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Acharya K, Shaw S, Bhattacharya SP, Biswas S, Bhandary S, Bhattacharya A. Pigments from pathogenic bacteria: a comprehensive update on recent advances. World J Microbiol Biotechnol 2024; 40:270. [PMID: 39030429 DOI: 10.1007/s11274-024-04076-x] [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: 04/13/2024] [Accepted: 07/08/2024] [Indexed: 07/21/2024]
Abstract
Bacterial pigments stand out as exceptional natural bioactive compounds with versatile functionalities. The pigments represent molecules from distinct chemical categories including terpenes, terpenoids, carotenoids, pyridine, pyrrole, indole, and phenazines, which are synthesized by diverse groups of bacteria. Their spectrum of physiological activities encompasses bioactive potentials that often confer fitness advantages to facilitate the survival of bacteria amid challenging environmental conditions. A large proportion of such pigments are produced by bacterial pathogens mostly as secondary metabolites. Their multifaceted properties augment potential applications in biomedical, food, pharmaceutical, textile, paint industries, bioremediation, and in biosensor development. Apart from possessing a less detrimental impact on health with environmentally beneficial attributes, tractable and scalable production strategies render bacterial pigments a sustainable option for novel biotechnological exploration for untapped discoveries. The review offers a comprehensive account of physiological role of pigments from bacterial pathogens, production strategies, and potential applications in various biomedical and biotechnological fields. Alongside, the prospect of combining bacterial pigment research with cutting-edge approaches like nanotechnology has been discussed to highlight future endeavours.
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Affiliation(s)
- Kusumita Acharya
- AMR-Research Laboratory, Department of Biological Sciences, Adamas University, Barasat-Barrackpore Rd, Kolkata, 700126, India
| | - Swarna Shaw
- AMR-Research Laboratory, Department of Biological Sciences, Adamas University, Barasat-Barrackpore Rd, Kolkata, 700126, India
| | | | - Shatarupa Biswas
- AMR-Research Laboratory, Department of Biological Sciences, Adamas University, Barasat-Barrackpore Rd, Kolkata, 700126, India
| | - Suman Bhandary
- AMR-Research Laboratory, Department of Biological Sciences, Adamas University, Barasat-Barrackpore Rd, Kolkata, 700126, India.
| | - Arijit Bhattacharya
- AMR-Research Laboratory, Department of Biological Sciences, Adamas University, Barasat-Barrackpore Rd, Kolkata, 700126, India.
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2
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Abri S, Durr H, Barton HA, Adkins-Travis K, Shriver LP, Pukale DD, Fulton JA, Leipzig ND. Chitosan-based multifunctional oxygenating antibiotic hydrogel dressings for managing chronic infection in diabetic wounds. Biomater Sci 2024; 12:3458-3470. [PMID: 38836321 PMCID: PMC11197983 DOI: 10.1039/d4bm00355a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Accepted: 05/25/2024] [Indexed: 06/06/2024]
Abstract
Current treatment strategies for infection of chronic wounds often result in compromised healing and necrosis due to antibiotic toxicity, and underlying biomarkers affected by treatments are not fully known. Here, a multifunctional dressing was developed leveraging the unique wound-healing properties of chitosan, a natural polysaccharide known for its numerous benefits in wound care. The dressing consists of an oxygenating perfluorocarbon functionalized methacrylic chitosan (MACF) hydrogel incorporated with antibacterial polyhexamethylene biguanide (PHMB). A non-healing diabetic infected wound model with emerging metabolomics tools was used to explore the anti-infective and wound healing properties of the resultant multifunctional dressing. Direct bacterial bioburden assessment demonstrated superior antibacterial properties of hydrogels over a commercial dressing. However, wound tissue quality analyses confirmed that sustained PHMB for 21 days resulted in tissue necrosis and disturbed healing. Therefore, a follow-up comparative study investigated the best treatment course for antiseptic application ranging from 7 to 21 days, followed by the oxygenating chitosan-based MACF treatment for the remainder of the 21 days. Bacterial counts, tissue assessments, and lipidomics studies showed that 14 days of application of MACF-PHMB dressings followed by 7 days of MACF dressings provides a promising treatment for managing infected non-healing diabetic skin ulcers.
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Affiliation(s)
- Shahrzad Abri
- Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, Ohio 44325, USA.
| | - Hannah Durr
- Integrated Biosciences Program, Department of Biology, The University of Akron, Akron, Ohio 44325, USA
| | - Hazel A Barton
- Department of Geological Sciences, The University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Kayla Adkins-Travis
- Department of Chemistry, Washington University in Saint Louis, Saint Louis, MO 63130, USA
| | - Leah P Shriver
- Department of Chemistry, Washington University in Saint Louis, Saint Louis, MO 63130, USA
- Center for Proteomics, Metabolomics, and Isotope Tracing, Washington University in Saint Louis, Saint Louis, MO 63130, USA
- Department of Medicine, Washington University in Saint Louis, Saint Louis, MO 63130, USA
| | - Dipak D Pukale
- Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, Ohio 44325, USA.
| | - Judith A Fulton
- Summa Health System-Translational Research Center Akron, Akron, Ohio 44304, USA
- Northeast Ohio Medical University-REDIzone, Rootstown, Ohio 44272, USA
| | - Nic D Leipzig
- Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, Ohio 44325, USA.
- Integrated Biosciences Program, Department of Biology, The University of Akron, Akron, Ohio 44325, USA
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3
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Esposito A, Rossi A, Stabile M, Pinto G, De Fino I, Melessike M, Tamanini A, Cabrini G, Lippi G, Aureli M, Loberto N, Renda M, Galietta LJV, Amoresano A, Dechecchi MC, De Gregorio E, Bragonzi A, Guaragna A. Assessing the Potential of N-Butyl-l-deoxynojirimycin (l-NBDNJ) in Models of Cystic Fibrosis as a Promising Antibacterial Agent. ACS Pharmacol Transl Sci 2024; 7:1807-1822. [PMID: 38898954 PMCID: PMC11184606 DOI: 10.1021/acsptsci.4c00044] [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: 01/26/2024] [Revised: 04/29/2024] [Accepted: 04/30/2024] [Indexed: 06/21/2024]
Abstract
Over the past few years, l-iminosugars have revealed attractive pharmacological properties for managing rare diseases including Cystic Fibrosis (CF). The iminosugar N-butyl-l-deoxynojirimycin (l-NBDNJ, ent-1), prepared by a carbohydrate-based route, was herein evaluated for its anti-inflammatory and anti-infective potential in models of CF lung disease infection. A significant decrease in the bacterial load in the airways was observed in the murine model of Pseudomonas aeruginosa chronic infection in the presence of l-NBDNJ, also accompanied by a modest reduction of inflammatory cells. Mechanistic insights into the observed activity revealed that l-NBDNJ interferes with the expression of proteins regulating cytoskeleton assembly and organization of the host cell, downregulates the main virulence factors of P. aeruginosa involved in the host response, and affects pathogen adhesion to human cells. These findings along with the observation of the absence of an in vitro bacteriostatic/bactericidal action of l-NBDNJ suggest the potential use of this glycomimetic as an antivirulence agent in the management of CF lung disease.
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Affiliation(s)
- Anna Esposito
- Department
of Chemical, Materials and Production Engineering, University of Naples Federico II, Naples I-80125, Italy
| | - Alice Rossi
- Infections
and Cystic Fibrosis Unit, Division of Immunology, Transplantation
and Infectious Diseases, IRCCS San Raffaele
Scientific Institute, Milan I-20132, Italy
| | - Maria Stabile
- Department
of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Naples I-80131, Italy
| | - Gabriella Pinto
- Department
of Chemical Sciences, University of Naples
Federico II, Naples I-80126, Italy
| | - Ida De Fino
- Infections
and Cystic Fibrosis Unit, Division of Immunology, Transplantation
and Infectious Diseases, IRCCS San Raffaele
Scientific Institute, Milan I-20132, Italy
| | - Medede Melessike
- Infections
and Cystic Fibrosis Unit, Division of Immunology, Transplantation
and Infectious Diseases, IRCCS San Raffaele
Scientific Institute, Milan I-20132, Italy
| | - Anna Tamanini
- Section
of Clinical Biochemistry, Department of Engineering for Innovation
Medicine, University of Verona, Verona I-37134, Italy
| | - Giulio Cabrini
- Center on
Innovative Therapies for Cystic Fibrosis, Department of Life Sciences
and Biotechnology, University of Ferrara, Ferrara I-40121, Italy
| | - Giuseppe Lippi
- Section
of Clinical Biochemistry, Department of Engineering for Innovation
Medicine, University of Verona, Verona I-37134, Italy
| | - Massimo Aureli
- Department
of Medical Biotechnology and Translational Medicine, University of Milan, Milan I-20054, Italy
| | - Nicoletta Loberto
- Department
of Medical Biotechnology and Translational Medicine, University of Milan, Milan I-20054, Italy
| | - Mario Renda
- Telethon
Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples I-80078, Italy
| | - Luis J. V. Galietta
- Telethon
Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples I-80078, Italy
- Department
of Translational Medical Sciences (DISMET), University of Naples Federico II, Naples I-80131, Italy
| | - Angela Amoresano
- Department
of Chemical Sciences, University of Naples
Federico II, Naples I-80126, Italy
- Istituto
Nazionale Biostrutture e Biosistemi, Consorzio Interuniversitario, Rome I-00136, Italy
| | - Maria Cristina Dechecchi
- Section
of Clinical Biochemistry, Department of Engineering for Innovation
Medicine, University of Verona, Verona I-37134, Italy
| | - Eliana De Gregorio
- Department
of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Naples I-80131, Italy
| | - Alessandra Bragonzi
- Infections
and Cystic Fibrosis Unit, Division of Immunology, Transplantation
and Infectious Diseases, IRCCS San Raffaele
Scientific Institute, Milan I-20132, Italy
| | - Annalisa Guaragna
- Department
of Chemical Sciences, University of Naples
Federico II, Naples I-80126, Italy
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Zhang P, Ma Y, Wang Y, Dong E, Ma S. Design, Synthesis, and Biological Evaluation of 2-Phenoxyalkylhydrazide Benzoxazole Derivatives as Quorum Sensing Inhibitors with Strong Antibiofilm Effect. J Med Chem 2024; 67:5721-5743. [PMID: 38564271 DOI: 10.1021/acs.jmedchem.3c02379] [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: 04/04/2024]
Abstract
With the increasing problem of bacterial resistance to traditional antibiotics, there is an urgent need for new antibacterial agents with novel mechanisms to treat infections caused by drug-resistant bacteria. In this paper, we designed and synthesized 2-phenoxyalkylhydrazide benzoxazole derivatives and evaluated their quorum sensing inhibition activity. Among them, 26c at a concentration of 102.4 μg/mL not only inhibited the production of pyocyanin and rhamnolipid by 45.6% and 38.3%, respectively, but also suppressed 76.6% of biofilm production at 32 μg/mL. In addition, 26c did not affect bacterial growth, but in a mouse model infected with P. aeruginosa PAO1, it could help ciprofloxacin effectively eliminate the living bacteria. In the targeting experiment, 26c could inhibit the fluorescence intensity of PAO1-lasB-gfp and PAO1-pqsA-gfp in a concentration-dependent manner, indicating that the compound acts on the quorum sensing system. Overall, 26c is worthy of further investigation as a quorum sensing inhibitor with strong antibiofilm effect.
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Affiliation(s)
- Panpan Zhang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Yangchun Ma
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Yingmei Wang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Enhui Dong
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Shutao Ma
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
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Mudaliar SB, Bharath Prasad AS. A biomedical perspective of pyocyanin from Pseudomonas aeruginosa: its applications and challenges. World J Microbiol Biotechnol 2024; 40:90. [PMID: 38341389 PMCID: PMC10858844 DOI: 10.1007/s11274-024-03889-0] [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: 11/08/2023] [Accepted: 01/08/2024] [Indexed: 02/12/2024]
Abstract
Pyocyanin is a bioactive pigment produced by Pseudomonas aeruginosa. It is an important virulence factor that plays a critical role in P. aeruginosa infections as a redox-active secondary metabolite and a quorum sensing (QS) signaling molecule. Pyocyanin production from chorismic acid requires the involvement of two homologous operons, phz1 and phz2, which are activated by QS regulatory proteins. Pyocyanin inhibits the proliferation of bacterial, fungal, and mammalian cells by inducing oxidative stress due to which it acts as a potent antibacterial, antifungal, and anticancer agent. Its potential role as a neuroprotectant needs further exploration. However, pyocyanin exacerbates the damaging effects of nosocomial infections caused by P. aeruginosa in immunocompromised individuals. Further, cystic fibrosis (CF) patients are highly susceptible to persistent P. aeruginosa infections in the respiratory system. The bacterial cells form colonies and three interconnected QS networks-pqs, las, and rhl-get activated, thus stimulating the cells to produce pyocyanin which exacerbates pulmonary complications. As an opportunistic pathogen, P. aeruginosa produces pyocyanin to impede the recovery of injuries like burn wounds through its anti-proliferative activity. Moreover, pyocyanin plays a vital role in compounding P. aeruginosa infections by promoting biofilm formation. This review begins with a brief description of the characteristics of pyocyanin, its activity, and the different aspects of its production including its biosynthesis, the role of QS, and the effect of environmental factors. It then goes on to explore the potential applications of pyocyanin as a biotherapeutic molecule while also highlighting the biomedical challenges and limitations that it presents.
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Affiliation(s)
- Samriti Balaji Mudaliar
- Department of Public Health & Genomics, Manipal School of Life Sciences (MSLS), Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India
| | - Alevoor Srinivas Bharath Prasad
- Department of Public Health & Genomics, Manipal School of Life Sciences (MSLS), Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India.
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Kristensen R, Andersen JB, Rybtke M, Jansen CU, Fritz BG, Kiilerich RO, Uhd J, Bjarnsholt T, Qvortrup K, Tolker-Nielsen T, Givskov M, Jakobsen TH. Inhibition of Pseudomonas aeruginosa quorum sensing by chemical induction of the MexEF-oprN efflux pump. Antimicrob Agents Chemother 2024; 68:e0138723. [PMID: 38189278 PMCID: PMC10848761 DOI: 10.1128/aac.01387-23] [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: 10/26/2023] [Accepted: 11/17/2023] [Indexed: 01/09/2024] Open
Abstract
The cell-to-cell communication system quorum sensing (QS), used by various pathogenic bacteria to synchronize gene expression and increase host invasion potentials, is studied as a potential target for persistent infection control. To search for novel molecules targeting the QS system in the Gram-negative opportunistic pathogen Pseudomonas aeruginosa, a chemical library consisting of 3,280 small compounds from LifeArc was screened. A series of 10 conjugated phenones that have not previously been reported to target bacteria were identified as inhibitors of QS in P. aeruginosa. Two lead compounds (ethylthio enynone and propylthio enynone) were re-synthesized for verification of activity and further elucidation of the mode of action. The isomeric pure Z-ethylthio enynone was used for RNA sequencing, revealing a strong inhibitor of QS-regulated genes, and the QS-regulated virulence factors rhamnolipid and pyocyanin were significantly decreased by treatment with the compounds. A transposon mutagenesis screen performed in a newly constructed lasB-gfp monitor strain identified the target of Z-ethylthio enynone in P. aeruginosa to be the MexEF-OprN efflux pump, which was further established using defined mex knockout mutants. Our data indicate that the QS inhibitory capabilities of Z-ethylthio enynone were caused by the drainage of intracellular signal molecules as a response to chemical-induced stimulation of the MexEF-oprN efflux pump, thereby inhibiting the autogenerated positive feedback and its enhanced signal-molecule synthesis.
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Affiliation(s)
- Rasmus Kristensen
- Department of Immunology and Microbiology, Costerton Biofilm Center, University of Copenhagen, Copenhagen, Denmark
| | - Jens Bo Andersen
- Department of Immunology and Microbiology, Costerton Biofilm Center, University of Copenhagen, Copenhagen, Denmark
| | - Morten Rybtke
- Department of Immunology and Microbiology, Costerton Biofilm Center, University of Copenhagen, Copenhagen, Denmark
| | | | - Blaine Gabriel Fritz
- Department of Immunology and Microbiology, Costerton Biofilm Center, University of Copenhagen, Copenhagen, Denmark
| | - Rikke Overgaard Kiilerich
- Department of Immunology and Microbiology, Costerton Biofilm Center, University of Copenhagen, Copenhagen, Denmark
| | - Jesper Uhd
- Department of Chemistry, Technical University of Denmark, Lyngby, Denmark
| | - Thomas Bjarnsholt
- Department of Immunology and Microbiology, Costerton Biofilm Center, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen, Denmark
| | - Katrine Qvortrup
- Department of Chemistry, Technical University of Denmark, Lyngby, Denmark
| | - Tim Tolker-Nielsen
- Department of Immunology and Microbiology, Costerton Biofilm Center, University of Copenhagen, Copenhagen, Denmark
| | - Michael Givskov
- Department of Immunology and Microbiology, Costerton Biofilm Center, University of Copenhagen, Copenhagen, Denmark
| | - Tim Holm Jakobsen
- Department of Immunology and Microbiology, Costerton Biofilm Center, University of Copenhagen, Copenhagen, Denmark
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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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8
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Vergoz D, Le H, Bernay B, Schaumann A, Barreau M, Nilly F, Desriac F, Tahrioui A, Giard JC, Lesouhaitier O, Chevalier S, Brunel JM, Muller C, Dé E. Antibiofilm and Antivirulence Properties of 6-Polyaminosteroid Derivatives against Antibiotic-Resistant Bacteria. Antibiotics (Basel) 2023; 13:8. [PMID: 38275318 PMCID: PMC10812528 DOI: 10.3390/antibiotics13010008] [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: 11/29/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
The emergence of multi-drug resistant pathogens is a major public health problem, leading us to rethink and innovate our bacterial control strategies. Here, we explore the antibiofilm and antivirulence activities of nineteen 6-polyaminosterol derivatives (squalamine-based), presenting a modulation of their polyamine side chain on four major pathogens, i.e., carbapenem-resistant A. baumannii (CRAB) and P. aeruginosa (CRPA), methicillin-resistant S. aureus (MRSA), and vancomycin-resistant E. faecium (VRE) strains. We screened the effect of these derivatives on biofilm formation and eradication. Derivatives 4e (for CRAB, VRE, and MRSA) and 4f (for all the strains) were the most potent ones and displayed activities as good as those of conventional antibiotics. We also identified 11 compounds able to decrease by more than 40% the production of pyocyanin, a major virulence factor of P. aeruginosa. We demonstrated that 4f treatment acts against bacterial infections in Galleria mellonella and significantly prolonged larvae survival (from 50% to 80%) after 24 h of CRAB, VRE, and MRSA infections. As shown by proteomic studies, 4f triggered distinct cellular responses depending on the bacterial species but essentially linked to cell envelope. Its interesting antibiofilm and antivirulence properties make it a promising a candidate for use in therapeutics.
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Affiliation(s)
- Delphine Vergoz
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, PBS UMR 6270, F-76000 Rouen, France; (D.V.); (H.L.); (A.S.)
| | - Hung Le
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, PBS UMR 6270, F-76000 Rouen, France; (D.V.); (H.L.); (A.S.)
| | - Benoit Bernay
- Univ Caen Normandie, Proteogen Platform, US EMERODE, F-14000 Caen, France;
| | - Annick Schaumann
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, PBS UMR 6270, F-76000 Rouen, France; (D.V.); (H.L.); (A.S.)
| | - Magalie Barreau
- Univ Rouen Normandie, Univ Caen Normandie, Normandie Univ, Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, F-76000 Rouen, France; (M.B.); (F.N.); (F.D.); (A.T.); (O.L.); (S.C.)
| | - Flore Nilly
- Univ Rouen Normandie, Univ Caen Normandie, Normandie Univ, Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, F-76000 Rouen, France; (M.B.); (F.N.); (F.D.); (A.T.); (O.L.); (S.C.)
| | - Florie Desriac
- Univ Rouen Normandie, Univ Caen Normandie, Normandie Univ, Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, F-76000 Rouen, France; (M.B.); (F.N.); (F.D.); (A.T.); (O.L.); (S.C.)
| | - Ali Tahrioui
- Univ Rouen Normandie, Univ Caen Normandie, Normandie Univ, Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, F-76000 Rouen, France; (M.B.); (F.N.); (F.D.); (A.T.); (O.L.); (S.C.)
| | | | - Olivier Lesouhaitier
- Univ Rouen Normandie, Univ Caen Normandie, Normandie Univ, Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, F-76000 Rouen, France; (M.B.); (F.N.); (F.D.); (A.T.); (O.L.); (S.C.)
| | - Sylvie Chevalier
- Univ Rouen Normandie, Univ Caen Normandie, Normandie Univ, Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, F-76000 Rouen, France; (M.B.); (F.N.); (F.D.); (A.T.); (O.L.); (S.C.)
| | | | - Cécile Muller
- Univ Rouen Normandie, Univ Caen Normandie, Normandie Univ, Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, F-76000 Rouen, France; (M.B.); (F.N.); (F.D.); (A.T.); (O.L.); (S.C.)
| | - Emmanuelle Dé
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, PBS UMR 6270, F-76000 Rouen, France; (D.V.); (H.L.); (A.S.)
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9
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Bischer AP, Baran TM, Wojtovich AP. Reactive oxygen species drive foraging decisions in Caenorhabditis elegans. Redox Biol 2023; 67:102934. [PMID: 37864874 PMCID: PMC10616421 DOI: 10.1016/j.redox.2023.102934] [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] [Revised: 09/14/2023] [Accepted: 10/12/2023] [Indexed: 10/23/2023] Open
Abstract
Environmental surveillance-mediated behavior integrates multiple cues through complex signaling mechanisms. In Caenorhabditis elegans, neurons coordinate perception and response through evolutionarily conserved molecular signaling cascades to mediate attraction and avoidance behaviors. However, despite lacking eyes, C. elegans was recently reported to perceive and react to the color blue. Here, we provide an explanation for this apparent color perception. We show that internally-generated reactive oxygen species (ROS) occurring in response to light are additive to exogenous sources of ROS, such as bacterial toxins or photosensitizers. Multiple sub-threshold sources of ROS are integrated to coordinate behavioral responses to the environment with internal physiologic cues, independent of color. We further demonstrate that avoidance behavior can be blocked by antioxidants, while ROS is both sufficient and scalable to phenocopy the avoidance response. Moreover, avoidance behavior in response to ROS is plastic and reversible, suggesting it may occur through a post-translation redox modification. Blue light affects C. elegans behavior through ROS generation by endogenous flavins in a process requiring the neuronal gustatory photoreceptor like protein, LITE-1. Our results demonstrate that LITE-1 is also required for ROS-mediated avoidance of pyocyanin and light-activated photosensitizers and this role is mediated through the modification of Cys44. Overall, these findings demonstrate that ROS and LITE-1 are central mediators of C. elegans foraging behavior through integration of multiple inputs, including light.
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Affiliation(s)
- Andrew P Bischer
- Department of Anesthesiology and Perioperative Medicine, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Timothy M Baran
- Department of Imaging Sciences, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Andrew P Wojtovich
- Department of Anesthesiology and Perioperative Medicine, University of Rochester Medical Center, Rochester, NY, 14642, USA.
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10
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Zheng X, Gao M, Wu L, Lu X, Lin Q, Zhong H, Lu Y, Zhang Y, Zhang X. Ceftazidime-assisted synthesis of ultrasmall chitosan nanoparticles for biofilm penetration and eradication of Pseudomonas aeruginosa. Sci Rep 2023; 13:13481. [PMID: 37596397 PMCID: PMC10439121 DOI: 10.1038/s41598-023-40653-0] [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: 05/30/2023] [Accepted: 08/16/2023] [Indexed: 08/20/2023] Open
Abstract
Pseudomonas aeruginosa (P. aeruginosa) infections present a grave threat to immunocompromised individuals, particularly those with cystic fibrosis due to the development of bacterial biofilms. In this study, we engineered self-assembling chitosan-ceftazidime nanoparticles (CSCE) capable of effectively penetrating biofilms and eradicating P. aeruginosa. The CSCE nanoparticles were synthesized through ionic cross-linking, combining negatively charged ceftazidime with positively charged chitosan, resulting in uniform nanoparticles measuring approximately 40 nm in diameter, exhibiting high dispersity and excellent biocompatibility. Remarkably, these nanoparticles exhibited significant inhibition of P. aeruginosa growth, reduced pyocyanin production, and diminished biofilm formation, achieving a maximum inhibition rate of 22.44%. Furthermore, in vivo investigations demonstrated enhanced survival in mice with abdominal P. aeruginosa infection following treatment with CSCE nanoparticles, accompanied by reduced levels of inflammatory cytokines Interleukin-6 (125.79 ± 18.63 pg/mL), Interleukin-17 (125.67 ± 5.94 pg/mL), and Tumor Necrosis Factor-α (135.4 ± 11.77 pg/mL). Critically, mice treated with CSCE nanoparticles showed no presence of bacteria in the bloodstream following intraperitoneal P. aeruginosa infection. Collectively, our findings highlight the potential of these synthesized nanoparticles as effective agents against P. aeruginosa infections.
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Affiliation(s)
- Xiaoran Zheng
- Department of Respiratory and Critical Care Medicine, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, 211100, China
| | - Min Gao
- Department of Respiratory and Critical Care Medicine, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, 211100, China
| | - Liangquan Wu
- Department of Respiratory and Critical Care Medicine, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, 211100, China
| | - Xin Lu
- Department of Respiratory and Critical Care Medicine, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, 211100, China
| | - Qiuqi Lin
- Department of Respiratory and Critical Care Medicine, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, 211100, China
| | - Hai Zhong
- Department of Respiratory and Critical Care Medicine, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, 211100, China
| | - Yingfei Lu
- Central Laboratory, Translational Medicine Research Center, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, 211100, China
| | - Yunlei Zhang
- Department of Respiratory and Critical Care Medicine, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, 211100, China.
- School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, 211100, China.
- Central Laboratory, Translational Medicine Research Center, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, 211100, China.
| | - Xiuwei Zhang
- Department of Respiratory and Critical Care Medicine, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, 211100, China.
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11
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Gerner E, Giraldo-Osorno PM, Johansson Loo A, Firdaus R, Ben Amara H, Werthén M, Palmquist A, Thomsen P, Omar O, Almqvist S, Trobos M. Targeting Pseudomonas aeruginosa quorum sensing with sodium salicylate modulates immune responses in vitro and in vivo. Front Cell Infect Microbiol 2023; 13:1183959. [PMID: 37614559 PMCID: PMC10442818 DOI: 10.3389/fcimb.2023.1183959] [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: 03/10/2023] [Accepted: 07/18/2023] [Indexed: 08/25/2023] Open
Abstract
Introduction Chronic infections are a major clinical challenge in hard-to-heal wounds and implanted devices. Pseudomonas aeruginosa is a common causative pathogen that produces numerous virulence factors. Due to the increasing problem of antibiotic resistance, new alternative treatment strategies are needed. Quorum sensing (QS) is a bacterial communication system that regulates virulence and dampens inflammation, promoting bacterial survival. QS inhibition is a potent strategy to reduce bacterial virulence and alleviate the negative impact on host immune response. Aim This study investigates how secreted factors from P. aeruginosa PAO1, cultured in the presence or absence of the QS inhibitor sodium salicylate (NaSa), influence host immune response. Material and methods In vitro, THP-1 macrophages and neutrophil-like HL-60 cells were used. In vivo, discs of titanium were implanted in a subcutaneous rat model with local administration of P. aeruginosa culture supernatants. The host immune response to virulence factors contained in culture supernatants (+/-NaSa) was characterized through cell viability, migration, phagocytosis, gene expression, cytokine secretion, and histology. Results In vitro, P. aeruginosa supernatants from NaSa-containing cultures significantly increased THP-1 phagocytosis and HL-60 cell migration compared with untreated supernatants (-NaSa). Stimulation with NaSa-treated supernatants in vivo resulted in: (i) significantly increased immune cell infiltration and cell attachment to titanium discs; (ii) increased gene expression of IL-8, IL-10, ARG1, and iNOS, and (iii) increased GRO-α protein secretion and decreased IL-1β, IL-6, and IL-1α secretion, as compared with untreated supernatants. Conclusion In conclusion, treating P. aeruginosa with NaSa reduces the production of virulence factors and modulates major immune events, such as promoting phagocytosis and cell migration, and decreasing the secretion of several pro-inflammatory cytokines.
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Affiliation(s)
- Erik Gerner
- Department of Biomaterials, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Centre for Antibiotic Resistance Research in Gothenburg (CARe), Gothenburg, Sweden
- Mölnlycke Health Care AB, Gothenburg, Sweden
| | - Paula Milena Giraldo-Osorno
- Department of Biomaterials, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Centre for Antibiotic Resistance Research in Gothenburg (CARe), Gothenburg, Sweden
| | - Anna Johansson Loo
- Department of Biomaterials, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Rininta Firdaus
- Department of Biomaterials, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Centre for Antibiotic Resistance Research in Gothenburg (CARe), Gothenburg, Sweden
| | - Heithem Ben Amara
- Department of Biomaterials, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Maria Werthén
- Department of Biomaterials, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Centre for Antibiotic Resistance Research in Gothenburg (CARe), Gothenburg, Sweden
| | - Anders Palmquist
- Department of Biomaterials, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Peter Thomsen
- Department of Biomaterials, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Omar Omar
- Department of Biomedical Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | | | - Margarita Trobos
- Department of Biomaterials, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Centre for Antibiotic Resistance Research in Gothenburg (CARe), Gothenburg, Sweden
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12
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Abdelaziz AA, Kamer AMA, Al-Monofy KB, Al-Madboly LA. Pseudomonas aeruginosa's greenish-blue pigment pyocyanin: its production and biological activities. Microb Cell Fact 2023; 22:110. [PMID: 37291560 DOI: 10.1186/s12934-023-02122-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 05/25/2023] [Indexed: 06/10/2023] Open
Abstract
A subject of great interest is the bioprospecting of microorganisms and their bioactive byproducts, such as pigments. Microbial pigments have various benefits, including being safe to use due to their natural makeup, having therapeutic effects, and being produced all year round, regardless of the weather or location. Pseudomonas aeruginosa produces phenazine pigments that are crucial for interactions between Pseudomonas species and other living things. Pyocyanin pigment, which is synthesized by 90-95% of P. aeruginosa, has potent antibacterial, antioxidant, and anticancer properties. Herein, we will concentrate on the production and extraction of pyocyanin pigment and its biological use in different areas of biotechnology, engineering, and biology.
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Affiliation(s)
- Ahmed A Abdelaziz
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Amal M Abo Kamer
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Khaled B Al-Monofy
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Tanta University, Tanta, Egypt.
| | - Lamiaa A Al-Madboly
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
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13
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Edward EA, El Shehawy MR, Abouelfetouh A, Aboulmagd E. Prevalence of different virulence factors and their association with antimicrobial resistance among Pseudomonas aeruginosa clinical isolates from Egypt. BMC Microbiol 2023; 23:161. [PMID: 37270502 DOI: 10.1186/s12866-023-02897-8] [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: 11/16/2022] [Accepted: 05/17/2023] [Indexed: 06/05/2023] Open
Abstract
BACKGROUND Emergence of multi-drug resistant Pseudomonas aeruginosa, coupled with the pathogen's versatile virulence factors, lead to high morbidity and mortality rates. The current study investigated the potential association between the antibiotic resistance and the production of virulence factors among P. aeruginosa clinical isolates collected from Alexandria Main University Hospital in Egypt. We also evaluated the potential of the phenotypic detection of virulence factors to reflect virulence as detected by virulence genes presence. The role of alginate in the formation of biofilms and the effect of ambroxol, a mucolytic agent, on the inhibition of biofilm formation were investigated. RESULTS A multi-drug resistant phenotype was detected among 79.8% of the isolates. The most predominant virulence factor was biofilm formation (89.4%), while DNase was least detected (10.6%). Pigment production was significantly associated with ceftazidime susceptibility, phospholipase C production was significantly linked to sensitivity to cefepime, and DNase production was significantly associated with intermediate resistance to meropenem. Among the tested virulence genes, lasB and algD showed the highest prevalence rates (93.3% and 91.3%, respectively), while toxA and plcN were the least detected ones (46.2% and 53.8%, respectively). Significant association of toxA with ceftazidime susceptibility, exoS with ceftazidime and aztreonam susceptibility, and plcH with piperacillin-tazobactam susceptibility was observed. There was a significant correlation between alkaline protease production and the detection of algD, lasB, exoS, plcH and plcN; pigment production and the presence of algD, lasB, toxA and exoS; and gelatinase production and the existence of lasB, exoS and plcH. Ambroxol showed a high anti-biofilm activity (5% to 92%). Quantitative reverse transcriptase polymerase chain reaction showed that alginate was not an essential matrix component in P. aeruginosa biofilms. CONCLUSIONS High virulence coupled with the isolates' multi-drug resistance to commonly used antimicrobials would increase morbidity and mortality rates among P. aeruginosa infections. Ambroxol that displayed anti-biofilm action could be suggested as an alternative treatment option, yet in vivo studies are required to confirm these findings. We recommend active surveillance of antimicrobial resistance and virulence determinant prevalence for better understanding of coregulatory mechanisms.
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Affiliation(s)
- Eva A Edward
- Department of Microbiology and Immunology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt.
| | - Marwa R El Shehawy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Alaa Abouelfetouh
- Department of Microbiology and Immunology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
- Department of Microbiology and Immunology, Faculty of Pharmacy, Alamein International University, Alamein, Egypt
| | - Elsayed Aboulmagd
- Department of Microbiology and Immunology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
- College of Pharmacy, Arab Academy for Science, Technology and Maritime, Alamein Branch, Alamein, Egypt
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14
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Kamer AMA, Abdelaziz AA, Al-Monofy KB, Al-Madboly LA. Antibacterial, antibiofilm, and anti-quorum sensing activities of pyocyanin against methicillin-resistant Staphylococcus aureus: in vitro and in vivo study. BMC Microbiol 2023; 23:116. [PMID: 37095436 PMCID: PMC10124065 DOI: 10.1186/s12866-023-02861-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 04/13/2023] [Indexed: 04/26/2023] Open
Abstract
BACKGROUND Methicillin-resistant Staphylococcus aureus (MRSA) infections are considered a major public health problem, as the treatment options are restricted. Biofilm formation and the quorum sensing (QS) system play a pivotal role in S. aureus pathogenicity. Hence, this study was performed to explore the antibacterial effect of pyocyanin (PCN) on MRSA as well as its effect on MRSA biofilm and QS. RESULTS Data revealed that PCN exhibited strong antibacterial activity against all test MRSA isolates (n = 30) with a MIC value equal to 8 µg/ml. About 88% of MRSA biofilms were eradicated by PCN treatment using the crystal violet assay. The disruption of MRSA biofilm was confirmed using confocal laser scanning microscopy, which showed a reduction in bacterial viability (approximately equal to 82%) and biofilm thickness (approximately equal to 60%). Additionally, the disruption of the formation of microcolonies and the disturbance of the connection between bacterial cells in the MRSA biofilm after PCN treatment were examined by scanning electron microscopy. The 1/2 and 1/4 MICs of PCN exerted promising anti-QS activity without affecting bacterial viability; Agr QS-dependent virulence factors (hemolysin, protease, and motility), and the expression of agrA gene, decreased after PCN treatment. The in silico analysis confirmed the binding of PCN to the AgrA protein active site, which blocked its action. The in vivo study using the rat wound infection model confirmed the ability of PCN to modulate the biofilm and QS of MRSA isolates. CONCLUSION The extracted PCN seems to be a good candidate for treating MRSA infection through biofilm eradication and Agr QS inhibition.
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Affiliation(s)
- Amal M Abo Kamer
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Ahmed A Abdelaziz
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Khaled B Al-Monofy
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Tanta University, Tanta, Egypt.
| | - Lamiaa A Al-Madboly
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
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15
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Marzhoseyni Z, Mousavi MJ, Saffari M, Ghotloo S. Immune escape strategies of Pseudomonas aeruginosa to establish chronic infection. Cytokine 2023; 163:156135. [PMID: 36724716 DOI: 10.1016/j.cyto.2023.156135] [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: 08/08/2022] [Revised: 01/08/2023] [Accepted: 01/12/2023] [Indexed: 02/02/2023]
Abstract
The infection caused by P. aeruginosa still is dangerous throughout the world. This is partly due to its immune escape mechanisms considerably increasing the bacterial survival in the host. By escape from recognition by TLRs, interference with complement system activation, phagocytosis inhibition, production of ROS, inhibition of NET production, interference with the generation of cytokines, inflammasome inhibition, reduced antigen presentation, interference with cellular and humoral immunity, and induction of apoptotic cell death and MDSc, P. aeruginosa breaks down the barriers of the immune system and causes lethal infections in the host. Recognition of other immune escape mechanisms of P. aeruginosa may provide a basis for the future treatment of the infection. This manuscript may provide new insights and information for the development of new strategies to combat P. aeruginosa infection. In the present manuscript, the escape mechanisms of P. aeruginosa against immune response would be reviewed.
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Affiliation(s)
- Zeynab Marzhoseyni
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Mohammad Javad Mousavi
- Department of Hematology, Faculty of Allied Medicine, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Mahmood Saffari
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Somayeh Ghotloo
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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16
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Zhang Y, Gholizadeh H, Young P, Traini D, Li M, Ong HX, Cheng S. Real-time in-situ electrochemical monitoring of Pseudomonas aeruginosa biofilms grown on air-liquid interface and its antibiotic susceptibility using a novel dual-chamber microfluidic device. Biotechnol Bioeng 2023; 120:702-714. [PMID: 36408870 DOI: 10.1002/bit.28288] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 11/08/2022] [Accepted: 11/12/2022] [Indexed: 11/22/2022]
Abstract
Biofilms are communities of bacterial cells encased in a self-produced polymeric matrix that exhibit high tolerance toward environmental stress. Despite the plethora of research on biofilms, most P. aeruginosa biofilm models are cultured on a solid-liquid interface, and the longitudinal growth characteristics of P. aeruginosa biofilm are unclear. This study demonstrates the real-time and noninvasive monitoring of biofilm growth using a novel dual-chamber microfluidic device integrated with electrochemical detection capabilities to monitor pyocyanin (PYO). The growth of P. aeruginosa biofilms on the air-liquid interface (ALI) was monitored over 48 h, and its antibiotic susceptibility to 6 h exposure of 50, 400, and 1600 µg/ml of ciprofloxacin solutions was analyzed. The biofilm was treated directly on its surface and indirectly from the substratum by delivering the CIP solution to the top or bottom chamber of the microfluidic device. Results showed that P. aeruginosa biofilm developed on ALI produces PYO continuously, with the PYO production rate varying longitudinally and peak production observed between 24 and 30 h. In addition, this current study shows that the amount of PYO produced by the ALI biofilm is proportional to its viable cell numbers, which has not been previously demonstrated. Biofilm treated with ciprofloxacin solution above 400 µg/ml showed significant PYO reduction, with biofilms being killed more effectively when treatment was applied to their surfaces. The electrochemical measurement results have been verified with colony-forming unit count results, and the strong correlation between the PYO electrical signal and the viable cell number highlights the usefulness of this approach for fast and low-cost ALI biofilm study and antimicrobial tests.
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Affiliation(s)
- Ye Zhang
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, New South Wales, Australia.,Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
| | - Hanieh Gholizadeh
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia.,Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Paul Young
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia.,Department of Marketing, Macquarie Business School, Macquarie University, Sydney, New South Wales, Australia
| | - Daniela Traini
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia.,Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Ming Li
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, New South Wales, Australia
| | - Hui Xin Ong
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia.,Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Shaokoon Cheng
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, New South Wales, Australia
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17
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The two faces of pyocyanin - why and how to steer its production? World J Microbiol Biotechnol 2023; 39:103. [PMID: 36864230 PMCID: PMC9981528 DOI: 10.1007/s11274-023-03548-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 02/13/2023] [Indexed: 03/04/2023]
Abstract
The ambiguous nature of pyocyanin was noted quite early after its discovery. This substance is a recognized Pseudomonas aeruginosa virulence factor that causes problems in cystic fibrosis, wound healing, and microbiologically induced corrosion. However, it can also be a potent chemical with potential use in a wide variety of technologies and applications, e.g. green energy production in microbial fuel cells, biocontrol in agriculture, therapy in medicine, or environmental protection. In this mini-review, we shortly describe the properties of pyocyanin, its role in the physiology of Pseudomonas and show the ever-growing interest in it. We also summarize the possible ways of modulating pyocyanin production. We underline different approaches of the researchers that aim either at lowering or increasing pyocyanin production by using different culturing methods, chemical additives, physical factors (e.g. electromagnetic field), or genetic engineering techniques. The review aims to present the ambiguous character of pyocyanin, underline its potential, and signalize the possible further research directions.
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18
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Yang X, Zhu J, Hu C, Yang W, Zheng Z. Integration of Transcriptomics and Microbiomics Reveals the Responses of Bellamya aeruginosa to Toxic Cyanobacteria. Toxins (Basel) 2023; 15:toxins15020119. [PMID: 36828433 PMCID: PMC9958990 DOI: 10.3390/toxins15020119] [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: 12/28/2022] [Revised: 01/26/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023] Open
Abstract
Frequent outbreaks of harmful cyanobacterial blooms and the cyanotoxins they produce not only seriously jeopardize the health of freshwater ecosystems but also directly affect the survival of aquatic organisms. In this study, the dynamic characteristics and response patterns of transcriptomes and gut microbiomes in gastropod Bellamya aeruginosa were investigated to explore the underlying response mechanisms to toxic cyanobacterial exposure. The results showed that toxic cyanobacteria exposure induced overall hepatopancreatic transcriptome changes. A total of 2128 differentially expressed genes were identified at different exposure stages, which were mainly related to antioxidation, immunity, and metabolism of energy substances. In the early phase (the first 7 days of exposure), the immune system may notably be the primary means of resistance to toxin stress, and it performs apoptosis to kill damaged cells. In the later phase (the last 7 days of exposure), oxidative stress and the degradation activities of exogenous substances play a dominant role, and nutrient substance metabolism provides energy to the body throughout the process. Microbiomic analysis showed that toxic cyanobacteria increased the diversity of gut microbiota, enhanced interactions between gut microbiota, and altered microbiota function. In addition, the changes in gut microbiota were correlated with the expression levels of antioxidant-, immune-, metabolic-related differentially expressed genes. These results provide a comprehensive understanding of gastropods and intestinal microbiota response to toxic cyanobacterial stress.
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19
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Chen W, Zhang P, Guo T, Gu X, Bai B, zhang S, Chang X, Wang Y, Ma S. Design, synthesis and evaluation of oxazolopyridinone derivatives as quorum sensing inhibitors. Bioorg Chem 2022; 130:106266. [DOI: 10.1016/j.bioorg.2022.106266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/30/2022] [Accepted: 11/06/2022] [Indexed: 11/13/2022]
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Abstract
Pf4 is a filamentous bacteriophage integrated as a prophage into the genome of Pseudomonas aeruginosa PAO1. Pf4 virions can be produced without killing P. aeruginosa. However, cell lysis can occur during superinfection when Pf virions successfully infect a host lysogenized by a Pf superinfective variant. We have previously shown that infection of P. aeruginosa PAO1 with a superinfective Pf4 variant abolished twitching motility and altered biofilm architecture. More precisely, most of the cells embedded into the biofilm were showing a filamentous morphology, suggesting the activation of the cell envelope stress response involving both AlgU and SigX extracytoplasmic function sigma factors. Here, we show that Pf4 variant infection results in a drastic dysregulation of 3,360 genes representing about 58% of P. aeruginosa genome; of these, 70% of the virulence factors encoding genes show a dysregulation. Accordingly, Pf4 variant infection (termed Pf4*) causes in vivo reduction of P. aeruginosa virulence and decreased production of N-acyl-homoserine lactones and 2-alkyl-4-quinolones quorum-sensing molecules and related virulence factors, such as pyocyanin, elastase, and pyoverdine. In addition, the expression of genes involved in metabolism, including energy generation and iron homeostasis, was affected, suggesting further relationships between virulence and central metabolism. Altogether, these data show that Pf4 phage variant infection results in complex network dysregulation, leading to reducing acute virulence in P. aeruginosa. This study contributes to the comprehension of the bacterial response to filamentous phage infection. IMPORTANCE Filamentous bacteriophages can become superinfective and infect P. aeruginosa, even though they are inserted in the genome as lysogens. Despite this productive infection, growth of the host is only mildly affected, allowing the study of the interaction between the phage and the host, which is not possible in the case of lytic phages killing rapidly their host. Here, we demonstrate by transcriptome and phenotypic analysis that the infection by a superinfective filamentous phage variant causes a massive disruption in gene expression, including those coding for virulence factors and metabolic pathways.
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21
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Interference in the production of bacterial virulence factors by olive oil processing waste. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Holban AM, Gregoire CM, Gestal MC. Conquering the host: Bordetella spp. and Pseudomonas aeruginosa molecular regulators in lung infection. Front Microbiol 2022; 13:983149. [PMID: 36225372 PMCID: PMC9549215 DOI: 10.3389/fmicb.2022.983149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/17/2022] [Indexed: 11/27/2022] Open
Abstract
When bacteria sense cues from the host environment, stress responses are activated. Two component systems, sigma factors, small RNAs, ppGpp stringent response, and chaperones start coordinate the expression of virulence factors or immunomodulators to allow bacteria to respond. Although, some of these are well studied, such as the two-component systems, the contribution of other regulators, such as sigma factors or ppGpp, is increasingly gaining attention. Pseudomonas aeruginosa is the gold standard pathogen for studying the molecular mechanisms to sense and respond to environmental cues. Bordetella spp., on the other hand, is a microbial model for studying host-pathogen interactions at the molecular level. These two pathogens have the ability to colonize the lungs of patients with chronic diseases, suggesting that they have the potential to share a niche and interact. However, the molecular networks that facilitate adaptation of Bordetella spp. to cues are unclear. Here, we offer a side-by-side comparison of what is known about these diverse molecular mechanisms that bacteria utilize to counteract host immune responses, while highlighting the relatively unexplored interactions between them.
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Affiliation(s)
- Alina M. Holban
- Research Institute of the University of Bucharest (ICUB), Bucharest, Romania
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Courtney M. Gregoire
- Department of Microbiology and Immunology, Louisiana State University Health Science Center, Shreveport, LA, United States
| | - Monica C. Gestal
- Department of Microbiology and Immunology, Louisiana State University Health Science Center, Shreveport, LA, United States
- *Correspondence: Monica C. Gestal, ;
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Louis M, Tahrioui A, Verdon J, David A, Rodrigues S, Barreau M, Manac’h M, Thiroux A, Luton B, Dupont C, Calvé ML, Bazire A, Crépin A, Clabaut M, Portier E, Taupin L, Defontaine F, Clamens T, Bouffartigues E, Cornelis P, Feuilloley M, Caillon J, Dufour A, Berjeaud JM, Lesouhaitier O, Chevalier S. Effect of Phthalates and Their Substitutes on the Physiology of Pseudomonas aeruginosa. Microorganisms 2022; 10:microorganisms10091788. [PMID: 36144390 PMCID: PMC9502294 DOI: 10.3390/microorganisms10091788] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/26/2022] [Accepted: 09/01/2022] [Indexed: 11/16/2022] Open
Abstract
Phthalates are used in a variety of applications—for example, as plasticizers in polyvinylchloride products to improve their flexibility—and can be easily released into the environment. In addition to being major persistent organic environmental pollutants, some phthalates are responsible for the carcinogenicity, teratogenicity, and endocrine disruption that are notably affecting steroidogenesis in mammals. Numerous studies have thus focused on deciphering their effects on mammals and eukaryotic cells. While multicellular organisms such as humans are known to display various microbiota, including all of the microorganisms that may be commensal, symbiotic, or pathogenic, few studies have aimed at investigating the relationships between phthalates and bacteria, notably regarding their effects on opportunistic pathogens and the severity of the associated pathologies. Herein, the effects of phthalates and their substitutes were investigated on the human pathogen, Pseudomonas aeruginosa, in terms of physiology, virulence, susceptibility to antibiotics, and ability to form biofilms. We show in particular that most of these compounds increased biofilm formation, while some of them enhanced the bacterial membrane fluidity and altered the bacterial morphology.
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Affiliation(s)
- Mélissande Louis
- Unité de Recherche Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- SéSAD, Fédération de Recherche “Sécurité Sanitaire, Bien Être, Aliment Durable”, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
| | - Ali Tahrioui
- Unité de Recherche Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- SéSAD, Fédération de Recherche “Sécurité Sanitaire, Bien Être, Aliment Durable”, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
| | - Julien Verdon
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- CNRS UMR7267 Ecologie et Biologie des Interactions (EBI), Université de Poitiers, F-86000 Poitiers, France
| | - Audrey David
- Unité de Recherche Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- SéSAD, Fédération de Recherche “Sécurité Sanitaire, Bien Être, Aliment Durable”, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
| | - Sophie Rodrigues
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- Université de Bretagne-Sud, EA 3884, LBCM, IUEM, F-56100 Lorient, France
| | - Magalie Barreau
- Unité de Recherche Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- SéSAD, Fédération de Recherche “Sécurité Sanitaire, Bien Être, Aliment Durable”, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
| | - Maëliss Manac’h
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- Université de Bretagne-Sud, EA 3884, LBCM, IUEM, F-56100 Lorient, France
| | - Audrey Thiroux
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- CNRS UMR7267 Ecologie et Biologie des Interactions (EBI), Université de Poitiers, F-86000 Poitiers, France
| | - Baptiste Luton
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- Université de Bretagne-Sud, EA 3884, LBCM, IUEM, F-56100 Lorient, France
| | - Charly Dupont
- Unité de Recherche Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- SéSAD, Fédération de Recherche “Sécurité Sanitaire, Bien Être, Aliment Durable”, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
| | - Marie Le Calvé
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- Université de Bretagne-Sud, EA 3884, LBCM, IUEM, F-56100 Lorient, France
| | - Alexis Bazire
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- Université de Bretagne-Sud, EA 3884, LBCM, IUEM, F-56100 Lorient, France
| | - Alexandre Crépin
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- CNRS UMR7267 Ecologie et Biologie des Interactions (EBI), Université de Poitiers, F-86000 Poitiers, France
| | - Maximilien Clabaut
- Unité de Recherche Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- SéSAD, Fédération de Recherche “Sécurité Sanitaire, Bien Être, Aliment Durable”, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- CNRS UMR7267 Ecologie et Biologie des Interactions (EBI), Université de Poitiers, F-86000 Poitiers, France
| | - Emilie Portier
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- Université de Bretagne-Sud, EA 3884, LBCM, IUEM, F-56100 Lorient, France
| | - Laure Taupin
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- Université de Bretagne-Sud, EA 3884, LBCM, IUEM, F-56100 Lorient, France
| | - Florian Defontaine
- Unité de Recherche Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- SéSAD, Fédération de Recherche “Sécurité Sanitaire, Bien Être, Aliment Durable”, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
| | - Thomas Clamens
- Unité de Recherche Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- SéSAD, Fédération de Recherche “Sécurité Sanitaire, Bien Être, Aliment Durable”, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
| | - Emeline Bouffartigues
- Unité de Recherche Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- SéSAD, Fédération de Recherche “Sécurité Sanitaire, Bien Être, Aliment Durable”, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
| | - Pierre Cornelis
- Unité de Recherche Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- SéSAD, Fédération de Recherche “Sécurité Sanitaire, Bien Être, Aliment Durable”, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
| | - Marc Feuilloley
- Unité de Recherche Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- SéSAD, Fédération de Recherche “Sécurité Sanitaire, Bien Être, Aliment Durable”, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
| | - Jocelyne Caillon
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- EA3826 Thérapeutiques Cliniques et Expérimentales des Infections, Faculté de Médecine, Université de Nantes, F-44000 Nantes, France
| | - Alain Dufour
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- Université de Bretagne-Sud, EA 3884, LBCM, IUEM, F-56100 Lorient, France
| | - Jean-Marc Berjeaud
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- CNRS UMR7267 Ecologie et Biologie des Interactions (EBI), Université de Poitiers, F-86000 Poitiers, France
| | - Olivier Lesouhaitier
- Unité de Recherche Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- SéSAD, Fédération de Recherche “Sécurité Sanitaire, Bien Être, Aliment Durable”, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
| | - Sylvie Chevalier
- Unité de Recherche Communication Bactérienne et Stratégies Anti-Infectieuses, CBSA UR4312, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- SéSAD, Fédération de Recherche “Sécurité Sanitaire, Bien Être, Aliment Durable”, Université de Rouen-Normandie, Normandie Université, F-27000 Évreux, France
- IMPERIAL Project Consortium, ANSES, F-94706 Maisons-Alfort, France
- Correspondence: ; Tel.: +33-2-32-29-15-60
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Glasgow AMA, Greene CM. Epithelial damage in the cystic fibrosis lung: the role of host and microbial factors. Expert Rev Respir Med 2022; 16:737-748. [PMID: 35833354 DOI: 10.1080/17476348.2022.2100350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The airway epithelium is a key system within the lung. It acts as a physical barrier to inhaled factors, and can actively remove unwanted microbes and particles from the lung via the mucociliary escalator. On a physiological level, it senses the presence of pathogens and initiates innate immune responses to combat their effects. Hydration of the airways is also controlled by the epithelium. Within the cystic fibrosis (CF) lung, these properties are suboptimal and contribute to the pulmonary manifestations of CF. AREAS COVERED In this review, we discuss how various host and microbial factors can contribute to airway epithelium dysfunction in the CF lung focusing on mechanisms relating to the mucociliary escalator and protease expression and function. We also explore how alterations in microRNA expression can impact the behavior of the airway epithelium. EXPERT OPINION Notwithstanding the unprecedented benefits that CFTR modulator drugs now provide to the health of CF sufferers, it will be important to delve more deeply into additional mechanisms underpinning CF lung disease such as those illustrated here in an attempt to counteract these aberrant processes and further enhance quality of life for people with CF.
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Affiliation(s)
- Arlene M A Glasgow
- Lung Biology Group, Department of Clinical Microbiology, Royal College of Surgeons in Ireland (RCSI), Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Catherine M Greene
- Lung Biology Group, Department of Clinical Microbiology, Royal College of Surgeons in Ireland (RCSI), Education and Research Centre, Beaumont Hospital, Dublin, Ireland
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Resistance Is Not Futile: The Role of Quorum Sensing Plasticity in Pseudomonas aeruginosa Infections and Its Link to Intrinsic Mechanisms of Antibiotic Resistance. Microorganisms 2022; 10:microorganisms10061247. [PMID: 35744765 PMCID: PMC9228389 DOI: 10.3390/microorganisms10061247] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/06/2022] [Accepted: 06/09/2022] [Indexed: 01/01/2023] Open
Abstract
Bacteria use a cell-cell communication process called quorum sensing (QS) to orchestrate collective behaviors. QS relies on the group-wide detection of extracellular signal molecules called autoinducers (AI). Quorum sensing is required for virulence and biofilm formation in the human pathogen Pseudomonas aeruginosa. In P. aeruginosa, LasR and RhlR are homologous LuxR-type soluble transcription factor receptors that bind their cognate AIs and activate the expression of genes encoding functions required for virulence and biofilm formation. While some bacterial signal transduction pathways follow a linear circuit, as phosphoryl groups are passed from one carrier protein to another ultimately resulting in up- or down-regulation of target genes, the QS system in P. aeruginosa is a dense network of receptors and regulators with interconnecting regulatory systems and outputs. Once activated, it is not understood how LasR and RhlR establish their signaling hierarchy, nor is it clear how these pathway connections are regulated, resulting in chronic infection. Here, we reviewed the mechanisms of QS progression as it relates to bacterial pathogenesis and antimicrobial resistance and tolerance.
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26
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Yan K, Yin H, Wang J, Cai Y. Subtle relationships between Pseudomonas aeruginosa and fungi in patients with cystic fibrosis. Acta Clin Belg 2022; 77:425-435. [PMID: 33242290 DOI: 10.1080/17843286.2020.1852850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Cystic fibrosis (CF) is one of the most common hereditary lung diseases. Pseudomonas aeruginosa (PA), Aspergillus fumigatus (AF) and Candida albicans (CA) are the principal bacterial and fungal pathogens in the airways of CF patients. The interactions of coexisting bacterial-fungal pathogens are of great interest. In the present work, we reviewed the literature of available in vitro and in vivo studies, whereas most of the reports have shown that PA inhibits the growth of fungi through restriction of iron uptake and secretion of toxic substances. Fungi may also affect the growth or virulence of PA through their secreted molecules. To clarify the bacterial-fungal interaction, more in-depth and detailed studies are still needed, which will provide a better understanding of species, microbial population dynamics, and related mechanisms in CF patients.
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Affiliation(s)
| | | | | | - Yun Cai
- Department of Pharmacy, MedicalSupplies Center of Chinese PLA General Hospital, Beijing, China
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Boopathi S, Vashisth R, Mohanty AK, Jia AQ, Sivakumar N, Arockiaraj J. Bacillus subtilis BR4 derived stigmatellin Y interferes Pqs-PqsR mediated quorum sensing system of Pseudomonas aeruginosa. J Basic Microbiol 2022; 62:801-814. [PMID: 35355286 DOI: 10.1002/jobm.202200017] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/27/2022] [Accepted: 03/13/2022] [Indexed: 12/30/2022]
Abstract
Cell-to-cell communication is essentially required in bacteria for the production of multiple virulence factors and successful colonization in the host. Targeting the virulence factors production without hampering the growth of the pathogens is a potential strategy to control pathogenesis. To accomplish this, a total of 43 mangrove isolates were screened for quorum quenching (QQ) activity against Pseudomonas aeruginosa (PA), in which eight bacteria have shown antibiofilm activity without hampering the growth of the PA. Prominent QQ activity was observed in Bacillus subtilis BR4. Previously, we found that BR4 produces stigmatellin Y, a structural analogue of PQS signal of PA, which could competitively bind with PqsR receptor and inhibits the quorum sensing (QS) system of PA. Further, stigmatellin Y containing ethyl acetate extract (S-EAE) (100 µg ml-1 ) of BR4 significantly inhibits (p < 0.001) the biofilm formation of PA. Confocal laser scanning microscope (CLSM) and scanning electron microscope (SEM) analysis also fortified the QQ activity of BR4. Furthermore, S-EAE of BR4 (500 µg ml-1 ) has significantly reduced the production of virulence factors, including protease, elastase, pyocyanin and extracellular polysaccharides substances. Furthermore, liquid chromatography-mass spectrometry (LC-MS)/MS analysis affirms that BR4 intercepts the PQS-mediated QS system by reducing the synthesis of as many PQS signals, including precursor molecule (243.162313 Da) of PQS signal. Thus, S-EAE of B. subtilis BR4 could be used as a promising therapeutic agent to combat QS system-mediated pathogenesis of PA. Further therapeutic potentials of stigmatellin Y to be evaluated in clinical studies for the treatment of multidrug resistant PA.
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Affiliation(s)
- Seenivasan Boopathi
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, India
| | | | - Ashok Kumar Mohanty
- Cell Biology and Proteomics Lab, Animal Biotechnology Centre, National Dairy Research Institute, Karnal, Haryana, India
| | - Ai-Qun Jia
- School of Pharmaceutical Sciences, Key Laboratory of Tropical Biological Resources of Ministry Education, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China
| | - Natesan Sivakumar
- Department of Molecular Microbiology, School of Biotechnology, Madurai Kamaraj University, Madurai, Tamil Nadu, India
| | - Jesu Arockiaraj
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, India
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28
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Soil bacteria protect fungi from phenazines by acting as toxin sponges. Curr Biol 2022; 32:275-288.e5. [PMID: 34813731 PMCID: PMC8792240 DOI: 10.1016/j.cub.2021.11.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 08/12/2021] [Accepted: 11/01/2021] [Indexed: 01/26/2023]
Abstract
Many environmentally and clinically important fungi are sensitive to toxic, bacterially produced, redox-active molecules called phenazines. Despite being vulnerable to phenazine assault, fungi inhabit microbial communities that contain phenazine producers. Because many fungi cannot withstand phenazine challenge but some bacterial species can, we hypothesized that bacterial partners may protect fungi in phenazine-replete environments. From a single soil sample, we were able to co-isolate several such physically associated pairings. We discovered the novel species Paraburkholderia edwinii and demonstrated it can protect a co-isolated Aspergillus species from phenazine-1-carboxylic acid (PCA) by sequestering it, acting as a toxin sponge; in turn, it also gains protection. When challenged with PCA, P. edwinii changes its morphology, forming aggregates within the growing fungal colony. Further, the fungal partner triggers P. edwinii to sequester PCA and maintains conditions that limit PCA toxicity by promoting an anoxic and highly reducing environment. A mutagenic screen of P. edwinii revealed this protective program depends on the stress-inducible transcriptional repressor HrcA. We show that one relevant stressor in response to PCA challenge is fungal acidification and that acid stress causes P. edwinii to behave as though the fungus were present. Finally, we reveal this phenomenon as widespread among Paraburkholderia with moderate specificity among bacterial and fungal partners, including plant and human pathogens. Our discovery suggests a common mechanism by which fungi can gain access to phenazine-replete environments and provides a tractable model system for its study. These results have implications for how microbial communities in the rhizosphere as well as in plant and human infection sites negotiate community membership via a chemical dialectic.
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Tansho-Nagakawa S, Sato Y, Ubagai T, Kikuchi-Ueda T, Kamoshida GO, Nishida S, Ono Y. Histopathological Analysis of Acinetobacter baumannii Lung Infection in a Mouse Model. Pol J Microbiol 2022; 70:469-477. [PMID: 35003278 PMCID: PMC8702610 DOI: 10.33073/pjm-2021-044] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 10/31/2021] [Indexed: 11/20/2022] Open
Abstract
Acinetobacter baumannii is the main causative pathogen of nosocomial infections that causes severe infections in the lungs. In this study, we analyzed the histopathological characteristics of lung infection with two strains of A. baumannii (ATCC 19606 and the clinical isolate TK1090) and Pseudomonas aeruginosa PAO-1 in C3H/HeN mice to evaluate the virulence of A. baumannii. Survival was evaluated over 14 days. At 1, 2, 5, or 14 days postinfection, mice of C3H/HeN were sacrificed, and histopathological analysis of lung specimens was also performed. Histopathological changes and accumulation of neutrophils and macrophages in the lungs after infection with A. baumannii and P. aeruginosa were analyzed. Following intratracheal inoculation, the lethality of ATCC 19606- and TK1090-infected mice was lower than that of PAO-1-infected mice. However, when mice were inoculated with a sub-lethal dose of A. baumannii, the lung bacterial burden remained in the mice until 14 days post-infection. Additionally, histopathological analysis revealed that macrophages infiltrated the lung foci of ATCC 19606-, TK1090-, and PAO-1-infected mice. Although neutrophils infiltrated the lung foci of ATCC 19606- and TK1090-infected mice, they poorly infiltrated the lung foci of PAO-1-infected mice. Accumulation of these cells in the lung foci of ATCC 19606- and TK1090-infected mice, but not PAO-1-infected mice, was observed for 14 days post-infection. These results suggest that A. baumannii is not completely eliminated despite the infiltration of immune cells in the lungs and that inflammation lasts for prolonged periods in the lungs. Further studies are required to understand the mechanism of A. baumannii infection, and novel drugs and vaccines should be developed to prevent A. baumannii infection.
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Affiliation(s)
- Shigeru Tansho-Nagakawa
- Department of Microbiology and Immunology, Teikyo University School of Medicine, Tokyo, Japan
| | - Yoshinori Sato
- Department of Microbiology and Immunology, Teikyo University School of Medicine, Tokyo, Japan
| | - Tsuneyuki Ubagai
- Department of Microbiology and Immunology, Teikyo University School of Medicine, Tokyo, Japan
| | - Takane Kikuchi-Ueda
- Department of Microbiology and Immunology, Teikyo University School of Medicine, Tokyo, Japan
| | - G O Kamoshida
- Department of Microbiology and Immunology, Teikyo University School of Medicine, Tokyo, Japan
| | - Satoshi Nishida
- Department of Microbiology and Immunology, Teikyo University School of Medicine, Tokyo, Japan
| | - Yasuo Ono
- Department of Microbiology and Immunology, Teikyo University School of Medicine, Tokyo, Japan
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Walker JM, Sundarasivarao PYK, Thornton JM, Sochacki K, Rodriguez A, Spur BW, Acharya NK, Yin K. Resolvin D2 promotes host defense in a 2 - hit model of sepsis with secondary lung infection. Prostaglandins Other Lipid Mediat 2022; 159:106617. [PMID: 35007703 PMCID: PMC8920764 DOI: 10.1016/j.prostaglandins.2022.106617] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 12/30/2021] [Accepted: 01/03/2022] [Indexed: 12/17/2022]
Abstract
In the development of sepsis, there is early, massive inflammation which can lead to multiple organ failure. Later there is an immunosuppressed phase where the host is susceptible to secondary infections or is unable to clear existing infection. Specialized Pro-resolving Mediators (SPMs) are endogenously produced lipids which resolve infection by decreasing bacteria load and reducing systemic inflammatory response. There has been little work studying if SPMs given late, can promote host defense. We examined if an SPM, Resolvin D2 (RvD2) could promote host defense in a 2-hit mouse model of cecal ligation and puncture (CLP) sepsis and secondary Pseudomonas aeruginosa lung infection. RvD2 given 48 h after mild CLP (1st hit), increased gene expression of Toll-like receptor-2 (TLR-2) and alveolar macrophage/monocyte phagocytic ability compared to CLP mice given saline vehicle. In this model, RvD2 did not affect plasma IL-6 or IL-10. These effects induced by RvD2, lowered lung bacterial load and decreased mortality after the secondary infection of Pseudomonas aeruginosa (2nd hit). Splenic T-cell numbers were also increased in RvD2 treated mice compared to saline vehicle treated animals. The results suggest that RvD2 promoted mechanisms of host defense in a 2-hit model sepsis and secondary lung infection.
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Affiliation(s)
- J M Walker
- Department of Cell Biology and Neuroscience, Rowan University - School of Osteopathic Medicine, Stratford, NJ, USA
| | - P Y Kadiyam Sundarasivarao
- Department of Cell Biology and Neuroscience, Rowan University - School of Osteopathic Medicine, Stratford, NJ, USA
| | - J M Thornton
- Department of Cell Biology and Neuroscience, Rowan University - School of Osteopathic Medicine, Stratford, NJ, USA
| | - K Sochacki
- Department of Cell Biology and Neuroscience, Rowan University - School of Osteopathic Medicine, Stratford, NJ, USA
| | - A Rodriguez
- Department of Cell Biology and Neuroscience, Rowan University - School of Osteopathic Medicine, Stratford, NJ, USA
| | - B W Spur
- Department of Cell Biology and Neuroscience, Rowan University - School of Osteopathic Medicine, Stratford, NJ, USA
| | - N K Acharya
- Department of Cell Biology and Neuroscience, Rowan University - School of Osteopathic Medicine, Stratford, NJ, USA; Biomarker Discovery Center, New Jersey Institute of Successful Aging, Rowan University - School of Osteopathic Medicine, Stratford, NJ, USA
| | - K Yin
- Department of Cell Biology and Neuroscience, Rowan University - School of Osteopathic Medicine, Stratford, NJ, USA.
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Duplantier M, Lohou E, Sonnet P. Quorum Sensing Inhibitors to Quench P. aeruginosa Pathogenicity. Pharmaceuticals (Basel) 2021; 14:1262. [PMID: 34959667 PMCID: PMC8707152 DOI: 10.3390/ph14121262] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/01/2021] [Accepted: 12/02/2021] [Indexed: 12/22/2022] Open
Abstract
The emergence and the dissemination of multidrug-resistant bacteria constitute a major public health issue. Among incriminated Gram-negative bacteria, Pseudomonas aeruginosa has been designated by the WHO as a critical priority threat. During the infection process, this pathogen secretes various virulence factors in order to adhere and colonize host tissues. Furthermore, P. aeruginosa has the capacity to establish biofilms that reinforce its virulence and intrinsic drug resistance. The regulation of biofilm and virulence factor production of this micro-organism is controlled by a specific bacterial communication system named Quorum Sensing (QS). The development of anti-virulence agents targeting QS that could attenuate P. aeruginosa pathogenicity without affecting its growth seems to be a promising new therapeutic strategy. This could prevent the selective pressure put on bacteria by the conventional antibiotics that cause their death and promote resistant strain survival. This review describes the QS-controlled pathogenicity of P. aeruginosa and its different specific QS molecular pathways, as well as the recent advances in the development of innovative QS-quenching anti-virulence agents to fight anti-bioresistance.
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Affiliation(s)
| | | | - Pascal Sonnet
- AGIR, UR4294, UFR of Pharmacy, Jules Verne University of Picardie, 80037 Amiens, France; (M.D.); (E.L.)
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Spiga L, Jimenez AG, Santos RL, Winter SE. How microbiological tests reflect bacterial pathogenesis and host adaptation. Braz J Microbiol 2021; 52:1745-1753. [PMID: 34251610 PMCID: PMC8578236 DOI: 10.1007/s42770-021-00571-7] [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: 01/18/2021] [Accepted: 06/29/2021] [Indexed: 10/20/2022] Open
Abstract
Historically, clinical microbiological laboratories have often relied on isolation of pure cultures and phenotypic testing to identify microorganisms. These clinical tests are often based on specific biochemical reactions, growth characteristics, colony morphology, and other physiological aspects. The features used for identification in clinical laboratories are highly conserved and specific for a given group of microbes. We speculate that these features might be the result of evolutionary selection and thus may reflect aspects of the life cycle of the organism and pathogenesis. Indeed, several of the metabolic pathways targeted by diagnostic tests in some cases may represent mechanisms for host colonization or pathogenesis. Examples include, but are not restricted to, Staphylococcus aureus, Pseudomonas aeruginosa, Klebsiella pneumoniae, Salmonella enterica, Shigella spp., and enteroinvasive Escherichia coli (EIEC). Here, we provide an overview of how some common tests reflect molecular mechanisms of bacterial pathogenesis.
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Affiliation(s)
- Luisella Spiga
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Angel G Jimenez
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Renato L Santos
- Departamento de Clínica E Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Sebastian E Winter
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
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Goutas A, Outskouni Z, Papathanasiou I, Satra M, Koliakos G, Trachana V. Dysregulation of Caveolin-1 Phosphorylation and Nuclear Translocation Is Associated with Senescence Onset. Cells 2021; 10:cells10112939. [PMID: 34831162 PMCID: PMC8616550 DOI: 10.3390/cells10112939] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/22/2021] [Accepted: 10/25/2021] [Indexed: 11/30/2022] Open
Abstract
We recently reported that the inability of osteoarthritic (OA) chondrocytes to repair oxidative stress (OS) induced DNA damage is linked to Cav-1 overexpression/improper localization. We speculated that the senescent status of OA cells was responsible for this Cav-1 dysregulation. Here, to further investigate this hypothesis, we used Wharton Jelly derived mesenchymal stem cells (WJ-MSCs) and investigated Cav-1 function as cells reached replicative senescence or upon stress induced senescence (SIPS). We showed that Cav-1 is upregulated, phosphorylated and translocated to the nucleus in young WJ-MSCs upon acute exogenous OS, and that it returns back to basal/nonphosphorylated levels and exports the nucleus in the recovery phase. However, as cells reach senescence, this regulation is lost. OS did not induce any Cav-1-mediated response, which is concomitant with the inability of older cells to restore DNA damage. Furthermore, downregulation of Cav-1 resulted in persistent OS-induced DNA damage and subsequent onset of senescence. We also report that the establishment of senescence is mediated by autophagy stimulation, since downregulation of autophagy key molecule Atg5, simultaneously with Cav-1 downregulation, was found to inhibit SIPS. Basically, we propose that Cav-1 involvement in DNA damage response can lead to senescence, either because the damage is extensive or because Cav-1 is absent/unable to perform its homeostatic role.
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Affiliation(s)
- Andreas Goutas
- Department of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (Z.O.); (I.P.); (M.S.)
| | - Zozo Outskouni
- Department of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (Z.O.); (I.P.); (M.S.)
| | - Ioanna Papathanasiou
- Department of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (Z.O.); (I.P.); (M.S.)
| | - Maria Satra
- Department of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (Z.O.); (I.P.); (M.S.)
| | - George Koliakos
- Biohellenika, Biotechnology Company, 57001 Thessaloniki, Greece;
- Department of Biological Chemistry, Medical School, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Varvara Trachana
- Department of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (Z.O.); (I.P.); (M.S.)
- Correspondence: ; Tel.: +30-2410-685624
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Ashour EA, Farsi RM, Alaidaroos BA, Abdel-Moneim AME, El-Saadony MT, Osman AO, Abou Sayed-Ahmed ET, Albaqami NM, Shafi ME, Taha AE, Abd El-Hack ME. Impacts of dietary supplementation of pyocyanin powder on growth performance, carcase traits, blood chemistry, meat quality and gut microbial activity of broilers. ITALIAN JOURNAL OF ANIMAL SCIENCE 2021. [DOI: 10.1080/1828051x.2021.1924087] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Reem M. Farsi
- Department of Biological Sciences, Zoology, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Bothaina A. Alaidaroos
- Department of Biological Sciences, Zoology, King Abdulaziz University, Jeddah, Saudi Arabia
| | | | | | - Ali O. Osman
- Biochemistry Department, Zagazig University, Zagazig, Egypt
| | | | - Najah M. Albaqami
- Department of Biological Sciences, Zoology, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Manal E. Shafi
- Department of Biological Sciences, Zoology, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ayman E. Taha
- Department of Animal Husbandry and Animal Wealth Development, Alexandria University, Alexandria, Egypt
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Chadha J, Harjai K, Chhibber S. Revisiting the virulence hallmarks of Pseudomonas aeruginosa: a chronicle through the perspective of quorum sensing. Environ Microbiol 2021; 24:2630-2656. [PMID: 34559444 DOI: 10.1111/1462-2920.15784] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 12/15/2022]
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen and the leading cause of mortality among immunocompromised patients in clinical setups. The hallmarks of virulence in P. aeruginosa encompass six biologically competent attributes that cumulatively drive disease progression in a multistep manner. These multifaceted hallmarks lay the principal foundation for rationalizing the complexities of pseudomonal infections. They include factors for host colonization and bacterial motility, biofilm formation, production of destructive enzymes, toxic secondary metabolites, iron-chelating siderophores and toxins. This arsenal of virulence hallmarks is fostered and stringently regulated by the bacterial signalling system called quorum sensing (QS). The central regulatory functions of QS in controlling the timely expression of these virulence hallmarks for adaptation and survival drive the disease outcome. This review describes the intricate mechanisms of QS in P. aeruginosa and its role in shaping bacterial responses, boosting bacterial fitness. We summarize the virulence hallmarks of P. aeruginosa, relating them with the QS circuitry in clinical infections. We also examine the role of QS in the development of drug resistance and propose a novel antivirulence therapy to combat P. aeruginosa infections. This can prove to be a next-generation therapy that may eventually become refractory to the use of conventional antimicrobial treatments.
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Affiliation(s)
- Jatin Chadha
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Kusum Harjai
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Sanjay Chhibber
- Department of Microbiology, Panjab University, Chandigarh, India
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36
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Gupte A, Jyot J, Ravi M, Ramphal R. High pyocyanin production and non-motility of Pseudomonas aeruginosa isolates are correlated with septic shock or death in bacteremic patients. PLoS One 2021; 16:e0253259. [PMID: 34115807 PMCID: PMC8195364 DOI: 10.1371/journal.pone.0253259] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 06/01/2021] [Indexed: 12/26/2022] Open
Abstract
Studies of the outcome of Pseudomonas aeruginosa bacteremia (Pab) have focused mainly on antibiotic appropriateness. However, P. aeruginosa possesses many virulence factors whose roles in outcomes have not been examined in humans, except for the type III secretion system (T3SS) toxins. The purpose of this study was to examine the role of virulence factors other than the T3SS toxins. Bacterial isolates were collected from 75 patients who suffered from Pa blood stream infections. Host factors such as neutropenia, immunosuppression, comorbidities, time to effective antibiotics, source of bacteremia, and presence of multidrug resistant (MDR) isolate were studied. The isolates were analyzed for the presence of toxin genes, proteolytic activity, swimming and twitching motility, and pyocyanin production. The data were analyzed to ascertain which virulence factors correlated with poor outcomes defined as septic shock or death (SS) within 7 days. Septic shock or death occurred in 25/75 patients. Univariate analysis identified age as a host factor that exerted a significant effect on these outcomes. Ineffective antibiotics administered during the first 24 hours of treatment or MDR P. aeruginosa did not influence the frequency of SS, nor did the presence of lasB, exoA, exoS exoU, plcH genes and proteolytic activity. However, 6/8 patients infected with non-motile isolates, developed SS, p = 0.014 and 5/6 isolates that produced large amounts of pyocyanin (>18ug/ml), were associated with SS, p = 0.014. Multivariate analysis indicated that the odds ratio (OR) for development of SS with a non-motile isolate was 6.8, with a 95% confidence interval (CI) (1.37, 51.5), p = 0.030 and with high pyocyanin producing isolates, an OR of 16.9, 95% CI = (2.27, 360), p = .017. This study evaluating the role of microbial factors that significantly effect outcomes following Pa bloodstream infection suggests that P. aeruginosa strains showing high pyocyanin production and the lack of motility independently increase the risk of SS.
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Affiliation(s)
- Asmita Gupte
- Division of Infectious Diseases and Global Medicine, Department of Medicine, University of Florida, Gainesville, Florida, United States of America
- * E-mail: (AG); (RR)
| | - Jeevan Jyot
- Division of Infectious Diseases and Global Medicine, Department of Medicine, University of Florida, Gainesville, Florida, United States of America
- Department of Pharmaceutical Outcomes & Policy, College of Pharmacy, University of Florida, Gainesville, Florida, United States of America
| | - Malleswari Ravi
- Division of Infectious Diseases and Global Medicine, Department of Medicine, University of Florida, Gainesville, Florida, United States of America
| | - Reuben Ramphal
- Division of Infectious Diseases and Global Medicine, Department of Medicine, University of Florida, Gainesville, Florida, United States of America
- * E-mail: (AG); (RR)
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Di Bonaventura G, Pompilio A. In Vitro Antimicrobial Susceptibility Testing of Biofilm-Growing Bacteria: Current and Emerging Methods. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1369:33-51. [PMID: 33963526 DOI: 10.1007/5584_2021_641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The antibiotic susceptibility of bacterial pathogens is typically determined based on planktonic cells, as recommended by several international guidelines. However, most of chronic infections - such as those established in wounds, cystic fibrosis lung, and onto indwelling devices - are associated to the formation of biofilms, communities of clustered bacteria attached onto a surface, abiotic or biotic, and embedded in an extracellular matrix produced by the bacteria and complexed with molecules from the host. Sessile microorganisms show significantly increased tolerance/resistance to antibiotics compared with planktonic counterparts. Consequently, antibiotic concentrations used in standard antimicrobial susceptibility tests, although effective against planktonic bacteria in vitro, are not predictive of the concentrations required to eradicate biofilm-related infections, thus leading to treatment failure, chronicization and removal of material in patients with indwelling medical devices.Meeting the need for the in vitro evaluation of biofilm susceptibility to antibiotics, here we reviewed several methods proposed in literature highlighting their advantages and limitations to guide scientists towards an appropriate choice.
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Affiliation(s)
- Giovanni Di Bonaventura
- Department of Medical, Oral and Biotechnological Sciences, and Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy. .,Laboratory of Clinical Microbiology, Chieti, Italy.
| | - Arianna Pompilio
- Department of Medical, Oral and Biotechnological Sciences, and Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy.,Laboratory of Clinical Microbiology, Chieti, Italy
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38
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Hreha TN, Foreman S, Duran-Pinedo A, Morris AR, Diaz-Rodriguez P, Jones JA, Ferrara K, Bourges A, Rodriguez L, Koffas MAG, Hahn M, Hauser AR, Barquera B. The three NADH dehydrogenases of Pseudomonas aeruginosa: Their roles in energy metabolism and links to virulence. PLoS One 2021; 16:e0244142. [PMID: 33534802 PMCID: PMC7857637 DOI: 10.1371/journal.pone.0244142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 12/03/2020] [Indexed: 11/19/2022] Open
Abstract
Pseudomonas aeruginosa is a ubiquitous opportunistic pathogen which relies on a highly adaptable metabolism to achieve broad pathogenesis. In one example of this flexibility, to catalyze the NADH:quinone oxidoreductase step of the respiratory chain, P. aeruginosa has three different enzymes: NUO, NQR and NDH2, all of which carry out the same redox function but have different energy conservation and ion transport properties. In order to better understand the roles of these enzymes, we constructed two series of mutants: (i) three single deletion mutants, each of which lacks one NADH dehydrogenase and (ii) three double deletion mutants, each of which retains only one of the three enzymes. All of the mutants grew approximately as well as wild type, when tested in rich and minimal medium and in a range of pH and [Na+] conditions, except that the strain with only NUO (ΔnqrFΔndh) has an extended lag phase. During exponential phase, the NADH dehydrogenases contribute to total wild-type activity in the following order: NQR > NDH2 > NUO. Some mutants, including the strain without NQR (ΔnqrF) had increased biofilm formation, pyocyanin production, and killed more efficiently in both macrophage and mouse infection models. Consistent with this, ΔnqrF showed increased transcription of genes involved in pyocyanin production.
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Affiliation(s)
- Teri N. Hreha
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Sara Foreman
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Ana Duran-Pinedo
- Department of Oral Biology, University of Florida, College of Dentistry, Gainesville, Florida, United States of America
| | - Andrew R. Morris
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Patricia Diaz-Rodriguez
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - J. Andrew Jones
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Kristina Ferrara
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Anais Bourges
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Lauren Rodriguez
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Mattheos A. G. Koffas
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Mariah Hahn
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Alan R. Hauser
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Blanca Barquera
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- * E-mail:
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Kim W, Jang JH, Zhong X, Seo H, Surh YJ. 15-Deoxy-△ 12,14-Prostaglandin J 2 Promotes Resolution of Experimentally Induced Colitis. Front Immunol 2021; 12:615803. [PMID: 33633749 PMCID: PMC7901909 DOI: 10.3389/fimmu.2021.615803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 01/04/2021] [Indexed: 12/14/2022] Open
Abstract
Uncontrolled macrophage functions cause failure to resolve gut inflammation and has been implicated in the pathogenesis of inflammatory bowel disease (IBD). 15-Deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2), one of endogenous lipid mediators formed from arachidonic acid during the inflammatory process, has been reported to terminate inflammation. However, the pro-resolving effect of 15d-PGJ2 on intestinal inflammation and underlying molecular mechanisms remain largely unknown. In the present study, we examined the effects of 15d-PGJ2 on the resolution of dextran sulfate sodium (DSS)-induced murine colitis that mimics human IBD. Pharmacologic inhibition of prostaglandin D synthase (PGDS) responsible for the synthesis of 15d-PGJ2 hampered resolution of inflammation in the colonic mucosa of mice treated with DSS. Notably, intraperitoneal injection of 15d-PGJ2 accelerated the resolution of experimentally induced colitis. 15d-PGJ2 treatment reduced the number of neutrophils and M1 macrophages, while it increased the proportion of M2 macrophages. Moreover, 15d-PGJ2 treated mice exhibited the significantly reduced proportion of macrophages expressing the pro-inflammatory cytokine, IL-6 with concomitant suppression of STAT3 phosphorylation in the colonic mucosa of mice administered 2.5% DSS in drinking water. Taken together, these findings clearly indicate that 15d-PGJ2, endogenously generated from arachidonic acid by cyclooxygenase-2 and PGDS activities in inflamed tissue, promotes resolution of intestinal colitis.
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Affiliation(s)
- Wonki Kim
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Jeong-Hoon Jang
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Xiancai Zhong
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Hyungseok Seo
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, South Korea
| | - Young-Joon Surh
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea.,Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, South Korea.,Cancer Research Institute, Seoul National University, Seoul, South Korea
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40
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Yashkin A, Rayo J, Grimm L, Welch M, Meijler MM. Short-chain reactive probes as tools to unravel the Pseudomonas aeruginosa quorum sensing regulon. Chem Sci 2021; 12:4570-4581. [PMID: 34163722 PMCID: PMC8179429 DOI: 10.1039/d0sc04444j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 01/28/2021] [Indexed: 11/21/2022] Open
Abstract
In recent years, the world has seen a troubling increase in antibiotic resistance among bacterial pathogens. In order to provide alternative strategies to combat bacterial infections, it is crucial deepen our understanding into the mechanisms that pathogens use to thrive in complex environments. Most bacteria use sophisticated chemical communication systems to sense their population density and coordinate gene expression in a collective manner, a process that is termed "quorum sensing" (QS). The human pathogen Pseudomonas aeruginosa uses several small molecules to regulate QS, and one of them is N-butyryl-l-homoserine lactone (C4-HSL). Using an activity-based protein profiling (ABPP) strategy, we designed biomimetic probes with a photoreactive group and a 'click' tag as an analytical handle. Using these probes, we have identified previously uncharacterized proteins that are part of the P. aeruginosa QS network, and we uncovered an additional role for this natural autoinducer in the virulence regulon of P. aeruginosa, through its interaction with PhzB1/2 that results in inhibition of pyocyanin production.
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Affiliation(s)
- Alex Yashkin
- Dept. of Chemistry, The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev Be'er Sheva 8410501 Israel
| | - Josep Rayo
- Dept. of Chemistry, The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev Be'er Sheva 8410501 Israel
| | - Larson Grimm
- Dept. of Biochemistry, University of Cambridge UK
| | - Martin Welch
- Dept. of Biochemistry, University of Cambridge UK
| | - Michael M Meijler
- Dept. of Chemistry, The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev Be'er Sheva 8410501 Israel
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41
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Tran T, Dawrs SN, Norton GJ, Virdi R, Honda JR. Brought to you courtesy of the red, white, and blue-pigments of nontuberculous mycobacteria. AIMS Microbiol 2020; 6:434-450. [PMID: 33364537 PMCID: PMC7755587 DOI: 10.3934/microbiol.2020026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 11/10/2020] [Indexed: 11/18/2022] Open
Abstract
Pigments are chromophores naturally synthesized by animals, plants, and microorganisms, as well as produced synthetically for a wide variety of industries such as food, pharmaceuticals, and textiles. Bacteria produce various pigments including melanin, pyocyanin, bacteriochlorophyll, violacein, prodigiosin, and carotenoids that exert diverse biological activities as antioxidants and demonstrate anti-inflammatory, anti-cancer, and antimicrobial properties. Nontuberculous mycobacteria (NTM) include over 200 environmental and acid-fast species; some of which can cause opportunistic disease in humans. Early in the study of mycobacteriology, the vast majority of mycobacteria were not known to synthesize pigments, particularly NTM isolates of clinical significance such as the Mycobacterium avium complex (MAC) species. This paper reviews the overall understanding of microbial pigments, their applications, as well as highlights what is currently known about pigments produced by NTM, the circumstances that trigger their production, and their potential roles in NTM survival and virulence.
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Affiliation(s)
- Tru Tran
- College of Osteopathic Medicine, Lake Erie College of Osteopathic Medicine, Bradenton, Florida, USA
| | - Stephanie N Dawrs
- Center for Genes, Environment, and Health; Department of Immunology and Genomic Research, National Jewish Health, Denver, Colorado, USA
| | - Grant J Norton
- Center for Genes, Environment, and Health; Department of Immunology and Genomic Research, National Jewish Health, Denver, Colorado, USA
| | - Ravleen Virdi
- Center for Genes, Environment, and Health; Department of Immunology and Genomic Research, National Jewish Health, Denver, Colorado, USA
| | - Jennifer R Honda
- Center for Genes, Environment, and Health; Department of Immunology and Genomic Research, National Jewish Health, Denver, Colorado, USA
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42
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Fuentes-Gutiérrez A, Curiel-Quesada E, Correa-Basurto J, Martínez-Muñoz A, Reyes-Arellano A. N-Heterocycles Scaffolds as Quorum Sensing Inhibitors. Design, Synthesis, Biological and Docking Studies. Int J Mol Sci 2020; 21:E9512. [PMID: 33327584 PMCID: PMC7765044 DOI: 10.3390/ijms21249512] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/03/2020] [Accepted: 12/10/2020] [Indexed: 12/14/2022] Open
Abstract
Quorum sensing is a communication system among bacteria to sense the proper time to express their virulence factors. Quorum sensing inhibition is a therapeutic strategy to block bacterial mechanisms of virulence. The aim of this study was to synthesize and evaluate new bioisosteres of N-acyl homoserine lactones as Quorum sensing inhibitors in Chromobacterium violaceum CV026 by quantifying the specific production of violacein. Five series of compounds with different heterocyclic scaffolds were synthesized in good yields: thiazoles, 16a-c, thiazolines 17a-c, benzimidazoles 18a-c, pyridines 19a-c and imidazolines 32a-c. All 15 compounds showed activity as Quorum sensing inhibitors except 16a. Compounds 16b, 17a-c, 18a, 18c, 19c and 32b exhibited activity at concentrations of 10 µM and 100 µM, highlighting the activity of benzimidazole 18a (IC50 = 36.67 µM) and 32b (IC50 = 85.03 µM). Pyridine 19c displayed the best quorum sensing inhibition activity (IC50 = 9.66 µM). Molecular docking simulations were conducted for all test compounds on the Chromobacterium violaceum CviR protein to gain insight into the process of quorum sensing inhibition. The in-silico data reveal that all 15 the compounds have higher affinity for the protein than the native AHL ligand (1). A strong correlation was found between the theoretical and experimental results.
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Affiliation(s)
- Alfredo Fuentes-Gutiérrez
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional (ENCB-IPN), Ciudad de México 11340, Mexico;
| | - Everardo Curiel-Quesada
- Departamento de Bioquímica, Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional (ENCB-IPN), Ciudad de México 11340, Mexico;
| | - José Correa-Basurto
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotecnológica, Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina del Instituto Politécnico Nacional, Ciudad de México 11340, Mexico; (J.C.-B.); (A.M.-M.)
| | - Alberto Martínez-Muñoz
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotecnológica, Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina del Instituto Politécnico Nacional, Ciudad de México 11340, Mexico; (J.C.-B.); (A.M.-M.)
| | - Alicia Reyes-Arellano
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional (ENCB-IPN), Ciudad de México 11340, Mexico;
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Azuama OC, Ortiz S, Quirós-Guerrero L, Bouffartigues E, Tortuel D, Maillot O, Feuilloley M, Cornelis P, Lesouhaitier O, Grougnet R, Boutefnouchet S, Wolfender JL, Chevalier S, Tahrioui A. Tackling Pseudomonas aeruginosa Virulence by Mulinane-Like Diterpenoids from Azorella atacamensis. Biomolecules 2020; 10:biom10121626. [PMID: 33276611 PMCID: PMC7761567 DOI: 10.3390/biom10121626] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 11/30/2020] [Accepted: 11/30/2020] [Indexed: 12/28/2022] Open
Abstract
Pseudomonas aeruginosa is an important multidrug-resistant human pathogen by dint of its high intrinsic, acquired, and adaptive resistance mechanisms, causing great concern for immune-compromised individuals and public health. Additionally, P. aeruginosa resilience lies in the production of a myriad of virulence factors, which are known to be tightly regulated by the quorum sensing (QS) system. Anti-virulence therapy has been adopted as an innovative alternative approach to circumvent bacterial antibiotic resistance. Since plants are known repositories of natural phytochemicals, herein, we explored the anti-virulence potential of Azorella atacamensis, a medicinal plant from the Taira Atacama community (Calama, Chile), against P. aeruginosa. Interestingly, A. atacamensis extract (AaE) conferred a significant protection for human lung cells and Caenorhabditis elegans nematodes towards P. aeruginosa pathogenicity. The production of key virulence factors was decreased upon AaE exposure without affecting P. aeruginosa growth. In addition, AaE was able to decrease QS-molecules production. Furthermore, metabolite profiling of AaE and its derived fractions achieved by combination of a molecular network and in silico annotation allowed the putative identification of fourteen diterpenoids bearing a mulinane-like skeleton. Remarkably, this unique interesting group of diterpenoids seems to be responsible for the interference with virulence factors as well as on the perturbation of membrane homeostasis of P. aeruginosa. Hence, there was a significant increase in membrane stiffness, which appears to be modulated by the cell wall stress response ECFσ SigX, an extracytoplasmic function sigma factor involved in membrane homeostasis as well as P. aeruginosa virulence.
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Affiliation(s)
- Onyedikachi Cecil Azuama
- Laboratoire de Microbiologie Signaux et Microenvironnement, Normandie Université, Université de Rouen Normandie, LMSM EA4312, 27000 Évreux, France; (O.C.A.); (E.B.); (D.T.); (O.M.); (M.F.); (P.C.); (O.L.); (S.C.)
- Fédération de Recherche Sécurité Sanitaire, Bien-Être, Aliments Durables (SéSAD), Normandie Université, Université de Rouen Normandie, 27000 Évreux, France
- Department of Biological Sciences, Alex-Ekwueme Federal University, Ndufu Alike Ikwo PMB1010, Nigeria
| | - Sergio Ortiz
- Équipe Produits Naturels, Analyses et Synthèses (PNAS), CiTCoM UMR 8038 CNRS, Faculté de Pharmacie, Université de Paris, 75006 Paris, France; (S.O.); (R.G.); (S.B.)
| | - Luis Quirós-Guerrero
- Phytochemistry and Bioactive Natural Products, School of Pharmaceutical Science, University of Geneva, 1211 Geneva, Switzerland; (L.Q.-G.); (J.-L.W.)
- Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, CMU, 1211 Geneva, Switzerland
| | - Emeline Bouffartigues
- Laboratoire de Microbiologie Signaux et Microenvironnement, Normandie Université, Université de Rouen Normandie, LMSM EA4312, 27000 Évreux, France; (O.C.A.); (E.B.); (D.T.); (O.M.); (M.F.); (P.C.); (O.L.); (S.C.)
- Fédération de Recherche Sécurité Sanitaire, Bien-Être, Aliments Durables (SéSAD), Normandie Université, Université de Rouen Normandie, 27000 Évreux, France
| | - Damien Tortuel
- Laboratoire de Microbiologie Signaux et Microenvironnement, Normandie Université, Université de Rouen Normandie, LMSM EA4312, 27000 Évreux, France; (O.C.A.); (E.B.); (D.T.); (O.M.); (M.F.); (P.C.); (O.L.); (S.C.)
- Fédération de Recherche Sécurité Sanitaire, Bien-Être, Aliments Durables (SéSAD), Normandie Université, Université de Rouen Normandie, 27000 Évreux, France
| | - Olivier Maillot
- Laboratoire de Microbiologie Signaux et Microenvironnement, Normandie Université, Université de Rouen Normandie, LMSM EA4312, 27000 Évreux, France; (O.C.A.); (E.B.); (D.T.); (O.M.); (M.F.); (P.C.); (O.L.); (S.C.)
- Fédération de Recherche Sécurité Sanitaire, Bien-Être, Aliments Durables (SéSAD), Normandie Université, Université de Rouen Normandie, 27000 Évreux, France
| | - Marc Feuilloley
- Laboratoire de Microbiologie Signaux et Microenvironnement, Normandie Université, Université de Rouen Normandie, LMSM EA4312, 27000 Évreux, France; (O.C.A.); (E.B.); (D.T.); (O.M.); (M.F.); (P.C.); (O.L.); (S.C.)
- Fédération de Recherche Sécurité Sanitaire, Bien-Être, Aliments Durables (SéSAD), Normandie Université, Université de Rouen Normandie, 27000 Évreux, France
| | - Pierre Cornelis
- Laboratoire de Microbiologie Signaux et Microenvironnement, Normandie Université, Université de Rouen Normandie, LMSM EA4312, 27000 Évreux, France; (O.C.A.); (E.B.); (D.T.); (O.M.); (M.F.); (P.C.); (O.L.); (S.C.)
- Fédération de Recherche Sécurité Sanitaire, Bien-Être, Aliments Durables (SéSAD), Normandie Université, Université de Rouen Normandie, 27000 Évreux, France
| | - Olivier Lesouhaitier
- Laboratoire de Microbiologie Signaux et Microenvironnement, Normandie Université, Université de Rouen Normandie, LMSM EA4312, 27000 Évreux, France; (O.C.A.); (E.B.); (D.T.); (O.M.); (M.F.); (P.C.); (O.L.); (S.C.)
- Fédération de Recherche Sécurité Sanitaire, Bien-Être, Aliments Durables (SéSAD), Normandie Université, Université de Rouen Normandie, 27000 Évreux, France
| | - Raphaël Grougnet
- Équipe Produits Naturels, Analyses et Synthèses (PNAS), CiTCoM UMR 8038 CNRS, Faculté de Pharmacie, Université de Paris, 75006 Paris, France; (S.O.); (R.G.); (S.B.)
| | - Sabrina Boutefnouchet
- Équipe Produits Naturels, Analyses et Synthèses (PNAS), CiTCoM UMR 8038 CNRS, Faculté de Pharmacie, Université de Paris, 75006 Paris, France; (S.O.); (R.G.); (S.B.)
| | - Jean-Luc Wolfender
- Phytochemistry and Bioactive Natural Products, School of Pharmaceutical Science, University of Geneva, 1211 Geneva, Switzerland; (L.Q.-G.); (J.-L.W.)
- Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, CMU, 1211 Geneva, Switzerland
| | - Sylvie Chevalier
- Laboratoire de Microbiologie Signaux et Microenvironnement, Normandie Université, Université de Rouen Normandie, LMSM EA4312, 27000 Évreux, France; (O.C.A.); (E.B.); (D.T.); (O.M.); (M.F.); (P.C.); (O.L.); (S.C.)
- Fédération de Recherche Sécurité Sanitaire, Bien-Être, Aliments Durables (SéSAD), Normandie Université, Université de Rouen Normandie, 27000 Évreux, France
| | - Ali Tahrioui
- Laboratoire de Microbiologie Signaux et Microenvironnement, Normandie Université, Université de Rouen Normandie, LMSM EA4312, 27000 Évreux, France; (O.C.A.); (E.B.); (D.T.); (O.M.); (M.F.); (P.C.); (O.L.); (S.C.)
- Fédération de Recherche Sécurité Sanitaire, Bien-Être, Aliments Durables (SéSAD), Normandie Université, Université de Rouen Normandie, 27000 Évreux, France
- Correspondence: ; Tel.: +33-232291560; Fax: +33-232291550
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Goutas A, Papathanasiou I, Mourmoura E, Tsesmelis K, Tsezou A, Trachana V. Oxidative Stress Response Is Mediated by Overexpression and Spatiotemporal Regulation of Caveolin-1. Antioxidants (Basel) 2020; 9:antiox9080766. [PMID: 32824727 PMCID: PMC7464519 DOI: 10.3390/antiox9080766] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/13/2020] [Accepted: 08/16/2020] [Indexed: 12/16/2022] Open
Abstract
Oxidative stress (OS) has been linked to the aetiology of many diseases including osteoarthritis (OA). Recent studies have shown that caveolin-1—a structural protein of plasma membrane’s caveolae—is upregulated in response to OS. Here, we explore the function of caveolin-1 in chondrocytes derived from healthy individuals (control) and OA patients that were subjected to exogenous OS. We showed that caveolin-1 was upregulated in response to acute OS in the control, but not in OA chondrocytes. Moreover, OS-induced DNA damage analysis revealed that control cells started repairing the DNA lesions 6 h post-oxidative treatment, while OA cells seemed unable to restore these damages. Importantly, in the control cells, we observed a translocation of caveolin-1 from the membrane/cytoplasm in and out of the nucleus, which coincided with the appearance and restoration of DNA lesions. When caveolin-1 was prevented from translocating to the nucleus, the control cells were unable to repair DNA damage. In OA cells, no such translocation of caveolin-1 was observed, which could account for their inability to repair DNA damage. Taken together, these results provide novel insights considering the role of caveolin-1 in response to OS-induced DNA damage while revealing its implication in the pathophysiology of OA.
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Affiliation(s)
- Andreas Goutas
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (K.T.); (A.T.)
| | - Ioanna Papathanasiou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (I.P.); (E.M.)
| | - Evanthia Mourmoura
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (I.P.); (E.M.)
| | - Konstantinos Tsesmelis
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (K.T.); (A.T.)
| | - Aspasia Tsezou
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (K.T.); (A.T.)
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (I.P.); (E.M.)
| | - Varvara Trachana
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (K.T.); (A.T.)
- Correspondence:
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45
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Mishra R, Kushveer JS, Khan MIK, Pagal S, Meena CK, Murali A, Dhayalan A, Venkateswara Sarma V. 2,4-Di-Tert-Butylphenol Isolated From an Endophytic Fungus, Daldinia eschscholtzii, Reduces Virulence and Quorum Sensing in Pseudomonas aeruginosa. Front Microbiol 2020; 11:1668. [PMID: 32849344 PMCID: PMC7418596 DOI: 10.3389/fmicb.2020.01668] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 06/25/2020] [Indexed: 02/01/2023] Open
Abstract
Pseudomonas aeruginosa is among the top three gram-negative bacteria according to the WHO’s critical priority list of pathogens against which newer antibiotics are urgently needed and considered a global threat due to multiple drug resistance. This situation demands unconventional antimicrobial strategies such as the inhibition of quorum sensing to alleviate the manifestation of classical resistance mechanisms. Here, we report that 2,4-di-tert-butylphenol (2,4-DBP), isolated from an endophytic fungus, Daldinia eschscholtzii, inhibits the quorum-sensing properties of P. aeruginosa. We have found that treating P. aeruginosa with 2,4-DBP substantially reduced the secretion of virulence factors as well as biofilm, and its associated factors that are controlled by quorum sensing, in a dose-dependent manner. Concomitantly, 2,4-DBP also significantly reduced the expression of quorum sensing-related genes, i.e., lasI, lasR, rhlI, and rhlR significantly. Importantly, 2,4-DBP restricted the adhesion and invasion of P. aeruginosa to the A549 lung alveolar carcinoma cells. In addition, bactericidal assay with 2,4-DBP exhibited synergism with ampicillin to kill P. aeruginosa. Furthermore, our computational studies predicted that 2,4-DBP could bind to the P. aeruginosa quorum-sensing receptors LasR and RhlR. Collectively, these data suggest that 2,4-DBP can be exploited as a standalone drug or in combination with antibiotic(s) as an anti-virulence and anti-biofilm agent to combat the multidrug resistant P. aeruginosa infection.
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Affiliation(s)
- Rashmi Mishra
- Department of Biotechnology, Pondicherry University, Puducherry, India
| | | | - Mohd Imran K Khan
- Department of Biotechnology, Pondicherry University, Puducherry, India
| | - Sudhakar Pagal
- Department of Biotechnology, Pondicherry University, Puducherry, India
| | | | - Ayaluru Murali
- Centre for Bioinformatics, Pondicherry University, Puducherry, India
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McQuillan K, Gargoum F, Murphy MP, McElvaney OJ, McElvaney NG, Reeves EP. Targeting IgG Autoantibodies for Improved Cytotoxicity of Bactericidal Permeability Increasing Protein in Cystic Fibrosis. Front Pharmacol 2020; 11:1098. [PMID: 32765284 PMCID: PMC7379883 DOI: 10.3389/fphar.2020.01098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 07/06/2020] [Indexed: 12/15/2022] Open
Abstract
In people with cystic fibrosis (PWCF), inflammation with concurrent infection occurs from a young age and significantly influences lung disease progression. Studies indicate that neutrophils are important effector cells in the pathogenesis of CF and in the development of anti-neutrophil cytoplasmic autoantibodies (ANCA). ANCA specific for bactericidal permeability increasing protein (BPI-ANCA) are detected in people with CF, and correlate with infection with Pseudomonas aeruginosa. The aim of this study was to determine the signaling mechanism leading to increased BPI release by CF neutrophils, while identifying IgG class BPI-ANCA in CF airways samples as the cause for impaired antimicrobial activity of BPI against P. aeruginosa. Plasma and/or bronchoalveolar lavage fluid (BAL) was collected from PWCF (n = 40), CF receiving ivacaftor therapy (n = 10), non-CF patient cohorts (n = 7) and healthy controls (n = 38). Plasma and BAL BPI and BPI-ANCA were measured by ELISA and GTP-bound Rac2 detected using an in vitro assay. The antibacterial effect of all treatments tested was determined by colony forming units enumeration. Levels of BPI are significantly increased in plasma (p = 0.007) and BALF (p < 0.0001) of PWCF. The signaling mechanism leading to increased degranulation and exocytosis of BPI by CF neutrophils (p = 0.02) involved enhancement of Rac2 GTP-loading (p = 0.03). The full-length BPI protein was detectable in all CF BAL samples and patients displayed ANCA with BPI specificity. IgG class autoantibodies were purified from CF BAL complexed to BPI (n=5), with IgG autoantibody cross-linking of antigen preventing BPI induced P. aeruginosa killing (p < 0.0001). Results indicate that the immune-mediated diminished antimicrobial defense, attributed to anti-BPI-IgG, necessitates the formation of a drug/immune complex intermediate that can maintain cytotoxic effects of BPI towards Gram-negative pathogens, with the potential to transform the current treatment of CF airways disease.
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Affiliation(s)
- Karen McQuillan
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Fatma Gargoum
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Mark P Murphy
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Oliver J McElvaney
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Noel G McElvaney
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Emer P Reeves
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
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Luu GT, Condren AR, Kahl LJ, Dietrich LE, Sanchez LM. Evaluation of Data Analysis Platforms and Compatibility with MALDI-TOF Imaging Mass Spectrometry Data Sets. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2020; 31:1313-1320. [PMID: 32329613 PMCID: PMC7275808 DOI: 10.1021/jasms.0c00039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Imaging mass spectrometry (IMS) has proven to be a useful tool when investigating the spatial distributions of metabolites and proteins in a biological system. One of the biggest advantages of IMS is the ability to maintain the 3D chemical composition of a sample and analyze it in a label-free manner. However, acquiring the spatial information leads to an increase in data size. Due to the increased availability of commercial mass spectrometers capable of IMS, there has been an exciting development of different statistical tools that can help decipher the spatial relevance of an analyte in a biological sample. To address this need, software packages like SCiLS and the open source R package Cardinal have been designed to perform unbiased spectral grouping based on the similarity of spectra in an IMS data set. In this note, we evaluate SCiLS and Cardinal compatibility with MALDI-TOF IMS data sets of the Gram-negative pathogen Pseudomonas aeruginosa PA14. Both software were able to perform unsupervised segmentation with similar performance. There were a few notable differences which are discussed related to the identification of statistically significant features which required optimization of preprocessing steps, region of interest, and manual analysis.
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Affiliation(s)
- Gordon T. Luu
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL 60612
| | - Alanna R. Condren
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL 60612
| | - Lisa Juliane Kahl
- Department of Biological Sciences, Columbia University, New York, NY 10027
| | - Lars E.P. Dietrich
- Department of Biological Sciences, Columbia University, New York, NY 10027
| | - Laura M. Sanchez
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL 60612
- Corresponding Author,
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Vilaplana L, Marco MP. Phenazines as potential biomarkers of Pseudomonas aeruginosa infections: synthesis regulation, pathogenesis and analytical methods for their detection. Anal Bioanal Chem 2020; 412:5897-5912. [PMID: 32462363 DOI: 10.1007/s00216-020-02696-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 04/22/2020] [Accepted: 05/04/2020] [Indexed: 10/24/2022]
Abstract
Infectious diseases are still a worldwide important problem. This fact has led to the characterization of new biomarkers that would allow an early, fast and reliable diagnostic and targeted therapy. In this context, Pseudomonas aeruginosa can be considered one of the most threatening pathogens since it causes a wide range of infections, mainly in patients that suffer other diseases. Antibiotic treatment is not trivial given the incidence of resistance processes and the fewer new antibiotics that are placed on the market. With this scenario, relevant quorum sensing (QS) molecules that regulate the secretion of virulence factors and biofilm formation can play an important role in diagnostic and therapeutic issues. In this review, we have focused our attention on phenazines, as possible new biomarkers. They are pigmented metabolites that are produced by diverse bacteria, characterized for presenting unique redox properties. Phenazines are involved in virulence, competitive fitness and are an essential component of the bacterial QS system. Here we describe their role in bacterial pathogenesis and we revise phenazine production regulation systems. We also discuss phenazine levels previously reported in bacterial isolates and in clinical samples to evaluate them as putative good candidates to be used as P. aeruginosa infection biomarkers. Moreover we deeply go through all analytical techniques that have been used for their detection and also new approaches are discussed from a critical point. Graphical abstract.
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Affiliation(s)
- Lluïsa Vilaplana
- Nanobiotechnology for Diagnostics (Nb4D), Institute of Advanced Chemistry of Catalonia, IQAC-CSIC, Jordi Girona, 18-26, 08034, Barcelona, Spain. .,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Jordi Girona, 18-26, 08034, Barcelona, Spain.
| | - M-Pilar Marco
- Nanobiotechnology for Diagnostics (Nb4D), Institute of Advanced Chemistry of Catalonia, IQAC-CSIC, Jordi Girona, 18-26, 08034, Barcelona, Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Jordi Girona, 18-26, 08034, Barcelona, Spain
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49
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Tahrioui A, Ortiz S, Azuama OC, Bouffartigues E, Benalia N, Tortuel D, Maillot O, Chemat S, Kritsanida M, Feuilloley M, Orange N, Michel S, Lesouhaitier O, Cornelis P, Grougnet R, Boutefnouchet S, Chevalier S. Membrane-Interactive Compounds From Pistacia lentiscus L. Thwart Pseudomonas aeruginosa Virulence. Front Microbiol 2020; 11:1068. [PMID: 32528451 PMCID: PMC7264755 DOI: 10.3389/fmicb.2020.01068] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 04/29/2020] [Indexed: 12/22/2022] Open
Abstract
Pseudomonas aeruginosa is capable to deploy a collection of virulence factors that are not only essential for host infection and persistence, but also to escape from the host immune system and to become more resistant to drug therapies. Thus, developing anti-virulence agents that may directly counteract with specific virulence factors or disturb higher regulatory pathways controlling the production of virulence armories are urgently needed. In this regard, this study reports that Pistacia lentiscus L. fruit cyclohexane extract (PLFE1) thwarts P. aeruginosa virulence by targeting mainly the pyocyanin pigment production by interfering with 4-hydroxy-2-alkylquinolines molecules production. Importantly, the anti-virulence activity of PLFE1 appears to be associated with membrane homeostasis alteration through the modulation of SigX, an extracytoplasmic function sigma factor involved in cell wall stress response. A thorough chemical analysis of PLFE1 allowed us to identify the ginkgolic acid (C17:1) and hydroginkgolic acid (C15:0) as the main bioactive membrane-interactive compounds responsible for the observed increased membrane stiffness and anti-virulence activity against P. aeruginosa. This study delivers a promising perspective for the potential future use of PLFE1 or ginkgolic acid molecules as an adjuvant therapy to fight against P. aeruginosa infections.
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Affiliation(s)
- Ali Tahrioui
- Laboratoire de Microbiologie Signaux et Microenvironnement, LMSM EA4312, Université de Rouen Normandie, Normandie Université, Évreux, France
| | - Sergio Ortiz
- CiTCoM UMR 8038 CNRS, Faculté des Sciences Pharmaceutiques et Biologiques, Équipe Produits Naturels, Analyses et Synthèses (PNAS), Université Paris Descartes, Paris, France
| | - Onyedikachi Cecil Azuama
- Laboratoire de Microbiologie Signaux et Microenvironnement, LMSM EA4312, Université de Rouen Normandie, Normandie Université, Évreux, France
| | - Emeline Bouffartigues
- Laboratoire de Microbiologie Signaux et Microenvironnement, LMSM EA4312, Université de Rouen Normandie, Normandie Université, Évreux, France
| | - Nabiha Benalia
- CiTCoM UMR 8038 CNRS, Faculté des Sciences Pharmaceutiques et Biologiques, Équipe Produits Naturels, Analyses et Synthèses (PNAS), Université Paris Descartes, Paris, France
| | - Damien Tortuel
- Laboratoire de Microbiologie Signaux et Microenvironnement, LMSM EA4312, Université de Rouen Normandie, Normandie Université, Évreux, France
| | - Olivier Maillot
- Laboratoire de Microbiologie Signaux et Microenvironnement, LMSM EA4312, Université de Rouen Normandie, Normandie Université, Évreux, France
| | - Smain Chemat
- Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques, CRAPC, Bou Ismaïl, Algeria
| | - Marina Kritsanida
- CiTCoM UMR 8038 CNRS, Faculté des Sciences Pharmaceutiques et Biologiques, Équipe Produits Naturels, Analyses et Synthèses (PNAS), Université Paris Descartes, Paris, France
| | - Marc Feuilloley
- Laboratoire de Microbiologie Signaux et Microenvironnement, LMSM EA4312, Université de Rouen Normandie, Normandie Université, Évreux, France
| | - Nicole Orange
- Laboratoire de Microbiologie Signaux et Microenvironnement, LMSM EA4312, Université de Rouen Normandie, Normandie Université, Évreux, France
| | - Sylvie Michel
- CiTCoM UMR 8038 CNRS, Faculté des Sciences Pharmaceutiques et Biologiques, Équipe Produits Naturels, Analyses et Synthèses (PNAS), Université Paris Descartes, Paris, France
| | - Olivier Lesouhaitier
- Laboratoire de Microbiologie Signaux et Microenvironnement, LMSM EA4312, Université de Rouen Normandie, Normandie Université, Évreux, France
| | - Pierre Cornelis
- Laboratoire de Microbiologie Signaux et Microenvironnement, LMSM EA4312, Université de Rouen Normandie, Normandie Université, Évreux, France
| | - Raphaël Grougnet
- CiTCoM UMR 8038 CNRS, Faculté des Sciences Pharmaceutiques et Biologiques, Équipe Produits Naturels, Analyses et Synthèses (PNAS), Université Paris Descartes, Paris, France
| | - Sabrina Boutefnouchet
- CiTCoM UMR 8038 CNRS, Faculté des Sciences Pharmaceutiques et Biologiques, Équipe Produits Naturels, Analyses et Synthèses (PNAS), Université Paris Descartes, Paris, France
| | - Sylvie Chevalier
- Laboratoire de Microbiologie Signaux et Microenvironnement, LMSM EA4312, Université de Rouen Normandie, Normandie Université, Évreux, France
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Gerner E, Almqvist S, Werthén M, Trobos M. Sodium salicylate interferes with quorum-sensing-regulated virulence in chronic wound isolates of Pseudomonas aeruginosa in simulated wound fluid. J Med Microbiol 2020; 69:767-780. [PMID: 32320374 PMCID: PMC7451038 DOI: 10.1099/jmm.0.001188] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Introduction. An important factor for delayed healing of chronic wounds is the presence of bacteria. Quorum sensing (QS), a cell density-dependent signalling system, controls the production of many virulence factors and biofilm formation in Pseudomonas aeruginosa.Aim. Inhibition by sodium salicylate (NaSa) of QS-regulated virulence expression was evaluated in QS-characterized clinical wound isolates of P. aeruginosa, cultured in serum-containing medium.Methodology. Fourteen clinical P. aeruginosa strains from chronic wounds were evaluated for the production of QS signals and virulence factors. Inhibition of QS by NaSa in P. aeruginosa clinical strains, wild-type PAO1 and QS reporter strains was evaluated using in vitro assays for the production of biofilm, pyocyanin, siderophores, alkaline protease, elastase and stapholytic protease.Results. Six clinical strains secreted several QS-associated virulence factors and signal molecules and two were negative for all factors. Sub-inhibitory concentrations of NaSa downregulated the expression of the QS-related genes lasB, rhlA and pqsA and reduced the secretion of several virulence factors in PAO1 and clinical strains cultured in serum. Compared to serum-free media, the presence of serum increased the expression of QS genes and production of siderophores and pyocyanin but decreased biofilm formation.Conclusions. Pseudomonas aeruginosa from chronic wound infections showed different virulence properties. While very few strains showed no QS activity, approximately half were highly virulent and produced QS signals, suggesting that the targeting of QS is a viable and relevant strategy for infection control. NaSa showed activity as a QS-inhibitor by lowering the virulence phenotypes and QS signals at both transcriptional and extracellular levels.
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Affiliation(s)
- Erik Gerner
- Department of Biomaterials, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.,Mölnlycke Health Care AB, Gothenburg, Sweden.,Center for Antibiotic Resistance Research (CARe) at University of Gothenburg, Gothenburg, Sweden
| | | | - Maria Werthén
- Department of Biomaterials, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.,Center for Antibiotic Resistance Research (CARe) at University of Gothenburg, Gothenburg, Sweden.,Department of Health Sciences, University West, Trollhättan, Sweden
| | - Margarita Trobos
- Department of Biomaterials, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.,Center for Antibiotic Resistance Research (CARe) at University of Gothenburg, Gothenburg, Sweden
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