transmembrane transport and cell wall physiology was observed, which likely reflects an attempt to tolerate or compensate for lignin-induced damage. Together, these results represent the first comprehensive analysis of lignin's antibacterial activity against S. aureus. IMPORTANCE S. aureus is a leading cause of skin and soft tissue infections. The ability of S. aureus to acquire genetic resistance to antibiotics further compounds its ability to cause life-threatening infections. While the historical response to antibiotic resistance has been to develop new antibiotics, bacterial pathogens are notorious for rapidly acquiring genetic resistance mechanisms. As such, the development of adjuvants represents a viable way of extending the life span of current antibiotics to which pathogens may already be resistant. Here, we describe the phenotypic and transcriptomic response of S. aureus to treatment with lignin. Our results demonstrate that lignin extracted from sugarcane and sorghum bagasse restores S. aureus susceptibility to β-lactams, providing a premise for repurposing these antibiotics in treatment of resistant S. aureus strains, possibly in the form of topical lignin/β-lactam formulations.
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Arioli S, Della Scala G, Martinović A, Scaglioni L, Mazzini S, Volonté F, Pedersen MB, Mora D. In Streptococcus thermophilus, Ammonia from Urea Hydrolysis Paradoxically Boosts Acidification and Reveals a New Regulatory Mechanism of Glycolysis. Microbiol Spectr 2022; 10:e0276021. [PMID: 35467410 DOI: 10.1128/spectrum.02760-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Streptococcus thermophilus is widely used in the dairy industry for the manufacturing of fermented milk and cheeses and probiotic formulations. S. thermophilus evolved from closely phylogenetically related pathogenic streptococci through loss-of-function events counterbalanced by the acquisition of relevant traits, such as lactose and urea utilization for the adaptation to the milk environment. In the context of regressive evolution, the urease gene cluster accounts for 0.9% of the total coding sequence belonging to known functional categories. The fate of ammonia and carbon dioxide derived by urea hydrolysis in several biosynthetic pathways have been depicted, and the positive effect of urease activity on S. thermophilus growth fitness and lactic acid fermentation in milk has been already addressed by several authors. However, the mechanistic effect of urea hydrolysis on the energetic metabolisms of S. thermophilus is still unclear. This study aimed to assess the effect of urease activity on the growth and energy metabolism of Streptococcus thermophilus in milk. In milk, 13C-urea was completely hydrolyzed in the first 150 min of S. thermophilus growth, and urea hydrolysis was accompanied by an increase in cell density and a reduction in the generation time. By using energetically discharged cells with gene transcription and translation blocked, we showed that in the presence of fermentable carbon sources, urease activity, specifically the production of ammonia, could dramatically boost glycolysis and, in cascade, homolactic fermentation. Furthermore, we showed that ammonia, specifically ammonium ions, were potent effectors of phosphofructokinase, a key glycolytic enzyme. IMPORTANCE Finding that ammonia-generating enzymes, such as urease, and exogenous ammonia act on phosphofructokinase activity shed new light on the regulatory mechanisms that govern glycolysis. Phosphofructokinase is the key enzyme known to exert a regulatory role on glycolytic flux and, therefore, ammonia as an effector of phosphofructokinase acts, in cascade, modulating the glycolytic pathway. Apart from S. thermophilus, due to the high conservation of glycolytic enzymes in all branches of the tree of life and being aware of the role of ammonia as an effector of phosphofructokinase, we propose to reevaluate the physiological role of the ammonia production pathways in all organisms whose energy metabolism is supported by glycolysis.
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Jeong SM, Kim HH, Ryu SH, Kang WS, Lee JE, Kim SR, Lee GH, Xu X, Byun EB, Ahn DH. Effects of Gamma Irradiation on Inhibition of Urease Activity and Fishy Smell in Mackerel ( Scomber japonicus) during Refrigerated Storage. J Microbiol Biotechnol 2022; 32:808-815. [PMID: 35637171 PMCID: PMC9628912 DOI: 10.4014/jmb.2112.12037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 04/27/2022] [Accepted: 05/09/2022] [Indexed: 12/15/2022]
Abstract
In this study, gamma-irradiated mackerel (Scomber japonicus) meat was stored in a refrigerator for 20 days to examine the physicochemical changes related to fishy smell. The effect of gamma irradiation on the inhibition of the activity of crude urease extracted from Vibrio parahaemolyticus was also evaluated. Increased levels of trimethylamine (TMA) and volatile basic nitrogen (VBN) content, which are the main components causing fishy smell, were significantly reduced by day 20 of storage after gamma irradiation, indicating that freshness was maintained during storage. The ammonia nitrogen contents of 3, 7, 10, and 20 kGy gamma-irradiated groups were significantly decreased by 6.5, 15.2, 17.4, and 23.9%, respectively, compared to non-irradiated groups on day 20 of storage. In addition, urease activity decreased in a gamma irradiation intensity-dependent manner. Volatile organic compounds (VOCs) were measured during the storage of gamma-irradiated mackerel meat. The contents of ethanol, 2-butanone, 3-methylbutanal, and trans-2-pentenal, which are known to cause off-flavors due to spoilage of fish, were significantly reduced by day 20 of storage. Therefore, gamma irradiation can be considered useful for inhibiting urease activity and reducing fishy smell during fish storage.
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Affiliation(s)
- So-Mi Jeong
- Institute of Fisheries Sciences, Pukyong National University, Busan 46041, Republic of Korea
| | - Han-Ho Kim
- Department of Food Science & Technology and Institute of Food Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Si-Hyeong Ryu
- Department of Food Science & Technology and Institute of Food Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Woo-Sin Kang
- Department of Food Science & Technology and Institute of Food Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Ji-Eun Lee
- Department of Food Science & Technology and Institute of Food Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Su-Ryong Kim
- Department of Food Science & Technology and Institute of Food Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Ga-Hye Lee
- Institute of Fisheries Sciences, Pukyong National University, Busan 46041, Republic of Korea
| | - Xiaotong Xu
- Department of Food Science & Technology and Institute of Food Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Eui-baek Byun
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongup 34057, Republic of Korea
| | - Dong-Hyun Ahn
- Department of Food Science & Technology and Institute of Food Science, Pukyong National University, Busan 48513, Republic of Korea,Corresponding author Phone: +82-51-629-5831 Fax: +82-51-629-5824 E-mail:
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Leeprasert L, Chonudomkul D, Boonmak C. Biocalcifying Potential of Ureolytic Bacteria Isolated from Soil for Biocementation and Material Crack Repair. Microorganisms 2022; 10:963. [PMID: 35630407 PMCID: PMC9143465 DOI: 10.3390/microorganisms10050963] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/30/2022] [Accepted: 05/01/2022] [Indexed: 02/04/2023] Open
Abstract
Microbially induced calcium carbonate precipitation (MICP) has been highlighted for its application in civil engineering, and in the environmental and geotechnical fields. Ureolytic activity is one of the most promising bacterial mechanisms in terms of inducing calcium carbonate formation. In this study, four bacterial isolates with high-yield urease production capabilities were obtained from two-step screening using a high-buffered urea medium. The highest urease activity and calcium carbonate formation was observed in Lysinibacillus fusiformis 5.1 with 4.40 × 103 unit/L of urease and 24.15 mg/mL of calcium carbonate, followed by Lysinibacillus xylanilyticus 4.3 with 3.93 × 103 unit/L of urease and 22.85 mg/mL of calcium carbonate. The microstructure of the precipitated crystalline calcium carbonate was observed using scanning electron microscopy. X-ray diffraction analysis confirmed that the main polymorph of the calcium carbonate particle obtained from both isolates was calcite. Examination of the material-crack filling in mortar specimens showed that calcite layers had formed along the crack edges and inside after 10 days, and gradually filled the cracks up to the upper surface. These results showed that these two isolates presented robust characteristics of potential MICP-inducing bacteria for civil engineering and material engineering applications.
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Affiliation(s)
- Laxmi Leeprasert
- Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (L.L.); (D.C.)
| | - Duenrut Chonudomkul
- Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (L.L.); (D.C.)
- Biodiversity Center Kasetsart University (BDCKU), Bangkok 10900, Thailand
| | - Chanita Boonmak
- Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (L.L.); (D.C.)
- Biodiversity Center Kasetsart University (BDCKU), Bangkok 10900, Thailand
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Kong X, Li Y, Liu X. A review of thermosensitive antinutritional factors in plant-based foods. J Food Biochem 2022; 46:e14199. [PMID: 35502149 DOI: 10.1111/jfbc.14199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/05/2022] [Accepted: 04/07/2022] [Indexed: 12/01/2022]
Abstract
Legumes and cereals account for the vast proportion of people's daily intake of plant-based foods. Meanwhile, a large number of antinutritional factors in legumes and cereals hinder the body absorption of nutrients and reduce the nutritional value of food. In this paper, the antinutritional effects, determination, and passivation methods of thermosensitive antinutritional factors such as trypsin inhibitors, urease, lipoxygenase, and lectin were reviewed to provide theoretical help to reduce antinutritional factors in food and improve the utilization rate of plant-based food nutrition. Since trypsin inhibitors and lectin have been more extensively studied and reviewed previously, the review mainly focused on urease and lipoxygenase. This review summarized the information of thermosensitive antinutritional factors, trypsin inhibitors, urease, lipoxygenase, and lectin, in cereals and legumes. The antinutritional effects, and physical and chemical properties of trypsin inhibitors, urease, lipoxygenase, and lectin were introduced. At the same time, the research methods for the detection and inactivation of these four antinutritional factors were also summarized in the order of research conducted time. The rapid determination and inactivation of antinutrients will be the focus of attention for the food industry in the future to improve the nutritional value of food. Exploring what structural changes could passivation technologies bring to antinutritional factors will provide a theoretical basis for further understanding the mechanisms of antinutritional factor inactivation. PRACTICAL APPLICATIONS: Antinutritional factors in plant-based foods hinder the absorption of nutrients and reduce the nutritional value of the food. Among them, thermosensitive antinutritional factors, such as trypsin inhibitors, urease, lipoxygenase, and lectins, have a high proportion among the antinutritional factors. In this paper, we investigate thermosensitive antinutritional factors from three perspectives: the antinutritional effect of thermosensitive antinutritional factors, determination, and passivation methods. The current passivation methods for thermosensitive antinutritional factors revolve around biological, physical, and chemical aspects, and their elimination mechanisms still need further research, especially at the protein structure level. Reducing the level of antinutritional factors in the future food industry while controlling the loss of other nutrients in food is a goal that needs to be balanced. This paper reviews the antinutritional effects of thermosensitive antinutritional factors and passivation methods, expecting to provide new research ideas to improve the nutrient utilization of food.
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Affiliation(s)
- Xin Kong
- College of Food and Health, National Soybean Processing Industry Technology Innovation Center, Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China
| | - You Li
- College of Food and Health, National Soybean Processing Industry Technology Innovation Center, Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China
| | - Xinqi Liu
- College of Food and Health, National Soybean Processing Industry Technology Innovation Center, Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China
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49
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Wang L, Wang X, Li F, Cui M, Yang X, Yang M, Yan Y. [Advances of enzymes related to microbial cement]. Sheng Wu Gong Cheng Xue Bao 2022; 38:506-517. [PMID: 35234378 DOI: 10.13345/j.cjb.210127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Microbial induced calcium carbonate precipitation (MICP) refers to the natural biological process of calcium carbonate precipitation induced by microbial metabolism in its surrounding environment. Based on the principles of MICP, microbial cement has been developed and has received widespread attention in the field of biology, civil engineering, and environment owing to the merits of environmental friendliness and economic competence. Urease and carbonic anhydrase are the key enzymes closely related to microbial cement. This review summarizes the genes, protein structures, regulatory mechanisms, engineering strains and mutual synergistic relationship of these two enzymes. The application of bioinformatics and synthetic biology is expected to develop biocement with a wide range of environmental adaptability and high performance, and will bring the MICP research to a new height.
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Affiliation(s)
- Lei Wang
- School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.,School of Chemical Engineering & Food Science, Zhengzhou University of Technology, Zhengzhou 450044, He'nan, China
| | - Xuxia Wang
- School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.,School of Urban Construction, Wuchang Shouyi University, Wuhan 430064, Hubei, China
| | - Fei Li
- School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Mingjuan Cui
- School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Xiaoxu Yang
- School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Min Yang
- School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Yunjun Yan
- School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
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Zheng J, Qi R, Dai C, Li G, Sang M. Enzyme Catalysis Biomotor Engineering of Neutrophils for Nanodrug Delivery and Cell-Based Thrombolytic Therapy. ACS Nano 2022; 16:2330-2344. [PMID: 35138084 DOI: 10.1021/acsnano.1c08538] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Utilizing neutrophils (NEs) to target and deliver nanodrugs to inflammation sites has received considerable attention. NEs are involved in the formation and development of thrombosis by transforming into neutrophil extracellular traps (NETs); this indicates that NEs may be a natural thrombolytic drug delivery carrier. However, NEs lack an effective power system to overcome blood flow resistance and enhance targeting efficiency. Herein, we report the application of a urease catalysis micromotor powered NEs nanodrug delivery system to promote thrombolysis and suppress rethrombosis. The urease micromotor powered Janus NEs (UM-NEs) were prepared by immobilizing the enzyme asymmetrically onto the surface of natural NEs and then loading urokinase (UK) coupled silver (Ag) nanoparticles (Ag-UK) to obtain the UM-NEs (Ag-UK) system. Urease catalytic endogenous urea is used to generate thrust by producing ammonia and carbon dioxide, which propels NEs actively targeting the thrombus. The UM-NEs (Ag-UK) can be activated by enriched inflammatory cytokines to release NETs at the thrombosis site, resulting in a concomitant release of Ag-UK. Ag-UK induces thrombolysis to restore vascular recanalization. This urease micromotor-driven NEs drug delivery system can significantly reduce the hemorrhagic side effects, promote thrombolysis, and inhibit rethrombosis with high bioavailability and biosafety, which can be used for the treatment of thrombotic diseases.
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Affiliation(s)
- Jinrong Zheng
- Institute of Cardiovascular Diseases, Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, 2999 Jinshan Road, Huli District, Xiamen, China 361006
| | - Ruiqiang Qi
- Institute of Cardiovascular Diseases, Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, 2999 Jinshan Road, Huli District, Xiamen, China 361006
| | - Cuilian Dai
- Institute of Cardiovascular Diseases, Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, 2999 Jinshan Road, Huli District, Xiamen, China 361006
| | - Gang Li
- Institute of Cardiovascular Diseases, Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, 2999 Jinshan Road, Huli District, Xiamen, China 361006
| | - Mangmang Sang
- Institute of Cardiovascular Diseases, Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, 2999 Jinshan Road, Huli District, Xiamen, China 361006
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