1
|
Khair-ul-Bariyah S, Sarfraz M, Arshad M, Waseem A, Khan HU, Khan S, Sharif A, Farooqi ZH, Ahmed E. Synthesis of 2-aminothiazole sulfonamides as potent biological agents: Synthesis, structural investigations and docking studies. Heliyon 2024; 10:e34980. [PMID: 39157352 PMCID: PMC11327602 DOI: 10.1016/j.heliyon.2024.e34980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 07/18/2024] [Accepted: 07/19/2024] [Indexed: 08/20/2024] Open
Abstract
A simplified synthetic approach involving sulfonylation followed by amino group alkylation produced new 2-aminothiazole derivatives. UV/Vis, infrared, and NMR spectroscopies confirmed their structures. Compounds 36, 22, 34, and 35 showed strong inhibition against Jack bean and Bacillus Pasteurii urease, with IC50 values from 14.06 to 20.21 μM/mL. Compounds 20, 26, 21, 29, 30, 31, and 32 exhibited potent inhibitory effects against α-glucosidase and α-amylase, with IC50 values between 20.34 and 37.20 μM/mL. Compounds 33, 26, and 27 demonstrated potent DPPH scavenging, with IC50 values around 34.4-39.2 μM/mL. FMO analysis showed compounds 21, 22, 24, and 25 having parallel aromatic ring systems due to π cloud interactions, while compounds 32 and 38 had distinct electronic density distributions. Compound 22 had HOMO and LUMO energy gaps of 5.805 eV, with bromo and fluoro substitutions in compounds 21 and 24 slightly increasing the gaps to 6.089 eV and 6.078 eV, respectively. Nitro groups in compounds 25 and 32 reduced the gaps to 0.384 eV and 1.187 eV. All compounds demonstrated high gastrointestinal absorption, non-permeability to the blood-brain barrier, and optimal skin permeation (Log Kp between -5.83 and -6.54 cm/s). Compounds 22, 24, and 38 had promising QED scores of 0.719, 0.707, and 0.860, respectively, with synthetic accessibility scores from 2.057 to 2.517. ADMET predictions indicated minimal toxicity, cardiovascular safety, and significant inhibitory potential for CYP enzymes. Strong in silico binding affinities (binding energies -5.75 to -7.63 kcal/mol) and metabolic stability suggest these derivatives are promising candidates for further drug development.
Collapse
Affiliation(s)
| | - Muhammad Sarfraz
- Institute of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Muhammad Arshad
- Institute of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Amir Waseem
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Hidayat Ullah Khan
- Department of Chemistry, University of Science and Technology, Bannu, 28100, Pakistan
| | - Shahnaz Khan
- Department of Chemistry, University of Science and Technology, Bannu, 28100, Pakistan
| | - Ahsan Sharif
- School of Chemistry, University of the Punjab, 54590, Pakistan
| | | | - Ejaz Ahmed
- School of Chemistry, University of the Punjab, 54590, Pakistan
| |
Collapse
|
2
|
Yao M, Cao J, Zhang L, Wang K, Lin H, Qin L, Zhang Q, Qu C, Miao J, Xue C. Indole-3-Lactic Acid Derived from Lacticaseibacillus paracasei Inhibits Helicobacter pylori Infection via Destruction of Bacteria Cells, Protection of Gastric Mucosa Epithelial Cells, and Alleviation of Inflammation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:15725-15739. [PMID: 38973111 DOI: 10.1021/acs.jafc.4c02868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Indole-3-lactic acid (ILA) has exhibited antimicrobial properties. However, its role in inhibiting Helicobacter pylori infection remains elusive. This study investigated the inhibitory effect of ILA produced by Lacticaseibacillus paracasei on H. pylori, which was further confirmed by cell and animal experiments. 5 mg/mL ILA was sufficient to directly inhibit the growth of H. pylori in vitro, with a urease inhibitory activity reaching 60.94 ± 1.03%, and the cell morphology and structure were destroyed. ILA inhibited 56.5% adhesion of H. pylori to GES-1 and significantly reduced the number of apoptotic cells. Furthermore, ILA suppresses H. pylori colonization by approximately 38% to 63%, reduced inflammation and oxidative stress in H. pylori-infected mice, and enhanced the enrichment and variety of gut microbiota, notably fostering the growth of beneficial bacteria such as Lactobacillus and Bifidobacterium strains. The results support that ILA derived from Lactobacillus can be applicated as a novel prebiotic in anti-H. pylori functional foods.
Collapse
Affiliation(s)
- Mengke Yao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Junhan Cao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Liping Zhang
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Kai Wang
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Huan Lin
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Ling Qin
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Qing Zhang
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Changfeng Qu
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Marine Natural Products R&D Laboratory, Qingdao Key Laboratory, Qingdao 266061, China
| | - Jinlai Miao
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Marine Natural Products R&D Laboratory, Qingdao Key Laboratory, Qingdao 266061, China
| | - Changhu Xue
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| |
Collapse
|
3
|
Wang N, Wu X, Liang J, Liu B, Wang B. Molecular design of hydroxamic acid-based derivatives as urease inhibitors of Helicobacter pylori. Mol Divers 2024:10.1007/s11030-024-10914-9. [PMID: 39020133 DOI: 10.1007/s11030-024-10914-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Accepted: 06/08/2024] [Indexed: 07/19/2024]
Abstract
Helicobacter pylori is the main causative agent of gastric cancer, especially non-cardiac gastric cancers. This bacterium relies on urease producing much ammonia to colonize the host. Herein, the study provides valuable insights into structural patterns driving urease inhibition for high-activity molecules designed via exploring known inhibitors. Firstly, an ensemble model was devised to predict the inhibitory activity of novel compounds in an automated workflow (R2 = 0.761) that combines four machine learning approaches. The dataset was characterized in terms of chemical space, including molecular scaffolds, clustering analysis, distribution for physicochemical properties, and activity cliffs. Through these analyses, the hydroxamic acid group and the benzene ring responsible for distinct activity were highlighted. Activity cliff pairs uncovered substituents of the benzene ring on hydroxamic acid derivatives are key structures for substantial activity enhancement. Moreover, 11 hydroxamic acid derivatives were designed, named mol1-11. Results of molecular dynamic simulations showed that the mol9 exhibited stabilization of the active site flap's closed conformation and are expected to be promising drug candidates for Helicobacter pylori infection and further in vitro, in vivo, and clinical trials to demonstrate in future.
Collapse
Affiliation(s)
- Na Wang
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510630, China
| | - Xiaoyan Wu
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510630, China
| | - Jianhuai Liang
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510630, China
| | - Boping Liu
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510630, China.
| | - Bingfeng Wang
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510630, China.
| |
Collapse
|
4
|
Dilip H, Thiruvenkatam V, Kirubakaran S. Studies on Methylpyrazole-Substituted Benzimidazoles to Target Helicobacter pylori Infection through HpIMPDH Inhibition. ACS Infect Dis 2024; 10:2262-2275. [PMID: 38787329 DOI: 10.1021/acsinfecdis.4c00228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
The prevalence of Helicobacter pylori infection has been increasing rapidly due to the genetic heterogeneity and antibacterial resistance shown by the bacteria, affecting over 50% of the world population and over 80% of the Indian population, in particular. In this regard, novel drug targets are currently being explored, one of which is the crucial metabolic enzyme inosine-5'-monophosphate dehydrogenase (IMPDH) involved in the de novo nucleotide biosynthesis pathway, in order to combat the infection and devise efficient therapeutic strategies. The present study reports the development of methylpyrazole-substituted benzimidazoles as small molecule inhibitors of H. pylori IMPDH with a nanomolar range of enzyme inhibition. A set of 19 small molecules have been designed, synthesized, and further evaluated for their inhibitory potential against H. pylori IMPDH using in silico, in vitro, biochemical, and biophysical techniques. Compound 7j was found to inhibit H. pylori IMPDH with an IC50 value of 0.095 ± 0.023 μM, which is close to 1.5-fold increase in the inhibitory activity, in comparison to the previously reported benzimidazole-based hit C91. Moreover, kinetic characterization has provided significant insights into the uncompetitive inhibition shown by these small molecules on H. pylori IMPDH, thus providing details about the enzyme inhibition mechanism. In conclusion, methylpyrazole-based small molecules indicate a promising path to develop cheap and bioavailable drugs to efficiently treat H. pylori infection in the coming years, in comparison to the currently available therapy.
Collapse
Affiliation(s)
- Haritha Dilip
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India
| | - Vijay Thiruvenkatam
- Department of Biological Sciences and Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India
| | - Sivapriya Kirubakaran
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India
| |
Collapse
|
5
|
Viana LPS, Naves GM, Medeiros IG, Guimarães AS, Sousa ES, Santos JCC, Freire NML, de Aquino TM, Modolo LV, de Fátima Â, da Silva CM. Synergizing structure and function: Cinnamoyl hydroxamic acids as potent urease inhibitors. Bioorg Chem 2024; 146:107247. [PMID: 38493635 DOI: 10.1016/j.bioorg.2024.107247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/16/2024] [Accepted: 02/27/2024] [Indexed: 03/19/2024]
Abstract
The current investigation encompasses the structural planning, synthesis, and evaluation of the urease inhibitory activity of a series of molecular hybrids of hydroxamic acids and Michael acceptors, delineated from the structure of cinnamic acids. The synthesized compounds exhibited potent urease inhibitory effects, with IC50 values ranging from 3.8 to 12.8 µM. Kinetic experiments unveiled that the majority of the synthesized hybrids display characteristics of mixed inhibitors. Generally, derivatives containing electron-withdrawing groups on the aromatic ring demonstrate heightened activity, indicating that the increased electrophilicity of the beta carbon in the Michael Acceptor moiety positively influences the antiureolytic properties of this compounds class. Biophysical and theoretical investigations further corroborated the findings obtained from kinetic assays. These studies suggest that the hydroxamic acid core interacts with the urease active site, while the Michael acceptor moiety binds to one or more allosteric sites adjacent to the active site.
Collapse
Affiliation(s)
- Luciana P S Viana
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Giovanna M Naves
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Isabela G Medeiros
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ari S Guimarães
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Maceió, AL, Brazil
| | - Emilly S Sousa
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Maceió, AL, Brazil
| | - Josué C C Santos
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Maceió, AL, Brazil
| | - Nathália M L Freire
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Maceió, AL, Brazil
| | - Thiago M de Aquino
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Maceió, AL, Brazil
| | - Luzia V Modolo
- Departamento de Botânica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ângelo de Fátima
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Cleiton M da Silva
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| |
Collapse
|
6
|
Deng H, Zhang Y, Cai X, Yin Z, Yang Y, Dong Q, Qiu Y, Chen Z. Dual-Targeted Graphitic Cascade Nanozymes for Recognition and Treatment of Helicobacter pylori. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306155. [PMID: 37991257 DOI: 10.1002/smll.202306155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 11/08/2023] [Indexed: 11/23/2023]
Abstract
Helicobacter pylori (H. pylori) is the major etiological factor of a variety of gastric diseases. However, the treatment of H. pylori is challenged by the destruction of targeted drugs by gastric acid and pepsin. Herein, a dual-targeted cascade catalytic nanozyme PtCo@Graphene@Hemin-2(L-arginine) (PtCo@G@H2A) is designed for the treatment of H. pylori. The dual-targeting ability of PtCo@G@H2A is derived from directly targeting the receptor protein of H. pylori through hemin and responding to the acidic environment to cause charge reversal (protonation of L-arginine) to capture H. pylori, achieving efficient targeting effect. Compared with the single-targeting strategy relying on hemin, the dual-targeting strategy can greatly improve the targeting rate, achieving an increase of 850% targeting rate. At the concentration of NaHCO3 in intestinal fluid, the surface potential of PtCo@G@H2A can be quickly restored to avoid side effects. Meanwhile, PtCo@G@H2A has pH-responsive oxidase-like activity, which can generate nitric oxide (NO) through a cascade catalytic process that first generates reactive oxygen species (ROS) with oxygen, and further oxidizes L-arginine through ROS, realizing a superior acid-selective bactericidal effect. Overall, it proposes a promising strategy for the treatment of H. pylori that maintains high targeting and therapeutic effects in the environment of gastric acid and pepsin.
Collapse
Affiliation(s)
- Hui Deng
- Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
| | - Yi Zhang
- Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
| | - Xinqi Cai
- Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
| | - Zhiwei Yin
- Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
| | - Yanxia Yang
- Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
| | - Qian Dong
- Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
| | - Ye Qiu
- Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
| | - Zhuo Chen
- Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
| |
Collapse
|
7
|
Yang W, Peng Z, Wang G. An overview: metal-based inhibitors of urease. J Enzyme Inhib Med Chem 2023; 38:361-375. [PMID: 36446640 PMCID: PMC11003495 DOI: 10.1080/14756366.2022.2150182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 11/16/2022] [Indexed: 12/03/2022] Open
Abstract
Urease is a kind of nickel-dependent metalloenzyme, which exists in the biological world widely, and can catalyse the hydrolysis of urea into ammonia and carbon dioxide to provide a nitrogen source for organisms. Urease has important uses in agriculture and medicine because it can catalyse the production of ammonia. Therefore, in this review, metal-based inhibitors of urease will be summarised according to different transition metal ions. Including the urease inhibition, structure-activity relationship, and molecular docking. Importantly, among these reviewed effective urease inhibitors, most of copper metal complexes exhibited stronger urease inhibition with IC50 values ranging from 0.46 μM to 41.1 μM. Significantly, the collected comprehensive information looks forward to providing rational guidance and effective strategies for the development of novel, potent, and safe metal-based urease inhibitors, which are better for practical applications in the future.
Collapse
Affiliation(s)
- Wei Yang
- Clinical Trails Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China
| | - Zhiyun Peng
- Clinical Trails Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Guangcheng Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China
| |
Collapse
|
8
|
Seeger AY, Zaidi F, Alhayek S, Jones RM, Zohair H, Holland RL, Kim IJ, Blanke SR. Host cell sensing and restoration of mitochondrial function and metabolism within Helicobacter pylori VacA intoxicated cells. mBio 2023; 14:e0211723. [PMID: 37815365 PMCID: PMC10653863 DOI: 10.1128/mbio.02117-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 08/23/2023] [Indexed: 10/11/2023] Open
Abstract
IMPORTANCE Persistent human gastric infection with Helicobacter pylori is the single most important risk factor for development of gastric malignancy, which is one of the leading causes of cancer-related deaths worldwide. An important virulence factor for Hp colonization and severity of gastric disease is the protein exotoxin VacA, which is secreted by the bacterium and modulates functional properties of gastric cells. VacA acts by damaging mitochondria, which impairs host cell metabolism through impairment of energy production. Here, we demonstrate that intoxicated cells have the capacity to detect VacA-mediated damage, and orchestrate the repair of mitochondrial function, thereby restoring cellular health and vitality. This study provides new insights into cellular recognition and responses to intracellular-acting toxin modulation of host cell function, which could be relevant for the growing list of pathogenic microbes and viruses identified that target mitochondria as part of their virulence strategies.
Collapse
Affiliation(s)
- Ami Y. Seeger
- Department of Microbiology, University of Illinois, Urbana, Illinois, USA
| | - Faisal Zaidi
- Department of Microbiology, University of Illinois, Urbana, Illinois, USA
| | - Sammy Alhayek
- Department of Microbiology, University of Illinois, Urbana, Illinois, USA
| | - Rachel M. Jones
- Department of Microbiology, University of Illinois, Urbana, Illinois, USA
| | - Huzaifa Zohair
- Department of Microbiology, University of Illinois, Urbana, Illinois, USA
| | - Robin L. Holland
- Department of Pathobiology, University of Illinois, Urbana, Illinois, USA
| | - Ik-Jung Kim
- Department of Microbiology, University of Illinois, Urbana, Illinois, USA
- Buck Institute for Research on Aging, Novato, California, USA
| | - Steven R. Blanke
- Department of Microbiology, University of Illinois, Urbana, Illinois, USA
- Department of Pathobiology, University of Illinois, Urbana, Illinois, USA
- Department of Biomedical and Translational Medicine, University of Illinois, Urbana, Illinois, USA
| |
Collapse
|
9
|
Jiang S, Zhang C, Han Z, Ma W, Wang S, Huo D, Cui W, Zhai Q, Huang S, Zhang J. Native microbiome dominates over host factors in shaping the probiotic genetic evolution in the gut. NPJ Biofilms Microbiomes 2023; 9:80. [PMID: 37838684 PMCID: PMC10576824 DOI: 10.1038/s41522-023-00447-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 10/02/2023] [Indexed: 10/16/2023] Open
Abstract
Probiotics often acquire potentially adaptive mutations in vivo, gaining new functional traits through gut selection. While both the host and microbiome can contribute to probiotics' genetic evolution, separating the microbiome and the host's contribution to such selective pressures remains challenging. Here, we introduced germ-free (GF) and specific pathogen-free (SPF) mouse models to track how probiotic strains, i.e., Lactiplantibacillus plantarum HNU082 (Lp082) and Bifidobacterium animalis subsp. lactis V9 (BV9), genetically evolved under selection pressures derived from host factors alone and both host and microbial ecological factors. Notably, compared to the genome of a probiotic strain before consumption, the host only elicited <15 probiotic mutations in probiotic genomes that emerged in the luminal environment of GF mice, while a total of 840 mutations in Lp082 mutants and 21,579 mutations in BV9 were found in SPF mice, <0.25% of those derived from both factors that were never captured by other experimental evolution studies, indicating that keen microbial competitions exhibited the predominant evolutionary force in shaping probiotic genetic composition (>99.75%). For a given probiotic, functional genes occurring in potentially adaptive mutations induced by hosts (GF mice) were all shared with those found in mutants of SPF mice. Collectively, the native microbiome consistently drove a more rapid and divergent genetic evolution of probiotic strains in seven days of colonization than host factors did. Our study further laid a theoretical foundation for genetically engineering probiotics for better gut adaptation through in vitro artificial gut ecosystems without the selection pressures derived from host factors.
Collapse
Affiliation(s)
- Shuaiming Jiang
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, 570228, China
| | - Chengcheng Zhang
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Zhe Han
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, 570228, China
| | - Wenyao Ma
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, 570228, China
| | - Shunhe Wang
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Dongxue Huo
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, 570228, China
| | - Weipeng Cui
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, 570228, China
| | - Qixiao Zhai
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.
| | - Shi Huang
- Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
| | - Jiachao Zhang
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, 570228, China.
- One Health Institute, Hainan University, Haikou, Hainan, 570228, China.
| |
Collapse
|
10
|
Fatima M, Aslam S, Zafar AM, Irfan A, Khan MA, Ashraf M, Faisal S, Noreen S, Shazly GA, Shah BR, Bin Jardan YA. Exploring the Synthetic Chemistry of Phenyl-3-(5-aryl-2-furyl)- 2-propen-1-ones as Urease Inhibitors: Mechanistic Approach through Urease Inhibition, Molecular Docking and Structure-Activity Relationship. Biomedicines 2023; 11:2428. [PMID: 37760869 PMCID: PMC10525509 DOI: 10.3390/biomedicines11092428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/22/2023] [Accepted: 08/25/2023] [Indexed: 09/29/2023] Open
Abstract
Furan chalcone scaffolds belong to the most privileged and promising oxygen-containing heterocyclic class of compounds, which have a wide spectrum of therapeutic applications in the field of pharmaceutics, pharmacology, and medicinal chemistry. This research described the synthesis of a series of twelve novel and seven reported furan chalcone (conventional synthetic approach) analogues 4a-s through the application of microwave-assisted synthetic methodology and evaluated for therapeutic inhibition potential against bacterial urease enzyme. In the first step, a series of nineteen substituted 5-aryl-2-furan-2-carbaldehyde derivatives 3a-s were achieved in moderate to good yields (40-70%). These substituted 5-aryl-2-furan-2-carbaldehyde derivatives 3a-s were condensed with acetophenone via Claisen-Schmidt condensation to furnish 19 substituted furan chalcone scaffolds 4a-s in excellent yields (85-92%) in microwave-assisted synthetic approach, while in conventional methodology, these furan chalcone 4a-s were furnished in good yield (65-90%). Furan chalcone structural motifs 4a-s were characterized through elemental analysis and spectroscopic techniques. These nineteen (19)-afforded furan chalcones 4a-s were screened for urease inhibitory chemotherapeutic efficacy and most of the furan chalcones displayed promising urease inhibition activity. The most active urease inhibitors were 1-phenyl-3-[5-(2',5'-dichlorophenyl)-2-furyl]-2-propen-1-one 4h with an IC50 value of 16.13 ± 2.45 μM, and 1-phenyl- 3-[5-(2'-chlorophenyl)-2-furyl] -2-propen-1-one 4s with an IC50 value of 18.75 ± 0.85 μM in comparison with reference drug thiourea (IC50 = 21.25 ± 0.15 μM). These furan chalcone derivatives 4h and 4s are more efficient urease inhibitors than reference drug thiourea. Structure-activity relationship (SAR) revealed that the 2,5-dichloro 4h and 2-chloro 4s moiety containing furan chalcone derivatives may be considered as potential lead reagents for urease inhibition. The in silico molecular docking study results are in agreement with the experimental biological findings. The results of this study may be helpful in the future drug discovery and designing of novel efficient urease inhibitory agents from this biologically active class of furan chalcones.
Collapse
Affiliation(s)
- Miraj Fatima
- Department of Chemistry, The Women University, Multan 66000, Pakistan
| | - Samina Aslam
- Department of Chemistry, The Women University, Multan 66000, Pakistan
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Ansa Madeeha Zafar
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
- Department of Chemistry, Government Sadiq Women University, Bahawalpur 63100, Pakistan
| | - Ali Irfan
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan;
| | - Misbahul Ain Khan
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Muhammad Ashraf
- Department of Biotechnology and Biochemistry, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Shah Faisal
- Department of Chemistry, Islamia College University Peshawar, Peshawar 25120, Pakistan
| | - Sobia Noreen
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | - Gamal A. Shazly
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Bakht Ramin Shah
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic
| | - Yousef A. Bin Jardan
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| |
Collapse
|
11
|
Holland RL, Bosi KD, Seeger AY, Blanke SR. Restoration of mitochondrial structure and function within Helicobacter pylori VacA intoxicated cells. ADVANCES IN MICROBIOLOGY 2023; 13:399-419. [PMID: 37654621 PMCID: PMC10470862 DOI: 10.4236/aim.2023.138026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
The Helicobacter pylori vacuolating cytotoxin (VacA) is an intracellular, mitochondrial-targeting exotoxin that rapidly causes mitochondrial dysfunction and fragmentation. Although VacA targeting of mitochondria has been reported to alter overall cellular metabolism, there is little known about the consequences of extended exposure to the toxin. Here, we describe studies to address this gap in knowledge, which have revealed that mitochondrial dysfunction and fragmentation are followed by a time-dependent recovery of mitochondrial structure, mitochondrial transmembrane potential, and cellular ATP levels. Cells exposed to VacA also initially demonstrated a reduction in oxidative phosphorylation, as well as increase in compensatory aerobic glycolysis. These metabolic alterations were reversed in cells with limited toxin exposure, congruent with the recovery of mitochondrial transmembrane potential and the absence of cytochrome c release from the mitochondria. Taken together, these results are consistent with a model that mitochondrial structure and function are restored in VacA-intoxicated cells.
Collapse
Affiliation(s)
- Robin L. Holland
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, Illinois, 61801
| | - Kristopher D. Bosi
- Department of Microbiology, School of Molecular and Cellular Biology, University of Illinois Urbana-Champaign, Urbana, Illinois, 61801
| | - Ami Y. Seeger
- Department of Microbiology, School of Molecular and Cellular Biology, University of Illinois Urbana-Champaign, Urbana, Illinois, 61801
| | - Steven R. Blanke
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, Illinois, 61801
- Department of Microbiology, School of Molecular and Cellular Biology, University of Illinois Urbana-Champaign, Urbana, Illinois, 61801
- Biomedical and Translational Sciences Department, Carle Illinois College of Medicine, University of Illinois, Urbana, Illinois 61801
| |
Collapse
|
12
|
Ahmed AAQ, Besio R, Xiao L, Forlino A. Outer Membrane Vesicles (OMVs) as Biomedical Tools and Their Relevance as Immune-Modulating Agents against H. pylori Infections: Current Status and Future Prospects. Int J Mol Sci 2023; 24:ijms24108542. [PMID: 37239888 DOI: 10.3390/ijms24108542] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/26/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
Outer membrane vesicles (OMVs) are lipid-membrane-bounded nanoparticles that are released from Gram-negative bacteria via vesiculation of the outer membrane. They have vital roles in different biological processes and recently, they have received increasing attention as possible candidates for a broad variety of biomedical applications. In particular, OMVs have several characteristics that enable them to be promising candidates for immune modulation against pathogens, such as their ability to induce the host immune responses given their resemblance to the parental bacterial cell. Helicobacter pylori (H. pylori) is a common Gram-negative bacterium that infects half of the world's population and causes several gastrointestinal diseases such as peptic ulcer, gastritis, gastric lymphoma, and gastric carcinoma. The current H. pylori treatment/prevention regimens are poorly effective and have limited success. This review explores the current status and future prospects of OMVs in biomedicine with a special focus on their use as a potential candidate in immune modulation against H. pylori and its associated diseases. The emerging strategies that can be used to design OMVs as viable immunogenic candidates are discussed.
Collapse
Affiliation(s)
- Abeer Ahmed Qaed Ahmed
- Department of Molecular Medicine, Biochemistry Unit, University of Pavia, 27100 Pavia, Italy
| | - Roberta Besio
- Department of Molecular Medicine, Biochemistry Unit, University of Pavia, 27100 Pavia, Italy
| | - Lin Xiao
- School of Biomedical Engineering, Shenzhen Campus, Sun Yat-sen University, Shenzhen 518107, China
| | - Antonella Forlino
- Department of Molecular Medicine, Biochemistry Unit, University of Pavia, 27100 Pavia, Italy
| |
Collapse
|
13
|
Luo Q, Liu N, Pu S, Zhuang Z, Gong H, Zhang D. A review on the research progress on non-pharmacological therapy of Helicobacter pylori. Front Microbiol 2023; 14:1134254. [PMID: 37007498 PMCID: PMC10063898 DOI: 10.3389/fmicb.2023.1134254] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 03/03/2023] [Indexed: 03/19/2023] Open
Abstract
Helicobacter pylori is a pathogenic microorganism that mainly resides in the human stomach and is the major cause of chronic gastritis, peptic ulcer and gastric cancer. Up to now, the treatment of Helicobacter pylori has been predominantly based on a combination of antibiotics and proton pump inhibitors. However, the increasing antibiotic resistance greatly limits the efficacy of anti-Helicobacter pylori treatment. Turning to non-antibiotic or non-pharmacological treatment is expected to solve this problem and may become a new strategy for treating Helicobacter pylori. In this review, we outline Helicobacter pylori’s colonization and virulence mechanisms. Moreover, a series of non-pharmacological treatment methods for Helicobacter pylori and their mechanisms are carefully summarized, including probiotics, oxygen-rich environment or hyperbaric oxygen therapy, antibacterial photodynamic therapy, nanomaterials, antimicrobial peptide therapy, phage therapy and modified lysins. Finally, we provide a comprehensive overview of the challenges and perspectives in developing new medical technologies for treating Helicobacter pylori without drugs.
Collapse
Affiliation(s)
- Qian Luo
- Department of Gastroenterology, The Second Clinical Medical College of Lanzhou University, LanZhou University Second Hospital, Lanzhou, China
| | - Na Liu
- Department of Gastroenterology, The Second Clinical Medical College of Lanzhou University, LanZhou University Second Hospital, Lanzhou, China
| | - Sugui Pu
- Department of Gastroenterology, The Second Clinical Medical College of Lanzhou University, LanZhou University Second Hospital, Lanzhou, China
| | - Ze Zhuang
- Department of Gastroenterology, The Second Clinical Medical College of Lanzhou University, LanZhou University Second Hospital, Lanzhou, China
| | - Hang Gong
- Department of Gastroenterology, The Second Clinical Medical College of Lanzhou University, LanZhou University Second Hospital, Lanzhou, China
| | - Dekui Zhang
- Department of Gastroenterology, The Second Clinical Medical College of Lanzhou University, LanZhou University Second Hospital, Lanzhou, China
- Key Laboratory of Digestive Diseases, LanZhou University Second Hospital, Lanzhou, China
- *Correspondence: Dekui Zhang,
| |
Collapse
|
14
|
Freire de Melo F, Marques HS, Rocha Pinheiro SL, Lemos FFB, Silva Luz M, Nayara Teixeira K, Souza CL, Oliveira MV. Influence of Helicobacter pylori oncoprotein CagA in gastric cancer: A critical-reflective analysis. World J Clin Oncol 2022; 13:866-879. [PMID: 36483973 PMCID: PMC9724182 DOI: 10.5306/wjco.v13.i11.866] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/20/2022] [Accepted: 10/11/2022] [Indexed: 11/21/2022] Open
Abstract
Gastric cancer is the fifth most common malignancy and third leading cancer-related cause of death worldwide. Helicobacter pylori is a Gram-negative bacterium that inhabits the gastric environment of 60.3% of the world’s population and represents the main risk factor for the onset of gastric neoplasms. CagA is the most important virulence factor in H. pylori, and is a translocated oncoprotein that induces morphofunctional modifications in gastric epithelial cells and a chronic inflammatory response that increases the risk of developing precancerous lesions. Upon translocation and tyrosine phosphorylation, CagA moves to the cell membrane and acts as a pathological scaffold protein that simultaneously interacts with multiple intracellular signaling pathways, thereby disrupting cell proliferation, differentiation and apoptosis. All these alterations in cell biology increase the risk of damaged cells acquiring pro-oncogenic genetic changes. In this sense, once gastric cancer sets in, its perpetuation is independent of the presence of the oncoprotein, characterizing a “hit-and-run” carcinogenic mechanism. Therefore, this review aims to describe H. pylori- and CagA-related oncogenic mechanisms, to update readers and discuss the novelties and perspectives in this field.
Collapse
Affiliation(s)
- Fabrício Freire de Melo
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | - Hanna Santos Marques
- Campus Vitória da Conquista, Universidade Estadual do Sudoeste da Bahia, Vitória da Conquista 45029-094, Brazil
| | - Samuel Luca Rocha Pinheiro
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | - Fabian Fellipe Bueno Lemos
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | - Marcel Silva Luz
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | | | - Cláudio Lima Souza
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | | |
Collapse
|
15
|
Nayab S, Khan M, Cho Y, Lee H. Urease inhibition and anti-leishmanial properties of Zn(II) complexes of thiophenyl and furyl-derived C2-symmetric ligands. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2143269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Saira Nayab
- Department of Chemistry, Shaheed Benazir Bhutto University (SBBU), Khyber Pakhtunkhwa, Islamic Republic of Pakistan
- Department of Chemistry, Green-Nano Materials Research Center, Kyungpook National University, Daegu, Republic of Korea
| | - Momin Khan
- Department of Microbiology, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Islamic Republic of Pakistan
| | - Yerim Cho
- Department of Chemistry, Green-Nano Materials Research Center, Kyungpook National University, Daegu, Republic of Korea
| | - Hyosun Lee
- Department of Chemistry, Green-Nano Materials Research Center, Kyungpook National University, Daegu, Republic of Korea
| |
Collapse
|
16
|
Freire de Melo F, Marques HS, Fellipe Bueno Lemos F, Silva Luz M, Rocha Pinheiro SL, de Carvalho LS, Souza CL, Oliveira MV. Role of nickel-regulated small RNA in modulation of Helicobacter pylori virulence factors. World J Clin Cases 2022; 10:11283-11291. [PMID: 36387830 PMCID: PMC9649571 DOI: 10.12998/wjcc.v10.i31.11283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/14/2022] [Accepted: 09/06/2022] [Indexed: 02/05/2023] Open
Abstract
Helicobacter pylori (H. pylori) is a Gram-negative bacterium that infects about half of the world's population. H. pylori infection prevails by several mechanisms of adaptation of the bacteria and by its virulence factors including the cytotoxin associated antigen A (CagA). CagA is an oncoprotein that is the protagonist of gastric carcinogenesis associated with prolonged H. pylori infection. In this sense, small regulatory RNAs (sRNAs) are important macromolecules capable of inhibiting and activating gene expression. This function allows sRNAs to act in adjusting to unstable environmental conditions and in responding to cellular stresses in bacterial infections. Recent discoveries have shown that nickel-regulated small RNA (NikS) is a post-transcriptional regulator of virulence properties of H. pylori, including the oncoprotein CagA. Notably, high concentrations of nickel cause the reduction of NikS expression and consequently this increases the levels of CagA. In addition, NikS expression appears to be lower in clinical isolates from patients with gastric cancer when compared to patients without. With that in mind, this minireview approaches, in an accessible way, the most important and current aspects about the role of NikS in the control of virulence factors of H. pylori and the potential clinical repercussions of this modulation.
Collapse
Affiliation(s)
- Fabrício Freire de Melo
- Institution Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | - Hanna Santos Marques
- Campus Vitória da Conquista, Universidade Estadual do Sudoeste da Bahia, Vitória da Conquista 45083-900, Brazil
| | - Fabian Fellipe Bueno Lemos
- Institution Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | - Marcel Silva Luz
- Institution Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | - Samuel Luca Rocha Pinheiro
- Institution Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | - Lorena Sousa de Carvalho
- Institution Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | - Cláudio Lima Souza
- Institution Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | - Márcio Vasconcelos Oliveira
- Institution Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| |
Collapse
|
17
|
Mahmud SA, Qureshi MA, Pellegrino MW. On the offense and defense: mitochondrial recovery programs amidst targeted pathogenic assault. FEBS J 2022; 289:7014-7037. [PMID: 34270874 PMCID: PMC9192128 DOI: 10.1111/febs.16126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/24/2021] [Accepted: 07/15/2021] [Indexed: 01/13/2023]
Abstract
Bacterial pathogens employ a variety of tactics to persist in their host and promote infection. Pathogens often target host organelles in order to benefit their survival, either through manipulation or subversion of their function. Mitochondria are regularly targeted by bacterial pathogens owing to their diverse cellular roles, including energy production and regulation of programmed cell death. However, disruption of normal mitochondrial function during infection can be detrimental to cell viability because of their essential nature. In response, cells use multiple quality control programs to mitigate mitochondrial dysfunction and promote recovery. In this review, we will provide an overview of mitochondrial recovery programs including mitochondrial dynamics, the mitochondrial unfolded protein response (UPRmt ), and mitophagy. We will then discuss the various approaches used by bacterial pathogens to target mitochondria, which result in mitochondrial dysfunction. Lastly, we will discuss how cells leverage mitochondrial recovery programs beyond their role in organelle repair, to promote host defense against pathogen infection.
Collapse
Affiliation(s)
- Siraje A Mahmud
- Department of Biology, University of Texas Arlington, TX, USA
| | | | | |
Collapse
|
18
|
Sichel SR, Bratton BP, Salama NR. Distinct regions of H. pylori's bactofilin CcmA regulate protein-protein interactions to control helical cell shape. eLife 2022; 11:e80111. [PMID: 36073778 PMCID: PMC9507126 DOI: 10.7554/elife.80111] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 09/07/2022] [Indexed: 11/26/2022] Open
Abstract
The helical shape of Helicobacter pylori cells promotes robust stomach colonization; however, how the helical shape of H. pylori cells is determined is unresolved. Previous work identified helical-cell-shape-promoting protein complexes containing a peptidoglycan-hydrolase (Csd1), a peptidoglycan precursor synthesis enzyme (MurF), a non-enzymatic homolog of Csd1 (Csd2), non-enzymatic transmembrane proteins (Csd5 and Csd7), and a bactofilin (CcmA). Bactofilins are highly conserved, spontaneously polymerizing cytoskeletal bacterial proteins. We sought to understand CcmA's function in generating the helical shape of H. pylori cells. Using CcmA deletion analysis, in vitro polymerization, and in vivo co-immunoprecipitation experiments, we identified that the bactofilin domain and N-terminal region of CcmA are required for helical cell shape and the bactofilin domain of CcmA is sufficient for polymerization and interactions with Csd5 and Csd7. We also found that CcmA's N-terminal region inhibits interaction with Csd7. Deleting the N-terminal region of CcmA increases CcmA-Csd7 interactions and destabilizes the peptidoglycan-hydrolase Csd1. Using super-resolution microscopy, we found that Csd5 recruits CcmA to the cell envelope and promotes CcmA enrichment at the major helical axis. Thus, CcmA helps organize cell-shape-determining proteins and peptidoglycan synthesis machinery to coordinate cell wall modification and synthesis, promoting the curvature required to build a helical cell.
Collapse
Affiliation(s)
- Sophie R Sichel
- Division of Human Biology, Fred Hutchinson Cancer CenterSeattleUnited States
- Molecular Medicine and Mechanisms of Disease Graduate Program, University of WashingtonSeattleUnited States
| | - Benjamin P Bratton
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical CenterNashvilleUnited States
- Vanderbilt Institute for Infection, Immunology and InflammationNashvilleUnited States
| | - Nina R Salama
- Division of Human Biology, Fred Hutchinson Cancer CenterSeattleUnited States
| |
Collapse
|
19
|
Phytochemical Investigation of Cordia africana Lam. Stem Bark: Molecular Simulation Approach. Molecules 2022; 27:molecules27134039. [PMID: 35807285 PMCID: PMC9268672 DOI: 10.3390/molecules27134039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 11/17/2022] Open
Abstract
Background: The current work planned to evaluate Cordia africana Lam. stem bark, a traditionally used herb in curing of different ailments in Africa such as gastritis and wound infections, based on phytochemical and antibacterial studies of two pathogenic microorganisms: methicillin-resistant Staphylococcus aureus (MRSA) and Helicobacter pylori. Methods: High performance liquid chromatography (HPLC) profiling was used for qualitative and quantitative investigation of the ethanol extract. The minimum inhibitory concentration (MIC) of the ethanolic extract and isolated compounds was estimated using the broth microdilution method and evidenced by molecular dynamics simulations. Results: Four compounds were isolated and identified for the first time: α-amyrin, β-sitosterol, rosmarinic acid (RA) and methyl rosmarinate (MR). HPLC analysis illustrated that MR was the dominant phenolic acid. MR showed the best bacterial inhibitory activity against MRSA and H. pylori with MIC 7.81 ± 1.7 μg/mL and 31.25 ± 0.6, respectively, when compared to clarithromycin and vancomycin, respectively. Conclusion: The antibacterial activity of the stem bark of Cordia africana Lam. was evidenced against MRSA and H. pylori. Computational modeling of the studied enzyme-ligands systems reveals that RA and MR can potentially inhibit both MRSA peptidoglycan transpeptidases and H. pylori urease, thereby creating a pathway via the use of a double target approach in antibacterial treatment.
Collapse
|
20
|
Said M, Khan H, Murtaza G, Sirajuddin M, Badshah A, Salman SM, Gul R, Najeebullah. Guanidine based copper(II) complexes: synthesis, structural elucidation, and biological evaluation. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2081185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Muhammad Said
- Department of Chemistry, University of Malakand, Chakdara, Pakistan
| | - Hizbullah Khan
- Department of Chemistry, University of Science and Technology Bannu, Bannu, Pakistan
| | - Ghulam Murtaza
- Department of Chemistry, Quaid-i-Azam University Islamabad, Islamabad, Pakistan
| | - Muhammad Sirajuddin
- Department of Chemistry, University of Science and Technology Bannu, Bannu, Pakistan
| | - Amin Badshah
- Department of Chemistry, Quaid-i-Azam University Islamabad, Islamabad, Pakistan
| | | | - Rukhsana Gul
- Department of Chemistry, Kohat University of Science and Technology, Kohat, Pakistan
| | - Najeebullah
- US Pak Center for Advanced Studies in Energy, University of Engineering and Technology Peshawar, Peshawar, Pakistan
| |
Collapse
|
21
|
Pranantyo D, Zhang K, Si Z, Hou Z, Chan-Park MB. Smart Multifunctional Polymer Systems as Alternatives or Supplements of Antibiotics To Overcome Bacterial Resistance. Biomacromolecules 2022; 23:1873-1891. [PMID: 35471022 DOI: 10.1021/acs.biomac.1c01614] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In recent years, infectious diseases have again become a critical threat to global public health largely due to the challenges posed by antimicrobial resistance. Conventional antibiotics have played a crucial role in combating bacterial infections; however, their efficacy is significantly impaired by widespread drug resistance. Natural antimicrobial peptides (AMPs) and their polymeric mimics demonstrate great potential for killing bacteria with low propensity of resistance as they target the microbial membrane rather than a specific molecular target, but they are also toxic to the host eukaryotic cells. To minimize antibiotics systemic spread and the required dose that promote resistance and to advocate practical realization of the promising activity of AMPs and polymers, smart systems to target bacteria are highly sought after. This review presents bacterial recognition by various specific targeting molecules and the delivery systems of active components in supramolecules. Bacteria-induced activations of antimicrobial-based nanoformulations are also included. Recent advances in the bacteria targeting and delivery of synthetic antimicrobial agents may assist in developing new classes of highly selective antimicrobial systems which can improve bactericidal efficacy and greatly minimize the spread of bacterial resistance.
Collapse
|
22
|
Feng X, Wu W, Gu Y, Zhang L, Wang S, Zhao J, Ji J, Shi D, You Z. A centipede like thiocyanate-bridged muti-nuclear copper(I/II) complex derived from 2-(((2-(dimethylamino)ethyl)imino)methyl)-5-fluorophenol with urease inhibitory activity. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2062232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Xinhui Feng
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Wenlong Wu
- School of Pharmacy, Jiangsu Ocean University, Lianyungang, PR China
| | - Yuqing Gu
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Li Zhang
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Shiyi Wang
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Jie Zhao
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Jing Ji
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Dahua Shi
- School of Pharmacy, Jiangsu Ocean University, Lianyungang, PR China
| | - Zhonglu You
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| |
Collapse
|
23
|
Uberti AF, Callai-Silva N, Grahl MVC, Piovesan AR, Nachtigall EG, Furini CRG, Carlini CR. Helicobacter pylori Urease: Potential Contributions to Alzheimer’s Disease. Int J Mol Sci 2022; 23:ijms23063091. [PMID: 35328512 PMCID: PMC8949269 DOI: 10.3390/ijms23063091] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 03/09/2022] [Accepted: 03/10/2022] [Indexed: 11/24/2022] Open
Abstract
Alzheimer’s disease (AD) causes dementia and memory loss in the elderly. Deposits of beta-amyloid peptide and hyperphosphorylated tau protein are present in a brain with AD. A filtrate of Helicobacter pylori’s culture was previously found to induce hyperphosphorylation of tau in vivo, suggesting that bacterial exotoxins could permeate the blood–brain barrier and directly induce tau’s phosphorylation. H. pylori, which infects ~60% of the world population and causes gastritis and gastric cancer, produces a pro-inflammatory urease (HPU). Here, the neurotoxic potential of HPU was investigated in cultured cells and in rats. SH-SY5Y neuroblastoma cells exposed to HPU (50–300 nM) produced reactive oxygen species (ROS) and had an increased [Ca2+]i. HPU-treated BV-2 microglial cells produced ROS, cytokines IL-1β and TNF-α, and showed reduced viability. Rats received daily i.p., HPU (5 µg) for 7 days. Hyperphosphorylation of tau at Ser199, Thr205 and Ser396 sites, with no alterations in total tau or GSK-3β levels, and overexpression of Iba1, a marker of microglial activation, were seen in hippocampal homogenates. HPU was not detected in the brain homogenates. Behavioral tests were performed to assess cognitive impairments. Our findings support previous data suggesting an association between infection by H. pylori and tauopathies such as AD, possibly mediated by its urease.
Collapse
Affiliation(s)
- Augusto F. Uberti
- Laboratory of Neurotoxins, Brain Institute of Rio Grande do Sul (BRAINS) and Graduate Program in Medicine and Health Sciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre CEP 90610-000, RS, Brazil; (A.F.U.); (N.C.-S.); (M.V.C.G.)
| | - Natalia Callai-Silva
- Laboratory of Neurotoxins, Brain Institute of Rio Grande do Sul (BRAINS) and Graduate Program in Medicine and Health Sciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre CEP 90610-000, RS, Brazil; (A.F.U.); (N.C.-S.); (M.V.C.G.)
| | - Matheus V. C. Grahl
- Laboratory of Neurotoxins, Brain Institute of Rio Grande do Sul (BRAINS) and Graduate Program in Medicine and Health Sciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre CEP 90610-000, RS, Brazil; (A.F.U.); (N.C.-S.); (M.V.C.G.)
| | - Angela R. Piovesan
- Center of Biotechnology, Graduate Program in Cellular and Molecular Biology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre CEP 91501-970, RS, Brazil;
| | - Eduarda G. Nachtigall
- Laboratory of Cognition and Memory Neurobiology, Brain Institute of Rio Grande do Sul (BRAINS) and Graduate Program in Biomedical Gerontology, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre CEP 90610-000, RS, Brazil; (E.G.N.); (C.R.G.F.)
| | - Cristiane R. G. Furini
- Laboratory of Cognition and Memory Neurobiology, Brain Institute of Rio Grande do Sul (BRAINS) and Graduate Program in Biomedical Gerontology, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre CEP 90610-000, RS, Brazil; (E.G.N.); (C.R.G.F.)
| | - Celia Regina Carlini
- Laboratory of Neurotoxins, Brain Institute of Rio Grande do Sul (BRAINS) and Graduate Program in Medicine and Health Sciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre CEP 90610-000, RS, Brazil; (A.F.U.); (N.C.-S.); (M.V.C.G.)
- Correspondence: ; Tel.: +55-51-3320-5986
| |
Collapse
|
24
|
Sohrabi M, Nazari Montazer M, Farid SM, Tanideh N, Dianatpour M, Moazzam A, Zomorodian K, Yazdanpanah S, Asadi M, Hosseini S, Biglar M, Larijani B, Amanlou M, Barazandeh Tehrani M, Iraji A, Mahdavi M. Design and synthesis of novel nitrothiazolacetamide conjugated to different thioquinazolinone derivatives as anti-urease agents. Sci Rep 2022; 12:2003. [PMID: 35132095 PMCID: PMC8821706 DOI: 10.1038/s41598-022-05736-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 01/11/2022] [Indexed: 01/07/2023] Open
Abstract
The present article describes the design, synthesis, in vitro urease inhibition, and in silico molecular docking studies of a novel series of nitrothiazolacetamide conjugated to different thioquinazolinones. Fourteen nitrothiazolacetamide bearing thioquinazolinones derivatives (8a-n) were synthesized through the reaction of isatoic anhydride with different amine, followed by reaction with carbon disulfide and KOH in ethanol. The intermediates were then converted into final products by treating them with 2-chloro-N-(5-nitrothiazol-2-yl)acetamide in DMF. All derivatives were then characterized through different spectroscopic techniques (1H, 13C-NMR, MS, and FTIR). In vitro screening of these molecules against urease demonstrated the potent urease inhibitory potential of derivatives with IC50 values ranging between 2.22 ± 0.09 and 8.43 ± 0.61 μM when compared with the standard thiourea (IC50 = 22.50 ± 0.44 μM). Compound 8h as the most potent derivative exhibited an uncompetitive inhibition pattern against urease in the kinetic study. The high anti-ureolytic activity of 8h was confirmed against two urease-positive microorganisms. According to molecular docking study, 8h exhibited several hydrophobic interactions with Lys10, Leu11, Met44, Ala47, Ala85, Phe87, and Pro88 residues plus two hydrogen bound interactions with Thr86. According to the in silico assessment, the ADME-Toxicity and drug-likeness profile of synthesized compounds were in the acceptable range.
Collapse
Affiliation(s)
- Marzieh Sohrabi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Nazari Montazer
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Sara Moghadam Farid
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Nader Tanideh
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mehdi Dianatpour
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Moazzam
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Kamiar Zomorodian
- Department of Medical Mycology and Parasitology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Somayeh Yazdanpanah
- Department of Medical Mycology and Parasitology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mehdi Asadi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Samanesadat Hosseini
- Department of Pharmaceutical Chemistry, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahmood Biglar
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Massoud Amanlou
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Maliheh Barazandeh Tehrani
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Aida Iraji
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
- Central Research Laboratory, Shiraz University of Medical Sciences, Shiraz, Iran.
- Liosa Pharmed Parseh Company, Shiraz, Iran.
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
25
|
Kuo YC, Yu LY, Wang HY, Chen MJ, Wu MS, Liu CJ, Lin YC, Shih SC, Hu KC. Effects of Helicobacter pylori infection in gastrointestinal tract malignant diseases: From the oral cavity to rectum. World J Gastrointest Oncol 2022; 14:55-74. [PMID: 35116103 PMCID: PMC8790410 DOI: 10.4251/wjgo.v14.i1.55] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 05/03/2021] [Accepted: 12/10/2021] [Indexed: 02/06/2023] Open
Abstract
Helicobacter pylori (H. pylori) has infected approximately fifty percent of humans for a long period of time. However, improvements in the public health environment have led to a decreased chance of H. pylori infection. However, a high infection rate is noted in populations with a high incidence rate of gastric cancer (GC). The worldwide fraction of GC attributable to H. pylori is greater than 85%, and a high H. pylori prevalence is noted in gastric mucosa-associated lymphoid tissue lymphoma patients. These results indicate that the majority of GC cases can be prevented if H. pylori infection is eliminated. Because H. pylori exhibits oral-oral or fecal-oral transmission, the relationship between this microorganism and other digestive tract malignant diseases has also attracted attention. This review article provides an overview of H. pylori and the condition of the whole gastrointestinal tract environment to further understand the correlation between the pathogen and the host, thus allowing improved realization of disease presentation.
Collapse
Affiliation(s)
- Yang-Che Kuo
- Division of Gastroenterology, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 10449, Taiwan
| | - Lo-Yip Yu
- Department of Internal Medicine, Healthy Evaluation Center, Mackay Memorial Hospital, Taipei 10449, Taiwan
| | - Horng-Yuan Wang
- Division of Gastroenterology, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 10449, Taiwan
| | - Ming-Jen Chen
- Division of Gastroenterology, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 10449, Taiwan
| | - Ming-Shiang Wu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei 10051, Taiwan
| | - Chun-Jen Liu
- Department of Internal Medicine, Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei 10051, Taiwan
| | - Ying-Chun Lin
- Department of Anesthesia, MacKay Memorial Hospital, Taipei 10449, Taiwan
| | - Shou-Chuan Shih
- Division of Gastroenterology, Department of Internal Medicine, Health Evaluate Center, Mackay Memorial Hospital, Taipei 10449, Taiwan
| | - Kuang-Chun Hu
- Department of Internal Medicine, Healthy Evaluation Center, Mackay Memorial Hospital, MacKay Junior College of Medicine, Nursing, and Management, Taipei 10038, Taiwan
| |
Collapse
|
26
|
Cheok YY, Lee CYQ, Cheong HC, Vadivelu J, Looi CY, Abdullah S, Wong WF. An Overview of Helicobacter pylori Survival Tactics in the Hostile Human Stomach Environment. Microorganisms 2021; 9:microorganisms9122502. [PMID: 34946105 PMCID: PMC8705132 DOI: 10.3390/microorganisms9122502] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 11/28/2021] [Accepted: 11/29/2021] [Indexed: 12/17/2022] Open
Abstract
Helicobacter pylori is well established as a causative agent for gastritis, peptic ulcer, and gastric cancer. Armed with various inimitable virulence factors, this Gram-negative bacterium is one of few microorganisms that is capable of circumventing the harsh environment of the stomach. The unique spiral structure, flagella, and outer membrane proteins accelerate H. pylori movement within the viscous gastric mucosal layers while facilitating its attachment to the epithelial cells. Furthermore, secretion of urease from H. pylori eases the acidic pH within the stomach, thus creating a niche for bacteria survival and replication. Upon gaining a foothold in the gastric epithelial lining, bacterial protein CagA is injected into host cells through a type IV secretion system (T4SS), which together with VacA, damage the gastric epithelial cells. H. pylori does not only establishes colonization in the stomach, but also manipulates the host immune system to permit long-term persistence. Prolonged H. pylori infection causes chronic inflammation that precedes gastric cancer. The current review provides a brief outlook on H. pylori survival tactics, bacterial-host interaction and their importance in therapeutic intervention as well as vaccine development.
Collapse
Affiliation(s)
- Yi Ying Cheok
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; (Y.Y.C.); (C.Y.Q.L.); (H.C.C.); (J.V.)
| | - Chalystha Yie Qin Lee
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; (Y.Y.C.); (C.Y.Q.L.); (H.C.C.); (J.V.)
| | - Heng Choon Cheong
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; (Y.Y.C.); (C.Y.Q.L.); (H.C.C.); (J.V.)
| | - Jamuna Vadivelu
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; (Y.Y.C.); (C.Y.Q.L.); (H.C.C.); (J.V.)
| | - Chung Yeng Looi
- School of Biosciences, Faculty of Health & Medical Sciences, Taylor’s University, Subang Jaya 47500, Malaysia;
| | - Suhailah Abdullah
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia;
| | - Won Fen Wong
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; (Y.Y.C.); (C.Y.Q.L.); (H.C.C.); (J.V.)
- Correspondence:
| |
Collapse
|
27
|
Tamura T, Wakai K, Lin Y, Tamakoshi A, Utada M, Ozasa K, Sugawara Y, Tsuji I, Ono A, Sawada N, Tsugane S, Ito H, Nagata C, Kitamura T, Naito M, Tanaka K, Shimazu T, Mizoue T, Matsuo K, Inoue M. Alcohol intake and stomach cancer risk in Japan: A pooled analysis of six cohort studies. Cancer Sci 2021; 113:261-276. [PMID: 34689390 PMCID: PMC8748227 DOI: 10.1111/cas.15172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 10/07/2021] [Accepted: 10/12/2021] [Indexed: 12/24/2022] Open
Abstract
The association between alcohol intake and stomach cancer risk remains controversial. We undertook a pooled analysis of data from six large-scale Japanese cohort studies with 256 478 participants on this topic. Alcohol intake as ethanol was estimated using a validated questionnaire. The participants were followed for incidence of stomach cancer. We calculated study-specific hazard ratios (HRs) and 95% confidence intervals (CIs) for stomach cancer according to alcohol intake using a Cox regression model. Summary HRs were estimated by pooling the study-specific HRs using a random-effects model. During 4 265 551 person-years of follow-up, 8586 stomach cancer cases were identified. In men, the multivariate-adjusted HRs (95% CIs) of stomach cancer were 1.00 (0.87-1.15) for occasional drinkers, and 1.00 (0.91-1.11) for <23 g/d, 1.09 (1.01-1.18) for 23 to <46 g/d, 1.18 (1.09-1.29) for 46 to <69 g/d, 1.21 (1.05-1.39) for 69 to <92 g/d, and 1.29 (1.11-1.51) for ≥92 g/d ethanol in regular drinkers compared with nondrinkers. In women, the multivariate-adjusted HRs were 0.93 (0.80-1.08) for occasional drinkers, and 0.85 (0.74-0.99) for <23 g/d, and 1.22 (0.98-1.53) for ≥23 g/d in regular drinkers compared with nondrinkers. The HRs for proximal and distal cancer in drinkers vs nondrinkers were 1.69 (1.15-2.47) and 1.24 (0.99-1.55) for ≥92 g/d in men, and 1.60 (0.76-3.37) and 1.18 (0.88-1.57) for ≥23 g/d in women, respectively. Alcohol intake increased stomach cancer risk in men, and heavy drinkers showed a greater point estimate of risk for proximal cancer than for distal cancer.
Collapse
Affiliation(s)
- Takashi Tamura
- Department of Preventive Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kenji Wakai
- Department of Preventive Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yingsong Lin
- Department of Public Health, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Akiko Tamakoshi
- Department of Public Health, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Mai Utada
- Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan
| | - Kotaro Ozasa
- Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan
| | - Yumi Sugawara
- Division of Epidemiology, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Ichiro Tsuji
- Division of Epidemiology, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Ayami Ono
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, Tokyo, Japan
| | - Norie Sawada
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, Tokyo, Japan
| | - Shoichiro Tsugane
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, Tokyo, Japan
| | - Hidemi Ito
- Division of Cancer Information and Control, Aichi Cancer Center Research Institute, Nagoya, Japan.,Division of Descriptive Cancer Epidemiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Tetsuhisa Kitamura
- Department of Environmental Medicine and Population Sciences, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Mariko Naito
- Department of Oral Epidemiology, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Keitaro Tanaka
- Department of Preventive Medicine, Faculty of Medicine, Saga University, Saga, Japan
| | - Taichi Shimazu
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, Tokyo, Japan
| | - Tetsuya Mizoue
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Keitaro Matsuo
- Division of Cancer Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya, Japan.,Department of Cancer Epidemiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mamami Inoue
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, Tokyo, Japan
| | | |
Collapse
|
28
|
Glycosaminoglycan biosynthesis pathway in host genome is associated with Helicobacter pylori infection. Sci Rep 2021; 11:18235. [PMID: 34521966 PMCID: PMC8440747 DOI: 10.1038/s41598-021-97790-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 08/31/2021] [Indexed: 02/08/2023] Open
Abstract
Helicobacter pylori is a causative pathogen of many gastric and extra-gastric diseases. It has infected about half of the global population. There were no genome-wide association studies (GWAS) for H. pylori infection conducted in Chinese population, who carried different and relatively homogenous strain of H. pylori. In this work, we performed SNP (single nucleotide polymorphism)-based, gene-based and pathway-based genome-wide association analyses to investigate the genetic basis of host susceptibility to H. pylori infection in 480 Chinese individuals. We also profiled the composition and function of the gut microbiota between H. pylori infection cases and controls. We found several genes and pathways associated with H. pylori infection (P < 0.05), replicated one previously reported SNP rs10004195 in TLR1 gene region (P = 0.02). We also found that glycosaminoglycan biosynthesis related pathway was associated with both onset and progression of H. pylori infection. In the gut microbiome association study, we identified 2 species, 3 genera and several pathways had differential abundance between H. pylori infected cases and controls. This paper is the first GWAS for H. pylori infection in Chinese population, and we combined the genetic and microbial data to comprehensively discuss the basis of host susceptibility to H. pylori infection.
Collapse
|
29
|
Mamidala R, Bhimathati SRS, Vema A. Discovery of Novel Dihydropyrimidine and hydroxamic acid hybrids as potent Helicobacter pylori Urease inhibitors. Bioorg Chem 2021; 114:105010. [PMID: 34102519 DOI: 10.1016/j.bioorg.2021.105010] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 05/19/2021] [Accepted: 05/20/2021] [Indexed: 11/25/2022]
Abstract
Two novel series of Dihydropyrimidine-hydroxamic acid hybrids (4a-4l and 5a-5l) were designed, synthesized and evaluated for in vitro Helicobacter pylori urease inhibition. In vitro enzyme inhibition screening led to the discovery of three potent urease inhibitors 2-[[4-(4-hydroxy phenyl)-6-oxo-1,6-dihydropyrimidine-2-yl]-amino]-N-hydroxy acetamide (4g), 2-[[4-(4-chloro phenyl)-6-oxo-1,6-dihydropyrimidine-2-yl]-amino]-N-hydroxy acetamide (4b) and 3-[[4-(3-methoxy phenyl)-6-oxo-1,6-dihydropyrimidine-2-yl]-amino]-N-hydroxy propanamide (5l). Compound 4g showed excellent urease inhibition with IC50 value of 14 ± 1 nM, indicated by its strong interactions with both metallic Ni++ ions, Gly279, His221, Ala365, Asp362, Asn168, Arg338 and His322 residues of the active site of urease. Further, compounds 4b and 5l displayed very good activity with IC50 value of 0.082 ± 0.004 µM and 0.14 ± 0.013 µM respectively compared to standard Acetohydroxamic acid (IC50 - 27.4 ± 1.2 µM). Kinetic studies revealed that a mixed inhibition with both competitive and non-competitive aspects is involved in the urease inhibition mechanism. The in vitro urease inhibition results were supported by molecular docking studies. Collectively, this study indicates that 4g could be considered as promising lead molecule that can be further developed as a potent drug molecule for the treatment of Helicobacter pylori caused gastritis for further studies.
Collapse
Affiliation(s)
- Ravinder Mamidala
- Department of Medicinal Chemistry, St. Peter's Institute of Pharmaceutical Sciences, Hanamkonda, Warangal, Telangana 506001, India; Department of Pharmaceutical Chemistry, Institute of Science and Technology, Jawaharlal Nehru Technological University, Hyderabad, Telangana 500085, India
| | - Solomon Raj S Bhimathati
- Department of Pharmacology, Gland Institute of Pharmaceutical Sciences, Medak, Telangana 502220, India
| | - Aparna Vema
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad 500046, India.
| |
Collapse
|
30
|
Khan MU, Aslam M, Shahzad SA, Khan ZA, Khan NA, Ali M, Naz S, Rahman J, Farooq U. Design and synthesis of thiobarbituric acid analogues as potent urease inhibitors. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.129959] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
31
|
In vivo activation of pH-responsive oxidase-like graphitic nanozymes for selective killing of Helicobacter pylori. Nat Commun 2021; 12:2002. [PMID: 33790299 PMCID: PMC8012368 DOI: 10.1038/s41467-021-22286-x] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 02/26/2021] [Indexed: 12/19/2022] Open
Abstract
Helicobacter pylori infection is a major etiological factor in gastric diseases. However, clinical antibiotic therapy for H. pylori is limited by continuously decreased therapeutic efficacy and side effects to symbiotic bacteria. Herein, we develop an in vivo activatable pH-responsive graphitic nanozyme, PtCo@Graphene (PtCo@G), for selective treatment of H. pylori. Such nanozymes can resist gastric acid corrosion, exhibit oxidase-like activity to stably generate reactive oxygen species only in acidic gastric milieu and demonstrate superior selective bactericidal property. C18-PEGn-Benzeneboronic acid molecules are modified on PtCo@G, improving its targeting capability. Under acidic gastric pH, graphitic nanozymes show notable bactericidal activity toward H. pylori, while no bacterial killing is observed under intestinal conditions. In mouse model, high antibacterial capability toward H. pylori and negligible side effects toward normal tissues and symbiotic bacteria are achieved. Graphitic nanozyme displays the desired enzyme-like activities at corresponding physiological sites and may address critical issues in clinical treatment of H. pylori infections. Helicobacter pylori is a major cause of gastric diseases, but the standard therapy is limited by continuously decreased therapeutic efficacy and side effects to symbiotic bacteria. Here, the authors develop a pH-responsive graphitic nanozyme that is active under low pH gastric conditions, but inactive in intestines, for selective treatment of H. pylori infections.
Collapse
|
32
|
Durán C, Ciucci S, Palladini A, Ijaz UZ, Zippo AG, Sterbini FP, Masucci L, Cammarota G, Ianiro G, Spuul P, Schroeder M, Grill SW, Parsons BN, Pritchard DM, Posteraro B, Sanguinetti M, Gasbarrini G, Gasbarrini A, Cannistraci CV. Nonlinear machine learning pattern recognition and bacteria-metabolite multilayer network analysis of perturbed gastric microbiome. Nat Commun 2021; 12:1926. [PMID: 33771992 PMCID: PMC7997970 DOI: 10.1038/s41467-021-22135-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 02/24/2021] [Indexed: 12/11/2022] Open
Abstract
The stomach is inhabited by diverse microbial communities, co-existing in a dynamic balance. Long-term use of drugs such as proton pump inhibitors (PPIs), or bacterial infection such as Helicobacter pylori, cause significant microbial alterations. Yet, studies revealing how the commensal bacteria re-organize, due to these perturbations of the gastric environment, are in early phase and rely principally on linear techniques for multivariate analysis. Here we disclose the importance of complementing linear dimensionality reduction techniques with nonlinear ones to unveil hidden patterns that remain unseen by linear embedding. Then, we prove the advantages to complete multivariate pattern analysis with differential network analysis, to reveal mechanisms of bacterial network re-organizations which emerge from perturbations induced by a medical treatment (PPIs) or an infectious state (H. pylori). Finally, we show how to build bacteria-metabolite multilayer networks that can deepen our understanding of the metabolite pathways significantly associated to the perturbed microbial communities.
Collapse
Affiliation(s)
- Claudio Durán
- Biomedical Cybernetics Group, Biotechnology Center (BIOTEC), Center for Molecular and Cellular Bioengineering (CMCB), Center for Systems Biology Dresden (CSBD), Cluster of Excellence Physics of Life (PoL), Department of Physics, Technische Universität Dresden, Dresden, Germany
| | - Sara Ciucci
- Biomedical Cybernetics Group, Biotechnology Center (BIOTEC), Center for Molecular and Cellular Bioengineering (CMCB), Center for Systems Biology Dresden (CSBD), Cluster of Excellence Physics of Life (PoL), Department of Physics, Technische Universität Dresden, Dresden, Germany
| | - Alessandra Palladini
- Biomedical Cybernetics Group, Biotechnology Center (BIOTEC), Center for Molecular and Cellular Bioengineering (CMCB), Center for Systems Biology Dresden (CSBD), Cluster of Excellence Physics of Life (PoL), Department of Physics, Technische Universität Dresden, Dresden, Germany
- Paul Langerhans Institute Dresden, Helmholtz Zentrum Munchen, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Umer Z Ijaz
- Department of Infrastructure and Environment University of Glasgow, School of Engineering, Glasgow, UK
| | - Antonio G Zippo
- Institute of Neuroscience, Consiglio Nazionale delle Ricerche, Milan, Italy
| | | | - Luca Masucci
- Institute of Microbiology, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Giovanni Cammarota
- Internal Medicine and Gastroenterology Unit, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Gianluca Ianiro
- Internal Medicine and Gastroenterology Unit, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Pirjo Spuul
- Department of Chemistry and Biotechnology, Division of Gene Technology, Tallinn University of Technology, Tallinn, 12618, Estonia
| | - Michael Schroeder
- Biotechnology Center (BIOTEC), Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Dresden, Germany
| | - Stephan W Grill
- Biotechnology Center (BIOTEC), Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Dresden, Germany
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Bryony N Parsons
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - D Mark Pritchard
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
- Department of Gastroenterology, Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, UK
| | - Brunella Posteraro
- Institute of Microbiology, Università Cattolica del Sacro Cuore, Rome, Italy
| | | | - Giovanni Gasbarrini
- Internal Medicine and Gastroenterology Unit, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Antonio Gasbarrini
- Internal Medicine and Gastroenterology Unit, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Carlo Vittorio Cannistraci
- Biomedical Cybernetics Group, Biotechnology Center (BIOTEC), Center for Molecular and Cellular Bioengineering (CMCB), Center for Systems Biology Dresden (CSBD), Cluster of Excellence Physics of Life (PoL), Department of Physics, Technische Universität Dresden, Dresden, Germany.
- Center for Complex Network Intelligence (CCNI) at Tsinghua Laboratory of Brain and Intelligence (THBI), Department of Biomedical Engineering, Tsinghua University, Beijing, China.
| |
Collapse
|
33
|
Schimmel P, Kleinjans L, Bongers RS, Knol J, Belzer C. Breast milk urea as a nitrogen source for urease positive Bifidobacterium infantis. FEMS Microbiol Ecol 2021; 97:fiab019. [PMID: 33538807 PMCID: PMC7947585 DOI: 10.1093/femsec/fiab019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 02/03/2021] [Indexed: 02/06/2023] Open
Abstract
Human milk stimulates a health-promoting gut microbiome in infants. However, it is unclear how the microbiota salvages and processes its required nitrogen from breast milk. Human milk nitrogen sources such as urea could contribute to the composition of this early life microbiome. Urea is abundant in human milk, representing a large part of the non-protein nitrogen (NPN). We found that B. longum subsp. infantis (ATCC17930) can use urea as a main source of nitrogen for growth in synthetic medium and enzyme activity was induced by the presence of urea in the medium. We furthermore confirmed the expression of both urease protein subunits and accessory proteins of B. longum subsp. infantis through proteomics. To the same end, metagenome data were mined for urease-related genes. It was found that the breastfed infant's microbiome possessed more urease-related genes than formula fed infants (51.4:22.1; 2.3-fold increase). Bifidobacteria provided a total of 106 of urease subunit alpha alignments, found only in breastfed infants. These experiments show how an important gut commensal that colonizes the infant intestine can metabolize urea. The results presented herein further indicate how dietary nitrogen can determine bacterial metabolism in the neonate gut and shape the overall microbiome.
Collapse
Affiliation(s)
- Patrick Schimmel
- Laboratory of Microbiology, Wageningen University & Research, Stippeneng 4, Helix Building, 6708 WE, Wageningen, the Netherlands
| | - Lennart Kleinjans
- Laboratory of Microbiology, Wageningen University & Research, Stippeneng 4, Helix Building, 6708 WE, Wageningen, the Netherlands
| | - Roger S Bongers
- Danone Nutricia Research, Uppsalalaan 12, 3584CT Utrecht, the Netherlands
| | - Jan Knol
- Laboratory of Microbiology, Wageningen University & Research, Stippeneng 4, Helix Building, 6708 WE, Wageningen, the Netherlands
- Danone Nutricia Research, Uppsalalaan 12, 3584CT Utrecht, the Netherlands
| | - Clara Belzer
- Laboratory of Microbiology, Wageningen University & Research, Stippeneng 4, Helix Building, 6708 WE, Wageningen, the Netherlands
| |
Collapse
|
34
|
Ali M, Bukhari SM, Zaidi A, Khan FA, Rashid U, Tahir N, Rabbani B, Farooq U. Inhibition Profiling of Urease and Carbonic Anhydrase II by High- Throughput Screening and Molecular Docking Studies of Structurally Diverse Organic Compounds. LETT DRUG DES DISCOV 2021. [DOI: 10.2174/1570180817999201005200505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background::
Structurally diverse organic compounds and available drugs were screened
against urease and carbonic anhydrase II in a formulation acceptable for high-throughput screening.
Objective:
The study was conducted to find out potential inhibitors of urease and carbonic anhydrase
II.
Methods::
Quantification of the possible HITs was carried out by determining their IC50 values.
Results:
The results of several screened compounds, including derivatives of oxadiazole, coumarins,
chromane-2, 4-diones and metal complexes of cysteine-omeprazole showed promising inhibitory
activities with IC50 ranging from 47 μM to 412 μM against the urease. The interactions of active
compounds with active sites of enzymes were investigated through molecular docking studies
which revealed that (R)-1-(4-amino-4-(5-(thiophen-2-yl)-1,3,4-oxadiazol-2-yl) butyl) guanidine
possessing IC50 of 47 μM interacts with one of the nickel metal atoms of urease besides further
interactions as predictable hydrogen bonds with KCX490, Asp633, His492, His407 and His409
along with Ala440 and 636. Bi-ligand metal complexes of 4-aminoantipyrine based Schiff bases
showed activation of urease with AC50 ranging from 68 μM to 112 μM. Almost 21 compounds with
varying functional groups including pyrimidines, oxadiazoles, imidazoles, hydrazides and tin based
compounds were active carbonic anhydrase II inhibitors presenting 98 μM to 390 μM IC50 values.
Several N-substituted sulfonamide derivatives were inactive against carbonic anhydrase II.
Conclusion::
Among all the screened compounds, the highly active inhibitor of carbonic anhydrase
II was (4-(3-hydroxyphenyl)-6-phenyl-2-thioxo-1,2,3,4-tetrahydropyrimidin-5-yl)phenyl) methanone
with IC50 of 98.0 μM. This particular compound showed metallic interaction with Zn ion of
carbonic anhydrase II through the hydroxyl group of the phenyl ring.
Collapse
Affiliation(s)
- Majid Ali
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Syed Majid Bukhari
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Asma Zaidi
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Farhan A. Khan
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Umer Rashid
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Neelum Tahir
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Baseerat Rabbani
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Umar Farooq
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| |
Collapse
|
35
|
Holmes L, Rios J, Berice B, Benson J, Bafford N, Parson K, Halloran D. Predictive Effect of Helicobacter pylori in Gastric Carcinoma Development: Systematic Review and Quantitative Evidence Synthesis. MEDICINES (BASEL, SWITZERLAND) 2021; 8:medicines8010001. [PMID: 33466356 PMCID: PMC7824775 DOI: 10.3390/medicines8010001] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/31/2020] [Accepted: 12/31/2020] [Indexed: 12/11/2022]
Abstract
Helicobacter pylori (H. pylori) is a bacterial pathogen implicated in gastritis, gastric ulceration, and gastric carcinoma. This study aimed to synthesize literature in providing evidence on the causative role of H. pylori in gastric carcinoma development. This study is based on assessing public literature using an applied meta-analysis, namely, quantitative evidence synthesis (QES). The analytic procedure uses DerSimonian-Laird, including assessing heterogeneity. The QES also utilizes meta-regression and the environmental effect associated with H. pylori in gastric cancer development. Eighteen studies are included in the QES. There is increased prevalence of H. pylori exposure among the cases. The heterogeneity between the CES and individual effect sizes is also significant. Despite controlling for the confoundings, there is increased exposure to H. pylori among the gastric cancer cases, regardless of the differences in the geographic location. H. pylori in this synthesized literature illustrates the contributory role of this microbe in gastric carcinoma. Additionally, regardless of geographic locale, namely, South Korea or Spain, H. pylori is implicated in gastric cancer development.
Collapse
Affiliation(s)
- Laurens Holmes
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
- Department of Biological Sciences, University of Delaware, Newark, DE 19716, USA
- Correspondence: ; Tel.: +1-(302)-298-7741
| | - Jasmine Rios
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
- History of Science and Medicine Department, Yale University, New Haven, CT 06511, USA
| | - Betyna Berice
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
- Master of Public Health, Dr. Kiran C. Patel College of Osteopathic Medicine, Nova Southeastern University, Davie, FL 33328, USA
| | - Jacqueline Benson
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
- Master of Public Health Program, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Nastocia Bafford
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
| | - Kadedrah Parson
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
| | - Daniel Halloran
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
- Department of Biological Sciences, University of Delaware, Newark, DE 19716, USA
| |
Collapse
|
36
|
Synthesis, urease inhibition screening and molecular docking studies of piperonal based imine derivatives. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02651-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
37
|
Eisenbart SK, Alzheimer M, Pernitzsch SR, Dietrich S, Stahl S, Sharma CM. A Repeat-Associated Small RNA Controls the Major Virulence Factors of Helicobacter pylori. Mol Cell 2020; 80:210-226.e7. [PMID: 33002424 DOI: 10.1016/j.molcel.2020.09.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 07/29/2020] [Accepted: 09/04/2020] [Indexed: 12/12/2022]
Abstract
Many bacterial pathogens regulate their virulence genes via phase variation, whereby length-variable simple sequence repeats control the transcription or coding potential of those genes. Here, we have exploited this relationship between DNA structure and physiological function to discover a globally acting small RNA (sRNA) regulator of virulence in the gastric pathogen Helicobacter pylori. Our study reports the first sRNA whose expression is affected by a variable thymine (T) stretch in its promoter. We show the sRNA post-transcriptionally represses multiple major pathogenicity factors of H. pylori, including CagA and VacA, by base pairing to their mRNAs. We further demonstrate transcription of the sRNA is regulated by the nickel-responsive transcriptional regulator NikR (thus named NikS for nickel-regulated sRNA), thereby linking virulence factor regulation to nickel concentrations. Using in-vitro infection experiments, we demonstrate NikS affects host cell internalization and epithelial barrier disruption. Together, our results show NikS is a phase-variable, post-transcriptional global regulator of virulence properties in H. pylori.
Collapse
Affiliation(s)
- Sara K Eisenbart
- Chair of Molecular Infection Biology II, Institute of Molecular Infection Biology (IMIB), University of Würzburg, 97080 Würzburg, Germany
| | - Mona Alzheimer
- Chair of Molecular Infection Biology II, Institute of Molecular Infection Biology (IMIB), University of Würzburg, 97080 Würzburg, Germany
| | - Sandy R Pernitzsch
- Chair of Molecular Infection Biology II, Institute of Molecular Infection Biology (IMIB), University of Würzburg, 97080 Würzburg, Germany
| | - Sascha Dietrich
- Core Unit Systems Medicine, Interdisciplinary Center for Clinical Research (IZKF) of the University Hospital Würzburg, 97080 Würzburg, Germany
| | - Stephanie Stahl
- Chair of Molecular Infection Biology II, Institute of Molecular Infection Biology (IMIB), University of Würzburg, 97080 Würzburg, Germany
| | - Cynthia M Sharma
- Chair of Molecular Infection Biology II, Institute of Molecular Infection Biology (IMIB), University of Würzburg, 97080 Würzburg, Germany.
| |
Collapse
|
38
|
Sonkar C, Verma T, Chatterji D, Jain AK, Jha HC. Status of kinases in Epstein-Barr virus and Helicobacter pylori Coinfection in gastric Cancer cells. BMC Cancer 2020; 20:925. [PMID: 32993565 PMCID: PMC7523314 DOI: 10.1186/s12885-020-07377-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 09/03/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Helicobacter pylori (H. pylori) and Epstein - Barr virus (EBV) plays a significant role in aggressive gastric cancer (GC). The investigation of genes associated with these pathogens and host kinases may be essential to understand the early and dynamic progression of GC. AIM The study aimed to demonstrate the coinfection of EBV and H. pylori in the AGS cells through morphological changes, expression of the kinase and the probable apoptotic pathways. METHODS Genomic DNA isolation of H. pylori and its characterization from clinical samples were performed. RT-qPCR of kinases was applied to scrutinize the gene expression of kinases in co-infected GC in a direct and indirect (separated through insert size 0.45 μm) H. pylori infection set up. Morphological changes in co-infected GC were quantified by measuring the tapering ends of gastric epithelial cells. Gene expression profiling of apoptotic genes was assessed through RT-qPCR. RESULTS An interleukin-2-inducible T-cell kinase (ITK) showed significant upregulation with indirect H. pylori infection. Moreover, Ephrin type-B receptor six precursors (EPHB6) and Tyrosine-protein kinase Fyn (FYN) showed significant upregulation with direct coinfection. The tapering ends in AGS cells were found to be extended after 12 h. A total of 24 kinase genes were selected, out of which EPHB6, ITK, FYN, and TYK2 showed high expression as early as 12 h. These kinases may lead to rapid morphological changes in co-infected gastric cells. Likewise, apoptotic gene expression such as APAF-1 and Bcl2 family genes such as BAD, BID, BIK, BIM, BAX, AND BAK were significantly down-regulated in co-infected AGS cells. CONCLUSION All the experiments were performed with novel isolates of H. pylori isolated from central India, for the functional assessment of GC. The effect of coinfection with EBV was more profoundly observed on morphological changes in AGS cells at 12 h as quantified by measuring the tapering of ends. This study also identifies the kinase and apoptotic genes modulated in co-infected cells, through direct and indirect approaches. We report that ITK, EPHB6, TYK2, FYN kinase are enhanced, whereas apoptotic genes such as APAF-1, BIK, FASL, BAX are significantly down-regulated in AGS cells coinfected with EBV and H. pylori.
Collapse
Affiliation(s)
- Charu Sonkar
- The Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Room no. 302, School Building, IIT Indore, Khandwa Road, Simrol, Indore, 453552, India
| | - Tarun Verma
- The Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Room no. 302, School Building, IIT Indore, Khandwa Road, Simrol, Indore, 453552, India
| | - Debi Chatterji
- Choithram Hospital and Research Centre Indore, Indore, Madhya Pradesh, India
| | - Ajay Kumar Jain
- Choithram Hospital and Research Centre Indore, Indore, Madhya Pradesh, India
| | - Hem Chandra Jha
- The Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Room no. 302, School Building, IIT Indore, Khandwa Road, Simrol, Indore, 453552, India.
| |
Collapse
|
39
|
Kleine AD, Reuss B. Interactions of Antibodies to the Gram-Negative Gastric Bacterium Helicobacter pylori with the Synaptic Calcium Sensor Synaptotagmin 5, Correlate to Impaired Vesicle Recycling in SiMa Human Neuroblastoma Cells. J Mol Neurosci 2020; 71:481-505. [PMID: 32860155 PMCID: PMC7851109 DOI: 10.1007/s12031-020-01670-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 07/15/2020] [Indexed: 11/29/2022]
Abstract
Due to molecular mimicry, maternal antibacterial antibodies are suspected to promote neurodevelopmental changes in the offspring that finally can cause disorders like autism and schizophrenia. Using a human first trimester prenatal brain multiprotein array (MPA), we demonstrate here that antibodies to the digestive tract bacteria Helicobacter pylori (α-HPy) and Campylobacter jejuni (α-CJe) interact with different synaptic proteins, including the calcium sensor synaptotagmin 5 (Syt5). Interactions of both antisera with Syt5 were confirmed by Western blot with a HEK293-cells overexpression lysate of this protein. Immunofluorescence and Western blotting revealed SiMa cells to express Syt5, which also co-migrated with a band/spot labeled by either α-HPy or α-CJe. Functionally, a 12-h pretreatment of SiMa cells with 10 μg/ml of either α-HPy or α-CJe resulted in a significant reduction of acetylcholine(ACh)-dependent calcium signals as compared to controls. Also ACh-dependent vesicle recycling was significantly reduced in cells pretreated with either α-HPy or α-CJe. Similar effects were observed upon pretreatment of SiMa cells with Syt5-specific antibodies. In conclusion, the present study supports the view that prenatal maternal antibacterial immune responses towards HPy and by this to Syt5 are able to cause functional changes, which in the end might contribute also to neurodevelopmental disorders.
Collapse
Affiliation(s)
- Aaron David Kleine
- Institute for Neuroanatomy, University Medicine Göttingen Kreuzbergring 36, 37075, Göttingen, Federal Republic of Germany
| | - Bernhard Reuss
- Institute for Neuroanatomy, University Medicine Göttingen Kreuzbergring 36, 37075, Göttingen, Federal Republic of Germany.
| |
Collapse
|
40
|
Song H, Dharmasena MN, Wang C, Shaw GX, Cherry S, Tropea JE, Jin DJ, Ji X. Structure and activity of PPX/GppA homologs from Escherichia coli and Helicobacter pylori. FEBS J 2020; 287:1865-1885. [PMID: 31679177 PMCID: PMC8189163 DOI: 10.1111/febs.15120] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/22/2019] [Accepted: 11/01/2019] [Indexed: 01/12/2023]
Abstract
Rapid adaptation to environmental changes is crucial for bacterial survival. Almost all bacteria possess a conserved stringent response system to prompt transcriptional and metabolic responses toward stress. The adaptive process relies on alarmones, guanosine pentaphosphate (pppGpp), and tetraphosphate (ppGpp), to regulate global gene expression. The ppGpp is more potent than pppGpp in the regulatory activity, and pppGpp phosphohydrolase (GppA) plays a key role in (p)ppGpp homeostasis. Sharing a similar domain structure, GppA is indistinguishable from exopolyphosphatase (PPX), which mediates the metabolism of cellular inorganic polyphosphate. Here, our phylogenetic analysis of PPX/GppA homologs in bacteria shows a wide distribution with several distinct subfamilies, and our structural and functional analysis of Escherichia coli GppA and Helicobacter pylori PPX/GppA reveals unique properties of each homolog. These results explain how each homolog possesses its distinct functionality.
Collapse
Affiliation(s)
- He Song
- Macromolecular Crystallography Laboratory, National Cancer Institute, Frederick, MD, USA
| | | | - Chao Wang
- Macromolecular Crystallography Laboratory, National Cancer Institute, Frederick, MD, USA
| | - Gary X Shaw
- Macromolecular Crystallography Laboratory, National Cancer Institute, Frederick, MD, USA
| | - Scott Cherry
- Macromolecular Crystallography Laboratory, National Cancer Institute, Frederick, MD, USA
| | - Joseph E Tropea
- Macromolecular Crystallography Laboratory, National Cancer Institute, Frederick, MD, USA
| | - Ding J Jin
- RNA Biology Laboratory, National Cancer Institute, Frederick, MD, USA
| | - Xinhua Ji
- Macromolecular Crystallography Laboratory, National Cancer Institute, Frederick, MD, USA
| |
Collapse
|
41
|
Silwal P, Kim YS, Basu J, Jo EK. The roles of microRNAs in regulation of autophagy during bacterial infection. Semin Cell Dev Biol 2020; 101:51-58. [DOI: 10.1016/j.semcdb.2019.07.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 05/30/2019] [Accepted: 07/15/2019] [Indexed: 02/07/2023]
|
42
|
The evolution of spherical cell shape; progress and perspective. Biochem Soc Trans 2020; 47:1621-1634. [PMID: 31829405 PMCID: PMC6925525 DOI: 10.1042/bst20180634] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 11/06/2019] [Accepted: 11/11/2019] [Indexed: 01/29/2023]
Abstract
Bacterial cell shape is a key trait governing the extracellular and intracellular factors of bacterial life. Rod-like cell shape appears to be original which implies that the cell wall, division, and rod-like shape came together in ancient bacteria and that the myriad of shapes observed in extant bacteria have evolved from this ancestral shape. In order to understand its evolution, we must first understand how this trait is actively maintained through the construction and maintenance of the peptidoglycan cell wall. The proteins that are primarily responsible for cell shape are therefore the elements of the bacterial cytoskeleton, principally FtsZ, MreB, and the penicillin-binding proteins. MreB is particularly relevant in the transition between rod-like and spherical cell shape as it is often (but not always) lost early in the process. Here we will highlight what is known of this particular transition in cell shape and how it affects fitness before giving a brief perspective on what will be required in order to progress the field of cell shape evolution from a purely mechanistic discipline to one that has the perspective to both propose and to test reasonable hypotheses regarding the ecological drivers of cell shape change.
Collapse
|
43
|
Palmitessa V, Monno R, Panarese A, Cuppone R, Burattini O, Marangi S, Curlo M, Fumarola L, Petrosillo A, Parisi A, Capozzi L, Bianco A, Lippolis A. Evaluation of Antibiotic Resistance of Helicobacter pylori Strains Isolated in Bari, Southern Italy, in 2017-2018 by Phenotypic and Genotyping Methods. Microb Drug Resist 2020; 26:909-917. [PMID: 32101078 DOI: 10.1089/mdr.2019.0262] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Objective: Helicobacter pylori antibiotic resistance is a constantly evolving process and local surveillance is warranted to guide clinicians in the choice of therapy. Materials and Methods: Antibiotic susceptibility testing was performed by E-test on 92 H. pylori strains, and resistance to clarithromycin and levofloxacin was also evaluated using a commercially available genotyping method. Results: In naïve patients the resistance to clarithromycin, levofloxacin, and metronidazole was 37.7%, 26.2%, and 16.4%, respectively, significantly lower than the percentage found in treated patients. Concomitant resistance to ≥2 antibiotics was also observed in naïve patients. The A2143G mutation of the 23S-rRNA gene was the most frequently detected, also in naïve patients. The highest minimum inhibitory concentration (MIC)50 value (256 mg/L) was associated with A2142 mutations in all the patients carrying them. For levofloxacin resistance a mutation in codon 87 was detected in 63.9% and in codon 91 in 36.1% of the H. pylori strains, without significant differences in the patients groups. A mutation in codon 87 was associated with the highest MIC50 value (32 mg/L). Conclusions: In our area, a high prevalence of H. pylori primary resistance was detected; these rates were higher in patients who had experienced failure of several courses of therapy. A better knowledge of the local epidemiology of resistance, and the genotypes responsible, will improve the H. pylori eradication rates.
Collapse
Affiliation(s)
- Valeria Palmitessa
- Laboratory of Microbiology and Virology, National Institute of Gastroenterology "Saverio de Bellis," Research Hospital, Bari, Italy
| | - Rosa Monno
- Department of Basic Medical Sciences, Neurosciences and Sense Organs, University of Bari "Aldo Moro," Bari, Italy
| | - Alba Panarese
- Department of Gastroenterology, National Institute of Gastroenterology "Saverio de Bellis," Research Hospital, Bari, Italy
| | - Renato Cuppone
- Department of Gastroenterology, National Institute of Gastroenterology "Saverio de Bellis," Research Hospital, Bari, Italy
| | - Osvaldo Burattini
- Department of Gastroenterology, National Institute of Gastroenterology "Saverio de Bellis," Research Hospital, Bari, Italy
| | - Stefania Marangi
- Department of Gastroenterology, National Institute of Gastroenterology "Saverio de Bellis," Research Hospital, Bari, Italy
| | - Margherita Curlo
- Department of Gastroenterology, National Institute of Gastroenterology "Saverio de Bellis," Research Hospital, Bari, Italy
| | - Luciana Fumarola
- Department of Basic Medical Sciences, Neurosciences and Sense Organs, University of Bari "Aldo Moro," Bari, Italy
| | - Antonella Petrosillo
- Department of Basic Medical Sciences, Neurosciences and Sense Organs, University of Bari "Aldo Moro," Bari, Italy
| | - Antonio Parisi
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Sezione di Putignano, Bari, Italy
| | - Loredana Capozzi
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Sezione di Putignano, Bari, Italy
| | - Angelica Bianco
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Sezione di Putignano, Bari, Italy
| | - Antonio Lippolis
- Laboratory of Microbiology and Virology, National Institute of Gastroenterology "Saverio de Bellis," Research Hospital, Bari, Italy
| |
Collapse
|
44
|
Kataria R, Khatkar A. In-silico Designing, ADMET Analysis, Synthesis and Biological Evaluation of Novel Derivatives of Diosmin Against Urease Protein and Helicobacter pylori Bacterium. Curr Top Med Chem 2020; 19:2658-2675. [PMID: 31724503 DOI: 10.2174/1568026619666191114123452] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/20/2019] [Accepted: 10/04/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Designing drug candidates against the urease enzyme, which has been found responsible for many pathological disorders in human beings as well as in animals, was done by insilico means. METHODS Studies were carried out on a designed library of diosmin derivatives with the help of Schrodinger's maestro package of molecular docking software against a crystallographic complex of plant enzyme Jack bean urease (PDB ID: 3LA4). Best twelve derivatives of diosmin were selected for synthesis by considering their interaction energy along with docking score and were further investigated for antioxidant, urease inhibitory and Anti-H. pylori activity by in- vitro method along with ADMET analysis. RESULTS In-vitro results of series concluded compounds D2a, D2d and D7 (IC50 12.6 ± 0.002, 14.14 ± 0.001 and 15.64 ± 0.012 µM respectively in urease inhibition and 5.195 ± 0.036, 5.39 ± 0.020 and 5.64± 0.005 µM in antioxidant behavior against DPPH) were found to be significantly potent with excellent docking score -11.721, -10.795, -10.188 and binding energy -62.674, -63.352, -56.267 kJ/ mol as compared to standard drugs thiourea and acetohydroxamic acid (-3.459, -3.049 and -21.156 kJ/mol and - 17.454 kJ/mol) whereas compounds D2b, D5b, D5d and D6 were found moderate in urease inhibitory activity. CONCLUSION Selected candidates from the outcome of in-vitro urease inhibitory were further examined for anti- H. pylori activity by a well diffusion method against H. pylori bacterium (DSM 4867). Compound D2a showed good anti-H. Pylori activity with a zone of inhibition 10.00 ± 0.00 mm and MIC value 500µg/mL as compared to standard drug acetohydroxamic acid having a zone of inhibition 9.00 ± 0.50mm and MIC 1000µg/mL. In- silico studies played an important role in designing the potent ligands against urease protein as well as in explaining the binding pattern of designed and synthesized ligand within the active pocket of jack bean urease protein. ADMET studies were also carried out to check the drug similarity of designed compounds by the means of quikprop module of molecular docking software. Hence, the present investigation studies will provide a new vision for the discovery of potent agents against H. pylori and urease associated diseases.
Collapse
Affiliation(s)
- Ritu Kataria
- International Institute of Pharmaceutical Sciences, Sonepat, Haryana, India
| | - Anurag Khatkar
- Laboratory for Prevention Technology and Enzyme Inhibition Studies, Faculty of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana, India
| |
Collapse
|
45
|
Insights into the Suppression of Multidrug-Resistant Helicobacter pylori by Probiotics Supernatant. Jundishapur J Microbiol 2019. [DOI: 10.5812/jjm.91797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
46
|
Menchicchi B, Savvaidou E, Thöle C, Hensel A, Goycoolea FM. Low-Molecular-Weight Dextran Sulfate Nanocapsules Inhibit the Adhesion of Helicobacter pylori to Gastric Cells. ACS APPLIED BIO MATERIALS 2019; 2:4777-4789. [DOI: 10.1021/acsabm.9b00523] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Bianca Menchicchi
- Institute of Plant Biology and Biotechnology (IBBP), University of Münster, Schlossplatz 8, D-48143 Münster, Germany
- Department of Medicine 1, University of Erlangen-Nüremberg, D-91054 Erlangen, Germany
| | - Eleni Savvaidou
- Institute of Plant Biology and Biotechnology (IBBP), University of Münster, Schlossplatz 8, D-48143 Münster, Germany
| | - Christian Thöle
- Institute for Pharmaceutical Biology and Phytochemistry (IPBP), University of Münster, Correnstrasse 48, D-48149 Münster, Germany
| | - Andreas Hensel
- Institute for Pharmaceutical Biology and Phytochemistry (IPBP), University of Münster, Correnstrasse 48, D-48149 Münster, Germany
| | - Francisco M. Goycoolea
- Institute of Plant Biology and Biotechnology (IBBP), University of Münster, Schlossplatz 8, D-48143 Münster, Germany
- School of Food Science and Nutrition, University of Leeds, LS2 9JT Leeds, United Kingdom
| |
Collapse
|
47
|
Li Y, Xu L, Duan M, Wu J, Wang Y, Dong K, Han M, You Z. An acetohydroxamate-coordinated oxidovanadium(V) complex derived from pyridinohydrazone ligand with urease inhibitory activity. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.05.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
48
|
A Genome-Wide Helicobacter pylori Morphology Screen Uncovers a Membrane-Spanning Helical Cell Shape Complex. J Bacteriol 2019; 201:JB.00724-18. [PMID: 31036730 DOI: 10.1128/jb.00724-18] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 04/26/2019] [Indexed: 12/16/2022] Open
Abstract
Evident in its name, the gastric pathogen Helicobacter pylori has a helical cell morphology which facilitates efficient colonization of the human stomach. An improved light-focusing strategy allowed us to robustly distinguish even subtle perturbations of H. pylori cell morphology by deviations in light-scattering properties measured by flow cytometry. Profiling of an arrayed genome-wide deletion library identified 28 genes that influence different aspects of cell shape, including properties of the helix, cell length or width, cell filament formation, cell shape heterogeneity, and cell branching. Included in this mutant collection were two that failed to form any helical cells, a soluble lytic transglycosylase and a previously uncharacterized putative multipass inner membrane protein HPG27_0728, renamed Csd7. A combination of cell fractionation, mutational, and immunoprecipitation experiments show that Csd7 and Csd2 collaborate to stabilize the Csd1 peptidoglycan (PG) endopeptidase. Thus, both csd2 and csd7 mutants show the same enhancement of PG tetra-pentapeptide cross-linking as csd1 mutants. Csd7 also links Csd1 with the bactofilin CcmA via protein-protein interactions. Although Csd1 is stable in ccmA mutants, these mutants show altered PG tetra-pentapeptide cross-linking, suggesting that Csd7 may directly or indirectly activate as well as stabilize Csd1. These data begin to illuminate a highly orchestrated program to regulate PG modifications that promote helical shape, which includes nine nonessential nonredundant genes required for helical shape and 26 additional genes that further modify H. pylori's cell morphology.IMPORTANCE The stomach ulcer and cancer-causing pathogen Helicobacter pylori has a helical cell shape which facilitates stomach infection. Using light scattering to measure perturbations of cell morphology, we identified 28 genes that influence different aspects of cell shape. A mutant in a previously uncharacterized protein renamed Csd7 failed to form any helical cells. Biochemical analyses showed that Csd7 collaborates with other proteins to stabilize the cell wall-degrading enzyme Csd1. Csd7 also links Csd1 with a putative filament-forming protein via protein-protein interactions. These data suggest that helical cell shape arises from a highly orchestrated program to regulate cell wall modifications. Targeting of this helical cell shape-promoting program could offer new ways to block infectivity of this important human pathogen.
Collapse
|
49
|
Nonhelical Helicobacter pylori Mutants Show Altered Gland Colonization and Elicit Less Gastric Pathology than Helical Bacteria during Chronic Infection. Infect Immun 2019; 87:IAI.00904-18. [PMID: 31061142 DOI: 10.1128/iai.00904-18] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/26/2019] [Indexed: 12/13/2022] Open
Abstract
Half of all humans harbor Helicobacter pylori in their stomachs. Helical cell shape is thought to facilitate H. pylori's ability to bore into the protective mucus layer in a corkscrew-like motion, thereby enhancing colonization of the stomach. H. pylori cell shape mutants show impaired colonization of the mouse stomach, highlighting the importance of cell shape in infection. To gain a deeper understanding of how helical cell morphology promotes host colonization by H. pylori, we used three-dimensional confocal microscopy to visualize the clinical isolate PMSS1 and an isogenic straight-rod mutant (Δcsd6) within thick longitudinal mouse stomach sections. We also performed volumetric image analysis to quantify the number of bacteria residing within corpus and antral glands in addition to measuring total CFU. We found that straight rods show attenuation during acute colonization of the stomach (1 day or 1 week postinfection) as measured by total CFU. Our quantitative imaging revealed that wild-type bacteria extensively colonized antral glands at 1 week postinfection, while csd6 mutants showed variable colonization of the antrum at this time point. During chronic infection (1 or 3 months postinfection), total CFU were highly variable but similar for wild-type and straight rods. Both wild-type and straight rods persisted and expanded in corpus glands during chronic infection. However, the straight rods showed reduced inflammation and disease progression. Thus, helical cell shape contributes to tissue interactions that promote inflammation during chronic infection, in addition to facilitating niche acquisition during acute infection.
Collapse
|
50
|
Exploration of organotin(IV) derivatives for medicinal applications: Synthesis, spectroscopic characterization, structural elucidation and molecular docking study. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.12.041] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|