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Tian G, Hu J, Qin C, Li L, Ning Y, Zhu S, Xie S, Zou X, Seeberger PH, Yin J. Chemical Synthesis and Antigenicity Evaluation of an Aminoglycoside Trisaccharide Repeating Unit of Pseudomonas aeruginosa Serotype O5 O-Antigen Containing a Rare Dimeric-Man pN3NA. J Am Chem Soc 2024; 146:18427-18439. [PMID: 38946080 DOI: 10.1021/jacs.4c03814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Pseudomonas aeruginosa bacteria are becoming increasingly resistant against multiple antibiotics. Therefore, the development of vaccines to prevent infections with these bacteria is an urgent medical need. While the immunological activity of lipopolysaccharide O-antigens in P. aeruginosa is well-known, the specific protective epitopes remain unidentified. Herein, we present the first chemical synthesis of highly functionalized aminoglycoside trisaccharide 1 and its acetamido derivative 2 found in the P. aeruginosa serotype O5 O-antigen. The synthesis of the trisaccharide targets is based on balancing the reactivity of disaccharide acceptors and monosaccharide donors. Glycosylations were analyzed by quantifying the reactivity of the hydroxyl group of the disaccharide acceptor using the orbital-weighted Fukui function and dual descriptor. The stereoselective formation of 1,2-cis-α-fucosylamine linkages was achieved through a combination of remote acyl participation and reagent modulation. The simultaneous SN2 substitution of azide groups at C2' and C2″ enabled the efficient synthesis of 1,2-cis-β-linkages for both 2,3-diamino-D-mannuronic acids. Through a strategic orthogonal modification, the five amino groups on target trisaccharide 1 were equipped with a rare acetamidino (Am) and four acetyl (Ac) groups. Glycan microarray analyses of sera from patients infected with P. aeruginosa indicated that trisaccharides 1 and 2 are key antigenic epitopes of the serotype O5 O-antigen. The acetamidino group is not an essential determinant of antibody binding. The β-D-ManpNAc3NAcA residue is a key motif for the antigenicity of serotype O5 O-antigen. These findings serve as a foundation for the development of glycoconjugate vaccines targeting P. aeruginosa serotype O5.
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Affiliation(s)
- Guangzong Tian
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P.R. China
- Biomolecular Systems Department, Max Planck Institute of Colloids and Interfaces, Am Muehlenberg 1, Potsdam 14476, Germany
| | - Jing Hu
- Wuxi School of Medicine, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P.R. China
| | - Chunjun Qin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P.R. China
| | - Lingxin Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P.R. China
| | - Yunzhan Ning
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P.R. China
| | - Shengyong Zhu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P.R. China
| | - Suqing Xie
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P.R. China
| | - Xiaopeng Zou
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P.R. China
| | - Peter H Seeberger
- Biomolecular Systems Department, Max Planck Institute of Colloids and Interfaces, Am Muehlenberg 1, Potsdam 14476, Germany
| | - Jian Yin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P.R. China
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Badillo-Larios NS, Turrubiartes-Martínez EA, Layseca-Espinosa E, González-Amaro R, Pérez-González LF, Niño-Moreno P. Interesting Cytokine Profile Caused by Clinical Strains of Pseudomonas aeruginosa MDR Carrying the exoU Gene. Int J Microbiol 2024; 2024:2748842. [PMID: 38974708 PMCID: PMC11227949 DOI: 10.1155/2024/2748842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 06/07/2024] [Accepted: 06/11/2024] [Indexed: 07/09/2024] Open
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen in HAIs with two facets: the most studied is the high rate of antimicrobial resistance, and the less explored is the long list of virulence factors it possesses. This study aimed to characterize the virulence genes carried by strains as well as the profile of cytokines related to inflammation, according to the resistance profile presented. This study aims to identify the virulence factors associated with MDR strains, particularly those resistant to carbapenems, and assess whether there is a cytokine profile that correlates with these characteristics. As methodology species were identified by classical microbiological techniques and confirmed by molecular biology, resistance levels were determined by the minimum inhibitory concentration and identification of MDR strains. Virulence factor genotyping was performed using PCR. In addition, biofilm production was assessed using crystal violet staining. Finally, the strains were cocultured with PBMC, and cell survival and the cytokines IL-1β, IL-6, IL-10, IL-8, and TNF-α were quantified using flow cytometry. Bacteremia and nosocomial pneumonia in adults are the most frequent types of infection. In the toxigenic aspect, genes corresponding to the type III secretion system were present in at least 50% of cases. In addition, PBMC exposed to strains of four different categories according to their resistance and toxicity showed a differential pattern of cytokine expression, a decrease in IL-10, IL-6, and IL-8, and an over-secretion of IL-1b. In conclusion, the virulence genes showed a differentiated appearance for the two most aggressive exotoxins of T3SS (exoU and exoS) in multidrug-resistant strains. Moreover, the cytokine profile displays a low expression of cytokines with anti-inflammatory and proinflammatory effects in strains carrying the exoU gene.
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Affiliation(s)
- Nallely S. Badillo-Larios
- Center of Research in Health Sciences and BiomedicineFaculty of MedicineAutonomous University of San Luis Potosi, San Luis Potosi, Mexico
| | - Edgar Alejandro Turrubiartes-Martínez
- Center of Research in Health Sciences and BiomedicineFaculty of MedicineAutonomous University of San Luis Potosi, San Luis Potosi, Mexico
- Laboratory of Hematology, Faculty of Chemical SciencesAutonomous University of San Luis Potosi, San Luis Potosi, Mexico
| | - Esther Layseca-Espinosa
- Center of Research in Health Sciences and BiomedicineFaculty of MedicineAutonomous University of San Luis Potosi, San Luis Potosi, Mexico
- Faculty of MedicineAutonomous University of San Luis Potosi, San Luis Potosi, Mexico
| | - Roberto González-Amaro
- Center of Research in Health Sciences and BiomedicineFaculty of MedicineAutonomous University of San Luis Potosi, San Luis Potosi, Mexico
- Faculty of MedicineAutonomous University of San Luis Potosi, San Luis Potosi, Mexico
| | - Luis Fernando Pérez-González
- Faculty of MedicineAutonomous University of San Luis Potosi, San Luis Potosi, Mexico
- Central Hospital Dr. Ignacio Morones Prieto, San Luis Potosi, Mexico
| | - Perla Niño-Moreno
- Center of Research in Health Sciences and BiomedicineFaculty of MedicineAutonomous University of San Luis Potosi, San Luis Potosi, Mexico
- Genetics LaboratoryFaculty of Chemical SciencesAutonomous University of San Luis Potosi, San Luis Potosi, Mexico
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Fenyvesi É, Berkl Z, Ligethy L, Fekete-Kertész I, Csizmazia M, Malanga M, Puskás I, Szőcs L, Iványi R, Kese I, Varga E, Szente L, Molnár M. Long-Chain Alkylthio Cyclodextrin Derivatives for Modulation of Quorum-Sensing-Based Bioluminescence in Aliivibrio fischeri Model System. Int J Mol Sci 2024; 25:7139. [PMID: 39000246 PMCID: PMC11241527 DOI: 10.3390/ijms25137139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 07/16/2024] Open
Abstract
Quorum sensing (QS) allows bacteria to coordinate their activities by producing and detecting low-molecular-weight signal molecules based on population density, thereby controlling the infectivity of bacteria through various virulence factors. Quorum-sensing inhibition is a promising approach to tackle bacterial communication. Cyclodextrins (CDs) are a class of cyclic oligosaccharides that reversibly encapsulate the acyl chain of the signal molecules, thereby preventing their binding to receptors and interrupting bacterial communication. This results in the inhibition of the expression of various properties, including different virulence factors. To examine the potential quorum-quenching (QQ) ability of newly prepared cyclodextrin derivatives, we conducted short-term tests using Aliivibrio fischeri, a heterotrophic marine bacterium capable of bioluminescence controlled by quorum sensing. α- and β-cyclodextrins monosubstituted with alkylthio moieties and further derivatized with quaternary ammonium groups were used as the test agents. The effect of these cyclodextrins on the quorum-sensing system of A. fischeri was investigated by adding them to an exponential growth phase of the culture and then measuring bioluminescence intensity, population growth, and cell viability. Our results demonstrate that the tested cyclodextrins have an inhibitory effect on the quorum-sensing system of A. fischeri. The inhibitory effect varies based on the length of the alkyl chain, with alkylthio substitution enhancing it and the presence of quaternary ammonium groups decreasing it. Our findings suggest that cyclodextrins can be a promising therapeutic agent for the treatment of bacterial infections.
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Affiliation(s)
- Éva Fenyvesi
- CycloLab Cyclodextrin R&D Laboratory Ltd., Illatos út 7, 1097 Budapest, Hungary; (M.M.); (I.P.); (L.S.); (R.I.); (I.K.); (E.V.); (L.S.)
| | - Zsófia Berkl
- Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Műegyetem rkp. 3, 1111 Budapest, Hungary; (Z.B.); (L.L.); (I.F.-K.); (M.C.)
| | - Laura Ligethy
- Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Műegyetem rkp. 3, 1111 Budapest, Hungary; (Z.B.); (L.L.); (I.F.-K.); (M.C.)
| | - Ildikó Fekete-Kertész
- Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Műegyetem rkp. 3, 1111 Budapest, Hungary; (Z.B.); (L.L.); (I.F.-K.); (M.C.)
| | - Márton Csizmazia
- Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Műegyetem rkp. 3, 1111 Budapest, Hungary; (Z.B.); (L.L.); (I.F.-K.); (M.C.)
| | - Milo Malanga
- CycloLab Cyclodextrin R&D Laboratory Ltd., Illatos út 7, 1097 Budapest, Hungary; (M.M.); (I.P.); (L.S.); (R.I.); (I.K.); (E.V.); (L.S.)
| | - István Puskás
- CycloLab Cyclodextrin R&D Laboratory Ltd., Illatos út 7, 1097 Budapest, Hungary; (M.M.); (I.P.); (L.S.); (R.I.); (I.K.); (E.V.); (L.S.)
| | - Levente Szőcs
- CycloLab Cyclodextrin R&D Laboratory Ltd., Illatos út 7, 1097 Budapest, Hungary; (M.M.); (I.P.); (L.S.); (R.I.); (I.K.); (E.V.); (L.S.)
| | - Róbert Iványi
- CycloLab Cyclodextrin R&D Laboratory Ltd., Illatos út 7, 1097 Budapest, Hungary; (M.M.); (I.P.); (L.S.); (R.I.); (I.K.); (E.V.); (L.S.)
| | - István Kese
- CycloLab Cyclodextrin R&D Laboratory Ltd., Illatos út 7, 1097 Budapest, Hungary; (M.M.); (I.P.); (L.S.); (R.I.); (I.K.); (E.V.); (L.S.)
| | - Erzsébet Varga
- CycloLab Cyclodextrin R&D Laboratory Ltd., Illatos út 7, 1097 Budapest, Hungary; (M.M.); (I.P.); (L.S.); (R.I.); (I.K.); (E.V.); (L.S.)
| | - Lajos Szente
- CycloLab Cyclodextrin R&D Laboratory Ltd., Illatos út 7, 1097 Budapest, Hungary; (M.M.); (I.P.); (L.S.); (R.I.); (I.K.); (E.V.); (L.S.)
| | - Mónika Molnár
- Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Műegyetem rkp. 3, 1111 Budapest, Hungary; (Z.B.); (L.L.); (I.F.-K.); (M.C.)
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Cianciulli Sesso A, Resch A, Moll I, Bläsi U, Sonnleitner E. The FinO/ProQ-like protein PA2582 impacts antimicrobial resistance in Pseudomonas aeruginosa. Front Microbiol 2024; 15:1422742. [PMID: 39011145 PMCID: PMC11247311 DOI: 10.3389/fmicb.2024.1422742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Accepted: 06/03/2024] [Indexed: 07/17/2024] Open
Abstract
Bacteria employ small regulatory RNAs (sRNA) and/or RNA binding proteins (RBPs) to respond to environmental cues. In Enterobacteriaceae, the FinO-domain containing RBP ProQ associates with numerous sRNAs and mRNAs, impacts sRNA-mediated riboregulation or mRNA stability by binding to 5'- or 3'-untranslated regions as well as to internal stem loop structures. Global RNA-protein interaction studies and sequence comparisons identified a ProQ-like homolog (PA2582/ProQ Pae ) in Pseudomonas aeruginosa (Pae). To address the function of ProQ Pae , at first a comparative transcriptome analysis of the Pae strains PAO1 and PAO1ΔproQ was performed. This study revealed more than 100 differentially abundant transcripts, affecting a variety of cellular functions. Among these transcripts were pprA and pprB, encoding the PprA/PprB two component system, psrA, encoding a transcriptional activator of pprB, and oprI, encoding the outer membrane protein OprI. RNA co-purification experiments with Strep-tagged Pae ProQ protein corroborated an association of ProQ Pae with these transcripts. In accordance with the up-regulation of the psrA, pprA, and pprB genes in strain PAO1ΔproQ a phenotypic analysis revealed an increased susceptibility toward the aminoglycosides tobramycin and gentamicin in biofilms. Conversely, the observed down-regulation of the oprI gene in PAO1ΔproQ could be reconciled with a decreased susceptibility toward the synthetic cationic antimicrobial peptide GW-Q6. Taken together, these studies revealed that ProQ Pae is an RBP that impacts antimicrobial resistance in Pae.
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Affiliation(s)
- Anastasia Cianciulli Sesso
- Department of Microbiology, Immunobiology and Genetics, Max Perutz Labs, Center of Molecular Biology, Vienna Biocenter, University of Vienna, Vienna, Austria
- Vienna BioCenter PhD Program, a Doctoral School of the University of Vienna and the Medical University of Vienna, Max Perutz Labs, Vienna Biocenter, University of Vienna, Vienna, Austria
| | - Armin Resch
- Department of Microbiology, Immunobiology and Genetics, Max Perutz Labs, Center of Molecular Biology, Vienna Biocenter, University of Vienna, Vienna, Austria
| | - Isabella Moll
- Department of Microbiology, Immunobiology and Genetics, Max Perutz Labs, Center of Molecular Biology, Vienna Biocenter, University of Vienna, Vienna, Austria
| | - Udo Bläsi
- Department of Microbiology, Immunobiology and Genetics, Max Perutz Labs, Center of Molecular Biology, Vienna Biocenter, University of Vienna, Vienna, Austria
| | - Elisabeth Sonnleitner
- Department of Microbiology, Immunobiology and Genetics, Max Perutz Labs, Center of Molecular Biology, Vienna Biocenter, University of Vienna, Vienna, Austria
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Bi H, Qin J, Huang J, Zhong C, Liu Y. Outer membrane vesicles from X-ray-irradiated Pseudomonas aeruginosa alleviate lung injury caused by P. aeruginosa infection-mediated sepsis. APMIS 2024. [PMID: 38837446 DOI: 10.1111/apm.13444] [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: 01/02/2024] [Accepted: 05/21/2024] [Indexed: 06/07/2024]
Abstract
Pseudomonas aeruginosa infection causes pneumonia and sepsis. Previous research found that X-ray radiation can induce P. aeruginosa to release outer membrane vesicles (OMVs) of relatively consistent sizes. This study found that OMVs derived from X-ray-irradiated P. aeruginosa can significantly inhibit lung leakage, inflammatory cell infiltrating into lung, and the production of pro-inflammatory cytokines, IL-1β and TNFα caused by P. aeruginosa infection under preventive and therapeutic administration conditions. Under the same conditions, OMVs also significantly alleviated pathological characteristics of lung injury, including pulmonary edema, pulmonary hemorrhage, and alveolar wall thickening. OMVs also significantly reduced bacterial burdens in peritoneal cavity, accompanied by a reduction in the number of viable bacteria capable of forming bacterial colonies. Pretreating macrophages and neutrophils with OMVs enhances their bactericidal ability. When bacteria were cocultured with treated cells, the number of viable bacteria capable of forming bacterial colonies was significantly reduced. OMVs themselves have not been shown to cause any lung injury or affect bacterial viability. Therefore, OMVs derived from X-ray-irradiated P. aeruginosa may not only be applied in prevention and treatment of diseases associated with P. aeruginosa infection, but also served as an excellent vaccine development platform.
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Affiliation(s)
- Hongxia Bi
- Center of Infectious Disease, West China Hospital, Sichuan University, Chengdu, China
| | - Jiayuan Qin
- Center of Infectious Disease, West China Hospital, Sichuan University, Chengdu, China
| | - Jiaqi Huang
- Center of Infectious Disease, West China Hospital, Sichuan University, Chengdu, China
| | - Cejun Zhong
- Center of Infectious Disease, West China Hospital, Sichuan University, Chengdu, China
| | - Yanbin Liu
- Center of Infectious Disease, West China Hospital, Sichuan University, Chengdu, China
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Aroca Molina KJ, Gutiérrez SJ, Benítez-Campo N, Correa A. Genomic Differences Associated with Resistance and Virulence in Pseudomonas aeruginosa Isolates from Clinical and Environmental Sites. Microorganisms 2024; 12:1116. [PMID: 38930498 PMCID: PMC11205572 DOI: 10.3390/microorganisms12061116] [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: 03/10/2024] [Revised: 04/05/2024] [Accepted: 04/13/2024] [Indexed: 06/28/2024] Open
Abstract
Pseudomonas aeruginosa is a pathogen that causes healthcare-associated infections (HAIs) worldwide. It is unclear whether P. aeruginosa isolated from the natural environment has the same pathogenicity and antimicrobial resistance potential as clinical strains. In this study, virulence- and resistance-associated genes were compared in 14 genomic sequences of clinical and environmental isolates of P. aeruginosa using the VFDB, PATRIC, and CARD databases. All isolates were found to share 62% of virulence genes related to adhesion, motility, secretion systems, and quorum sensing and 72.9% of resistance genes related to efflux pumps and membrane permeability. Our results indicate that both types of isolates possess conserved genetic information associated with virulence and resistance mechanisms regardless of the source. However, none of the environmental isolates were associated with high-risk clones (HRCs). These clones (ST235 and ST111) were found only in clinical isolates, which have an impact on human medical epidemiology due to their ability to spread and persist, indicating a correlation between the clinical environment and increased virulence. The genomic variation and antibiotic susceptibility of environmental isolates of P. aeruginosa suggest potential biotechnological applications if obtained from sources that are under surveillance and investigation to limit the emergence and spread of antibiotic resistant strains.
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Affiliation(s)
- Kelly J. Aroca Molina
- Department of Biology, Faculty of Natural and Exact Sciences, Universidad del Valle, Cali 760042, Colombia; (K.J.A.M.); (S.J.G.)
| | - Sonia Jakeline Gutiérrez
- Department of Biology, Faculty of Natural and Exact Sciences, Universidad del Valle, Cali 760042, Colombia; (K.J.A.M.); (S.J.G.)
| | - Neyla Benítez-Campo
- Department of Biology, Faculty of Natural and Exact Sciences, Universidad del Valle, Cali 760042, Colombia; (K.J.A.M.); (S.J.G.)
| | - Adriana Correa
- Department of Basic Sciences, Universidad Santiago de Cali, Cali 760035, Colombia;
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Alamri MA, Prinsa, Kawsar SMA, Saha S. Exploring marine-derived bioactive compounds for dual inhibition of Pseudomonas aeruginosa LpxA and LpxD: integrated bioinformatics and cheminformatics approaches. Mol Divers 2024:10.1007/s11030-024-10888-8. [PMID: 38780832 DOI: 10.1007/s11030-024-10888-8] [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: 03/28/2024] [Accepted: 04/27/2024] [Indexed: 05/25/2024]
Abstract
Pseudomonas aeruginosa can cause serious nosocomial infections. Targeting the biosynthesis of Lipid A, a major structural domain of lipopolysaccharide (LPS) in P. aeruginosa has emerged as a valuable strategy for developing novel therapeutic agents. The biosynthesis of Lipid A involves the activation of homolog enzymes including LpxA and LpxD. LpxA enzyme facilitates the transfer of R-3-hydroxydecanoic fatty acid to uridine diphosphate N-acetylglucosamine in the first step. While LPxD is accountable in third step, wherein R-3-hydroxydodecanoate is transferred to the 2' amine of UDP-3-O-(3-hydroxydecanoyl) utilizing an ACP donor. The exploration of LpxA and LpxD has been largely neglected, as no specific small-molecule inhibitors have been identified, thus far, except for peptide inhibitors. Here, we report the identification of potential dual inhibitors of the lipid A biosynthesis pathway that target both the LpxA and LpxD enzymes as novel antibiotic agents. Among the virtually screened 32,000 marine bioactive compounds Oscillatoxin A, NCI60_041046, and LTS0192263 exhibited optimal docking interactions with LpxA and LpxD, respectively. MD simulation and MMPBSA data showcased stable interactions between selected marine products and LpxA/LpxD. FMO analysis showed that Oscillatoxin A and NCI60_041046 are the most chemically active molecules. MEP analysis data highlighted the possible electrophilic and nucleophilic distribution zones present in the structure. In addition, these bioactive molecules showed acceptable ADMET profiles. These data confirmed that Oscillatoxin A, NCI60_041046, and LTS0192263 could serve as seeds for the development of potential therapeutics to combat P. aeruginosa infection.
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Affiliation(s)
- Mubarak A Alamri
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, P.O. Box 173, 11942, Al-Kharj, Saudi Arabia
| | - Prinsa
- Siddhartha Institute of Pharmacy, Near IT-Park, Sahastradhara Road, Dehradun, 248001, Uttarakhand, India
| | - Sarkar M A Kawsar
- Laboratory of Carbohydrate and Nucleoside Chemistry, Department of Chemistry, Faculty of Science, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Supriyo Saha
- Department of Pharmaceutical Chemistry, Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, 248001, Uttarakhand, India.
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Jeong GJ, Khan F, Tabassum N, Jo DM, Jung WK, Kim YM. Roles of Pseudomonas aeruginosa siderophores in interaction with prokaryotic and eukaryotic organisms. Res Microbiol 2024:104211. [PMID: 38734157 DOI: 10.1016/j.resmic.2024.104211] [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: 11/19/2023] [Revised: 05/05/2024] [Accepted: 05/06/2024] [Indexed: 05/13/2024]
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen that produces two types of siderophores, pyoverdine and pyochelin, that play pivotal roles in iron scavenging from the environment and host cells. P. aeruginosa siderophores can serve as virulence factors and perform various functions. Several bacterial and fungal species are likely to interact with P. aeruginosa due to its ubiquity in soil and water as well as its potential to cause infections in plants, animals, and humans. Siderophores produced by P. aeruginosa play critical roles in iron scavenging for prokaryotic species (bacteria) and eukaryotic hosts (fungi, animals, insects, invertebrates, and plants) as well. This review provides a comprehensive discussion of the role of P. aeruginosa siderophores in interaction with prokaryotes and eukaryotes as well as their underlying mechanisms of action. The evolutionary relationship between P. aeruginosa siderophore recognition receptors, such as FpvA, FpvB, and FptA, and those of other bacterial species has also been investigated.
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Affiliation(s)
- Geum-Jae Jeong
- Department of Food Science and Technology, Pukyong National University, Busan 48513, Republic of Korea; Marine Integrated Biomedical Technology Center, The National Key Research Institutes in Universities, Pukyong National University, Busan, 48513, Republic of Korea; Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan 48513, Republic of Korea
| | - Fazlurrahman Khan
- Marine Integrated Biomedical Technology Center, The National Key Research Institutes in Universities, Pukyong National University, Busan, 48513, Republic of Korea; Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan 48513, Republic of Korea; Institute of Fisheries Science, Pukyong National University. Busan 48513, Republic of Korea; International Graduate Program of Fisheries Science, Pukyong National University, Busan 48513, Republic of Korea.
| | - Nazia Tabassum
- Marine Integrated Biomedical Technology Center, The National Key Research Institutes in Universities, Pukyong National University, Busan, 48513, Republic of Korea; Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan 48513, Republic of Korea
| | - Du-Min Jo
- National Marine Biodiversity Institute of Korea, Seochun, Chungcheongnam-do, 33662, Republic of Korea
| | - Won-Kyo Jung
- Marine Integrated Biomedical Technology Center, The National Key Research Institutes in Universities, Pukyong National University, Busan, 48513, Republic of Korea; Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan 48513, Republic of Korea; Major of Biomedical Engineering, Division of Smart Healthcare, College of Information Technology and Convergence and New-senior Healthcare Innovation Center (BK21 Plus), Pukyong National University, Busan, Republic of Korea
| | - Young-Mog Kim
- Department of Food Science and Technology, Pukyong National University, Busan 48513, Republic of Korea; Marine Integrated Biomedical Technology Center, The National Key Research Institutes in Universities, Pukyong National University, Busan, 48513, Republic of Korea; Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan 48513, Republic of Korea
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Omran BA, Tseng BS, Baek KH. Nanocomposites against Pseudomonas aeruginosa biofilms: Recent advances, challenges, and future prospects. Microbiol Res 2024; 282:127656. [PMID: 38432017 DOI: 10.1016/j.micres.2024.127656] [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: 10/26/2023] [Revised: 01/10/2024] [Accepted: 02/17/2024] [Indexed: 03/05/2024]
Abstract
Pseudomonas aeruginosa is an opportunistic bacterial pathogen that causes life-threatening and persistent infections in immunocompromised patients. It is the culprit behind a variety of hospital-acquired infections owing to its multiple tolerance mechanisms against antibiotics and disinfectants. Biofilms are sessile microbial aggregates that are formed as a result of the cooperation and competition between microbial cells encased in a self-produced matrix comprised of extracellular polymeric constituents that trigger surface adhesion and microbial aggregation. Bacteria in biofilms exhibit unique features that are quite different from planktonic bacteria, such as high resistance to antibacterial agents and host immunity. Biofilms of P. aeruginosa are difficult to eradicate due to intrinsic, acquired, and adaptive resistance mechanisms. Consequently, innovative approaches to combat biofilms are the focus of the current research. Nanocomposites, composed of two or more different types of nanoparticles, have diverse therapeutic applications owing to their unique physicochemical properties. They are emerging multifunctional nanoformulations that combine the desired features of the different elements to obtain the highest functionality. This review assesses the recent advances of nanocomposites, including metal-, metal oxide-, polymer-, carbon-, hydrogel/cryogel-, and metal organic framework-based nanocomposites for the eradication of P. aeruginosa biofilms. The characteristics and virulence mechanisms of P. aeruginosa biofilms, as well as their devastating impact and economic burden are discussed. Future research addressing the potential use of nanocomposites as innovative anti-biofilm agents is emphasized. Utilization of nanocomposites safely and effectively should be further strengthened to confirm the safety aspects of their application.
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Affiliation(s)
- Basma A Omran
- Department of Biotechnology, Yeungnam University, Gyeongbuk, Gyeongsan 38541, Republic of Korea; Department of Processes Design & Development, Egyptian Petroleum Research Institute (EPRI), PO 11727, Nasr City, Cairo, Egypt
| | - Boo Shan Tseng
- School of Life Sciences, University of Nevada Las Vegas, Las Vegas, NV, USA.
| | - Kwang-Hyun Baek
- Department of Biotechnology, Yeungnam University, Gyeongbuk, Gyeongsan 38541, Republic of Korea.
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10
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Oza Y, Patel R, Patel D, Shukla A. Taming Pseudomonas aeruginosa AM26 the barbarian: Targeting the PQS quorum sensing network using crude mandarin extract. Diagn Microbiol Infect Dis 2024; 109:116212. [PMID: 38387214 DOI: 10.1016/j.diagmicrobio.2024.116212] [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: 11/19/2023] [Revised: 02/03/2024] [Accepted: 02/09/2024] [Indexed: 02/24/2024]
Abstract
Pseudomonas aeruginosa, one of the most notorious organisms, causes fatal diseases like-, meningitis, pneumonia as well as worsens the prognosis of cystic fibrosis patients. It is also multi-drug resistant and resists a wide range of antibiotics. Attempts have been made to reduce its virulence/pathogenic potential using a number of organic compounds. For this purpose, the Quorum sensing (QS) system of P. aeruginosa was targeted, which regulates its virulence. Pseudomonas Quinolone System (PQS), one of the four quorum sensing systems, producing pyocyanin pigment was chosen. 2-heptyl-3-hydroxy-4-quinolone (HHQ) is a ligand which binds to PQS protein is responsible for pyocyanin pigment production. Attempts were made to find a compound analogous to HHQ which could bind to PQS active site and inhibit the pigment formation. In-silico analysis was performed to estimate possible interactions and to find/predict the possible PQS inhibitors.
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Affiliation(s)
- Yukti Oza
- National Centre for Cell Science, Pune Savitribai Phule Pune University Campus Ganeshkhind Road, Pune, 411007, Maharashtra State, India
| | - Rohit Patel
- Department of Microbiology and Biotechnology, Gujarat University, Navrangpura, Ahmedabad, 380009, Gujarat, India
| | - Dhara Patel
- Department of Biotechnology and Bioengineering, Indian Institute of Advanced Research, Gandhinagar, 382426, Gujarat, India
| | - Arpit Shukla
- Department of Biotechnology and Bioengineering, Indian Institute of Advanced Research, Gandhinagar, 382426, Gujarat, India.
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11
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Zhang W, Qu H, Wu X, Shi J, Wang X. Rapid, sensitive, and user-friendly detection of Pseudomonas aeruginosa using the RPA/CRISPR/Cas12a system. BMC Infect Dis 2024; 24:458. [PMID: 38689239 PMCID: PMC11061930 DOI: 10.1186/s12879-024-09348-3] [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: 11/14/2023] [Accepted: 04/24/2024] [Indexed: 05/02/2024] Open
Abstract
BACKGROUND Pseudomonas aeruginosa (P. aeruginosa) is a life-threatening bacterium known for its rapid development of antibiotic resistance, posing significant challenges in clinical treatment, biosecurity, food safety, and environmental monitoring. Early and accurate identification of P. aeruginosa is crucial for effective intervention. METHODS The lasB gene of P. aeruginosa was selected as the target for the detection. RPA primers for recombinase polymerase amplification (RPA) and crRNA for CRISPR/Cas12a detection were meticulously designed to target specific regions within the lasB gene. The specificity of the RPA/CRISPR/Cas12a detection platform was assessed using 15 strains. The detection limit of RPA/CRISPR/Cas12a detection platform was determined by utilizing a pseudo-dilution series of the P. aeruginosa DNA. The practical applicability of the RPA/CRISPR/Cas12a detection platform was validated by comparing it with qPCR on 150 samples (35 processed meat product samples, 55 cold seasoned vegetable dishes, 60 bottled water samples). RESULTS The RPA/CRISPR/Cas12a detection platform demonstrates high specificity, with no cross-reactivity with non-P. aeruginosa strains. This assay exhibits remarkable sensitivity, with a limit of detection (LOD) of 100 copies/µL for fluorescence assay and 101 copies/µL for the LFTS method. Furthermore, the performance of the RPA/CRISPR/Cas12a detection platform is comparable to that of the well-established qPCR method, while offering advantages such as shorter reaction time, simplified operation, and reduced equipment requirements. CONCLUSIONS The RPA/CRISPR/Cas12a detection platform presents a straightforward, accurate, and sensitive approach for early P. aeruginosa detection and holds great promise for diverse applications requiring rapid and reliable identification.
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Affiliation(s)
- Wenjing Zhang
- Medical college, Henan University of Chinese Medicine, No.156, Jinshui East Road, Zhengzhou, 450046, Henan, China.
| | - Hai Qu
- Autobio Diagnostics Co., Ltd., No.199, 15th Ave, Zhengzhou, 450016, Henan, China
| | - Xin Wu
- Medical college, Henan University of Chinese Medicine, No.156, Jinshui East Road, Zhengzhou, 450046, Henan, China
| | - Jingjing Shi
- Pharmacy College, Henan University of Chinese Medicine, No.156, Jinshui East Road, Zhengzhou, 450046, Henan, China
| | - Xinling Wang
- Pharmacy College, Henan University of Chinese Medicine, No.156, Jinshui East Road, Zhengzhou, 450046, Henan, China.
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12
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de Melo Guedes GM, Pereira VC, Freitas AS, Honório de Souza PR, Chacon Parra AL, Brasil JA, de Medeiros Guedes RF, Pereira de Sousa PC, de Aguiar Cordeiro R, Gadelha Rocha MF, Costa Sidrim JJ, de Souza Collares Maia Castelo Branco D. Repurposing approved drugs as potential efflux pump inhibitors in multidrug-resistant Pseudomonas aeruginosa. Future Microbiol 2024; 19:495-508. [PMID: 38629920 PMCID: PMC11216505 DOI: 10.2217/fmb-2023-0208] [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: 09/16/2023] [Accepted: 11/22/2023] [Indexed: 06/27/2024] Open
Abstract
Aim: To evaluate the action of promethazine, fluoxetine and carbonyl cyanide 3-chlorophenylhydrazone as efflux pump inhibitors (EPIs) against multidrug-resistant Pseudomonas aeruginosa. Methods: The effect of the compounds was evaluated in planktonic cells and bacterial biofilms. Accumulation tests were performed with ethidium bromide to prove their action as EPIs. Then, they were associated with antimicrobials. Results: Effect on planktonic cells and biofilms was found. Assays with ethidium bromide indicate their action as EPIs. Significant reductions in the metabolic activity of biofilms were observed after the association with the antimicrobials, especially for meropenem. Conclusion: It is possible to prove the action of these compounds as EPIs for P. aeruginosa and demonstrate the relevance of efflux pumps in antimicrobial resistance.
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Affiliation(s)
- Gláucia Morgana de Melo Guedes
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, 60430-275, Brazil
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Laboratory of Emerging and Reemerging Pathogens, Federal University of Ceará, Fortaleza, Ceará, 60430-275, Brazil
| | - Vinicius Carvalho Pereira
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, 60430-275, Brazil
| | - Alyne Soares Freitas
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, 60430-275, Brazil
| | - Paulo Roberto Honório de Souza
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, 60430-275, Brazil
| | - Aura Lucia Chacon Parra
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, 60430-275, Brazil
| | - Jaiane Alves Brasil
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, 60430-275, Brazil
| | - Rodrigo Fonseca de Medeiros Guedes
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, 60430-275, Brazil
| | | | - Rossana de Aguiar Cordeiro
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Laboratory of Emerging and Reemerging Pathogens, Federal University of Ceará, Fortaleza, Ceará, 60430-275, Brazil
| | - Marcos Fábio Gadelha Rocha
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Laboratory of Emerging and Reemerging Pathogens, Federal University of Ceará, Fortaleza, Ceará, 60430-275, Brazil
- Postgraduate Program in Veterinary Sciences, School of Veterinary, State University of Ceará, Fortaleza, Ceará, 60714-903, Brazil
| | - José Júlio Costa Sidrim
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Laboratory of Emerging and Reemerging Pathogens, Federal University of Ceará, Fortaleza, Ceará, 60430-275, Brazil
| | - Débora de Souza Collares Maia Castelo Branco
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, 60430-275, Brazil
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Laboratory of Emerging and Reemerging Pathogens, Federal University of Ceará, Fortaleza, Ceará, 60430-275, Brazil
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13
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He L, Song L, Li X, Lin S, Ye G, Liu H, Zhao X. Study of andrographolide bioactivity against Pseudomonas aeruginosa based on computational methodology and biochemical analysis. Front Chem 2024; 12:1388545. [PMID: 38680458 PMCID: PMC11045890 DOI: 10.3389/fchem.2024.1388545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 03/25/2024] [Indexed: 05/01/2024] Open
Abstract
Andrographolide is one of the main biologically active molecules isolated from Andrographis paniculata (A. paniculata), which is a traditional Chinese herb used extensively throughout Eastern Asia, India, and China. Pseudomonas aeruginosa, often known as P. aeruginosa, is a common clinical opportunistic pathogen with remarkable adaptability to harsh settings and resistance to antibiotics. P. aeruginosa possesses a wide array of virulence traits, one of which is biofilm formation, which contributes to its pathogenicity. One of the main modulators of the P. aeruginosa-controlled intramembrane proteolysis pathway is AlgW, a membrane-bound periplasmic serine protease. In this work, we have used a set of density functional theory (DFT) calculations to understand the variety of chemical parameters in detail between andrographolide and levofloxacin, which show strong bactericidal activity against P. aeruginosa. Additionally, the stability and interaction of andrographolide and levofloxacin with the protein AlgW have been investigated by molecular docking and molecular dynamics (MD) simulations . Moreover, the growth and inhibition of biofilm production by P. aeruginosa experiments were also investigated, providing insight that andrographolide could be a potential natural product to inhibit P. aeruginosa.
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Affiliation(s)
- Lihui He
- Department of Pharmacy, Chengdu Second Peoples Hospital, Chengdu, China
| | - Lai Song
- Department of Oncology, Chengdu Second Peoples Hospital, Chengdu, China
| | - Xuanhao Li
- Department of Pharmacy, Chengdu Second Peoples Hospital, Chengdu, China
| | - Shibo Lin
- Department of Pharmacy, Chengdu Second Peoples Hospital, Chengdu, China
| | - Guodong Ye
- The Fifth Affiliated Hospital, Guangdong Provincial Key Laboratory of Molecular Target and Clinical Pharmacology, The NMPA and State Key Laboratory of Respiratory Disease, The School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Huanxiang Liu
- Centre for Artificial Intelligence Driven Drug Discovery, Faculty of Applied Sciences, Macao Polytechnic University, Guangzhou, China
| | - Xiaotian Zhao
- Department of Pharmacy, Chengdu Second Peoples Hospital, Chengdu, China
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14
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Hemmati J, Nazari M, Abolhasani FS, Ahmadi A, Asghari B. In vitro investigation of relationship between quorum-sensing system genes, biofilm forming ability, and drug resistance in clinical isolates of Pseudomonas aeruginosa. BMC Microbiol 2024; 24:99. [PMID: 38528442 DOI: 10.1186/s12866-024-03249-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 03/04/2024] [Indexed: 03/27/2024] Open
Abstract
BACKGROUND Pseudomonas aeruginosa is an opportunistic pathogen in the health-care systems and one of the primary causative agents with high mortality in hospitalized patients, particularly immunocompromised. The limitation of effective antibiotic administration in multidrug-resistant and extensively drug-resistant P. aeruginosa isolates leads to the development of nosocomial infections and health problems. Quorum sensing system contributes to biofilm formation, expression of bacterial virulence factors, and development of drug resistance, causing prolonged patient infections. Therefore, due to the significance of the quorum sensing system in increasing the pathogenicity of P. aeruginosa, the primary objective of our study was to investigate the frequency of quorum sensing genes, as well as the biofilm formation and antibiotic resistance pattern among P. aeruginosa strains. METHODS A total of 120 P. aeruginosa isolates were collected from different clinical specimens. The disk diffusion method was applied to detect the antibiotic resistance pattern of P. aeruginosa strains. Also, the microtiter plate method was carried out to evaluate the biofilm-forming ability of isolates. Finally, the frequency of rhlI, rhlR, lasI, and lasR genes was examined by the polymerase chain reaction method. RESULTS In total, 88.3% P. aeruginosa isolates were found to be multidrug-resistant, of which 30.1% had extensively drug-resistant pattern. The highest and lowest resistance rates were found against ceftazidime (75.0%) and ciprofloxacin (46.6%), respectively. Also, 95.8% of isolates were able to produce biofilm, of which 42.5%, 33.3%, and 20.0% had strong, moderate, and weak biofilm patterns, respectively. The frequency of quorum sensing genes among all examined strains was as follows: rhlI (81.6%), rhlR (90.8%), lasI (89.1%), and lasR (78.3%). The most common type of quorum sensing genes among multidrug-resistant isolates were related to rhlR and lasI genes with 94.3%. Furthermore, rhlI, rhlR, and lasI genes were positive for all extensively drug-resistant isolates. However, the lasR gene had the lowest frequency among both multidrug-resistant (83.0%) and extensively drug-resistant (90.6%) isolates. Moreover, rhlR (94.7%) and lasR (81.7%) genes had the highest and lowest prevalence among biofilm-forming isolates, respectively. CONCLUSION Our findings disclosed the significantly high prevalence of drug resistance among P. aeruginosa isolates. Also, the quorum sensing system had a significant correlation with biofilm formation and drug resistance, indicating the essential role of this system in the emergence of nosocomial infections caused by P. aeruginosa.
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Affiliation(s)
- Jaber Hemmati
- Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran
- Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohsen Nazari
- Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran
- Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Fatemeh Sadat Abolhasani
- Department of Pathobiology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Amjad Ahmadi
- Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran.
- Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Babak Asghari
- Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
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15
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Fekete-Kertész I, Berkl Z, Buda K, Fenyvesi É, Szente L, Molnár M. Quorum quenching effect of cyclodextrins on the pyocyanin and pyoverdine production of Pseudomonas aeruginosa. Appl Microbiol Biotechnol 2024; 108:271. [PMID: 38517512 PMCID: PMC10959793 DOI: 10.1007/s00253-024-13104-7] [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: 10/08/2023] [Revised: 02/27/2024] [Accepted: 03/05/2024] [Indexed: 03/24/2024]
Abstract
Various virulence determinants in Pseudomonas aeruginosa are regulated by the quorum sensing (QS) network producing and releasing signalling molecules. Two of these virulence determinants are the pyocyanin and pyoverdine, which interfere with multiple cellular functions during infection. The application of QS-inhibiting agents, such as cyclodextrins (CDs), appears to be a promising approach. Further to method development, this research tested in large-volume test systems the effect of α- and β-CD (ACD, BCD) at 1, 5, and 10 mM concentrations on the production of pyocyanin in the P. aeruginosa model system. The concentration and time-dependent quorum quenching effect of native CDs and their derivatives on pyoverdine production was tested in a small-volume high-throughput system. In the large-volume system, both ACD and BCD significantly inhibited pyocyanin production, but ACD to a greater extent. 10 mM ACD resulted in 58% inhibition, while BCD only ~40%. Similarly, ACD was more effective in the inhibition of pyoverdine production; nevertheless, the results of RMANOVA demonstrated the significant efficiency of both ACD and BCD, as well as their derivatives. Both the contact time and the cyclodextrin treatments significantly influenced pyoverdine production. In this case, the inhibitory effect of ACD after 48 h at 12.5 mM was 57%, while the inhibitory effect of BCD and its derivatives was lower than 40%. The high-level significant inhibition of both pyocyanin and pyoverdine production by ACD was detectable. Consequently, the potential value of CDs as QS inhibitors and the antivirulence strategy should be considered. KEYPOINTS: • Applicability of a simplified method for quantification of pyocyanin production was demonstrated. • The cyclodextrins significantly affected the pyocyanin and pyoverdine production. • The native ACD exhibited the highest attenuation in pyoverdine production.
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Affiliation(s)
- Ildikó Fekete-Kertész
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem rkp. 3., Budapest, H-1111, Hungary
| | - Zsófia Berkl
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem rkp. 3., Budapest, H-1111, Hungary
| | - Kata Buda
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem rkp. 3., Budapest, H-1111, Hungary
| | - Éva Fenyvesi
- CycloLab Cyclodextrin R&D Laboratory Ltd., Illatos u. 7., Budapest, H-1097, Hungary
| | - Lajos Szente
- CycloLab Cyclodextrin R&D Laboratory Ltd., Illatos u. 7., Budapest, H-1097, Hungary
| | - Mónika Molnár
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem rkp. 3., Budapest, H-1111, Hungary.
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16
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Zhang C, Li S, Sun H, Li X, Fu L, Zhang C, Sun S, Zhou D. Assessing the impact of low organic loading on effluent safety in wastewater treatment: Insights from an activated sludge reactor study. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133083. [PMID: 38181593 DOI: 10.1016/j.jhazmat.2023.133083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/11/2023] [Accepted: 11/22/2023] [Indexed: 01/07/2024]
Abstract
In this study, an organic loading (OL) of 300 mg/(L d) was set as the relative normal condition (OL-300), while 150 mg/(L d) was chosen as the condition reflecting excessively low organic loading (OL-150) to thoroughly assess the associated risks in the effluent of the biological wastewater treatment process. Compared with OL-300, OL-150 did not lead to a significant decrease in dissolved organic carbon (DOC) concentration, but it did improve dissolved organic nitrogen (DON) levels by ∼63 %. Interestingly, the dissolved organic matter (DOM) exhibited higher susceptibility to transformation into chlorinated disinfection by-products (Cl-DBPs) in OL-150, resulting in an increase in the compound number of Cl-DBPs by ∼16 %. Additionally, OL-150 induced nutrient stress, which promoted engendered human bacterial pathogens (HBPs) survival by ∼32 % and led to ∼51 % increase in the antibiotic resistance genes (ARGs) abundance through horizontal gene transfer (HGT). These findings highlight the importance of carefully considering the potential risks associated with low organic loading strategies in wastewater treatment processes.
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Affiliation(s)
- Chongjun Zhang
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, China
| | - Shaoran Li
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, China
| | - Haoran Sun
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, China
| | - Xiaoshuang Li
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, China
| | - Liang Fu
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, China
| | - Chaofan Zhang
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, China
| | - Shijun Sun
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, China.
| | - Dandan Zhou
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, China.
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17
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Souza JADM, Gubiani JR, de Siqueira KA, de Camargo MJ, Garcez WS, de Sousa PT, Soares MA, Araújo ÂR, Nunes EVDS, Vieira LCC, Sampaio OM, Goulart LS, Biasetto CR, de Menezes OT, de Oliveira CM, Nogueira CR, Pinto LDS, Teles HL. Antimicrobial metabolites produced by endophytic fungi associated with the leaves of Vochysia divergens. Nat Prod Res 2024; 38:978-985. [PMID: 37154616 DOI: 10.1080/14786419.2023.2208723] [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: 09/26/2022] [Accepted: 04/25/2023] [Indexed: 05/10/2023]
Abstract
Investigation of the endophytic fungi Nigrospora sphaerica, Nigrospora oryzae, and Pseudofusicoccum stromaticum MeOH fractions isolated from the leaves of Vochysia divergens, a medicinal species from the Brazilian Pantanal, led to the identification of five compounds, namely a new compound (1E,8Z)-10,11-dihydroxy-5,5,8-trimethyl-4-oxocycloundeca-1,8-diene-1-carbaldehyde (1) and four known compounds: 5-methylmellein (2), sclerone (3), daldinone A (4), and lasiodiplodin (5). All compounds were identified using spectroscopic methods, and 1 was corroborated with mass spectrometry, while the known compounds were compared with data in the literature. The relative configuration of compound 1 was determined based on theoretical conformational studies as well as the J experimental values between the hydroxymethyne hydrogens. The antimicrobial activity of the compounds was evaluated. Promising results were obtained for compounds 2, 4, and 5 since they inhibited the bacterium Pseudomonas aeruginosa, an opportunistic pathogen, suggesting the potential of these microorganisms as a source of new antibacterial agents.
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Affiliation(s)
| | - Juliana R Gubiani
- Institute of Chemistry of São Carlos, São Paulo University, São Carlos, Brazil
| | | | | | - Walmir S Garcez
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Paulo T de Sousa
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Marcos A Soares
- Institute of Biosciences, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Ângela R Araújo
- Institute of Chemistry, Department of Biochemistry and Organic Chemistry, NuBBE, São Paulo State University, Araraquara, Brazil
| | - Emanuel V Dos S Nunes
- Institute of Chemistry, Department of Biochemistry and Organic Chemistry, NuBBE, São Paulo State University, Araraquara, Brazil
| | - Lucas C C Vieira
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Olívia M Sampaio
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Letícia S Goulart
- Faculty of Health Sciences, Federal University of Rondonópolis, Rondonópolis, Brazil
| | - Carolina R Biasetto
- Institute of Chemistry, Department of Biochemistry and Organic Chemistry, NuBBE, São Paulo State University, Araraquara, Brazil
| | - Orivaldo T de Menezes
- Institute of Exact Sciences and Technology, Federal University of Amazonas, Itacoatiara, Brazil
| | - Camila M de Oliveira
- Institute of Exact and Natural Sciences, Federal University of Rondonópolis, Rondonópolis, Brazil
| | - Cláudio R Nogueira
- Faculty of Exact Sciences and Technology, Federal University of Grande Dourados, Dourados, Brazil
| | - Luciano da S Pinto
- Department of Chemistry, Federal University of São Carlos, São Carlos, Brazil
| | - Helder L Teles
- Institute of Exact and Natural Sciences, Federal University of Rondonópolis, Rondonópolis, Brazil
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18
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Liu L, Sun Y, Du S, Li Y, Wang J. Nanoplastics promote the dissemination of antibiotic resistance genes and diversify their bacterial hosts in soil. ECO-ENVIRONMENT & HEALTH (ONLINE) 2024; 3:1-10. [PMID: 38187015 PMCID: PMC10767152 DOI: 10.1016/j.eehl.2023.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 09/19/2023] [Accepted: 09/26/2023] [Indexed: 01/09/2024]
Abstract
The wide application of plastics has led to the ubiquitous presence of nanoplastics and microplastics in terrestrial environments. However, few studies have focused on the mechanism underlying the effects of plastic particles on soil microbiomes and resistomes, especially the differences between nanoplastics and microplastics. This study investigated the microbiome and resistome in soil exposed to polystyrene microplastics (mPS) or nanoplastics (nPS) through 16S rRNA and shotgun metagenomic sequencing. Distinct microbial communities were observed between mPS and nPS exposure groups, and nPS exposure significantly changed the bacterial composition even at the lowest amended rate (0.01%, w/w). The abundance of antibiotic resistance genes (ARGs) in nPS exposure (1%) was 0.26 copies per cell, significantly higher than that in control (0.21 copies per cell) and mPS exposure groups (0.21 copies per cell). It was observed that nanoplastics, bacterial community, and mobile genetic elements (MGEs) directly affected the ARG abundance in nPS exposure groups, while in mPS exposure groups, only MGEs directly induced the change of ARGs. Streptomyces was the predominant host for multidrug in the control and mPS exposure, whereas the primary host was changed to Bacillus in nPS exposure. Additionally, exposure to nPS induced several bacterial hosts to exhibit possible multi-antibiotic resistance characteristics. Our results indicated that the effects of plastic particles on the soil microbial community were size-dependent, and nano-sized plastic particles exhibited more substantial impacts. Both microplastics and nanoplastics promoted ARG transfer and diversified their bacterial hosts. These findings bear implications for the regulation of plastic waste and ARGs.
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Affiliation(s)
- Lijuan Liu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou 310015, China
| | - Yuanze Sun
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Shaoting Du
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou 310015, China
| | - Yanming Li
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Jie Wang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
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19
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Luo M, Li S, Luo W. Comparative analysis of antibiotic susceptibility patterns and clinical features of mucoid and non-mucoid Pseudomonas aeruginosa infections: a retrospective study. Front Public Health 2024; 12:1333477. [PMID: 38389944 PMCID: PMC10881668 DOI: 10.3389/fpubh.2024.1333477] [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: 11/05/2023] [Accepted: 01/24/2024] [Indexed: 02/24/2024] Open
Abstract
Background Pseudomonas aeruginosa (PA) is a prevalent opportunistic pathogen that has close associations with both acute and chronic infections. However, there exists an insufficiency of accurate and comprehensive data pertaining to the antimicrobial susceptibility patterns and clinical characteristics of both mucoid and non-mucoid strains of PA (mPA and non-mPA, respectively). Methods From January 1, 2021 to December 31, 2022, a thorough retrospective study was carried out to examine and compare the antibiotic susceptibility test outcomes and clinical characteristics of hospitalized patients with mPA and non-mPA infections. Results This study investigated a cohort of 111 patients who were diagnosed with mPA infections, as well as 792 patients diagnosed with non-mPA infections. Significant demographic disparities, including gender (p < 0.001), age (p < 0.001), length of hospital stay (p < 0.001), diabetes (p = 0.043), and hypertension (p < 0.001), are evident between the mPA and non-mPA groups. The mPA group commonly necessitates hospitalization for respiratory system diseases, whereas the non-mPA group is associated with concomitant cardiovascular and cerebrovascular diseases. The mPA group demonstrates lower utilization rates of medical devices, such as Foley catheter (p < 0.001), nasogastric tube (p < 0.001), mechanical ventilation (p < 0.001), tracheostomy (p < 0.001), arterial and venous catheterization (p < 0.001), and exhibits superior organ function status, including lower incidences of hypoalbuminemia (p < 0.001), septic shock (p < 0.001), liver dysfunction (p < 0.001), renal failure (p < 0.001), and respiratory failure (p < 0.001). The non-mPA group is more vulnerable to infection with two or more bacterial pathogens compared to the mPA group, with the non-mPA group frequently resulting in Enterobacteriaceae infections and the mPA group being associated with fungal infections. Variations in antibiotic sensitivity are noted for Amikacin (p < 0.001), Ciprofloxacin (p < 0.001), Cefepime (p = 0.003), and Levofloxacin (p < 0.001) in antibiotic susceptibility testing, with resistance patterns closely tied to specific antibiotic usage. Conclusion There are significant demographic characteristics, clinical manifestations and antibiotic susceptibility between mPA and non-mPA infections. It is crucial to emphasize these characteristics due to their significant role in preventing and treating PA infections.
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Affiliation(s)
- Maoling Luo
- Medical Laboratory Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Si Li
- General Medicine, Clinical Medicine, Kangda College of Nanjing Medical University, Lianyungang, Jiangsu, China
| | - Wenying Luo
- Medical Laboratory Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
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20
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Yang H, Liu A, Ma F, Gao X, Wang K, Wang Y. Establishment of portable Pseudomonas aeruginosa detection platform based on one-tube CRISPR/Cas12a combined with recombinase polymerase amplification technology. Clin Chim Acta 2024; 554:117760. [PMID: 38176521 DOI: 10.1016/j.cca.2024.117760] [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: 11/01/2023] [Revised: 12/07/2023] [Accepted: 01/01/2024] [Indexed: 01/06/2024]
Abstract
Pseudomonas aeruginosa, a common Gram-negative bacterium, is associated with diverse diseases. Its increasing resistance to antibiotics presents challenges in clinical treatment. The predominant diagnostic approach involves conventional biochemical cultures, known for their time and labor intensiveness. Despite progress in isothermal amplification studies, limitations persist, including reliance on specialized equipment, intricate primer design, and aerosol contamination. Therefore, there is a demand for enhanced clinical assays. This study successfully combined RPA and CRISPR/Cas12a techniques. Through a series of experiments involving the design and screening of lasB crRNA, the creation of lasB RPA primers, and the establishment of a streamlined RPA-CRISPR/Cas12a assay, the study developed a one-tube detection method targeting P. aeruginosa's lasB gene. The assay demonstrated inclusive behavior across standard and 21 isolates, while specifically discerning P. aeruginosa from diverse strains. Sensitivity reached 15.9 CFU/reaction. Clinical validation revealed a 97.62% concordance with traditional methods. The one-tube assay's protocol mitigated aerosol contamination. Offering precision, specificity, and sensitivity, this method shows promise for field applications in resource-scarce regions, enabling early detection and improved management of P. aeruginosa infections.
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Affiliation(s)
- Haitao Yang
- Department of Medicine Laboratory, The Second People's Hospital of Lianyungang Affiliated to Kangda College of Nanjing Medical University, The Second People's Hospital of Lianyungang City, Lianyungang 222000, China; Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Aibo Liu
- Department of Laboratory Medicine and Sichuan Provincial Key Laboratory for Human Disease Gene Study, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Fenfen Ma
- Department of Medicine Laboratory, The Second People's Hospital of Lianyungang Affiliated to Kangda College of Nanjing Medical University, The Second People's Hospital of Lianyungang City, Lianyungang 222000, China
| | - Xuzhu Gao
- Department of Medicine Laboratory, The Second People's Hospital of Lianyungang Affiliated to Kangda College of Nanjing Medical University, The Second People's Hospital of Lianyungang City, Lianyungang 222000, China
| | - Kun Wang
- Department of Medicine Laboratory, The Second People's Hospital of Lianyungang Affiliated to Kangda College of Nanjing Medical University, The Second People's Hospital of Lianyungang City, Lianyungang 222000, China
| | - Yan Wang
- Department of Medicine Laboratory, The Second People's Hospital of Lianyungang Affiliated to Kangda College of Nanjing Medical University, The Second People's Hospital of Lianyungang City, Lianyungang 222000, China.
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21
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Almaghrabi RS, Macori G, Sheridan F, McCarthy SC, Floss-Jones A, Fanning S, Althawadi S, Mutabagani M, Binsaslloum A, Alrasheed M, Almohaizeie A, Allehyani B, Alghofaili A, Bohol MF, Al-Qahtani AA. Whole genome sequencing of resistance and virulence genes in multi-drug resistant Pseudomonas aeruginosa. J Infect Public Health 2024; 17:299-307. [PMID: 38154433 DOI: 10.1016/j.jiph.2023.12.012] [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: 10/15/2022] [Revised: 10/19/2023] [Accepted: 12/14/2023] [Indexed: 12/30/2023] Open
Abstract
BACKGROUND Pseudomonas aeruginosa is an opportunistic bacterium that causes serious hospital-acquired infections. To assess the risk of clinically isolated P. aeruginosa to human health, we analyzed the resistance and virulence mechanisms of a collection of clinical isolates. METHODS This was a retrospective study in which P. aeruginosa isolates collected from January 1, 2018 to August 31, 2019 were analyzed using phenotypic and whole-genome sequencing (WGS) methods. The analysis included 48 clinical samples. Median patient age was 54.0 (29.5) years, and 58.3% of patients were women. Data from the microbiology laboratory database were reviewed to identify P. aeruginosa isolates. All unique isolates available for further testing were included, and related clinical data were collected. Infections were defined as hospital acquired if the index culture was obtained at least 48 h after hospitalization. RESULTS High-risk P. aeruginosa clones, including sequence types (STs) ST235 and ST111, were identified, in addition to 12 new STs. The isolates showed varying degrees of biofilm formation ability when evaluated at room temperature, along with reduced metabolic activity, as measured by metabolic staining, suggesting their ability to evade antimicrobial therapy. Most isolates (77.1%) were multidrug resistant (MDR), with the highest resistance and susceptibility rates to beta-lactams and colistimethate sodium, respectively. CONCLUSIONS The MDR phenotypes of the examined isolates can be explained by the high prevalence of efflux-mediated resistance- and hydrolytic enzyme-encoding genes. These isolates had high cytotoxic potential, as indicated by the detection of toxin production-related genes.
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Affiliation(s)
- Reem S Almaghrabi
- Section of Transplant Infectious Diseases, Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | | | | | | | | | | | - Sahar Althawadi
- Section of Microbiology Laboratory, Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Maysoon Mutabagani
- Section of Microbiology Laboratory, Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Abdulaziz Binsaslloum
- Section of Microbiology Laboratory, Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Mai Alrasheed
- Section of Microbiology Laboratory, Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Abdullah Almohaizeie
- Pharmaceutical Care Division, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Batol Allehyani
- Pharmaceutical Care Division, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Alnajla Alghofaili
- Pharmaceutical Care Division, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Marie F Bohol
- Department of Infection and Immunity, Research Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Ahmed A Al-Qahtani
- Department of Infection and Immunity, Research Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia; Department of Microbiology and Immunology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia.
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22
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Xiong GX, Hammoor BT, Simpson AK, Hershman SH. Use of vancomycin and gentamicin-impregnated calcium sulfate beads for the prevention of surgical site infection in adult spinal deformity. Spine J 2024; 24:330-332. [PMID: 37890726 DOI: 10.1016/j.spinee.2023.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 08/25/2023] [Accepted: 10/14/2023] [Indexed: 10/29/2023]
Affiliation(s)
- Grace X Xiong
- Harvard Combined Orthopaedic Residency Program, 55 Fruit Street, Boston, MA, 02114, USA
| | - Bradley T Hammoor
- Harvard Combined Orthopaedic Residency Program, 55 Fruit Street, Boston, MA, 02114, USA
| | - Andrew K Simpson
- Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA
| | - Stuart H Hershman
- Massachusetts General Hospital, Yawkey 3A, 55 Fruit St., Boston, MA, 02114, USA.
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23
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Abdelmalek S, Hajar M, Salah L, Abdel-Halim H. In Silico Screening and Experimental Validation of Novel MexAB-OprM Efflux Pump Inhibitors of Pseudomonas aeruginosa. Microb Drug Resist 2024; 30:73-81. [PMID: 38150012 DOI: 10.1089/mdr.2023.0126] [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: 12/28/2023] Open
Abstract
The emergence of multidrug-resistant Pseudomonas aeruginosa possesses a significant public health concern. Constitutively expressed MexAB-OprM efflux pumps in P. aeruginosa significantly contribute to its resistance to a variety of antibiotics. The development of efflux pump inhibitors (EPIs) has emerged as an attractive strategy in reversing antibiotic resistance. In this study, structure-based virtual screening techniques were used for the identification of new MexAB-OprM efflux inhibitors. The predicted poses were thoroughly filtered by induced fit docking procedures followed by in vitro microbiological assays for the validation of in silico results. Two compounds, NSC-147850 and NSC-112703, were able to restore tetracycline susceptibility in MexAB-OprM overexpressing Pseudomonas aeruginosa ATCC® 27853™ strain. This correlation observed between in silico screening and positive efflux inhibitory activity in vitro suggests that NSC-147850 and NSC-112703 have potential as EPIs and may be effective in combination therapy against drug-resistant strains of P. aeruginosa.
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Affiliation(s)
- Suzanne Abdelmalek
- Department of Pharmacology and Biomedical Sciences, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
| | - Malak Hajar
- Health Data Science Lab, Department of Genetics and Genomics, College of Medical and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Luma Salah
- Department of Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
| | - Heba Abdel-Halim
- Department of Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
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24
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Bloomfield SJ, Palau R, Holden ER, Webber MA, Mather AE. Genomic characterization of Pseudomonas spp. on food: implications for spoilage, antimicrobial resistance and human infection. BMC Microbiol 2024; 24:20. [PMID: 38212698 PMCID: PMC10782663 DOI: 10.1186/s12866-023-03153-9] [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: 07/09/2023] [Accepted: 12/11/2023] [Indexed: 01/13/2024] Open
Abstract
BACKGROUND Pseudomonas species are common on food, but their contribution to the antimicrobial resistance gene (ARG) burden within food or as a source of clinical infection is unknown. Pseudomonas aeruginosa is an opportunistic pathogen responsible for a wide range of infections and is often hard to treat due to intrinsic and acquired ARGs commonly carried by this species. This study aimed to understand the potential role of Pseudomonas on food as a reservoir of ARGs and to assess the presence of potentially clinically significant Pseudomonas aeruginosa strains on food. To achieve this, we assessed the genetic relatedness (using whole genome sequencing) and virulence of food-derived isolates to those collected from humans. RESULTS A non-specific culturing approach for Pseudomonas recovered the bacterial genus from 28 of 32 (87.5%) retail food samples, although no P. aeruginosa was identified. The Pseudomonas species recovered were not clinically relevant, contained no ARGs and are likely associated with food spoilage. A specific culture method for P. aeruginosa resulted in the recovery of P. aeruginosa from 14 of 128 (11%) retail food samples; isolates contained between four and seven ARGs each and belonged to 16 sequence types (STs), four of which have been isolated from human infections. Food P. aeruginosa isolates from these STs demonstrated high similarity to human-derived isolates, differing by 41-312 single nucleotide polymorphisms (SNPs). There were diverse P. aeruginosa collected from the same food sample with distinct STs present on some samples and isolates belonging to the same ST differing by 19-67 SNPs. The Galleria mellonella infection model showed that 15 of 16 STs isolated from food displayed virulence between a low-virulence (PAO1) and a high virulence (PA14) control. CONCLUSION The most frequent Pseudomonas recovered from food examined in this study carried no ARGs and are more likely to play a role in food spoilage rather than infection. P. aeruginosa isolates likely to be able to cause human infections and with multidrug resistant genotypes are present on a relatively small but still substantial proportions of retail foods examined. Given the frequency of exposure, the potential contribution of food to the burden of P. aeruginosa infections in humans should be evaluated more closely.
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Affiliation(s)
| | - Raphaёlle Palau
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | - Emma R Holden
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | - Mark A Webber
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
- University of East Anglia, Norwich, UK
| | - Alison E Mather
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK.
- University of East Anglia, Norwich, UK.
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25
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Fihn CA, Lembke HK, Gaulin J, Bouchard P, Villarreal AR, Penningroth MR, Crone KK, Vogt GA, Gilbertsen AJ, Ayotte Y, de Oliveira LC, Serrano-Wu MH, Drouin N, Hung DT, Hunter RC, Carlson EE. Evaluation of Expanded 2-Aminobenzothiazole Library for Inhibition of Pseudomonas aeruginosa Virulence Phenotypes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.05.02.539119. [PMID: 37205454 PMCID: PMC10187220 DOI: 10.1101/2023.05.02.539119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Bacterial resistance to antibiotics is a rapidly increasing threat to human health. New strategies to combat resistant organisms are desperately needed. One potential avenue is targeting two-component systems, which are the main bacterial signal transduction pathways used to regulate development, metabolism, virulence, and antibiotic resistance. These systems consist of a homodimeric membrane-bound sensor histidine kinase, and a cognate effector, the response regulator. The high sequence conservation in the catalytic and adenosine triphosphate-binding (CA) domain of histidine kinases and their essential role in bacterial signal transduction could enable broad-spectrum antibacterial activity. Through this signal transduction, histidine kinases regulate multiple virulence mechanisms including toxin production, immune evasion, and antibiotic resistance. Targeting virulence, as opposed to development of bactericidal compounds, could reduce evolutionary pressure for acquired resistance. Additionally, compounds targeting the CA domain have the potential to impair multiple two-component systems that regulate virulence in one or more pathogens. We conducted structure-activity relationship studies of 2-aminobenzothiazole-based inhibitors designed to target the CA domain of histidine kinases. We found these compounds have anti-virulence activities in Pseudomonas aeruginosa, reducing motility phenotypes and toxin production associated with the pathogenic functions of this bacterium.
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Affiliation(s)
- Conrad A. Fihn
- Department of Medicinal Chemistry, University of Minnesota, 308 Harvard Street SE, Minneapolis, Minnesota 55455, United States
| | - Hannah K. Lembke
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55454, United States
| | - Jeffrey Gaulin
- The Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Patricia Bouchard
- NMX Research and Solution Inc., 500 Cartier Boulevard W., Suite 6000, Laval, Quebec, Canada, H1Y 2R1
| | - Alex R. Villarreal
- Department of Microbiology & Immunology, University of Minnesota, 689 23rd Ave Se Minneapolis, Minnesota 55455, United States
| | - Mitchell R. Penningroth
- Department of Microbiology & Immunology, University of Minnesota, 689 23rd Ave Se Minneapolis, Minnesota 55455, United States
| | - Kathryn K. Crone
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, 321 Church Street SE, Minneapolis, Minnesota 55455, United States
| | - Grace A. Vogt
- Department of Microbiology & Immunology, University of Minnesota, 689 23rd Ave Se Minneapolis, Minnesota 55455, United States
| | - Adam J. Gilbertsen
- Department of Microbiology & Immunology, University of Minnesota, 689 23rd Ave Se Minneapolis, Minnesota 55455, United States
| | - Yann Ayotte
- NMX Research and Solution Inc., 500 Cartier Boulevard W., Suite 6000, Laval, Quebec, Canada, H1Y 2R1
| | | | | | - Nathalie Drouin
- NMX Research and Solution Inc., 500 Cartier Boulevard W., Suite 6000, Laval, Quebec, Canada, H1Y 2R1
| | - Deborah T. Hung
- The Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Ryan C. Hunter
- Department of Microbiology & Immunology, University of Minnesota, 689 23rd Ave Se Minneapolis, Minnesota 55455, United States
| | - Erin E. Carlson
- Department of Medicinal Chemistry, University of Minnesota, 308 Harvard Street SE, Minneapolis, Minnesota 55455, United States
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55454, United States
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, 321 Church Street SE, Minneapolis, Minnesota 55455, United States
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26
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Ghosh S, Sett U, Pal A, Nandy S, Nandi S, Chakrabarty S, Das A, Bandopadhyay P, Basu T. Antibiofilm potential of nanonized eugenol against Pseudomonas aeruginosa. J Appl Microbiol 2024; 135:lxad305. [PMID: 38093454 DOI: 10.1093/jambio/lxad305] [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: 06/19/2023] [Revised: 12/03/2023] [Accepted: 12/12/2023] [Indexed: 01/03/2024]
Abstract
AIMS The purpose of this study was to synthesize a nanoform of eugenol (an important phytochemical with various pharmacological potentials) and to investigate its antibiofilm efficacy on Pseudomonas aeruginosa biofilm. METHODS AND RESULTS Colloidal suspension of eugenol-nanoparticles (ENPs) was synthesized by the simple ultrasonic cavitation method through the emulsification of hydrophobic eugenol into hydrophilic gelatin. Thus, the nanonization process made water-insoluble eugenol into water-soluble nano-eugenol, making the nanoform bioavailable. The size of the ENPs was 20-30 nm, entrapment efficiency of eugenol within gelatin was 80%, and release of eugenol from the gelatin cap was slow and sustained over 5 days. Concerning the clinically relevant pathogen P. aeruginosa, ENPs had higher antibiofilm (for both formation and eradication) activities than free eugenol. Minimal biofilm inhibitory concentration and minimal biofilm eradication concentration of ENP on P. aeruginosa biofilm were 2.0 and 4.0 mM, respectively. In addition, the measurement of P. aeruginosa biofilm biomass, biofilm thickness, amount of biofilm extra-polymeric substance, cell surface hydrophobicity, cell swarming and twitching efficiencies, cellular morphology, and biofilm formation in catheter demonstrated that the antibiofilm efficacy of nano-eugenol was 30%-40% higher than that of bulk eugenol. CONCLUSION These results signify that future pharmacological and clinical studies are very much required to investigate whether ENPs can act as an effective drug against P. aeruginosa biofilm-mediated diseases. Thus, the problem of intrinsic antibiotic tolerance of biofilm-forming cells may be minimized by ENPs. Moreover, ENP may be used as a potential catheter-coating agent to inhibit pseudomonal colonization on catheter surfaces and, therefore, to reduce catheter-associated infections and complications.
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Affiliation(s)
- Sourav Ghosh
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Upasana Sett
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Anabadya Pal
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Sanchita Nandy
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Susmita Nandi
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Soumajit Chakrabarty
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Abhijit Das
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Pathikrit Bandopadhyay
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Tarakdas Basu
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
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Wang S, Ma C, Long J, Cheng P, Zhang Y, Peng L, Fu L, Yu Y, Xu D, Zhang S, Qiu J, He Y, Yang H, Chen H. Impact of CRAMP-34 on Pseudomonas aeruginosa biofilms and extracellular metabolites. Front Cell Infect Microbiol 2023; 13:1295311. [PMID: 38162583 PMCID: PMC10757720 DOI: 10.3389/fcimb.2023.1295311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 11/30/2023] [Indexed: 01/03/2024] Open
Abstract
Biofilm is a structured community of bacteria encased within a self-produced extracellular matrix. When bacteria form biofilms, they undergo a phenotypic shift that enhances their resistance to antimicrobial agents. Consequently, inducing the transition of biofilm bacteria to the planktonic state may offer a viable approach for addressing infections associated with biofilms. Our previous study has shown that the mouse antimicrobial peptide CRAMP-34 can disperse Pseudomonas aeruginosa (P. aeruginosa) biofilm, and the potential mechanism of CRAMP-34 eradicate P. aeruginosa biofilms was also investigated by combined omics. However, changes in bacterial extracellular metabolism have not been identified. To further explore the mechanism by which CRAMP-34 disperses biofilm, this study analyzed its effects on the extracellular metabolites of biofilm cells via metabolomics. The results demonstrated that a total of 258 significantly different metabolites were detected in the untargeted metabolomics, of which 73 were downregulated and 185 were upregulated. Pathway enrichment analysis of differential metabolites revealed that metabolic pathways are mainly related to the biosynthesis and metabolism of amino acids, and it also suggested that CRAMP-34 may alter the sensitivity of biofilm bacteria to antibiotics. Subsequently, it was confirmed that the combination of CRAMP-34 with vancomycin and colistin had a synergistic effect on dispersed cells. These results, along with our previous findings, suggest that CRAMP-34 may promote the transition of PAO1 bacteria from the biofilm state to the planktonic state by upregulating the extracellular glutamate and succinate metabolism and eventually leading to the dispersal of biofilm. In addition, increased extracellular metabolites of myoinositol, palmitic acid and oleic acid may enhance the susceptibility of the dispersed bacteria to the antibiotics colistin and vancomycin. CRAMP-34 also delayed the development of bacterial resistance to colistin and ciprofloxacin. These results suggest the promising development of CRAMP-34 in combination with antibiotics as a potential candidate to provide a novel therapeutic approach for the prevention and treatment of biofilm-associated infections.
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Affiliation(s)
- Shiyuan Wang
- College of Veterinary Medicine, Southwest University, Chongqing, China
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Chengjun Ma
- College of Veterinary Medicine, Southwest University, Chongqing, China
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
- Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China
| | - Jinying Long
- College of Veterinary Medicine, Southwest University, Chongqing, China
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
- Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China
| | - Peng Cheng
- College of Veterinary Medicine, Southwest University, Chongqing, China
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
| | - Yang Zhang
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
- Institute of Veterinary Medicine Academy of Animal Sciences, Chongqing, China
| | - Lianci Peng
- College of Veterinary Medicine, Southwest University, Chongqing, China
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
- Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China
| | - Lizhi Fu
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
- Institute of Veterinary Medicine Academy of Animal Sciences, Chongqing, China
| | - Yuandi Yu
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
- Institute of Veterinary Medicine Academy of Animal Sciences, Chongqing, China
| | - Dengfeng Xu
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
- Institute of Veterinary Medicine Academy of Animal Sciences, Chongqing, China
| | - Suhui Zhang
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
- Institute of Veterinary Medicine Academy of Animal Sciences, Chongqing, China
| | - Jinjie Qiu
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
- Institute of Veterinary Medicine Academy of Animal Sciences, Chongqing, China
| | - Yuzhang He
- College of Veterinary Medicine, Southwest University, Chongqing, China
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
- Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China
| | - Hongzao Yang
- College of Veterinary Medicine, Southwest University, Chongqing, China
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
- Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China
| | - Hongwei Chen
- College of Veterinary Medicine, Southwest University, Chongqing, China
- Collaborative Innovation Institute National Center of Technology Innovation for Pigs, Chongqing, China
- Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China
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Tan X, Cheng X, Xiao J, Liu Q, Du D, Li M, Sun Y, Zhou J, Zhu G. Alkaline phosphatase LapA regulates quorum sensing-mediated virulence and biofilm formation in Pseudomonas aeruginosa PAO1 under phosphate depletion stress. Microbiol Spectr 2023; 11:e0206023. [PMID: 37796007 PMCID: PMC10715133 DOI: 10.1128/spectrum.02060-23] [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: 05/16/2023] [Accepted: 08/19/2023] [Indexed: 10/06/2023] Open
Abstract
IMPORTANCE Our previous study demonstrated that the expression of lapA was induced under phosphate depletion conditions, but its roles in virulence and biofilm formation by Pseudomonas aeruginosa remain largely unknown. This study presents a systematic investigation of the roles of lapA in virulence induction and biofilm formation by constructing a lapA-deficient strain with P. aeruginosa PAO1. The results showed that deletion of the lapA gene evidently reduced elastase activity, swimming motility, C4-HSL, and 3-oxo-C12-HSL production, and increased rhamnolipid production under phosphate depletion stress. Moreover, lapA gene deletion inhibited PAO1 biofilm formation in porcine skin explants by reducing the expression levels of las and rhl quorum sensing systems and extracellular polymeric substance synthesis. Finally, lapA gene deletion also reduced the virulence of PAO1 in Caenorhabditis elegans in fast-kill and slow-kill infection assays. This study provides insights into the roles of lapA in modulating P. aeruginosa virulence and biofilm formation under phosphate depletion stress.
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Affiliation(s)
- Xiaojuan Tan
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui, China
| | - Xi Cheng
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui, China
| | - Jingjing Xiao
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui, China
| | - Qianqian Liu
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui, China
| | - Dongsheng Du
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui, China
| | - Minghui Li
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui, China
| | - Yang Sun
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui, China
| | - Jinwei Zhou
- School of Food and Biology Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu, China
| | - Guoping Zhu
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui, China
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Zhou L, Yang C, Zhang X, Yao J, Chen L, Tu Y, Li X. Characterization of a novel Tn6485h transposon carrying both blaIMP-45 and blaAFM-1 integrated into the IncP-2 plasmid in a carbapenem-resistant Pseudomonas aeruginosa. J Glob Antimicrob Resist 2023; 35:307-313. [PMID: 37879457 DOI: 10.1016/j.jgar.2023.10.010] [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: 08/14/2023] [Revised: 09/21/2023] [Accepted: 10/14/2023] [Indexed: 10/27/2023] Open
Abstract
OBJECTIVES To characterize a carbapenem-resistant Pseudomonas aeruginosa (CRPA) with an IncP-2 plasmid containing a novel transposon, Tn6485h, which carries both blaIMP-45 and blaAFM-1. METHODS Antimicrobial susceptibility testing and filter mating experiment were performed on PA942. The stability of the plasmid carrying both blaIMP-45 and blaAFM-1 was carried out. We determined the growth rate of the transconjugant to investigate fitness cost. Additionally, whole-genome sequencing and genomic analysis were performed on PA942. RESULTS PA942 strain was resistant to most antibiotics except for ciprofloxacin and colistin. Bioinformatics analysis confirmed that PA942 contains an IncP-2 plasmid with a novel transposon Tn6485h carrying both blaIMP-45 and blaAFM-1. The plasmid pPA942-IMP45 can be transferred into recipient bacteria PAO1Rif with an efficiency of 2.2 × 10-7 and the transconjugant PAO1Rif/ pPA942-IMP45 can be stably inherited for 10 generations in the absence of antibiotics. CONCLUSION We report a carbapenem-resistant P. aeruginosa strain with an IncP-2 plasmid containing a novel transposon, Tn6485h, which carries both blaIMP-45 and blaAFM-1. The IncP-2 plasmid and transposon Tn6485h may contribute to the spread of MBL genes. Therefore, effective measures to prevent the spread of these plasmids should be taken.
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Affiliation(s)
- Longjie Zhou
- Centre of Laboratory Medicine, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Chuanxin Yang
- Department of Laboratory Medicine, Affiliated Sixth People's Hospital South Campus, Shanghai Jiaotong University, Shanghai, China
| | - Xiaofan Zhang
- Centre of Laboratory Medicine, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Jiayao Yao
- Centre of Laboratory Medicine, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Lingxia Chen
- Centre of Laboratory Medicine, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Yuexing Tu
- Department of Critical Care Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China.
| | - Xi Li
- Centre of Laboratory Medicine, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China.
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Yan Z, Xia L, Xu X, Ma B, Yuan X, Yang K, Li K, Ye X, Zhang L, Chen T. Exploring calcium channel blocker as a candidate drug for Pseudomonas aeruginosa through network pharmacology and experimental validation. Chem Biol Drug Des 2023; 102:1353-1366. [PMID: 37599112 DOI: 10.1111/cbdd.14322] [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: 12/26/2022] [Revised: 07/11/2023] [Accepted: 08/07/2023] [Indexed: 08/22/2023]
Abstract
Calcium channel blocker (CCB) is known to possess antibacterial effects. We aimed to apply network pharmacology (docking and protein-protein interaction [PPI] analyses) to predict the potential targets and mechanisms of CCB against Pseudomonas aeruginosa (PA) as well as to verify the effect of these drugs. The chemical structures of three CCBs were obtained through the Drug Bank platform. The potential channel proteins, efflux pump proteins and ion channel proteins of CCB against bacteria were derived from the literature. These proteins were collected through the PDB and Uniprot platform. The binding mode of the docking complexes was simulated by the CB-Dock platform and Discovery Studio 2019 Client software. The PPI network was constructed by the String platform and Cytoscape 3.8.2 platform. GO was explained by the PANTHER platform. The pathway diagram was drawn with the Pathway Builder Tool 2.0 software. The inhibitory effect of CCB on PA was verified through antibacterial experiments. Finally, 76 proteins were obtained: the iron channel protein of PA demonstrated a good docking relationship with all three CCBs, and the optimum binding energy was approximately -9.0 kcal/mol. GO analysis (biological process [BP], cellular component [CC], and molecular function [MF]) of protein genes showed a good docking relationship (optimum binding energy <-8.0 kcal/mol). The MF annotation results indicated that the target of CCB may be present on the PA membrane protein. The ion channel protein PPI enrichment p-value was 6.65e-08, and PfeA showed the strongest correlation. The experimental results suggested that CCB could inhibit the growth of PA. CCB might be an effective and interesting antimicrobial treatment strategy as CCB can potentially inhibit the growth of PA.
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Affiliation(s)
- Zijun Yan
- Department of Pharmacy, Panzhihua Central Hospital, Panzhihua, China
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Liangjing Xia
- Institute of Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Xingmeng Xu
- Department of Pharmacy, Panzhihua Central Hospital, Panzhihua, China
| | - Bingsuo Ma
- School of Pharmacy, Dali University, Dali, China
| | - Xiaoyan Yuan
- Department of Pharmacy, Panzhihua Central Hospital, Panzhihua, China
| | - Kun Yang
- School of Pharmacy, Dali University, Dali, China
| | - Kexin Li
- School of Pharmacy, Dali University, Dali, China
| | - Xianwen Ye
- Centre of TCM Processing Research, Beijing University of Chinese Medicine, Beijing, China
| | - Liangming Zhang
- Department of Pharmacy, Panzhihua Central Hospital, Panzhihua, China
| | - Tong Chen
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
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Jeong GJ, Khan F, Tabassum N, Kim YM. Natural and synthetic molecules with potential to enhance biofilm formation and virulence properties in Pseudomonas aeruginosa. Crit Rev Microbiol 2023:1-29. [PMID: 37968960 DOI: 10.1080/1040841x.2023.2282459] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 11/01/2023] [Indexed: 11/17/2023]
Abstract
Pseudomonas aeruginosa can efficiently adapt to changing environmental conditions due to its ubiquitous nature, intrinsic/acquired/adaptive resistance mechanisms, high metabolic versatility, and the production of numerous virulence factors. As a result, P. aeruginosa becomes an opportunistic pathogen, causing chronic infection in the lungs and several organs of patients suffering from cystic fibrosis. Biofilm established by P. aeruginosa in host tissues and medical device surfaces has been identified as a major obstruction to antimicrobial therapy. P. aeruginosa is very likely to be closely associated with the various microorganisms in the host tissues or organs in a pathogenic or nonpathogenic behavior. Aside from host-derived molecules, other beneficial and pathogenic microorganisms produce a diverse range of secondary metabolites that either directly or indirectly favor the persistence of P. aeruginosa. Thus, it is critical to understand how P. aeruginosa interacts with different molecules and ions in the host and abiotic environment to produce extracellular polymeric substances and virulence factors. Thus, the current review discusses how various natural and synthetic molecules in the environment induce biofilm formation and the production of multiple virulence factors.
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Affiliation(s)
- Geum-Jae Jeong
- Department of Food Science and Technology, Pukyong National University, Busan, Republic of Korea
| | - Fazlurrahman Khan
- Institute of Fisheries Sciences, Pukyong National University, Busan, Republic of Korea
- Marine Integrated Biomedical Technology Center, The National Key Research Institutes in Universities, Pukyong National University, Busan, Republic of Korea
- Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan, Republic of Korea
| | - Nazia Tabassum
- Marine Integrated Biomedical Technology Center, The National Key Research Institutes in Universities, Pukyong National University, Busan, Republic of Korea
- Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan, Republic of Korea
| | - Young-Mog Kim
- Department of Food Science and Technology, Pukyong National University, Busan, Republic of Korea
- Marine Integrated Biomedical Technology Center, The National Key Research Institutes in Universities, Pukyong National University, Busan, Republic of Korea
- Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan, Republic of Korea
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Ventero MP, Haro-Moreno JM, Molina-Pardines C, Sánchez-Bautista A, García-Rivera C, Boix V, Merino E, López-Pérez M, Rodríguez JC. Role of Relebactam in the Antibiotic Resistance Acquisition in Pseudomonas aeruginosa: In Vitro Study. Antibiotics (Basel) 2023; 12:1619. [PMID: 37998821 PMCID: PMC10668777 DOI: 10.3390/antibiotics12111619] [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: 09/26/2023] [Revised: 10/30/2023] [Accepted: 11/08/2023] [Indexed: 11/25/2023] Open
Abstract
BACKGROUND Pseudomonas aeruginosa shows resistance to several antibiotics and often develops such resistance during patient treatment. OBJECTIVE Develop an in vitro model, using clinical isolates of P. aeruginosa, to compare the ability of the imipenem and imipenem/relebactam to generate resistant mutants to imipenem and to other antibiotics. Perform a genotypic analysis to detect how the selective pressure changes their genomes. METHODS The antibiotics resistance was studied by microdilution assays and e-test, and the genotypic study was performed by NGS. RESULTS The isolates acquired resistance to imipenem in an average of 6 days, and to imipenem/relebactam in 12 days (p value = 0.004). After 30 days of exposure, 75% of the isolates reached a MIC > 64 mg/L for imipenem and 37.5% for imipenem/relebactam (p value = 0.077). The 37.5% and the 12.5% imipenem/relebactam mutants developed resistance to piperacillin/tazobactam and ceftazidime, respectively, while the 87.5% and 37.5% of the imipenem mutants showed resistance to these drugs (p value = 0.003, p value = 0.015). The main biological processes altered by the SNPs were the glycosylation pathway, transcriptional regulation, histidine kinase response, porins, and efflux pumps. DISCUSSION The addition of relebactam delays the generation of resistance to imipenem and limits the cross-resistance to other beta-lactams. The clinical relevance of this phenomenon, which has the limitation that it has been performed in vitro, should be evaluated by stewardship programs in clinical practice, as it could be useful in controlling multi-drug resistance in P. aeruginosa.
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Affiliation(s)
- Maria Paz Ventero
- Microbiology Department, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain; (M.P.V.); (A.S.-B.); (C.G.-R.); (J.C.R.)
| | - Jose M. Haro-Moreno
- Evolutionary Genomics Group, División de Microbiología, Universidad Miguel Hernández, Apartado 18, 03550 San Juan de Alicante, Spain
- Institut de Biologie Structurale J.-P. Ebel, Université Grenoble Alpes, 38000 Grenoble, France
| | - Carmen Molina-Pardines
- Microbiology Department, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain; (M.P.V.); (A.S.-B.); (C.G.-R.); (J.C.R.)
- Evolutionary Genomics Group, División de Microbiología, Universidad Miguel Hernández, Apartado 18, 03550 San Juan de Alicante, Spain
| | - Antonia Sánchez-Bautista
- Microbiology Department, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain; (M.P.V.); (A.S.-B.); (C.G.-R.); (J.C.R.)
| | - Celia García-Rivera
- Microbiology Department, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain; (M.P.V.); (A.S.-B.); (C.G.-R.); (J.C.R.)
| | - Vicente Boix
- Infectious Diseases Unit, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain
| | - Esperanza Merino
- Infectious Diseases Unit, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain
| | - Mario López-Pérez
- Evolutionary Genomics Group, División de Microbiología, Universidad Miguel Hernández, Apartado 18, 03550 San Juan de Alicante, Spain
| | - Juan Carlos Rodríguez
- Microbiology Department, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain; (M.P.V.); (A.S.-B.); (C.G.-R.); (J.C.R.)
- Evolutionary Genomics Group, División de Microbiología, Universidad Miguel Hernández, Apartado 18, 03550 San Juan de Alicante, Spain
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Sabt A, Abdelraof M, Hamissa MF, Noamaan MA. Antibacterial Activity of Quinoline-Based Derivatives against Methicillin-Resistant Staphylococcus aureus and Pseudomonas aeruginosa: Design, Synthesis, DFT and Molecular Dynamic Simulations. Chem Biodivers 2023; 20:e202300804. [PMID: 37933986 DOI: 10.1002/cbdv.202300804] [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: 06/01/2023] [Accepted: 10/05/2023] [Indexed: 11/08/2023]
Abstract
Bacterial virulence becomes a significant challenge for clinical treatments, particularly those characterized as Multi-Drug-Resistant (MDR) strains. Therefore, the preparation of new compounds with active moieties could be a successful approach for eradication of MDR strains. For this purpose, newly synthesized quinoline compounds were prepared and tested for their antimicrobial activity against Methicillin-Resistant Staphylococcus Aureus (MRSA) and Pseudomonas Aeruginosa (PA). Among the synthesized derivatives, compounds 1-(quinolin-2-ylamino)pyrrolidine-2,5-dione (8) and 2-(2-((5-methylfuran-2-yl)methylene)hydrazinyl)quinoline (12) were shown to possess the highest antimicrobial activity with the minimum inhibitory concentration with the values of 5±2.2 and10±1.5 μg/mL towards Pseudomonas aeruginosa without any activity towards MRSA. Interestingly, compounds 2-(2-((1H-indol-3-yl)methylene)hydrazinyl)quinoline (13) and 2-(4-bromophenyl)-3-(quinolin-2-ylamino)thiazolidin-4-one (16c) showed significant inhibition activity against Staphylococcus aureus MRSA and Pseudomonas aeruginosa. Compound 13 (with indole moiety) particularly displayed excellent bactericidal activity with low MIC values 20±3.3 and 10±1.5 μg/mL against Staphylococcus aureus MRSA and Pseudomonas aeruginosa, respectively. Effects molecular modelling was used to determine the mode of action for the antimicrobial effect. The stability of complexes formed by docking and target-ligand pairing was evaluated using molecular dynamics simulations. The compounds were also tested for binding affinity to the target protein using MM-PBSA. Density-functional theory (DFT) calculations were also used to investigate the electrochemical properties of various compounds.
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Affiliation(s)
- Ahmed Sabt
- Chemistry of Natural Compounds Department, Pharmaceutical and Drug Industries Research Institute, National Research Center, Dokki, Cairo, 12622, Egypt
| | - Mohamed Abdelraof
- Microbial Chemistry Department, Biotechnology Research Institute, National Research Center (NRC), 33 El Behouth St., Giza P.O., 12622, Egypt
| | - Mohamed Farouk Hamissa
- Department of Biomolecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences, Prague, Czech Republic
| | - Mahmoud A Noamaan
- Mathematics Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
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Hastings CJ, Keledjian MV, Musselman LP, Marques CNH. Delayed host mortality and immune response upon infection with P. aeruginosa persister cells. Infect Immun 2023; 91:e0024623. [PMID: 37732789 PMCID: PMC10580972 DOI: 10.1128/iai.00246-23] [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: 07/28/2023] [Accepted: 08/01/2023] [Indexed: 09/22/2023] Open
Abstract
Chronic infections are a heavy burden on healthcare systems worldwide. Persister cells are thought to be largely responsible for chronic infection due to their tolerance to antimicrobials and recalcitrance to innate immunity factors. Pseudomonas aeruginosa is a common and clinically relevant pathogen that contains stereotypical persister cells. Despite their importance in chronic infection, there have been limited efforts to study persister cell infections in vivo. Drosophila melanogaster has a well-described innate immune response similar to that of vertebrates and is a good candidate for the development of an in vivo model of infection for persister cells. Similar to what is observed in other bacterial strains, in this work we found that infection with P. aeruginosa persister cells resulted in a delayed mortality phenotype in Caenorhabditis elegans, Arabidopsis thaliana, and D. melanogaster compared to infection with regular cells. An in-depth characterization of infected D. melanogaster found that bacterial loads differed between persister and regular cells' infections during the early stages. Furthermore, hemocyte activation and antimicrobial peptide expression were delayed/reduced in persister infections over the same time course, indicating an initial suppression of, or inability to elicit, the fly immune response. Overall, our findings support the use of D. melanogaster as a model in which to study persister cells in vivo, where this bacterial subpopulation exhibits delayed virulence and an attenuated immune response.
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Affiliation(s)
- Cody J. Hastings
- Department of Biological Sciences, Binghamton University, Binghamton, New York, USA
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, New York, USA
| | - Maya V. Keledjian
- Department of Biological Sciences, Binghamton University, Binghamton, New York, USA
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, New York, USA
| | | | - Cláudia N. H. Marques
- Department of Biological Sciences, Binghamton University, Binghamton, New York, USA
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, New York, USA
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35
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Khan NA, Amorim FG, Dunbar JP, Leonard D, Redureau D, Quinton L, Dugon MM, Boyd A. Inhibition of bacterial biofilms by the snake venom proteome. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2023; 39:e00810. [PMID: 37559690 PMCID: PMC10407894 DOI: 10.1016/j.btre.2023.e00810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Snake venoms possess a range of pharmacological and toxicological activities. Here we evaluated the antibacterial and anti-biofilm activity against methicillin-susceptible and methicillin-resistant Staphylococcus aureus (MSSA and MRSA) of venoms from the Samar spitting cobra Naja samarensis and the Puff adder Bitis arietans. Both venoms prevented biofilm production by pathogenic S. aureus in a growth-independent manner, with the B. arietans venom being most potent. Fractionation showed the active molecule to be heat-labile and >10 kDa in size. Proteomic profiles of N. samarensis venom revealed neurotoxins and cytotoxins, as well as an abundance of serine proteases and three-finger toxins, while serine proteases, metalloproteinases and C-lectin types were abundant in B. arietans venom. These enzymes may have evolved to prevent bacteria colonising the snake venom gland. From a biomedical biotechnology perspective, they have valuable potential for anti-virulence therapy to fight antibiotic resistant microbes.
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Affiliation(s)
- Neyaz A. Khan
- Pathogenic Mechanisms Research Group, School of Natural Sciences, University of Galway, Ireland
| | | | - John P. Dunbar
- Venom Systems & Proteomics Lab, School of Natural Sciences, Ryan Institute, University of Galway, Ireland
| | - Dayle Leonard
- Pathogenic Mechanisms Research Group, School of Natural Sciences, University of Galway, Ireland
- Venom Systems & Proteomics Lab, School of Natural Sciences, Ryan Institute, University of Galway, Ireland
| | - Damien Redureau
- Mass Spectrometry Laboratory, MolSys RU, University of Liège, Belgium
| | - Loïc Quinton
- Mass Spectrometry Laboratory, MolSys RU, University of Liège, Belgium
| | - Michel M. Dugon
- Venom Systems & Proteomics Lab, School of Natural Sciences, Ryan Institute, University of Galway, Ireland
| | - Aoife Boyd
- Pathogenic Mechanisms Research Group, School of Natural Sciences, University of Galway, Ireland
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Yang H, Wang Y, Fan H, Liu F, Feng H, Li X, Chu M, Pan E, Teng D, Chen H, Dong J. Pseudomonas aeruginosa-induced mitochondrial dysfunction inhibits proinflammatory cytokine secretion and enhances cytotoxicity in mouse macrophages in a reactive oxygen species (ROS)-dependent way. J Zhejiang Univ Sci B 2023; 24:1027-1036. [PMID: 37961804 PMCID: PMC10646396 DOI: 10.1631/jzus.b2300051] [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: 01/17/2023] [Accepted: 04/20/2023] [Indexed: 08/02/2023]
Abstract
随着铜绿假单胞菌(铜绿)的耐药性逐年增强,铜绿感染已经成为公共医疗卫生的重点关注问题。线粒体自噬及其介导的线粒体功能障碍在多种细菌感染中已被报道,但线粒体功能障碍在宿主调控铜绿感染中的作用尚不明确。因此,本研究建立铜绿刺激小鼠巨噬细胞感染模型和小鼠急性铜绿感染模型,探讨铜绿是否通过诱导线粒体自噬改变线粒体功能,进而影响宿主免疫炎症反应和细胞毒性,并通过监测生存率和肺组织病理学变化进一步确定线粒体自噬在小鼠铜绿体内感染模型中的作用。结果表明,铜绿引起小鼠腹腔巨噬细胞线粒体功能障碍,并通过线粒体自噬途径清除铜绿刺激引起的活性氧(ROS)累积,从而抑制铜绿引起的促炎性细胞因子分泌并增强细胞毒性。体内实验进一步确认线粒体自噬在铜绿体内感染中的作用。
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Affiliation(s)
- Haitao Yang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Yan Wang
- Department of Medicine Laboratory, the Second People's Hospital of Lianyungang Affiliated to Kangda College of Nanjing Medical University, the Second People's Hospital of Lianyungang City, Lianyungang 222000, China
| | - Hui Fan
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Feixue Liu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Huimiao Feng
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Xueqing Li
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Mingyi Chu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Enzhuang Pan
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Daoyang Teng
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Huizhen Chen
- Institute of Neuroscience, the First People's Hospital of Lianyungang, Lianyungang 222000, China.
| | - Jingquan Dong
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China.
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Noori HG, Tadjrobehkar O, Moazamian E. Biofilm stimulating activity of solanidine and Solasodine in Pseudomonas aeruginosa. BMC Microbiol 2023; 23:208. [PMID: 37533040 PMCID: PMC10394856 DOI: 10.1186/s12866-023-02957-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 07/21/2023] [Indexed: 08/04/2023] Open
Abstract
BACKGROUND Biofilm formation has reported as an important virulence associated properties of Pseudomonas aeruginosa that is regulated by quorum-sensing associated genes. Biofilm and quorum-sensing interfering properties of steroidal alkaloids, Solanidine and Solasodine were investigated in the present study. RESULTS Biofilm formation capacity and relative expression level of five studied genes(lasI, lasR, rhlI, rhlR and algD) were significantly increased dose-dependently after treatment with sub-inhibitory concentrations (32 and 512 µg/ml) of the both Solanidine and Solasodine. Biofilm formation capacity was more stimulated in weak biofilm formers(9 iaolates) in comparison to the strong biofilm producers(11 isolates). The lasI gene was the most induced QS-associated gene among five investigated genes. CONCLUSION Biofilm inducing properties of the plants alkaloids and probably medicines derived from them has to be considered for revision of therapeutic guidelines. Investigating the biofilm stimulating properties of corticosteroids and other medicines that comes from plant alkaloids also strongly proposed.
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Affiliation(s)
- Hadi Ghoomdost Noori
- Department of Microbiology, College of Sciences, Agriculture and Modern Technology, Shiraz Branch, Islamic Azad University, Shiraz, Iran
| | - Omid Tadjrobehkar
- Department of Medical Microbiology (Bacteriology and Virology), Afzalipour Faculty of Medicine, Kerman University of Medical Sciences, Kerman, Iran.
| | - Elham Moazamian
- Department of Microbiology, College of Sciences, Agriculture and Modern Technology, Shiraz Branch, Islamic Azad University, Shiraz, Iran
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Zheng H, Zhong B, Wang Q, Li X, Chen J, Liu L, Liu T. ZnO-Doped Metal-Organic Frameworks Nanoparticles: Antibacterial Activity and Mechanisms. Int J Mol Sci 2023; 24:12238. [PMID: 37569611 PMCID: PMC10418459 DOI: 10.3390/ijms241512238] [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: 06/19/2023] [Revised: 07/26/2023] [Accepted: 07/28/2023] [Indexed: 08/13/2023] Open
Abstract
Metal-Organic Frameworks (MOFs) offer new ideas for the design of antibacterial materials because of their antibacterial properties, high porosity and specific surface area, low toxicity and good biocompatibility compared with other nanomaterials. Herein, a novel antimicrobial nanomaterial, MIL-101(Fe)@ZnO, has been synthesized by hydrothermal synthesis and characterized by FTIR, UV-vis, ICP-OES, XRD, SEM, EDS and BET to show that the zinc ions are doped into the crystal lattice of MIL-101(Fe) to form a Fe-Zn bimetallic structure. MIL-101(Fe)@ZnO was found to be effective against a wide range of antibacterial materials including Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumannii, Acinetobacter junii and Staphylococcus epidermidis. It has a significant antibacterial effect, weak cytotoxicity, high safety performance and good biocompatibility. Meanwhile, MIL-101(Fe)@ZnO was able to achieve antibacterial effects by causing cells to produce ROS, disrupting the cell membrane structure, and causing protein leakage and lipid preoxidation mechanisms. In conclusion, MIL-101(Fe)@ZnO is an easy-to-prepare antimicrobial nanomaterial with broad-spectrum bactericidal activity and low toxicity.
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Affiliation(s)
| | | | | | | | | | | | - Tiantian Liu
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou 510310, China; (H.Z.); (B.Z.); (Q.W.); (X.L.); (J.C.); (L.L.)
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Lungu CN, Mangalagiu I. Editorial for Special Issue-''Research Progress and Applications of Natural Products". Molecules 2023; 28:5449. [PMID: 37513320 PMCID: PMC10385373 DOI: 10.3390/molecules28145449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
This Special Issue (S [...].
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Affiliation(s)
- Claudiu N Lungu
- Department of Morphological and Functional Science, University of Medicine and Pharmacy, Dunarea de Jos, 800017 Galati, Romania
| | - Ionel Mangalagiu
- Department of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd., 700506 Iasi, Romania
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Verbeke J, De Bolle X, Arnould T. To eat or not to eat mitochondria? How do host cells cope with mitophagy upon bacterial infection? PLoS Pathog 2023; 19:e1011471. [PMID: 37410705 DOI: 10.1371/journal.ppat.1011471] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023] Open
Abstract
Mitochondria fulfil a plethora of cellular functions ranging from energy production to regulation of inflammation and cell death control. The fundamental role of mitochondria makes them a target of choice for invading pathogens, with either an intracellular or extracellular lifestyle. Indeed, the modulation of mitochondrial functions by several bacterial pathogens has been shown to be beneficial for bacterial survival inside their host. However, so far, relatively little is known about the importance of mitochondrial recycling and degradation pathways through mitophagy in the outcome (success or failure) of bacterial infection. On the one hand, mitophagy could be considered as a defensive response triggered by the host upon infection to maintain mitochondrial homeostasis. However, on the other hand, the pathogen itself may initiate the host mitophagy to escape from mitochondrial-mediated inflammation or antibacterial oxidative stress. In this review, we will discuss the diversity of various mechanisms of mitophagy in a general context, as well as what is currently known about the different bacterial pathogens that have developed strategies to manipulate the host mitophagy.
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Affiliation(s)
- Jérémy Verbeke
- Research Unit in Cell Biology, Laboratory of Biochemistry and Cell Biology URBC)-Namur Research Institute for Life Sciences (NARILIS), University of Namur, Namur, Belgium
| | - Xavier De Bolle
- Research Unit in Microorganisms Biology (URBM)-Namur Research Institute for Life Sciences (NARILIS), University of Namur, Namur, Belgium
| | - Thierry Arnould
- Research Unit in Cell Biology, Laboratory of Biochemistry and Cell Biology URBC)-Namur Research Institute for Life Sciences (NARILIS), University of Namur, Namur, Belgium
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Zaman N, Azam SS. Discrete Dynamics of Warhead Modulation on Covalent Inhibition of Oxyr: A QM/MM Study. J Phys Chem B 2023. [PMID: 37377002 DOI: 10.1021/acs.jpcb.2c07376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
The bacterial transcriptional factor OxyR, a peroxide sensor conserved in bacterial virulence pathways, has the capability to exhibit exceptional reactivity toward hydrogen peroxide (H2O2). H2O2 is essential for oxidizing cysteine thiolates to maintain cellular redox homeostasis and is dispensable for bacterial growth that can potentially mitigate drug resistance, thus underlining OxyR as a valuable target. We employ quantum mechanics/molecular mechanics (QM/MM) umbrella sampling (US) simulations at the DFTB3/MM level of theory and propose a reaction mechanism with four potential covalent inhibitors. The potential of mean force reveals the direct role of intrinsic reactivity of inhibitors, for instance, benzothiophenes and modified experimental inhibitors with methyl oxo-enoate warhead-activated carbonyl samples in the first step of reaction, which shed light on the significance of proton transfer indispensable for full inhibition, whereas the nitrile inhibitor undergoes a stepwise mechanism with a small proton-transfer energy barrier and lower imaginary frequencies that materialize instantly after nucleophilic attack. To unveil the molecular determinants of respective binding affinities, transition states along the reaction path are optimized and characterized with B3LYP 6-31+G(d,p). Furthermore, the post-simulation analysis indicates the catalytic triad (His130/Cys199/Thr129), thermodynamically favored for inhibition, which restricts water molecules from acting as the potential source of protonation/deprotonation. This study thus serves as a preamble to add variation in the proposed structures and unveils the impact of functional groups lying in warheads that modulate the kinetics of proton transfer, which will certainly aid to design more selective and efficient irreversible inhibitors of OxyR.
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Affiliation(s)
- Naila Zaman
- Computational Biology Lab, National Center for Bioinformatics, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Syed Sikander Azam
- Computational Biology Lab, National Center for Bioinformatics, Quaid-i-Azam University, Islamabad 45320, Pakistan
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Chin JD, Zhao L, Mayberry TG, Cowan BC, Wakefield MR, Fang Y. Photodynamic Therapy, Probiotics, Acetic Acid, and Essential Oil in the Treatment of Chronic Wounds Infected with Pseudomonas aeruginosa. Pharmaceutics 2023; 15:1721. [PMID: 37376169 PMCID: PMC10301549 DOI: 10.3390/pharmaceutics15061721] [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: 05/11/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
As a prevalent medical problem that burdens millions of patients across the world, chronic wounds pose a challenge to the healthcare system. These wounds, often existing as a comorbidity, are vulnerable to infections. Consequently, infections hinder the healing process and complicate clinical management and treatment. While antibiotic drugs remain a popular treatment for infected chronic wounds, the recent rise of antibiotic-resistant strains has hastened the need for alternative treatments. Future impacts of chronic wounds are likely to increase with aging populations and growing obesity rates. With the need for more effective novel treatments, promising research into various wound therapies has seen an increased demand. This review summarizes photodynamic therapy, probiotics, acetic acid, and essential oil studies as developing antibiotic-free treatments for chronic wounds infected with Pseudomonas aeruginosa. Clinicians may find this review informative by gaining a better understanding of the state of current research into various antibiotic-free treatments. Furthermore. this review provides clinical significance, as clinicians may seek to implement photodynamic therapy, probiotics, acetic acid, or essential oils into their own practice.
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Affiliation(s)
- Jaeson D. Chin
- Department of Microbiology, Immunology & Pathology, Des Moines University, Des Moines, IA 50312, USA
| | - Lei Zhao
- The Department of Respiratory Medicine, The Second People’s Hospital of Hefei and Hefei Hospital Affiliated to Anhui Medical University, Hefei 230002, China
| | - Trenton G. Mayberry
- Department of Surgery, University of Missouri School of Medicine, Columbia, MO 65212, USA
| | - Braydon C. Cowan
- Department of Surgery, University of Missouri School of Medicine, Columbia, MO 65212, USA
| | - Mark R. Wakefield
- Department of Surgery, University of Missouri School of Medicine, Columbia, MO 65212, USA
- Ellis Fischel Cancer Center, University of Missouri, Columbia, MO 65212, USA
| | - Yujiang Fang
- Department of Microbiology, Immunology & Pathology, Des Moines University, Des Moines, IA 50312, USA
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Chen L, Qu X, Su J, Yao H, Yuan Q, Wang Y, Li N, Wu G, Liu X, Hu J, Zhang J. The dilemma of antibiotic susceptibility and clinical decision-making in a multi-drug-resistant Pseudomonas aeruginosa bloodstream infection. Front Pharmacol 2023; 14:1183332. [PMID: 37324460 PMCID: PMC10266203 DOI: 10.3389/fphar.2023.1183332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 05/15/2023] [Indexed: 06/17/2023] Open
Abstract
Objective: How to choose the appropriate antibiotics and dosage has always been a difficult issue during the treatment of multi-drug-resistant bacterial infections. Our study aims to resolve this difficulty by introducing our multi-disciplinary treatment (MDT) clinical decision-making scheme based on rigorous interpretation of antibiotic susceptibility tests and precise therapeutic drug monitoring (TDM)-guided dosage adjustment. Method: The treatment course of an elderly patient who developed a multi-drug-resistant Pseudomonas aeruginosa (MDRPA) bloodstream infection from a brain abscess was presented. Results: In the treatment process, ceftazidime-avibactam (CAZ-AVI) was used empirically for treating the infection and clinical symptoms improved. However, the follow-up bacterial susceptibility test showed that the bacteria were resistant to CAZ-AVI. Considering the low fault tolerance of clinical therapy, the treatment was switched to a 1 mg/kg maintenance dose of susceptible polymyxin B, and TDM showed that the AUC24h, ss of 65.5 mgh/L had been achieved. However, clinical symptoms were not improved after 6 days of treatment. Facing the complicated situation, the cooperation of physicians, clinical pharmacologists, and microbiologists was applied, and the treatment finally succeeded with the pathogen eradicated when polymyxin B dose was increased to 1.4 mg/kg, with the AUC24h, ss of 98.6 mgh/L. Conclusion: MDT collaboration on the premise of scientific and standardized drug management is helpful for the recovery process in patients. The empirical judgment of doctors, the medication recommendations from experts in the field of TDM and pharmacokinetics/pharmacodynamics, and the drug susceptibility results provided by the clinical microbiology laboratory all provide the direction of treatment.
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Affiliation(s)
- Long Chen
- Department of Neurosurgery and Neurocritical Care, Huashan Hospital, Fudan University, Shanghai, China
| | - Xingyi Qu
- Fudan University and Key Laboratory of Clinical Pharmacology of Antibiotics and National Health Commission and National Clinical Research Center for Aging and Medicine, Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, China
- Phase I Unit, Huashan Hospital, Fudan University, Shanghai, China
| | - Jingqian Su
- Fujian Key Laboratory of Innate Immune Biology, Biomedical Research Center of South China, College of Life Science, Fujian Normal University, Fuzhou, China
| | - Haijun Yao
- Department of Neurosurgery and Neurocritical Care, Huashan Hospital, Fudan University, Shanghai, China
| | - Qiang Yuan
- Department of Neurosurgery and Neurocritical Care, Huashan Hospital, Fudan University, Shanghai, China
| | - Yu Wang
- Fudan University and Key Laboratory of Clinical Pharmacology of Antibiotics and National Health Commission and National Clinical Research Center for Aging and Medicine, Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, China
| | - Nanyang Li
- Phase I Unit, Huashan Hospital, Fudan University, Shanghai, China
| | - Gang Wu
- Department of Neurosurgery and Neurocritical Care, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiaofen Liu
- Fudan University and Key Laboratory of Clinical Pharmacology of Antibiotics and National Health Commission and National Clinical Research Center for Aging and Medicine, Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, China
| | - Jin Hu
- Department of Neurosurgery and Neurocritical Care, Huashan Hospital, Fudan University, Shanghai, China
| | - Jing Zhang
- Fudan University and Key Laboratory of Clinical Pharmacology of Antibiotics and National Health Commission and National Clinical Research Center for Aging and Medicine, Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, China
- Phase I Unit, Huashan Hospital, Fudan University, Shanghai, China
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Xue Z, Tian W, Han Y, Feng Z, Wang Y, Zhang W. The hidden diversity of microbes in ballast water and sediments revealed by metagenomic sequencing. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 882:163666. [PMID: 37094681 DOI: 10.1016/j.scitotenv.2023.163666] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 05/03/2023]
Abstract
With the rapid globalization of trade, the worldwide spread of pathogens through ballast water is becoming a major concern. Although the international maritime organization (IMO) convention has been adopted to prevent the spread of harmful pathogens, the limited species resolution of the current microbe-monitoring methods challenged the ballast water and sediments management (BWSM). In this study, we explored metagenomic sequencing to investigate the species composition of microbial communities in four international vessels for BWSM. Our results showed the largest species diversity (14,403) in ballast water and sediments, including bacteria (11,710), eukaryotes (1007), archaea (829), and viruses (790). A total of 129 phyla were detected, among which the Proteobacteria, followed by Bacteroidetes, and Actinobacteria were the most abundant. Notably, 422 pathogens that are potentially harmful to marine environments and aquaculture were identified. The co-occurrence network analysis showed that most of these pathogens were positively correlated with the commonly used indicator bacteria Vibrio cholerae, Escherichia coli, and intestinal Enterococci species, validating the D-2 standard in BWSM. The functional profile showed prominent pathways of methane and sulfur metabolism, indicating that the microbial community in the severe tank environment still utilizes the energy to sustain such a high level of microbe diversity. In conclusion, metagenomic sequencing provides novel information for BWSM.
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Affiliation(s)
- Zhaozhao Xue
- Marine College, Shandong University, Weihai, China
| | - Wen Tian
- Animal, Plant and Food Inspection Center of Nanjing Customs District, Nanjing, China
| | - Yangchun Han
- Integarted Technical Service Center of Jiangyin Customs, Jiangyin, China
| | - Zhen Feng
- Animal, Plant and Food Inspection Center of Nanjing Customs District, Nanjing, China
| | - Yu Wang
- Animal, Plant and Food Inspection Center of Nanjing Customs District, Nanjing, China
| | - Wei Zhang
- Marine College, Shandong University, Weihai, China.
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45
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Verdial C, Serrano I, Tavares L, Gil S, Oliveira M. Mechanisms of Antibiotic and Biocide Resistance That Contribute to Pseudomonas aeruginosa Persistence in the Hospital Environment. Biomedicines 2023; 11:biomedicines11041221. [PMID: 37189839 DOI: 10.3390/biomedicines11041221] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/13/2023] [Accepted: 04/18/2023] [Indexed: 05/17/2023] Open
Abstract
Pseudomonas aeruginosa is an opportunistic bacterial pathogen responsible for multiple hospital- and community-acquired infections, both in human and veterinary medicine. P. aeruginosa persistence in clinical settings is worrisome and is a result of its remarkable flexibility and adaptability. This species exhibits several characteristics that allow it to thrive under different environmental conditions, including the ability to colonize inert materials such as medical equipment and hospital surfaces. P. aeruginosa presents several intrinsic mechanisms of defense that allow it to survive external aggressions, but it is also able to develop strategies and evolve into multiple phenotypes to persevere, which include antimicrobial-tolerant strains, persister cells, and biofilms. Currently, these emergent pathogenic strains are a worldwide problem and a major concern. Biocides are frequently used as a complementary/combination strategy to control the dissemination of P. aeruginosa-resistant strains; however, tolerance to commonly used biocides has also already been reported, representing an impediment to the effective elimination of this important pathogen from clinical settings. This review focuses on the characteristics of P. aeruginosa responsible for its persistence in hospital environments, including those associated with its antibiotic and biocide resistance ability.
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Affiliation(s)
- Cláudia Verdial
- Gato Escondido-Veterinary Clinic, Av. Bombeiros Voluntários n°22B, 2950-209 Palmela, Portugal
| | - Isa Serrano
- CIISA-Center for Interdisciplinary Research in Animal Health, Faculty of Medicine, University of Lisbon, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisboa, Portugal
| | - Luís Tavares
- CIISA-Center for Interdisciplinary Research in Animal Health, Faculty of Medicine, University of Lisbon, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisboa, Portugal
| | - Solange Gil
- CIISA-Center for Interdisciplinary Research in Animal Health, Faculty of Medicine, University of Lisbon, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisboa, Portugal
| | - Manuela Oliveira
- CIISA-Center for Interdisciplinary Research in Animal Health, Faculty of Medicine, University of Lisbon, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisboa, Portugal
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Rahman A, Sarker MT, Islam MA, Hossain MU, Hasan M, Susmi TF. Targeting Essential Hypothetical Proteins of Pseudomonas aeruginosa PAO1 for Mining of Novel Therapeutics: An In Silico Approach. BIOMED RESEARCH INTERNATIONAL 2023; 2023:1787485. [PMID: 37090194 PMCID: PMC10119676 DOI: 10.1155/2023/1787485] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 01/24/2023] [Accepted: 02/06/2023] [Indexed: 04/25/2023]
Abstract
As an omnipresent opportunistic bacterium, Pseudomonas aeruginosa PAO1 is responsible for acute and chronic infection in immunocompromised individuals. Currently, this bacterium is on WHO's red list where new antibiotics are urgently required for the treatment. Finding essential genes and essential hypothetical proteins (EHP) can be crucial in identifying novel druggable targets and therapeutics. This study is aimed at characterizing these EHPs and analyzing subcellular and physiochemical properties, PPI network, nonhomologous analysis against humans, virulence factor and novel drug target prediction, and finally structural analysis of the identified target employing around 42 robust bioinformatics tools/databases, the output of which was evaluated using the ROC analysis. The study discovered 18 EHPs from 336 essential genes, with domain and functional annotation revealing that 50% of these proteins belong to the enzyme category. The majority are cytoplasmic and cytoplasmic membrane proteins, with half being stable proteins subjected to PPIs network analysis. The network contains 261 nodes and 269 edges for 9 proteins of interest, with 11 hubs containing at least three nodes each. Finally, a pipeline builder predicts 7 proteins with novel drug targets, 5 nonhomologous proteins against human proteome, human antitargets, and human gut flora, and 3 virulent proteins. Among these, homology modeling of NP_249450 and NP_251676 was done, and the Ramachandran plot analysis revealed that more than 94% of the residues were in the preferred region. By analyzing functional attributes and virulence characteristics, the findings of this study may facilitate the development of innovative antibacterial drug targets and drugs of Pseudomonas aeruginosa PAO1.
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Affiliation(s)
- Atikur Rahman
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Science and Technology, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Md. Takim Sarker
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Science and Technology, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Md Ashiqul Islam
- Department of Chemistry and Biochemistry, University of Windsor, Canada
| | - Mohammad Uzzal Hossain
- Bioinformatics Division, National Institute of Biotechnology, Ganakbari, Ashulia, Savar, Dhaka 1349, Bangladesh
| | - Mahmudul Hasan
- Department of Pharmaceuticals and Industrial Biotechnology, Sylhet Agricultural University, Sylhet 3100, Bangladesh
| | - Tasmina Ferdous Susmi
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Science and Technology, Jashore University of Science and Technology, Jashore 7408, Bangladesh
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Odoom JF, Aboagye CI, Acheampong P, Asiamah I, Darko G, Borquaye LS. Chemical Composition, Antioxidant, and Antimicrobial Activities of the Leaf and Fruit Essential Oils of the West African Plum, Vitex doniana. J CHEM-NY 2023. [DOI: 10.1155/2023/9959296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
Abstract
Vitex doniana (West African plum or black plum) is a plant with varying phytoconstituents and biological activities across different countries. In this study, essential oils extracted from the leaves and fruits of Vitex doniana cultivated in Ghana were investigated for their antimicrobial and antioxidant activities. The antioxidant actions of the essential oils were determined using hydrogen peroxide (H2O2), phosphomolybdenum, thiobarbituric acid reactive substances (TBARS), and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assays. For both essential oils, the total antioxidant capacities ranged from 44 to 68 µg/g AAE, the IC50 values for H2O2 scavenging activity were between 87 and 242 µg/mL, whereas that for DPPH assay were between 322 and 599 µg/mL. The IC50 for the TBARS assay for both essential oils also ranged from 247 to 414 µg/mL. The antimicrobial activities of the essential oils were investigated using the broth dilution assay. The minimum inhibition concentration for the essential oils ranged from 12.5 to 50 mg/mL. Biofilm inhibitory activity was also evaluated for both essential oils, and the fruit essential oil showed a half-maximal inhibition of biofilm formation (BIC50) at 44.40 ± 0.6 mg/mL, whereas the BIC50 value of the leaf essential oil was 109.1 ± 0.9 mg/mL. The fruit essential oil was superior to the leaf essential oil in inhibiting the secretion of pyoverdine. Molecular docking analyses suggested that methyl cinnamate, ethyl cinnamate, p-menth-4-en-3-one, trans-α-ionone, benzyl benzoate, isobutyl cinnamate, and folic acid likely interacted with LasR and algC proteins, and hence, contributed to the inhibition of biofilm formation and pyoverdine secretion. Essential oils from Vitex doniana could, therefore, be exploited as a natural source of radical scavenging and antimicrobial agents and could be useful in the pharmaceutical, food, and cosmetic industries.
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Akinduti PA, George OW, Ohore HU, Ariyo OE, Popoola ST, Adeleye AI, Akinwande KS, Popoola JO, Rotimi SO, Olufemi FO, Omonhinmin CA, Olasehinde GI. Evaluation of Efflux-Mediated Resistance and Biofilm formation in Virulent Pseudomonas aeruginosa Associated with Healthcare Infections. Antibiotics (Basel) 2023; 12:antibiotics12030626. [PMID: 36978493 PMCID: PMC10044907 DOI: 10.3390/antibiotics12030626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/19/2022] [Accepted: 07/29/2022] [Indexed: 03/30/2023] Open
Abstract
Pseudomonas aeruginosa is a significant pathogen identified with healthcare-associated infections. The present study evaluates the role of biofilm and efflux pump activities in influencing high-level resistance in virulent P. aeruginosa strains in clinical infection. Phenotypic resistance in biotyped Pseudomonas aeruginosa (n = 147) from diagnosed disease conditions was classified based on multiple antibiotic resistance (MAR) indices and analysed with logistic regression for risk factors. Efflux pump activity, biofilm formation, and virulence factors were analysed for optimal association in Pseudomonas infection using receiver operation characteristics (ROC). Age-specificity (OR [CI] = 0.986 [0.946-1.027]), gender (OR [CI] = 1.44 [0.211-9.827]) and infection sources (OR [CI] = 0.860 [0.438-1.688]) were risk variables for multidrug resistance (MDR)-P. aeruginosa infection (p < 0.05). Biofilm formers caused 48.2% and 18.5% otorrhea and wound infections (95% CI = 0.820-1.032; p = 0.001) respectively and more than 30% multidrug resistance (MDR) strains demonstrated high-level efflux pump activity (95% CI = 0.762-1.016; p = 0.001), protease (95% CI = 0.112-0.480; p = 0.003), lipase (95% CI = 0.143-0.523; p = 0.001), and hemolysin (95% CI = 1.109-1.780; p = 0.001). Resistance relatedness of more than 80% and 60% to cell wall biosynthesis inhibitors (ceftazidime, ceffproxil, augumentin, ampicillin) and, DNA translational and transcriptional inhibitors (gentamicin, ciprofloxacin, ofloxacin, nitrofurantoin) were observed (p < 0.05). Strong efflux correlation (r = 0.85, p = 0.034) with MDR strains, with high predictive performances in efflux pump activity (ROC-AUC 0.78), biofilm formation (ROC-AUC 0.520), and virulence hierarchical-clustering. Combine activities of the expressed efflux pump and biofilm formation in MDR-P. aeruginosa pose risk to clinical management and infection control.
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Affiliation(s)
- Paul A Akinduti
- Microbiology Unit, Department of Biological Sciences, Covenant University, PMB 1023, Ota 112104, Ogun State, Nigeria
| | - Onome W George
- Microbiology Unit, Department of Biological Sciences, Covenant University, PMB 1023, Ota 112104, Ogun State, Nigeria
| | - Hannah U Ohore
- Microbiology Unit, Department of Biological Sciences, Covenant University, PMB 1023, Ota 112104, Ogun State, Nigeria
| | | | - Samuel T Popoola
- Microbiology Unit, Department of Biological Sciences, Covenant University, PMB 1023, Ota 112104, Ogun State, Nigeria
| | - Adenike I Adeleye
- Veterinary Teaching Hospital, Federal University of Agriculture, Abeokuta 110124, Ogun State, Nigeria
| | - Kazeem S Akinwande
- Department of Chemical Pathology and Immunology, Federal Medical Centre, Abeokuta 110124, Ogun State, Nigeria
| | - Jacob O Popoola
- Applied Biology and Biotechnology Unit, Department of Biological Sciences, Covenant University, PMB 1023, Ota 112104, Ogun State, Nigeria
| | - Solomon O Rotimi
- Department of Biochemistry and Molecular Biology, Covenant University, PMB 1023, Ota 112104, Ogun State, Nigeria
| | - Fredrick O Olufemi
- Department of Veterinary Microbiology and Virology, College of Veterinary Medicine, Federal University of Agriculture, Abeokuta 110124, Ogun State, Nigeria
| | - Conrad A Omonhinmin
- Applied Biology and Biotechnology Unit, Department of Biological Sciences, Covenant University, PMB 1023, Ota 112104, Ogun State, Nigeria
| | - Grace I Olasehinde
- Microbiology Unit, Department of Biological Sciences, Covenant University, PMB 1023, Ota 112104, Ogun State, Nigeria
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49
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Righetto GM, Lopes JLDS, Bispo PJM, André C, Souza JM, Andricopulo AD, Beltramini LM, Camargo ILBDC. Antimicrobial Activity of an Fmoc-Plantaricin 149 Derivative Peptide against Multidrug-Resistant Bacteria. Antibiotics (Basel) 2023; 12:antibiotics12020391. [PMID: 36830301 PMCID: PMC9952790 DOI: 10.3390/antibiotics12020391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 02/17/2023] Open
Abstract
Antimicrobial resistance poses a major threat to public health. Given the paucity of novel antimicrobials to treat resistant infections, the emergence of multidrug-resistant bacteria renewed interest in antimicrobial peptides as potential therapeutics. This study designed a new analog of the antimicrobial peptide Plantaricin 149 (Pln149-PEP20) based on previous Fmoc-peptides. The minimal inhibitory concentrations of Pln149-PEP20 were determined for 60 bacteria of different species and resistance profiles, ranging from 1 mg/L to 128 mg/L for Gram-positive bacteria and 16 to 512 mg/L for Gram-negative. Furthermore, Pln149-PEP20 demonstrated excellent bactericidal activity within one hour. To determine the propensity to develop resistance to Pln149-PEP20, a directed-evolution in vitro experiment was performed. Whole-genome sequencing of selected mutants with increased MICs and wild-type isolates revealed that most mutations were concentrated in genes associated with membrane metabolism, indicating the most likely target of Pln149-PEP20. Synchrotron radiation circular dichroism showed how this molecule disturbs the membranes, suggesting a carpet mode of interaction. Membrane depolarization and transmission electron microscopy assays supported these two hypotheses, although a secondary intracellular mechanism of action is possible. The molecule studied in this research has the potential to be used as a novel antimicrobial therapy, although further modifications and optimization remain possible.
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Affiliation(s)
- Gabriela Marinho Righetto
- Laboratory of Molecular Epidemiology and Microbiology, Department of Physics and Interdisciplinary Science, São Carlos Institute of Physics, University of São Paulo, São Carlos 13563-120, Brazil
| | - José Luiz de Souza Lopes
- Laboratory of Applied Biophysics, Department of Applied Physics, Institute of Physics, University of São Paulo, São Paulo 05315-970, Brazil
| | - Paulo José Martins Bispo
- Department of Ophthalmology, Infectious Disease Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA 02115, USA
| | - Camille André
- Department of Ophthalmology, Infectious Disease Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA 02115, USA
| | - Julia Medeiros Souza
- Laboratory of Medicinal and Computational Chemistry, Department of Physics and Interdisciplinary Science, São Carlos Institute of Physics, University of São Paulo, São Carlos 13563-120, Brazil
| | - Adriano Defini Andricopulo
- Laboratory of Medicinal and Computational Chemistry, Department of Physics and Interdisciplinary Science, São Carlos Institute of Physics, University of São Paulo, São Carlos 13563-120, Brazil
| | - Leila Maria Beltramini
- Group of Biophysics and Structural Biology “Sérgio Mascarenhas”, Department of Physics and Interdisciplinary Science, São Carlos Institute of Physics, University of São Paulo, São Carlos 13563-120, Brazil
| | - Ilana Lopes Baratella da Cunha Camargo
- Laboratory of Molecular Epidemiology and Microbiology, Department of Physics and Interdisciplinary Science, São Carlos Institute of Physics, University of São Paulo, São Carlos 13563-120, Brazil
- Correspondence: ; Tel.: +55-(16)-3373-8654
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50
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Pottier M, Gravey F, Castagnet S, Auzou M, Langlois B, Guérin F, Giard JC, Léon A, Le Hello S. A 10-year microbiological study of Pseudomonas aeruginosa strains revealed the circulation of populations resistant to both carbapenems and quaternary ammonium compounds. Sci Rep 2023; 13:2639. [PMID: 36788252 PMCID: PMC9929048 DOI: 10.1038/s41598-023-29590-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 02/07/2023] [Indexed: 02/16/2023] Open
Abstract
Pseudomonas aeruginosa is one of the leading causes of healthcare-associated infections. For this study, the susceptibility profiles to antipseudomonal antibiotics and a quaternary ammonium compound, didecyldimethylammonium chloride (DDAC), widely used as a disinfectant, were established for 180 selected human and environmental hospital strains isolated between 2011 and 2020. Furthermore, a genomic study determined resistome and clonal putative relatedness for 77 of them. During the ten-year study period, it was estimated that 9.5% of patients' strains were resistant to carbapenems, 11.9% were multidrug-resistant (MDR), and 0.7% were extensively drug-resistant (XDR). Decreased susceptibility (DS) to DDAC was observed for 28.0% of strains, a phenotype significantly associated with MDR/XDR profiles and from hospital environmental samples (p < 0.0001). According to genomic analyses, the P. aeruginosa population unsusceptible to carbapenems and/or to DDAC was diverse but mainly belonged to top ten high-risk clones described worldwide by del Barrio-Tofiño et al. The carbapenem resistance appeared mainly due to the production of the VIM-2 carbapenemase (39.3%) and DS to DDAC mediated by MexAB-OprM pump efflux overexpression. This study highlights the diversity of MDR/XDR populations of P. aeruginosa which are unsusceptible to compounds that are widely used in medicine and hospital disinfection and are probably distributed in hospitals worldwide.
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Affiliation(s)
- Marine Pottier
- Research Department, LABÉO, 14053, Caen, France.,UNICAEN, Univ Rouen Normandie, INSERM DYNAMICURE UMR 1311, CHU Caen, department of microbiology, Normandie Univ, 14000, Caen, France
| | - François Gravey
- UNICAEN, Univ Rouen Normandie, INSERM DYNAMICURE UMR 1311, CHU Caen, department of microbiology, Normandie Univ, 14000, Caen, France.,Service de Microbiologie, CHU de Caen, Avenue de la Côte de Nacre, 14033, Caen Cedex, France
| | - Sophie Castagnet
- Research Department, LABÉO, 14053, Caen, France.,UNICAEN, Univ Rouen Normandie, INSERM DYNAMICURE UMR 1311, CHU Caen, department of microbiology, Normandie Univ, 14000, Caen, France
| | - Michel Auzou
- Service de Microbiologie, CHU de Caen, Avenue de la Côte de Nacre, 14033, Caen Cedex, France
| | - Bénédicte Langlois
- Service de Microbiologie, CHU de Caen, Avenue de la Côte de Nacre, 14033, Caen Cedex, France
| | - François Guérin
- Laboratoire de Bactériologie et Hygiène Hospitalière, CHU de Rennes, 2 Rue Henri Le Guilloux, 35033, Rennes Cedex 9, France
| | - Jean-Christophe Giard
- UNICAEN, Univ Rouen Normandie, INSERM DYNAMICURE UMR 1311, CHU Caen, department of microbiology, Normandie Univ, 14000, Caen, France
| | - Albertine Léon
- Research Department, LABÉO, 14053, Caen, France.,UNICAEN, Univ Rouen Normandie, INSERM DYNAMICURE UMR 1311, CHU Caen, department of microbiology, Normandie Univ, 14000, Caen, France
| | - Simon Le Hello
- UNICAEN, Univ Rouen Normandie, INSERM DYNAMICURE UMR 1311, CHU Caen, department of microbiology, Normandie Univ, 14000, Caen, France. .,Service de Microbiologie, CHU de Caen, Avenue de la Côte de Nacre, 14033, Caen Cedex, France. .,Service d'Hygiène Hospitalière, CHU de Caen, Avenue de la Côte de Nacre, 14033, Caen Cedex, France.
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