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David A, Tahrioui A, Duchesne R, Tareau AS, Maillot O, Barreau M, Feuilloley MGJ, Lesouhaitier O, Cornelis P, Bouffartigues E, Chevalier S. Membrane fluidity homeostasis is required for tobramycin-enhanced biofilm in Pseudomonas aeruginosa. Microbiol Spectr 2024; 12:e0230323. [PMID: 38411953 PMCID: PMC10986583 DOI: 10.1128/spectrum.02303-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 02/04/2024] [Indexed: 02/28/2024] Open
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen, which causes chronic infections, especially in cystic fibrosis (CF) patients where it colonizes the lungs via the build-up of biofilms. Tobramycin, an aminoglycoside, is often used to treat P. aeruginosa infections in CF patients. Tobramycin at sub-minimal inhibitory concentrations enhances both biofilm biomass and thickness in vitro; however, the mechanism(s) involved are still unknown. Herein, we show that tobramycin increases the expression and activity of SigX, an extracytoplasmic sigma factor known to be involved in the biosynthesis of membrane lipids and membrane fluidity homeostasis. The biofilm enhancement by tobramycin is not observed in a sigX mutant, and the sigX mutant displays increased membrane stiffness. Remarkably, the addition of polysorbate 80 increases membrane fluidity of sigX-mutant cells in biofilm, restoring the tobramycin-enhanced biofilm formation. Our results suggest the involvement of membrane fluidity homeostasis in biofilm development upon tobramycin exposure.IMPORTANCEPrevious studies have shown that sub-lethal concentrations of tobramycin led to an increase biofilm formation in the case of infections with the opportunistic pathogen Pseudomonas aeruginosa. We show that the mechanism involved in this phenotype relies on the cell envelope stress response, triggered by the extracytoplasmic sigma factor SigX. This phenotype was abolished in a sigX-mutant strain. Remarkably, we show that increasing the membrane fluidity of the mutant strain is sufficient to restore the effect of tobramycin. Altogether, our data suggest the involvement of membrane fluidity homeostasis in biofilm development upon tobramycin exposure.
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Affiliation(s)
- Audrey David
- Unité de recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, Université de Rouen Normandie, Normandie Université, Evreux, France
- Fédération de Recherche Normande Sécurité Sanitaire, bien être, Aliment Durable (SéSAD), Evreux, France
| | - Ali Tahrioui
- Unité de recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, Université de Rouen Normandie, Normandie Université, Evreux, France
- Fédération de Recherche Normande Sécurité Sanitaire, bien être, Aliment Durable (SéSAD), Evreux, France
| | - Rachel Duchesne
- Unité de recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, Université de Rouen Normandie, Normandie Université, Evreux, France
- Fédération de Recherche Normande Sécurité Sanitaire, bien être, Aliment Durable (SéSAD), Evreux, France
| | - Anne-Sophie Tareau
- Unité de recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, Université de Rouen Normandie, Normandie Université, Evreux, France
- Fédération de Recherche Normande Sécurité Sanitaire, bien être, Aliment Durable (SéSAD), Evreux, France
| | - Olivier Maillot
- Unité de recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, Université de Rouen Normandie, Normandie Université, Evreux, France
- Fédération de Recherche Normande Sécurité Sanitaire, bien être, Aliment Durable (SéSAD), Evreux, France
| | - Magalie Barreau
- Unité de recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, Université de Rouen Normandie, Normandie Université, Evreux, France
- Fédération de Recherche Normande Sécurité Sanitaire, bien être, Aliment Durable (SéSAD), Evreux, France
| | - Marc G. J. Feuilloley
- Unité de recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, Université de Rouen Normandie, Normandie Université, Evreux, France
- Fédération de Recherche Normande Sécurité Sanitaire, bien être, Aliment Durable (SéSAD), Evreux, France
| | - Olivier Lesouhaitier
- Unité de recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, Université de Rouen Normandie, Normandie Université, Evreux, France
- Fédération de Recherche Normande Sécurité Sanitaire, bien être, Aliment Durable (SéSAD), Evreux, France
| | - Pierre Cornelis
- Unité de recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, Université de Rouen Normandie, Normandie Université, Evreux, France
- Fédération de Recherche Normande Sécurité Sanitaire, bien être, Aliment Durable (SéSAD), Evreux, France
| | - Emeline Bouffartigues
- Unité de recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, Université de Rouen Normandie, Normandie Université, Evreux, France
- Fédération de Recherche Normande Sécurité Sanitaire, bien être, Aliment Durable (SéSAD), Evreux, France
| | - Sylvie Chevalier
- Unité de recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, Université de Rouen Normandie, Normandie Université, Evreux, France
- Fédération de Recherche Normande Sécurité Sanitaire, bien être, Aliment Durable (SéSAD), Evreux, France
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Cornelis P, Dingemans J, Baysse C. Pseudomonas aeruginosa Soluble Pyocins as Antibacterial Weapons. Methods Mol Biol 2024; 2721:125-136. [PMID: 37819519 DOI: 10.1007/978-1-0716-3473-8_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen causing nosocomial infections and associated with lung infections in cystic fibrosis (CF) patients (Lyczak et al., Microbes Infect 2:1051-1060, 2000). Multiple drug-resistant P. aeruginosa strains pose a serious problem because of antibiotic treatment failure. There is therefore a need for alternative anti-Pseudomonas molecules. Soluble pyocins (S-pyocins) are bacteriocins produced by P. aeruginosa strains that kill sensitive strains of the same species. These bacteriocins and their immunity gene are easily cloned and expressed in E. coli and their activity spectrum against different P. aeruginosa strains can be tested. In this chapter, we describe the procedures for cloning, expression, and sensitivity testing of two different S-pyocins. We also describe how to identify their receptor binding domain in sensitive strains, how to construct chimeric pyocins with extended activity spectra, and how to identify new pyocins in genomes by multiplex PCR.
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Affiliation(s)
- Pierre Cornelis
- Vrije Universiteit Brussel, Microbiology Group, Brussels, Belgium.
| | - Jozef Dingemans
- Vrije Universiteit Brussel, Microbiology Group, Brussels, Belgium
| | - Christine Baysse
- Institut de Génétique et de Développement de Rennes (IGDR), CNRS UMR 6290, Université de Rennes, Rennes, France
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Louis M, Tahrioui A, Tremlett CJ, Clamens T, Leprince J, Lefranc B, Kipnis E, Grandjean T, Bouffartigues E, Barreau M, Defontaine F, Cornelis P, Feuilloley MG, Harmer NJ, Chevalier S, Lesouhaitier O. The natriuretic peptide receptor agonist osteocrin disperses Pseudomonas aeruginosa biofilm. Biofilm 2023; 5:100131. [PMID: 37252226 PMCID: PMC10220261 DOI: 10.1016/j.bioflm.2023.100131] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 05/02/2023] [Accepted: 05/18/2023] [Indexed: 05/31/2023] Open
Abstract
Biofilms are highly tolerant to antimicrobials and host immune defense, enabling pathogens to thrive in hostile environments. The diversity of microbial biofilm infections requires alternative and complex treatment strategies. In a previous work we demonstrated that the human Atrial Natriuretic Peptide (hANP) displays a strong anti-biofilm activity toward Pseudomonas aeruginosa and that the binding of hANP by the AmiC protein supports this effect. This AmiC sensor has been identified as an analog of the human natriuretic peptide receptor subtype C (h-NPRC). In the present study, we evaluated the anti-biofilm activity of the h-NPRC agonist, osteocrin (OSTN), a hormone that displays a strong affinity for the AmiC sensor at least in vitro. Using molecular docking, we identified a pocket in the AmiC sensor that OSTN reproducibly docks into, suggesting that OSTN might possess an anti-biofilm activity as well as hANP. This hypothesis was validated since we observed that OSTN dispersed established biofilm of P. aeruginosa PA14 strain at the same concentrations as hANP. However, the OSTN dispersal effect is less marked than that observed for the hANP (-61% versus -73%). We demonstrated that the co-exposure of P. aeruginosa preformed biofilm to hANP and OSTN induced a biofilm dispersion with a similar effect to that observed with hANP alone suggesting a similar mechanism of action of these two peptides. This was confirmed by the observation that OSTN anti-biofilm activity requires the activation of the complex composed by the sensor AmiC and the regulator AmiR of the ami pathway. Using a panel of both P. aeruginosa laboratory reference strains and clinical isolates, we observed that the OSTN capacity to disperse established biofilms is highly variable from one strain to another. Taken together, these results show that similarly to the hANP hormone, OSTN has a strong potential to be used as a tool to disperse P. aeruginosa biofilms.
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Affiliation(s)
- Melissande Louis
- Univ Rouen Normandie, Unité de Recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, 27000, Evreux, France
| | - Ali Tahrioui
- Univ Rouen Normandie, Unité de Recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, 27000, Evreux, France
| | - Courtney J. Tremlett
- Living Systems Institute, Stocker Road, University of Exeter, Exeter, EX4 4QD, UK
| | - Thomas Clamens
- Univ Rouen Normandie, Unité de Recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, 27000, Evreux, France
| | - Jérôme Leprince
- PRIMACEN, University of Rouen Normandy, 76821, Mont-Saint-Aignan, France
| | - Benjamin Lefranc
- PRIMACEN, University of Rouen Normandy, 76821, Mont-Saint-Aignan, France
| | - Eric Kipnis
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR9017-CIIL-Centre d'Infection et d'Immunité de Lille, University Lille, F-59000, Lille, France
| | - Teddy Grandjean
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR9017-CIIL-Centre d'Infection et d'Immunité de Lille, University Lille, F-59000, Lille, France
| | - Emeline Bouffartigues
- Univ Rouen Normandie, Unité de Recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, 27000, Evreux, France
| | - Magalie Barreau
- Univ Rouen Normandie, Unité de Recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, 27000, Evreux, France
| | - Florian Defontaine
- Univ Rouen Normandie, Unité de Recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, 27000, Evreux, France
| | - Pierre Cornelis
- Univ Rouen Normandie, Unité de Recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, 27000, Evreux, France
| | - Marc G.J. Feuilloley
- Univ Rouen Normandie, Unité de Recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, 27000, Evreux, France
| | - Nicholas J. Harmer
- Living Systems Institute, Stocker Road, University of Exeter, Exeter, EX4 4QD, UK
| | - Sylvie Chevalier
- Univ Rouen Normandie, Unité de Recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, 27000, Evreux, France
| | - Olivier Lesouhaitier
- Univ Rouen Normandie, Unité de Recherche Communication Bactérienne et Stratégies Anti-infectieuses, CBSA UR4312, 27000, Evreux, France
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Cornelis P, Barton LL. A tribute to Prof. Dr. Günther Winkelmann. Biometals 2023; 36:239. [PMID: 37027062 DOI: 10.1007/s10534-023-00490-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Affiliation(s)
- Pierre Cornelis
- Microbiology Lab, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium.
| | - Larry Lumir Barton
- Department of Biology, University of New Mexico, MSCO3 2020, Albuquerque, NM, 87131, USA
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Cornelis P, Tahrioui A, Lesouhaitier O, Bouffartigues E, Feuilloley M, Baysse C, Chevalier S. High affinity iron uptake by pyoverdine in Pseudomonas aeruginosa involves multiple regulators besides Fur, PvdS, and FpvI. Biometals 2023; 36:255-261. [PMID: 35171432 DOI: 10.1007/s10534-022-00369-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 02/03/2022] [Indexed: 11/02/2022]
Abstract
Pseudomonas aeruginosa is a Gram-negative bacterium which can cause serious infections among immune-depressed people including cystic fibrosis patients where it can colonize the lungs causing chronic infections. Iron is essential for P. aeruginosa and can be provided via three sources under aerobic conditions: its own siderophores pyochelin (PCH) and pyoverdine (PVD), xenosiderophores, or heme, respectively. Pyoverdine is the high affinity siderophore and its synthesis and uptake involve more than 30 genes organized in different operons. Its synthesis and uptake are triggered by iron scarcity via the Fur regulator and involves two extra cytoplasmic sigma factors (ECF), PvdS for the biosynthesis of PVD and FpvI for the uptake via the TonB-dependent FpvA outer membrane transporter and other periplasmic and inner membrane proteins. It appeared recently that the regulation of PVD biosynthesis and uptake involves other regulators, including other ECF factors, and LysR regulators. This is the case especially for the genes coding for periplasmic and inner membrane proteins involved in the reduction of Fe3+ to Fe2+ and the transport of ferrous iron to the cytoplasm that appears to represent a crucial step in the uptake process.
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Affiliation(s)
- Pierre Cornelis
- Laboratory of Microbiology Signals and Microenvironnements (LMSM) EA 4312, University of Rouen Normandy, 27000, Evreux, France.
- Laboratorium Microbiologie, Vrije Universiteit Brussel, Brussels, Belgium.
| | - Ali Tahrioui
- Laboratory of Microbiology Signals and Microenvironnements (LMSM) EA 4312, University of Rouen Normandy, 27000, Evreux, France
| | - Olivier Lesouhaitier
- Laboratory of Microbiology Signals and Microenvironnements (LMSM) EA 4312, University of Rouen Normandy, 27000, Evreux, France
| | - Emeline Bouffartigues
- Laboratory of Microbiology Signals and Microenvironnements (LMSM) EA 4312, University of Rouen Normandy, 27000, Evreux, France
| | - Marc Feuilloley
- Laboratory of Microbiology Signals and Microenvironnements (LMSM) EA 4312, University of Rouen Normandy, 27000, Evreux, France
| | - Christine Baysse
- CNRS, Institut de Génétique et de Développement de Rennes (IGDR), UMR6290, Université de Rennes, Rennes, France
| | - Sylvie Chevalier
- Laboratory of Microbiology Signals and Microenvironnements (LMSM) EA 4312, University of Rouen Normandy, 27000, Evreux, France
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Cui K, Yang W, Liu Z, Liu G, Li D, Sun Y, He G, Ma S, Cao Y, Jiang X, Chevalier S, Cornelis P, Wei Q, Wang Y. Chenodeoxycholic Acid-Amikacin Combination Enhances Eradication of Staphylococcus aureus. Microbiol Spectr 2023; 11:e0243022. [PMID: 36625660 PMCID: PMC9927322 DOI: 10.1128/spectrum.02430-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 12/07/2022] [Indexed: 01/11/2023] Open
Abstract
The rise of antibiotic resistance and dearth of novel antibiotics have posed a serious health crisis worldwide. In this study, we screened a combination of antibiotics and nonantibiotics providing a viable strategy to solve this issue by broadening the antimicrobial spectrum. We found that chenodeoxycholic acid (CDCA), a cholic acid derivative of the traditional Chinese medicine (TCM) Tanreqing (TRQ), synergizes with amikacin against Staphylococcus aureus in vitro, and this synergistic killing was effective against diverse methicillin-resistant S. aureus (MRSA) variants, including small-colony variants (SCVs), biofilm strains, and persisters. The CDCA-amikacin combination protects a mouse model from S. aureus infections. Mechanistically, CDCA increases the uptake of aminoglycosides in a proton motive force-dependent manner by dissipating the chemical potential and potentiates reactive oxygen species (ROS) generation by inhibiting superoxide dismutase activity. This work highlights the potential use of TCM components in treating S. aureus-associated infections and extend the use of aminoglycosides in eradicating Gram-positive pathogens. IMPORTANCE Multidrug resistance (MDR) is spreading globally with increasing speed. The search for new antibiotics is one of the key strategies in the fight against MDR. Antibiotic resistance breakers that may or may not have direct antibacterial action and can either be coadministered or conjugated with other antibiotics are being studied. To better expand the antibacterial spectrum of certain antibiotics, we identified one component from a traditional Chinese medicine, Tanreqing (TRQ), that increased the activity of aminoglycosides. We found that this so-called agent, chenodeoxycholic acid (CDCA), sensitizes Staphylococcus aureus to aminoglycoside killing and protects a mouse model from S. aureus infections. CDCA increases the uptake of aminoglycosides in a proton motive force-dependent manner by dissipating the chemical potential and potentiates ROS generation by inhibiting superoxide dismutase activity in S. aureus. Our work highlights the potential use of TCM or its effective components, such as CDCA, in treating antibiotic resistance-associated infections.
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Affiliation(s)
- Kaiyu Cui
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
| | - Weifeng Yang
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zhiyuan Liu
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Guijian Liu
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Dongying Li
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yanan Sun
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
| | - Gaiying He
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
| | - Shuhua Ma
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yu Cao
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xuefan Jiang
- Beijing University of Chinese Medicine, Beijing, China
| | - Sylvie Chevalier
- Normandy University, University of Rouen Normandy, Laboratory of Microbiology Signals and Microenvironment, Evreux, France
| | - Pierre Cornelis
- Normandy University, University of Rouen Normandy, Laboratory of Microbiology Signals and Microenvironment, Evreux, France
| | - Qing Wei
- Nanchang Institute of Technology, Nanchang, Jiangxi, China
| | - Yi Wang
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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8
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Louis M, Clamens T, Tahrioui A, Desriac F, Rodrigues S, Rosay T, Harmer N, Diaz S, Barreau M, Racine P, Kipnis E, Grandjean T, Vieillard J, Bouffartigues E, Cornelis P, Chevalier S, Feuilloley MGJ, Lesouhaitier O. Pseudomonas aeruginosa Biofilm Dispersion by the Human Atrial Natriuretic Peptide. Adv Sci (Weinh) 2022; 9:e2103262. [PMID: 35032112 PMCID: PMC8895129 DOI: 10.1002/advs.202103262] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 11/29/2021] [Indexed: 05/05/2023]
Abstract
Pseudomonas aeruginosa biofilms cause chronic, antibiotic tolerant infections in wounds and lungs. Numerous recent studies demonstrate that bacteria can detect human communication compounds through specific sensor/receptor tools that modulate bacterial physiology. Consequently, interfering with these mechanisms offers an exciting opportunity to directly affect the infection process. It is shown that the human hormone Atrial Natriuretic Peptide (hANP) both prevents the formation of P. aeruginosa biofilms and strongly disperses established P. aeruginosa biofilms. This hANP action is dose-dependent with a strong effect at low nanomolar concentrations and takes effect in 30-120 min. Furthermore, although hANP has no antimicrobial effect, it acts as an antibiotic adjuvant. hANP enhances the antibiofilm action of antibiotics with diverse modes of action, allowing almost full biofilm eradication. The hANP effect requires the presence of the P. aeruginosa sensor AmiC and the AmiR antiterminator regulator, indicating a specific mode of action. These data establish the activation of the ami pathway as a potential mechanism for P. aeruginosa biofilm dispersion. hANP appears to be devoid of toxicity, does not enhance bacterial pathogenicity, and acts synergistically with antibiotics. These data show that hANP is a promising powerful antibiofilm weapon against established P. aeruginosa biofilms in chronic infections.
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Affiliation(s)
- Mélissande Louis
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312University of Rouen NormandyEvreux27000France
| | - Thomas Clamens
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312University of Rouen NormandyEvreux27000France
| | - Ali Tahrioui
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312University of Rouen NormandyEvreux27000France
| | - Florie Desriac
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312University of Rouen NormandyEvreux27000France
- Normandie UnivUNICAENUnité De Recherche Risques Microbiens U2RMCaen14000France
| | - Sophie Rodrigues
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312University of Rouen NormandyEvreux27000France
| | - Thibaut Rosay
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312University of Rouen NormandyEvreux27000France
| | | | - Suraya Diaz
- School of BiosciencesUniversity of ExeterExeterEX4 4QDUK
| | - Magalie Barreau
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312University of Rouen NormandyEvreux27000France
| | - Pierre‐Jean Racine
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312University of Rouen NormandyEvreux27000France
| | - Eric Kipnis
- Univ. LilleCNRSInserm, CHU LilleInstitut Pasteur de LilleU1019‐UMR9017‐CIIL‐Centre d’Infection et d’Immunité de Lille, Lille, FranceUniversity LilleLilleF‐59000France
| | - Teddy Grandjean
- Univ. LilleCNRSInserm, CHU LilleInstitut Pasteur de LilleU1019‐UMR9017‐CIIL‐Centre d’Infection et d’Immunité de Lille, Lille, FranceUniversity LilleLilleF‐59000France
| | - Julien Vieillard
- Normandie UnivUNIROUENINSA RouenCNRSCOBRA (UMR 6014)Evreux27000France
| | - Emeline Bouffartigues
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312University of Rouen NormandyEvreux27000France
| | - Pierre Cornelis
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312University of Rouen NormandyEvreux27000France
| | - Sylvie Chevalier
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312University of Rouen NormandyEvreux27000France
| | - Marc G. J. Feuilloley
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312University of Rouen NormandyEvreux27000France
| | - Olivier Lesouhaitier
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312University of Rouen NormandyEvreux27000France
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9
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Yang W, Wei Q, Tong Q, Cui K, He G, Lin L, Ma LZ, Cornelis P, Wang Y. Traditional Chinese Medicine Tanreqing Inhibits Quorum Sensing Systems in Pseudomonas aeruginosa. Front Microbiol 2020; 11:517462. [PMID: 33391189 PMCID: PMC7775676 DOI: 10.3389/fmicb.2020.517462] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 11/09/2020] [Indexed: 12/19/2022] Open
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen that can infect a wide variety of hosts including humans, plants, and animals. The production of virulence factors is the determinant of the infection paradigm and is under orchestrated regulation via cell-to-cell communication process called quorum sensing (QS). To disable QS circuits and prevent bacterial infections, a large battery of anti-QS agents, particularly from traditional Chinese medicine have been developed. Here, we used P. aeruginosa as a model microorganism to investigate the effect of traditional Chinese medicine Tanreqing (TRQ) formula on bacterial pathogenicity. Phenotypic analysis showed that TRQ treatment could completely inhibit the production of phenazine pyocyanin and moderately inhibit the production of virulence factors such as rhamnolipids, elastase, and alkaline protease. Further transcriptomic analyses revealed that TRQ treatment could significantly attenuate the expression of QS-regulated genes in P. aeruginosa and TRQ-treated P. aeruginosa regulon shared a large overlap with QS regulon. Component contribution to QS inhibition shed light on the indispensable role of all five components in TRQ formula. Further genetic analysis indicated that upstream regulators of QS systems, including two-component systems GacS/GacA and PprA/PprB, were both inhibited by TRQ treatment. Finally, our TRQ formula could efficiently protect Caenorhabditis elegans from killing by P. aeruginosa. Altogether, we have proved TRQ formula as an effective and specific agent to attenuate bacterial virulence and combat bacterial infections.
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Affiliation(s)
- Weifeng Yang
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
| | - Qing Wei
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland.,State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Qian Tong
- School of Biological Engineering and Food Science, Hubei University of Technology, Wuhan, China
| | - Kaiyu Cui
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
| | - Gaiying He
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
| | - Longfei Lin
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Lvyan Z Ma
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Pierre Cornelis
- Department of Bioengineering Sciences, Microbiology Unit, Vrije Universiteit Brussel, Brussels, Belgium.,Université de Rouen Normandie, Normandie Université, Laboratoire de Microbiologie Signaux et Microenvironnement, LMSM EA4312, Évreux, France
| | - Yi Wang
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
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10
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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11
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Bouffartigues E, Si Hadj Mohand I, Maillot O, Tortuel D, Omnes J, David A, Tahrioui A, Duchesne R, Azuama CO, Nusser M, Brenner-Weiss G, Bazire A, Connil N, Orange N, Feuilloley MGJ, Lesouhaitier O, Dufour A, Cornelis P, Chevalier S. The Temperature-Regulation of Pseudomonas aeruginosa cmaX-cfrX-cmpX Operon Reveals an Intriguing Molecular Network Involving the Sigma Factors AlgU and SigX. Front Microbiol 2020; 11:579495. [PMID: 33193206 PMCID: PMC7641640 DOI: 10.3389/fmicb.2020.579495] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 09/23/2020] [Indexed: 11/13/2022] Open
Abstract
Pseudomonas aeruginosa is a highly adaptable Gram-negative opportunistic pathogen, notably due to its large number of transcription regulators. The extracytoplasmic sigma factor (ECFσ) AlgU, responsible for alginate biosynthesis, is also involved in responses to cell wall stress and heat shock via the RpoH alternative σ factor. The SigX ECFσ emerged as a major regulator involved in the envelope stress response via membrane remodeling, virulence and biofilm formation. However, their functional interactions to coordinate the envelope homeostasis in response to environmental variations remain to be determined. The regulation of the putative cmaX-cfrX-cmpX operon located directly upstream sigX was investigated by applying sudden temperature shifts from 37°C. We identified a SigX- and an AlgU- dependent promoter region upstream of cfrX and cmaX, respectively. We show that cmaX expression is increased upon heat shock through an AlgU-dependent but RpoH independent mechanism. In addition, the ECFσ SigX is activated in response to valinomycin, an agent altering the membrane structure, and up-regulates cfrX-cmpX transcription in response to cold shock. Altogether, these data provide new insights into the regulation exerted by SigX and networks that are involved in maintaining envelope homeostasis.
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Affiliation(s)
- Emeline Bouffartigues
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Ishac Si Hadj Mohand
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Olivier Maillot
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Damien Tortuel
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Jordane Omnes
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Audrey David
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Ali Tahrioui
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Rachel Duchesne
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Cecil Onyedikachi Azuama
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Michael Nusser
- Institute of Functional Interfaces, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Gerald Brenner-Weiss
- Institute of Functional Interfaces, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Alexis Bazire
- Laboratoire de Biotechnologie et Chimie Marines (LBCM) EA3884, IUEM, Université de Bretagne-Sud, Lorient, France
| | - Nathalie Connil
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Nicole Orange
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Marc G J Feuilloley
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Olivier Lesouhaitier
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Alain Dufour
- Laboratoire de Biotechnologie et Chimie Marines (LBCM) EA3884, IUEM, Université de Bretagne-Sud, Lorient, France
| | - Pierre Cornelis
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
| | - Sylvie Chevalier
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université, Université de Rouen Normandie, Centre de Sécurité Sanitaire de Normandie, Evreux, France
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12
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Chathoth K, Martin B, Cornelis P, Yvenou S, Bonnaure-Mallet M, Baysse C. The events that may contribute to subgingival dysbiosis: a focus on the interplay between iron, sulfide and oxygen. FEMS Microbiol Lett 2020; 367:5860280. [DOI: 10.1093/femsle/fnaa100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 06/19/2020] [Indexed: 12/21/2022] Open
Abstract
ABSTRACT
This minireview considers the disruption of the host–microbiota harmless symbiosis in the subgingival niche. The establishment of a chronic infection by subversion of a commensal microbiota results from a complex and multiparametric sequence of events. This review narrows down to the interplay between oxygen, iron and sulfide that can result in a vicious cycle that would favor peroxygenic and glutathione producing streptococci as well as sulfidogenic anaerobic pathogens in the subgingival niche. We propose hypothesis and discuss strategies for the therapeutic modulation of the microbiota to prevent periodontitis and promote oral health.
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Affiliation(s)
- Kanchana Chathoth
- NuMeCan INSERM U1241, CIMIAD, Université de Rennes 1, F-35043 Rennes, France
| | - Bénédicte Martin
- NuMeCan INSERM U1241, CIMIAD, Université de Rennes 1, F-35043 Rennes, France
| | - Pierre Cornelis
- Department of Bioengineering Sciences, Laboratory of Microbiology, Vrije Universiteit Brussel, B-1050 Brussels, Belgium
- Laboratoire de Microbiologie Signaux et Microenvironnement, LMSM EA4312, Université de Rouen Normandie, Normandie Université, F-27000 Évreux, France
| | - Stéven Yvenou
- NuMeCan INSERM U1241, CIMIAD, Université de Rennes 1, F-35043 Rennes, France
| | - Martine Bonnaure-Mallet
- NuMeCan INSERM U1241, CIMIAD, Université de Rennes 1, F-35043 Rennes, France
- CHU Pontchaillou Rennes, 35000 Rennes, France
| | - Christine Baysse
- NuMeCan INSERM U1241, CIMIAD, Université de Rennes 1, F-35043 Rennes, France
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13
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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14
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Abstract
Despite published evidence that IQS (2-(2-hydroxylphenyl)-thiazole-4-carbaldehyde) is in fact aeruginaldehyde, a by-product of the siderophore pyochelin biosynthesis or degradation and that the ambABCDE genes are not responsible for IQS synthesis, several authors, including in top review journals, perpetuate the wrong information. I hope that this short comment will clarify the situation once and for all.
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Affiliation(s)
- Pierre Cornelis
- Department of Bioengineering Sciences, Laboratory of Microbiology, Vrije Universiteit Brussel, Brussels, Belgium.,Laboratoire de Microbiologie Signaux et Microenvironnement, Normandie Université, Université de Rouen Normandie, Évreux, France
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15
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Beaton A, Lood C, Cunningham-Oakes E, MacFadyen A, Mullins AJ, Bestawy WE, Botelho J, Chevalier S, Coleman S, Dalzell C, Dolan SK, Faccenda A, Ghequire MGK, Higgins S, Kutschera A, Murray J, Redway M, Salih T, da Silva AC, Smith BA, Smits N, Thomson R, Woodcock S, Welch M, Cornelis P, Lavigne R, van Noort V, Tucker NP. Community-led comparative genomic and phenotypic analysis of the aquaculture pathogen Pseudomonas baetica a390T sequenced by Ion semiconductor and Nanopore technologies. FEMS Microbiol Lett 2019; 365:4951603. [PMID: 29579234 PMCID: PMC5909648 DOI: 10.1093/femsle/fny069] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 03/21/2018] [Indexed: 12/29/2022] Open
Abstract
Pseudomonas baetica strain a390T is the type strain of this recently described species and here we present its high-contiguity draft genome. To celebrate the 16th International Conference on Pseudomonas, the genome of P. baetica strain a390T was sequenced using a unique combination of Ion Torrent semiconductor and Oxford Nanopore methods as part of a collaborative community-led project. The use of high-quality Ion Torrent sequences with long Nanopore reads gave rapid, high-contiguity and -quality, 16-contig genome sequence. Whole genome phylogenetic analysis places P. baetica within the P. koreensis clade of the P. fluorescens group. Comparison of the main genomic features of P. baetica with a variety of other Pseudomonas spp. suggests that it is a highly adaptable organism, typical of the genus. This strain was originally isolated from the liver of a diseased wedge sole fish, and genotypic and phenotypic analyses show that it is tolerant to osmotic stress and to oxytetracycline.
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Affiliation(s)
- Ainsley Beaton
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK
| | - Cédric Lood
- Centre of Microbial and Plant Genetics, KU Leuven, Kasteelpark Arenberg 20, bus 2460, Leuven B-3001, Belgium.,Laboratory of Gene Technology, KU Leuven, Kasteelpark Arenberg 20, bus 2460, Leuven B-3001, Belgium
| | - Edward Cunningham-Oakes
- Cardiff School of Biosciences, Cardiff University, Sir Martin Evans Building, Park Place, Cardiff CF10 3AX, UK
| | - Alison MacFadyen
- Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Campus, Midlothian EH25 9RG, Scotland, UK
| | - Alex J Mullins
- Cardiff School of Biosciences, Cardiff University, Sir Martin Evans Building, Park Place, Cardiff CF10 3AX, UK
| | - Walid El Bestawy
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK
| | - João Botelho
- UCIBIO/REQUIMTE, Laboratório de Microbiologia, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira no. 228 Porto 4050-313, Portugal
| | - Sylvie Chevalier
- Laboratoire Microbiologie Signaux et Microenvironnement (LMSM), Université de Rouen, 55, rue St Germain, Evreux 27000, France
| | - Shannon Coleman
- Lower Mall Research Station, University of British Columbia, 2259 Lower Mall, Vancouver, BC V6T 1Z4, Canada
| | - Chloe Dalzell
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK
| | - Stephen K Dolan
- Department of Biochemistry, University of Cambridge, Hopkins Building, Tennis Court Road, Cambridge CB2 1QW, UK
| | - Alberto Faccenda
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK
| | - Maarten G K Ghequire
- Centre of Microbial and Plant Genetics, KU Leuven, Kasteelpark Arenberg 20, bus 2460, Leuven B-3001, Belgium
| | - Steven Higgins
- Department of Plant and Microbial Biology, University of Zürich, Zürich 8008, Switzerland
| | - Alexander Kutschera
- Department of Phytopathology, Center of Life and Food Sciences, Technical University of Munich, Weihenstephan D-85354, Germany
| | - Jordan Murray
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK
| | - Martha Redway
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK
| | - Talal Salih
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK
| | - Ana C da Silva
- Centre for Biomolecular Sciences, School of Life Sciences, University of Nottingham, Nottingham NG7 2RD, UK
| | - Brian A Smith
- School of Plant Sciences, The University of Arizona, P.O. Box 210036, Forbes Building, 303 Tucson, Arizona 85721-0036, USA
| | - Nathan Smits
- Laboratory of Gene Technology, KU Leuven, Kasteelpark Arenberg 20, bus 2460, Leuven B-3001, Belgium
| | - Ryan Thomson
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK
| | - Stuart Woodcock
- Department of Biological Chemistry, John Innes Centre, Colney Lane, Norwich NR4 7UH, UK
| | - Martin Welch
- Department of Biochemistry, University of Cambridge, Hopkins Building, Tennis Court Road, Cambridge CB2 1QW, UK
| | - Pierre Cornelis
- Laboratoire Microbiologie Signaux et Microenvironnement (LMSM), Université de Rouen, 55, rue St Germain, Evreux 27000, France
| | - Rob Lavigne
- Laboratory of Gene Technology, KU Leuven, Kasteelpark Arenberg 20, bus 2460, Leuven B-3001, Belgium
| | - Vera van Noort
- Centre of Microbial and Plant Genetics, KU Leuven, Kasteelpark Arenberg 20, bus 2460, Leuven B-3001, Belgium
| | - Nicholas P Tucker
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK
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16
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Fléchard M, Duchesne R, Tahrioui A, Bouffartigues E, Depayras S, Hardouin J, Lagy C, Maillot O, Tortuel D, Azuama CO, Clamens T, Duclairoir-Poc C, Catel-Ferreira M, Gicquel G, Feuilloley MGJ, Lesouhaitier O, Heipieper HJ, Groleau MC, Déziel É, Cornelis P, Chevalier S. The absence of SigX results in impaired carbon metabolism and membrane fluidity in Pseudomonas aeruginosa. Sci Rep 2018; 8:17212. [PMID: 30464317 PMCID: PMC6249292 DOI: 10.1038/s41598-018-35503-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 10/23/2018] [Indexed: 12/21/2022] Open
Abstract
In Pseudomonas aeruginosa, SigX is an extra-cytoplasmic function σ factor that belongs to the cell wall stress response network. In previous studies, we made the puzzling observation that sigX mutant growth was severely affected in rich lysogeny broth (LB) but not in minimal medium. Here, through comparative transcriptomic and proteomic analysis, we show that the absence of SigX results in dysregulation of genes, whose products are mainly involved in transport, carbon and energy metabolisms. Production of most of these genes is controlled by carbon catabolite repression (CCR), a key regulatory system than ensures preferential carbon source uptake and utilization, substrate prioritization and metabolism. The strong CCR response elicited in LB was lowered in a sigX mutant, suggesting altered nutrient uptake. Since the absence of SigX affects membrane composition and fluidity, we suspected membrane changes to cause such phenotype. The detergent polysorbate 80 (PS80) can moderately destabilize the envelope resulting in non-specific increased nutrient intake. Remarkably, growth, membrane fluidity and expression of dysregulated genes in the sigX mutant strain were restored in LB supplemented with PS80. Altogether, these data suggest that SigX is indirectly involved in CCR regulation, possibly via its effects on membrane integrity and fluidity.
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Affiliation(s)
- Maud Fléchard
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Rachel Duchesne
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Ali Tahrioui
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Emeline Bouffartigues
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Ségolène Depayras
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Julie Hardouin
- Normandie Université, Université de Rouen Normandie, Laboratoire Polymères Biopolymères Surfaces, PBS, UMR, 6270 CNRS, Mont-Saint-Aignan, France
| | - Coralie Lagy
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Olivier Maillot
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Damien Tortuel
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Cecil Onyedikachi Azuama
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Thomas Clamens
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Cécile Duclairoir-Poc
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Manuella Catel-Ferreira
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Gwendoline Gicquel
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Marc G J Feuilloley
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Olivier Lesouhaitier
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Hermann J Heipieper
- Department of Environmental Biotechnology, UFZ Helmholtz Centre for Environmental Research, Leipzig, Germany
| | | | - Éric Déziel
- INRS-Institut Armand-Frappier, Laval, Québec, Canada
| | - Pierre Cornelis
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France
| | - Sylvie Chevalier
- Normandie Université, Université de Rouen Normandie, Laboratoire de Microbiologie Signaux et Micro-environnement, LMSM EA 4312, Evreux, France.
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17
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Lesouhaitier O, Clamens T, Rosay T, Desriac F, Louis M, Rodrigues S, Gannesen A, Plakunov VK, Bouffartigues E, Tahrioui A, Bazire A, Dufour A, Cornelis P, Chevalier S, Feuilloley MGJ. Host Peptidic Hormones Affecting Bacterial Biofilm Formation and Virulence. J Innate Immun 2018; 11:227-241. [PMID: 30396172 PMCID: PMC6738206 DOI: 10.1159/000493926] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 09/10/2018] [Accepted: 09/10/2018] [Indexed: 12/25/2022] Open
Abstract
Bacterial biofilms constitute a critical problem in hospitals, especially in resuscitation units or for immunocompromised patients, since bacteria embedded in their own matrix are not only protected against antibiotics but also develop resistant variant strains. In the last decade, an original approach to prevent biofilm formation has consisted of studying the antibacterial potential of host communication molecules. Thus, some of these compounds have been identified for their ability to modify the biofilm formation of both Gram-negative and Gram-positive bacteria. In addition to their effect on biofilm production, a detailed study of the mechanism of action of these human hormones on bacterial physiology has allowed the identification of new bacterial pathways involved in biofilm formation. In this review, we focus on the impact of neuropeptidic hormones on bacteria, address some future therapeutic issues, and provide a new view of inter-kingdom communication.
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Affiliation(s)
- Olivier Lesouhaitier
- Laboratory of Microbiology Signals and Microenvironment, LMSM EA 4312, Normandy University, University of Rouen Normandy, Evreux, France,
| | - Thomas Clamens
- Laboratory of Microbiology Signals and Microenvironment, LMSM EA 4312, Normandy University, University of Rouen Normandy, Evreux, France
| | - Thibaut Rosay
- Laboratory of Microbiology Signals and Microenvironment, LMSM EA 4312, Normandy University, University of Rouen Normandy, Evreux, France
| | - Florie Desriac
- Laboratory of Microbiology Signals and Microenvironment, LMSM EA 4312, Normandy University, University of Rouen Normandy, Evreux, France
| | - Mélissande Louis
- Laboratory of Microbiology Signals and Microenvironment, LMSM EA 4312, Normandy University, University of Rouen Normandy, Evreux, France
| | - Sophie Rodrigues
- Laboratory of Microbiology Signals and Microenvironment, LMSM EA 4312, Normandy University, University of Rouen Normandy, Evreux, France
| | - Andrei Gannesen
- Laboratory of Microbiology Signals and Microenvironment, LMSM EA 4312, Normandy University, University of Rouen Normandy, Evreux, France
- Winogradsky Institute of Microbiology, Research Center of Biotechnology of RAS, Moscow, Russian Federation
- Lomonosov Moscow State University, Moscow, Russian Federation
| | - Vladimir K Plakunov
- Winogradsky Institute of Microbiology, Research Center of Biotechnology of RAS, Moscow, Russian Federation
| | - Emeline Bouffartigues
- Laboratory of Microbiology Signals and Microenvironment, LMSM EA 4312, Normandy University, University of Rouen Normandy, Evreux, France
| | - Ali Tahrioui
- Laboratory of Microbiology Signals and Microenvironment, LMSM EA 4312, Normandy University, University of Rouen Normandy, Evreux, France
| | - Alexis Bazire
- Laboratoire de Biotechnologie et Chimie Marines EA 3884, IUEM, Université de Bretagne-Sud (UBL), Lorient, France
| | - Alain Dufour
- Laboratoire de Biotechnologie et Chimie Marines EA 3884, IUEM, Université de Bretagne-Sud (UBL), Lorient, France
| | - Pierre Cornelis
- Laboratory of Microbiology Signals and Microenvironment, LMSM EA 4312, Normandy University, University of Rouen Normandy, Evreux, France
| | - Sylvie Chevalier
- Laboratory of Microbiology Signals and Microenvironment, LMSM EA 4312, Normandy University, University of Rouen Normandy, Evreux, France
| | - Marc G J Feuilloley
- Laboratory of Microbiology Signals and Microenvironment, LMSM EA 4312, Normandy University, University of Rouen Normandy, Evreux, France
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18
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Affiliation(s)
- Susu M Zughaier
- Department of Basic Medical Sciences, College of Medicine, Qatar University, Doha, Qatar
| | - Pierre Cornelis
- Microbiology Unit, Department of Bioengineering Sciences, Vrije Universiteit Brussel and VIB Department of Structural Biology, Brussels, Belgium
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19
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Chevalier S, Bouffartigues E, Bazire A, Tahrioui A, Duchesne R, Tortuel D, Maillot O, Clamens T, Orange N, Feuilloley MGJ, Lesouhaitier O, Dufour A, Cornelis P. Extracytoplasmic function sigma factors in Pseudomonas aeruginosa. Biochim Biophys Acta Gene Regul Mech 2018; 1862:706-721. [PMID: 29729420 DOI: 10.1016/j.bbagrm.2018.04.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 03/06/2018] [Accepted: 04/30/2018] [Indexed: 01/26/2023]
Abstract
The opportunistic pathogen Pseudomonas aeruginosa, like all members of the genus Pseudomonas, has the capacity to thrive in very different environments, ranging from water, plant roots, to animals, including humans to whom it can cause severe infections. This remarkable adaptability is reflected in the number of transcriptional regulators, including sigma factors in this bacterium. Among those, the 19 to 21 extracytoplasmic sigma factors (ECFσ) are endowed with different regulons and functions, including the iron starvation σ (PvdS, FpvI, HasI, FecI, FecI2 and others), the cell wall stress ECFσ AlgU, SigX and SbrI, and the unorthodox σVreI involved in the expression of virulence. Recently published data show that these ECFσ have separate regulons although presenting some cross-talk. We will present evidence that these different ECFσ are involved in the expression of different phenotypes, ranging from cell-wall stress response, production of extracellular polysaccharides, formation of biofilms, to iron acquisition.
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Affiliation(s)
- Sylvie Chevalier
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, Normandy University, University of Rouen, 27000 Evreux, France.
| | - Emeline Bouffartigues
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, Normandy University, University of Rouen, 27000 Evreux, France
| | - Alexis Bazire
- IUEM, Université de Bretagne-Sud (UBL), Laboratoire de Biotechnologie et Chimie Marines EA 3884, Lorient, France
| | - Ali Tahrioui
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, Normandy University, University of Rouen, 27000 Evreux, France
| | - Rachel Duchesne
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, Normandy University, University of Rouen, 27000 Evreux, France
| | - Damien Tortuel
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, Normandy University, University of Rouen, 27000 Evreux, France
| | - Olivier Maillot
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, Normandy University, University of Rouen, 27000 Evreux, France
| | - Thomas Clamens
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, Normandy University, University of Rouen, 27000 Evreux, France
| | - Nicole Orange
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, Normandy University, University of Rouen, 27000 Evreux, France
| | - Marc G J Feuilloley
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, Normandy University, University of Rouen, 27000 Evreux, France
| | - Olivier Lesouhaitier
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, Normandy University, University of Rouen, 27000 Evreux, France
| | - Alain Dufour
- IUEM, Université de Bretagne-Sud (UBL), Laboratoire de Biotechnologie et Chimie Marines EA 3884, Lorient, France
| | - Pierre Cornelis
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, Normandy University, University of Rouen, 27000 Evreux, France
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20
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Dingemans J, Eyns H, Willekens J, Monsieurs P, Van Houdt R, Cornelis P, Malfroot A, Crabbé A. Intrapulmonary percussive ventilation improves lung function in cystic fibrosis patients chronically colonized with Pseudomonas aeruginosa: a pilot cross-over study. Eur J Clin Microbiol Infect Dis 2018; 37:1143-1151. [PMID: 29560543 DOI: 10.1007/s10096-018-3232-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 03/12/2018] [Indexed: 12/29/2022]
Abstract
High levels of shear stress can prevent and disrupt Pseudomonas aeruginosa biofilm formation in vitro. Intrapulmonary percussive ventilation (IPV) could be used to introduce shear stress into the lungs of cystic fibrosis (CF) patients to disrupt biofilms in vivo. We performed a first-of-its-kind pilot clinical study to evaluate short-term IPV therapy at medium (200 bursts per minute, bpm) and high frequency (400 bpm) as compared to autogenic drainage (AD) on lung function and the behavior of P. aeruginosa in the CF lung in four patients who are chronically colonized by P. aeruginosa. A significant difference between the three treatment groups was observed for both the forced expiratory volume in 1 s (FEV1) and the forced vital capacity (FVC) (p < 0.05). More specifically, IPV at high frequency significantly increased FEV1 and FVC compared to AD (p < 0.05) and IPV at medium frequency (p < 0.001). IPV at high frequency enhanced the expression levels of P. aeruginosa planktonic marker genes, which was less pronounced with IPV at medium frequency or AD. In conclusion, IPV at high frequency could potentially alter the behavior of P. aeruginosa in the CF lung and improve lung function. TRIAL REGISTRATION The trail was retrospectively registered at the ISRCTN registry on 6 June 2013, under trial registration number ISRCTN75391385.
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Affiliation(s)
- Jozef Dingemans
- Department of Bioengineering Sciences, Research Group Microbiology, Vrije Universiteit Brussel and VIB Structural Biology, Pleinlaan 2, 1050, Brussels, Belgium
- Department of Biological Sciences, Binghamton Biofilm Research Center, Binghamton University, Binghamton, NY, 13902, USA
| | - Hanneke Eyns
- Cystic Fibrosis Clinic and Pediatric Infectious Diseases, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (UZB), 1090, Brussels, Belgium
| | - Julie Willekens
- Cystic Fibrosis Clinic and Pediatric Infectious Diseases, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (UZB), 1090, Brussels, Belgium
| | - Pieter Monsieurs
- Microbiology Unit, Expert Group Molecular and Cellular Biology, Institute for Environment, Health and Safety, Belgian Nuclear Research Centre (SCK CEN), 2400, Mol, Belgium
| | - Rob Van Houdt
- Microbiology Unit, Expert Group Molecular and Cellular Biology, Institute for Environment, Health and Safety, Belgian Nuclear Research Centre (SCK CEN), 2400, Mol, Belgium
| | - Pierre Cornelis
- Department of Bioengineering Sciences, Research Group Microbiology, Vrije Universiteit Brussel and VIB Structural Biology, Pleinlaan 2, 1050, Brussels, Belgium
| | - Anne Malfroot
- Cystic Fibrosis Clinic and Pediatric Infectious Diseases, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (UZB), 1090, Brussels, Belgium
| | - Aurélie Crabbé
- Laboratory of Pharmaceutical Microbiology, Ghent University, Ottergemsesteenweg 460, 9000, Ghent, Belgium.
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Chevalier S, Bouffartigues E, Bodilis J, Maillot O, Lesouhaitier O, Feuilloley MGJ, Orange N, Dufour A, Cornelis P. Structure, function and regulation of Pseudomonas aeruginosa porins. FEMS Microbiol Rev 2017; 41:698-722. [PMID: 28981745 DOI: 10.1093/femsre/fux020] [Citation(s) in RCA: 200] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 04/24/2017] [Indexed: 12/11/2022] Open
Abstract
Pseudomonas aeruginosa is a Gram-negative bacterium belonging to the γ-proteobacteria. Like other members of the Pseudomonas genus, it is known for its metabolic versatility and its ability to colonize a wide range of ecological niches, such as rhizosphere, water environments and animal hosts, including humans where it can cause severe infections. Another particularity of P. aeruginosa is its high intrinsic resistance to antiseptics and antibiotics, which is partly due to its low outer membrane permeability. In contrast to Enterobacteria, pseudomonads do not possess general diffusion porins in their outer membrane, but rather express specific channel proteins for the uptake of different nutrients. The major outer membrane 'porin', OprF, has been extensively investigated, and displays structural, adhesion and signaling functions while its role in the diffusion of nutrients is still under discussion. Other porins include OprB and OprB2 for the diffusion of glucose, the two small outer membrane proteins OprG and OprH, and the two porins involved in phosphate/pyrophosphate uptake, OprP and OprO. The remaining nineteen porins belong to the so-called OprD (Occ) family, which is further split into two subfamilies termed OccD (8 members) and OccK (11 members). In the past years, a large amount of information concerning the structure, function and regulation of these porins has been published, justifying why an updated review is timely.
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Affiliation(s)
- Sylvie Chevalier
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, University of Rouen, Normandy University, 27000 Evreux, France
| | - Emeline Bouffartigues
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, University of Rouen, Normandy University, 27000 Evreux, France
| | - Josselin Bodilis
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, University of Rouen, Normandy University, 27000 Evreux, France
| | - Olivier Maillot
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, University of Rouen, Normandy University, 27000 Evreux, France
| | - Olivier Lesouhaitier
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, University of Rouen, Normandy University, 27000 Evreux, France
| | - Marc G J Feuilloley
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, University of Rouen, Normandy University, 27000 Evreux, France
| | - Nicole Orange
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, University of Rouen, Normandy University, 27000 Evreux, France
| | - Alain Dufour
- IUEM, Laboratoire de Biotechnologie et Chimie Marines EA 3884, Université de Bretagne-Sud (UEB), 56321 Lorient, France
| | - Pierre Cornelis
- Laboratory of Microbiology Signals and Microenvironment LMSM EA 4312, University of Rouen, Normandy University, 27000 Evreux, France
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22
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Acebo-Guerrero Y, Hernández-Rodríguez A, Vandeputte O, Miguélez-Sierra Y, Heydrich-Pérez M, Ye L, Cornelis P, Bertin P, El Jaziri M. Characterization of Pseudomonas chlororaphis from Theobroma cacao L. rhizosphere with antagonistic activity against Phytophthora palmivora (Butler). J Appl Microbiol 2016. [PMID: 26218193 DOI: 10.1111/jam.12910] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIM To isolate and characterize rhizobacteria from Theobroma cacao with antagonistic activity against Phytophthora palmivora, the causal agent of the black pod rot, which is one of the most important diseases of T. cacao. METHODS AND RESULTS Among 127 rhizobacteria isolated from cacao rhizosphere, three isolates (CP07, CP24 and CP30) identified as Pseudomonas chlororaphis, showed in vitro antagonistic activity against P. palmivora. Direct antagonism tested in cacao detached leaves revealed that the isolated rhizobacteria were able to reduce symptom severity upon infection with P. palmivora Mab1, with Ps. chlororaphis CP07 standing out as a potential biocontrol agent. Besides, reduced symptom severity on leaves was also observed in planta where cacao root system was pretreated with the isolated rhizobacteria followed by leaf infection with P. palmivora Mab1. The production of lytic enzymes, siderophores, biosurfactants and HCN, as well as the detection of genes encoding antibiotics, the formation of biofilm, and bacterial motility were also assessed for all three rhizobacterial strains. By using a mutant impaired in viscosin production, derived from CP07, it was found that this particular biosurfactant turned out to be crucial for both motility and biofilm formation, but not for the in vitro antagonism against Phytophthora, although it may contribute to the bioprotection of T. cacao. CONCLUSIONS In the rhizosphere of T. cacao, there are rhizobacteria, such as Ps. chlororaphis, able to protect plants against P. palmivora. SIGNIFICANCE AND IMPACT OF THE STUDY This study provides a theoretical basis for the potential use of Ps. chlororaphis CP07 as a biocontrol agent for the protection of cacao plants from P. palmivora infection.
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Affiliation(s)
- Y Acebo-Guerrero
- Laboratory of Microbial Ecology, Faculty of Biology, University of Havana, Plaza, Cuba
| | - A Hernández-Rodríguez
- Laboratory of Microbial Ecology, Faculty of Biology, University of Havana, Plaza, Cuba
| | - O Vandeputte
- Laboratory of Plant Biotechnology, Université Libre de Bruxelles, Gosselies, Belgium
| | | | - M Heydrich-Pérez
- Laboratory of Microbial Ecology, Faculty of Biology, University of Havana, Plaza, Cuba
| | - L Ye
- Department of Bioengineering Sciences, Research group Microbiology, Vrije Universiteit Brussel and VIB Structural Biology, Brussels, Belgium
| | - P Cornelis
- Department of Bioengineering Sciences, Research group Microbiology, Vrije Universiteit Brussel and VIB Structural Biology, Brussels, Belgium
| | - P Bertin
- Earth and Life Institute - Agronomy (ELI-A), Université Catholique de Louvain, Louvain, Belgium
| | - M El Jaziri
- Laboratory of Plant Biotechnology, Université Libre de Bruxelles, Gosselies, Belgium
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23
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Dingemans J, Ghequire MGK, Craggs M, De Mot R, Cornelis P. Identification and functional analysis of a bacteriocin, pyocin S6, with ribonuclease activity from a Pseudomonas aeruginosa cystic fibrosis clinical isolate. Microbiologyopen 2016; 5:413-23. [PMID: 26860427 PMCID: PMC4905994 DOI: 10.1002/mbo3.339] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 11/30/2015] [Accepted: 01/05/2016] [Indexed: 01/28/2023] Open
Abstract
S‐type pyocins are bacteriocins produced by Pseudomonas aeruginosa isolates to antagonize or kill other strains of the same species. They have a modular organization comprising a receptor‐binding domain recognizing a surface constituent of the target bacterium, a domain for translocation through the periplasm, and a killing or toxic domain with DNase, tRNase, or pore‐forming activity. Pyocins S2, S3, S4, and S5 recognize TonB‐dependent ferri‐siderophore receptors in the outer membrane. We here describe a new nuclease bacteriocin, pyocin S6, encoded in the genome of a P. aeruginosa cystic fibrosis (CF) clinical isolate, CF_PA39. Similarly to pyocins S1 and S2, the S6 toxin–immunity gene tandem was recruited to the genomic region encoding exotoxin A. The pyocin S6 receptor‐binding and translocation domains are identical to those of pyocin S1, whereas the killing domain is similar to the 16S ribonuclease domain of Escherichia coli colicin E3. The cytotoxic activity was abolished in pyocin S6 forms with a mutation in the colicin E3‐equivalent catalytic motif. The CF_PA39 S6 immunity gene displays a higher expression level than the gene encoding the killing protein, the latter being only detected when bacteria are grown under iron‐limiting conditions. In the S1‐pyocinogenic strain P. aeruginosa ATCC 25324 and pyocin S2 producer P. aeruginosa PAO1, a remnant of the pyocin S6 killing domain and an intact S6‐type immunity gene are located downstream of their respective pyocin operons. Strain PAO1 is insensitive for pyocin S6, and its S6‐type immunity gene provides protection against pyocin S6 activity. Purified pyocin S6 inhibits one‐fifth of 110 P. aeruginosa CF clinical isolates tested, showing clearer inhibition zones when the target cells are grown under iron limitation. In this panel, about half of the CF clinical isolates were found to host the S6 genes. The pyocin S6 locus is also present in the genome of some non‐CF clinical isolates.
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Affiliation(s)
- Jozef Dingemans
- Department of Bioengineering Sciences, Research group Microbiology and VIB Department of Structural Biology, Vrije Universiteit Brussel, Pleinlaan 2, Brussels, 1050, Belgium
| | - Maarten G K Ghequire
- Department Microbial and Molecular Systems, Centre of Microbial and Plant Genetics, KU Leuven Kasteelpark Arenberg 20 - bus 2460, Heverlee, B-3001, Belgium
| | - Michael Craggs
- Department of Bioengineering Sciences, Research group Microbiology and VIB Department of Structural Biology, Vrije Universiteit Brussel, Pleinlaan 2, Brussels, 1050, Belgium
| | - René De Mot
- Department Microbial and Molecular Systems, Centre of Microbial and Plant Genetics, KU Leuven Kasteelpark Arenberg 20 - bus 2460, Heverlee, B-3001, Belgium
| | - Pierre Cornelis
- Department of Bioengineering Sciences, Research group Microbiology and VIB Department of Structural Biology, Vrije Universiteit Brussel, Pleinlaan 2, Brussels, 1050, Belgium
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24
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Leneveu-Jenvrin C, Bouffartigues E, Maillot O, Cornelis P, Feuilloley MGJ, Connil N, Chevalier S. Expression of the translocator protein (TSPO) from Pseudomonas fluorescens Pf0-1 requires the stress regulatory sigma factors AlgU and RpoH. Front Microbiol 2015; 6:1023. [PMID: 26441945 PMCID: PMC4585239 DOI: 10.3389/fmicb.2015.01023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 09/08/2015] [Indexed: 11/19/2022] Open
Abstract
The translocator protein (TSPO), previously designated as peripheral-type benzodiazepine receptor, is an evolutionary conserved protein that is found in many Eukarya, Archae, and Bacteria, in which it plays several important functions including for example membrane biogenesis, signaling, and stress response. A tspo homolog gene has been identified in several members of the Pseudomonas genus, among which the soil bacterium P. fluorescens Pf0-1. In this bacterium, the tspo gene is located in the vicinity of a putative hybrid histidine kinase-encoding gene. Since tspo has been involved in water stress related response in plants, we explored the effects of hyperosmolarity and temperature on P. fluorescens Pf0-1 tspo expression using a strategy based on lux-reporter fusions. We show that the two genes Pfl01_2810 and tspo are co-transcribed forming a transcription unit. The expression of this operon is growth phase-dependent and is increased in response to high concentrations of NaCl, sucrose and to a D-cycloserine treatment, which are conditions leading to activity of the major cell wall stress responsive extracytoplasmic sigma factor AlgU. Interestingly, the promoter region activity is strongly lowered in a P. aeruginosa algU mutant, suggesting that AlgU may be involved at least partly in the molecular mechanism leading to Pfl01_2810-tspo expression. In silico analysis of this promoter region failed to detect an AlgU consensus binding site; however, a putative binding site for the heat shock response RpoH sigma factor was detected. Accordingly, the promoter activity of the region containing this sequence is increased in response to high growth temperature and slightly lowered in a P. aeruginosa rpoH mutant strain. Taken together, our data suggest that P. fluorescens tspo gene may belong at least partly to the cell wall stress response.
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Affiliation(s)
| | - Emeline Bouffartigues
- Laboratory of Microbiology Signals and Microenvironment, University of Rouen Evreux, France
| | - Olivier Maillot
- Laboratory of Microbiology Signals and Microenvironment, University of Rouen Evreux, France
| | - Pierre Cornelis
- Laboratory of Microbiology Signals and Microenvironment, University of Rouen Evreux, France
| | - Marc G J Feuilloley
- Laboratory of Microbiology Signals and Microenvironment, University of Rouen Evreux, France
| | - Nathalie Connil
- Laboratory of Microbiology Signals and Microenvironment, University of Rouen Evreux, France
| | - Sylvie Chevalier
- Laboratory of Microbiology Signals and Microenvironment, University of Rouen Evreux, France
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25
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Staicu L, Ackerson C, Cornelis P, Ye L, Berendsen R, Hunter W, Noblitt S, Henry C, Cappa J, Montenieri R, Wong A, Musilova L, Sura-de Jong M, van Hullebusch E, Lens P, Reynolds R, Pilon-Smits E. Pseudomonas moraviensis
subsp. stanleyae, a bacterial endophyte of hyperaccumulator Stanleya pinnata
, is capable of efficient selenite reduction to elemental selenium under aerobic conditions. J Appl Microbiol 2015; 119:400-10. [DOI: 10.1111/jam.12842] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 04/28/2015] [Accepted: 04/28/2015] [Indexed: 11/29/2022]
Affiliation(s)
- L.C. Staicu
- Biology Department; Colorado State University; Fort Collins CO USA
- UNESCO-IHE Institute for Water Education; Delft The Netherlands
- Université Paris-Est, Laboratoire Géomatériaux et Environnement, UPEM; Marne-la-Vallée, Cedex 2 France
| | - C.J. Ackerson
- Chemistry Department; Colorado State University; Fort Collins CO USA
| | - P. Cornelis
- VIB Department of Structural Biology; Department of Bioengineering Sciences; Research Group Microbiology; Vrije Universiteit; Brussels Belgium
| | - L. Ye
- VIB Department of Structural Biology; Department of Bioengineering Sciences; Research Group Microbiology; Vrije Universiteit; Brussels Belgium
| | - R.L. Berendsen
- Plant-Microbe Interactions; Department of Biology; Faculty of Science; Utrecht University; Utrecht The Netherlands
| | | | - S.D. Noblitt
- Chemistry Department; Colorado State University; Fort Collins CO USA
| | - C.S. Henry
- Chemistry Department; Colorado State University; Fort Collins CO USA
| | - J.J. Cappa
- UNESCO-IHE Institute for Water Education; Delft The Netherlands
| | | | - A.O. Wong
- Chemistry Department; Colorado State University; Fort Collins CO USA
| | - L. Musilova
- Biochemistry and Microbiology Department; Institute of Chemical Technology in Prague; Prague Czech Republic
| | - M. Sura-de Jong
- Biochemistry and Microbiology Department; Institute of Chemical Technology in Prague; Prague Czech Republic
| | - E.D. van Hullebusch
- Université Paris-Est, Laboratoire Géomatériaux et Environnement, UPEM; Marne-la-Vallée, Cedex 2 France
| | - P.N.L. Lens
- UNESCO-IHE Institute for Water Education; Delft The Netherlands
| | - R.J.B. Reynolds
- Biology Department; Colorado State University; Fort Collins CO USA
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26
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Cornelis P, Moguilevsky N, Jacques JF, Masson PL. Study of the siderophores and receptors in different clinical isolates of Pseudomonas aeruginosa. Antibiot Chemother (1971) 2015; 39:290-306. [PMID: 2823691 DOI: 10.1159/000414354] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- P Cornelis
- Catholic University of Louvain, Faculty of Medicine, Brussels, Belgium
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27
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Ye L, Hildebrand F, Dingemans J, Ballet S, Laus G, Matthijs S, Berendsen R, Cornelis P. Draft genome sequence analysis of a Pseudomonas putida W15Oct28 strain with antagonistic activity to Gram-positive and Pseudomonas sp. pathogens. PLoS One 2014; 9:e110038. [PMID: 25369289 PMCID: PMC4219678 DOI: 10.1371/journal.pone.0110038] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 09/09/2014] [Indexed: 12/22/2022] Open
Abstract
Pseudomonas putida is a member of the fluorescent pseudomonads known to produce the yellow-green fluorescent pyoverdine siderophore. P. putida W15Oct28, isolated from a stream in Brussels, was found to produce compound(s) with antimicrobial activity against the opportunistic pathogens Staphylococcus aureus, Pseudomonas aeruginosa, and the plant pathogen Pseudomonas syringae, an unusual characteristic for P. putida. The active compound production only occurred in media with low iron content and without organic nitrogen sources. Transposon mutants which lost their antimicrobial activity had the majority of insertions in genes involved in the biosynthesis of pyoverdine, although purified pyoverdine was not responsible for the antagonism. Separation of compounds present in culture supernatants revealed the presence of two fractions containing highly hydrophobic molecules active against P. aeruginosa. Analysis of the draft genome confirmed the presence of putisolvin biosynthesis genes and the corresponding lipopeptides were found to contribute to the antimicrobial activity. One cluster of ten genes was detected, comprising a NAD-dependent epimerase, an acetylornithine aminotransferase, an acyl CoA dehydrogenase, a short chain dehydrogenase, a fatty acid desaturase and three genes for a RND efflux pump. P. putida W15Oct28 genome also contains 56 genes encoding TonB-dependent receptors, conferring a high capacity to utilize pyoverdines from other pseudomonads. One unique feature of W15Oct28 is also the presence of different secretion systems including a full set of genes for type IV secretion, and several genes for type VI secretion and their VgrG effectors.
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Affiliation(s)
- Lumeng Ye
- Department of Bioengineering Sciences, Research group Microbiology, Vrije Universiteit Brussel and VIB Structural Biology Brussels, Brussels, Belgium
| | - Falk Hildebrand
- Department of Bioengineering Sciences, Research group Microbiology, Vrije Universiteit Brussel and VIB Structural Biology Brussels, Brussels, Belgium
| | - Jozef Dingemans
- Department of Bioengineering Sciences, Research group Microbiology, Vrije Universiteit Brussel and VIB Structural Biology Brussels, Brussels, Belgium
| | - Steven Ballet
- Chemistry Department, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - George Laus
- Chemistry Department, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - Sandra Matthijs
- Institut de Recherches Microbiologiques - Wiame, Campus du CERIA, Brussels, Belgium
| | - Roeland Berendsen
- Plant-Microbe Interactions, Utrecht University, Utrecht, The Netherlands
| | - Pierre Cornelis
- Department of Bioengineering Sciences, Research group Microbiology, Vrije Universiteit Brussel and VIB Structural Biology Brussels, Brussels, Belgium
- * E-mail:
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28
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Matthijs S, Vander Wauven C, Cornu B, Ye L, Cornelis P, Thomas CM, Ongena M. Antimicrobial properties of Pseudomonas strains producing the antibiotic mupirocin. Res Microbiol 2014; 165:695-704. [PMID: 25303834 DOI: 10.1016/j.resmic.2014.09.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 09/17/2014] [Accepted: 09/29/2014] [Indexed: 11/19/2022]
Abstract
Mupirocin is a polyketide antibiotic with broad antibacterial activity. It was isolated and characterized about 40 years ago from Pseudomonas fluorescens NCIMB 10586. To study the phylogenetic distribution of mupirocin producing strains in the genus Pseudomonas a large collection of Pseudomonas strains of worldwide origin, consisting of 117 Pseudomonas type strains and 461 strains isolated from different biological origins, was screened by PCR for the mmpD gene of the mupirocin gene cluster. Five mmpD(+) strains from different geographic and biological origin were identified. They all produced mupirocin and were strongly antagonistic against Staphylococcus aureus. Phylogenetic analysis showed that mupirocin production is limited to a single species. Inactivation of mupirocin production leads to complete loss of in vitro antagonism against S. aureus, except on certain iron-reduced media where the siderophore pyoverdine is responsible for the in vitro antagonism of a mupirocin-negative mutant. In addition to mupirocin some of the strains produced lipopeptides of the massetolide group. These lipopeptides do not play a role in the observed in vitro antagonism of the mupirocin producing strains against S. aureus.
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Affiliation(s)
- Sandra Matthijs
- Institut de Recherches Microbiologiques - Wiame, Campus du CERIA, 1 avenue Emile Gryson, bât 4B, B-1070 Bruxelles, Belgium.
| | - Corinne Vander Wauven
- Institut de Recherches Microbiologiques - Wiame, Campus du CERIA, 1 avenue Emile Gryson, bât 4B, B-1070 Bruxelles, Belgium.
| | - Bertrand Cornu
- Institut de Recherches Microbiologiques - Wiame, Campus du CERIA, 1 avenue Emile Gryson, bât 4B, B-1070 Bruxelles, Belgium.
| | - Lumeng Ye
- Department of Bioengineering Sciences, Research Group of Microbiology and Vlaams Instituut voor Biotechnologie, Vrije Universiteit Brussel, Brussels, Belgium.
| | - Pierre Cornelis
- Department of Bioengineering Sciences, Research Group of Microbiology and Vlaams Instituut voor Biotechnologie, Vrije Universiteit Brussel, Brussels, Belgium.
| | - Christopher M Thomas
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
| | - Marc Ongena
- Walloon Center for Industrial Biology, University of Liège, Gembloux Agro-Bio Tech, Gembloux, Belgium.
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Ghequire MGK, Dingemans J, Pirnay JP, De Vos D, Cornelis P, De Mot R. O serotype-independent susceptibility of Pseudomonas aeruginosa to lectin-like pyocins. Microbiologyopen 2014; 3:875-84. [PMID: 25224846 PMCID: PMC4263511 DOI: 10.1002/mbo3.210] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 07/25/2014] [Accepted: 07/28/2014] [Indexed: 11/08/2022] Open
Abstract
Lectin-like bacteriocins of the LlpA family, originally identified in plant-associated bacteria, are narrow-spectrum antibacterial proteins composed of two tandemly organized monocot mannose-binding lectin (MMBL) domains. The LlpA-like bacteriocin of Pseudomonas aeruginosa C1433, pyocin L1, lacks any similarity to known P. aeruginosa bacteriocins. The initial interaction of pyocin L1 with target cells is mediated by binding to d-rhamnose, present in the common polysaccharide antigen of lipopolysaccharides (LPS), but the actual cytotoxic mechanism is unknown. In this study, we characterized the activity range of pyocin L1 and two additional L pyocins revealed by genome mining, representing two highly diverged LlpA groups in P. aeruginosa. The recombinant proteins exhibit species-specific antagonistic activities down to nanomolar concentrations against clinical and environmental P. aeruginosa strains, including several multidrug-resistant isolates. The overlap in target strain spectrum between two close homologues of the pyocin L1 group is only minimal, contrasting with the considerable spectral redundancy of LlpA proteins reported for other Pseudomonas species. No correlation was found between L pyocin susceptibility and phylogenetic relatedness of P. aeruginosa isolates. Sensitive strains were retrieved in 13 out of 15 O serotypes tested, excluding the possibility that the highly variable and immunogenic O serotype antigen of the LPS coating would represent a dominant susceptibility-discriminating factor.
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Affiliation(s)
- Maarten G K Ghequire
- Centre of Microbial and Plant Genetics, University of Leuven, 3001, Heverlee, Belgium
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30
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Kubica M, Hildebrand F, Brinkman BM, Goossens D, Del Favero J, Vercammen K, Cornelis P, Schröder JM, Vandenabeele P, Raes J, Declercq W. The skin microbiome of caspase-14-deficient mice shows mild dysbiosis. Exp Dermatol 2014; 23:561-7. [DOI: 10.1111/exd.12458] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/22/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Malgorzata Kubica
- Inflammation Research Center; VIB; Ghent Belgium
- Department of Biomedical Molecular Biology; Ghent University; Ghent Belgium
| | - Falk Hildebrand
- Department of Structural Biology; VIB; Brussels Belgium
- Laboratory for Molecular Bacteriology (Rega Institute); VIB-KULeuven; Leuven Belgium
| | - Brigitta M. Brinkman
- Inflammation Research Center; VIB; Ghent Belgium
- Department of Biomedical Molecular Biology; Ghent University; Ghent Belgium
| | - Dirk Goossens
- Applied Molecular Genomics; VIB Department of Molecular Genetics; Antwerp Belgium
- Department Biomedical Sciences; University of Antwerp; Antwerp Belgium
| | - Jurgen Del Favero
- Applied Molecular Genomics; VIB Department of Molecular Genetics; Antwerp Belgium
- Department Biomedical Sciences; University of Antwerp; Antwerp Belgium
| | - Ken Vercammen
- Department of Structural Biology; VIB; Brussels Belgium
- Laboratory for Molecular Bacteriology (Rega Institute); VIB-KULeuven; Leuven Belgium
| | - Pierre Cornelis
- Department of Structural Biology; VIB; Brussels Belgium
- Laboratory for Molecular Bacteriology (Rega Institute); VIB-KULeuven; Leuven Belgium
| | | | - Peter Vandenabeele
- Inflammation Research Center; VIB; Ghent Belgium
- Department of Biomedical Molecular Biology; Ghent University; Ghent Belgium
| | - Jeroen Raes
- Department of Structural Biology; VIB; Brussels Belgium
- Laboratory for Molecular Bacteriology (Rega Institute); VIB-KULeuven; Leuven Belgium
| | - Wim Declercq
- Inflammation Research Center; VIB; Ghent Belgium
- Department of Biomedical Molecular Biology; Ghent University; Ghent Belgium
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Salvi F, Agniswamy J, Yuan H, Vercammen K, Pelicaen R, Cornelis P, Spain JC, Weber IT, Gadda G. The combined structural and kinetic characterization of a bacterial nitronate monooxygenase from Pseudomonas aeruginosa PAO1 establishes NMO class I and II. J Biol Chem 2014; 289:23764-75. [PMID: 25002579 DOI: 10.1074/jbc.m114.577791] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Nitronate monooxygenase (NMO) oxidizes the mitochondrial toxin propionate 3-nitronate (P3N) to malonate semialdehyde. The enzyme has been previously characterized biochemically in fungi, but no structural information is available. Based on amino acid similarity 4,985 genes are annotated in the GenBank(TM) as NMO. Of these, 4,424 (i.e. 89%) are bacterial genes, including several Pseudomonads that have been shown to use P3N as growth substrate. Here, we have cloned and expressed the gene pa4202 of Pseudomonas aeruginosa PAO1, purified the resulting protein, and characterized it. The enzyme is active on P3N and other alkyl nitronates, but cannot oxidize nitroalkanes. P3N is the best substrate at pH 7.5 and atmospheric oxygen with k(cat)(app)/K(m)(app) of 12 × 10(6) M(-1) s(-1), k(cat)(app) of 1300 s(-1), and K(m)(app) of 110 μm. Anerobic reduction of the enzyme with P3N yields a flavosemiquinone, which is formed within 7.5 ms, consistent with this species being a catalytic intermediate. Absorption spectroscopy, mass spectrometry, and x-ray crystallography demonstrate a tightly, non-covalently bound FMN in the active site of the enzyme. Thus, PA4202 is the first NMO identified and characterized in bacteria. The x-ray crystal structure of the enzyme was solved at 1.44 Å, showing a TIM barrel-fold. Four motifs in common with the biochemically characterized NMO from Cyberlindnera saturnus are identified in the structure of bacterial NMO, defining Class I NMO, which includes bacterial, fungal, and two animal NMOs. Notably, the only other NMO from Neurospora crassa for which biochemical evidence is available lacks the four motifs, defining Class II NMO.
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Affiliation(s)
| | | | | | - Ken Vercammen
- the Department of Bioengineering Sciences, Vrije Universiteit Brussel, Belgium, and the Department of Structural Biology Brussels, VIB, Pleinlaan 2, 1050 Brussels, Belgium
| | - Rudy Pelicaen
- the Department of Bioengineering Sciences, Vrije Universiteit Brussel, Belgium, and the Department of Structural Biology Brussels, VIB, Pleinlaan 2, 1050 Brussels, Belgium
| | - Pierre Cornelis
- the Department of Bioengineering Sciences, Vrije Universiteit Brussel, Belgium, and the Department of Structural Biology Brussels, VIB, Pleinlaan 2, 1050 Brussels, Belgium
| | - Jim C Spain
- the School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30302
| | - Irene T Weber
- From the Departments of Chemistry, Biology, Center for Biotechnology and Drug Design,
| | - Giovanni Gadda
- From the Departments of Chemistry, Biology, Center for Biotechnology and Drug Design, Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30302,
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Matthijs S, Budzikiewicz H, Schäfer M, Wathelet B, Cornelis P. Ornicorrugatin, a New Siderophore from Pseudomonas fluorescens AF76. ACTA ACUST UNITED AC 2014; 63:8-12. [DOI: 10.1515/znc-2008-1-202] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
From a pyoverdin-negative mutant of Pseudomonas fluorescens AF76 a new lipopeptidic siderophore (ornicorrugatin) could be isolated. It is structurally related to the siderophore of Pseudomonas corrugata differing in the replacement of one Dab unit by Orn.
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Affiliation(s)
- Sandra Matthijs
- Laboratory of Microbial Interactions, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium
| | - Herbert Budzikiewicz
- Institut für Organische Chemie der Universität zu Köln, Greinstr. 4, D-50939 Köln, Germany
| | - Mathias Schäfer
- Institut für Organische Chemie der Universität zu Köln, Greinstr. 4, D-50939 Köln, Germany
| | - Bernard Wathelet
- Chimie Biologique Industrielle, Faculté Universitaire des Sciences agronomiques, Passage des Déporté s, 2, B-5030 Gembloux, Belgium
| | - Pierre Cornelis
- Laboratory of Microbial Interactions, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium
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Ye L, Cornelis P, Guillemyn K, Ballet S, Christophersen C, Hammerich O. Structure Revision of N-Mercapto-4-formylcarbostyril Produced by Pseudomonas fluorescens G308 to 2-(2-Hydroxyphenyl)thiazole-4-carbaldehyde [aeruginaldehyde]. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900615] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
An antibiotic substance isolated from Pseudomonas fluorescens strain G308 was earlier assigned the structure of N-mercapto-4-formylcarbostyril, but computational predictions of the 1H and 13C NMR magnetic shielding tensors show this structure to be incompatible with the published spectroscopic data. The same is true for six quinoline derivatives related to N-mercapto-4-formylcarbostyril by permutation of the O and S atoms. In contrast, 2-(2-hydroxyphenyl)thiazole-4-carbaldehyde [aeruginaldehyde], isolated from Pseudomonas protegens Pf-5, together with the reduced derivative aeruginol, displays spectroscopic data identical with those of the alleged carbostyril derivative. In addition, the published 1H and 13C NMR data are in agreement with those calculated for aeruginaldehyde. We propose that aeruginaldehyde and aeruginol originate from the non-ribosomal peptide synthetase enzymes involved in the siderophores enantio-pyochelin (or pyochelin) biosynthetic pathways.
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Affiliation(s)
- Lumeng Ye
- VIB Structural Biology Brussels and Department of Bioengineering Sciences, Research Group Microbiology, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussels, Belgium
| | - Pierre Cornelis
- VIB Structural Biology Brussels and Department of Bioengineering Sciences, Research Group Microbiology, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussels, Belgium
| | - Karel Guillemyn
- Laboratory of Organic Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussel, Belgium
| | - Steven Ballet
- Laboratory of Organic Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussel, Belgium
| | - Carsten Christophersen
- Department of Systems Biology, Technical University of Denmark, Søltofts Plads, DK-2800, Lyngby, Denmark
| | - Ole Hammerich
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
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Ye L, Cornelis P, Guillemyn K, Ballet S, Hammerich O. Structure revision of N-mercapto-4-formylcarbostyril produced by Pseudomonas fluorescens G308 to 2-(2-hydroxyphenyl)thiazole-4-carbaldehyde [aeruginaldehyde]. Nat Prod Commun 2014; 9:789-794. [PMID: 25115080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
An antibiotic substance isolated from Pseudomonas fluorescens strain G308 was earlier assigned the structure of N-mercapto-4-formylcarbostyril, but computational predictions of the 1H and 13C NMR magnetic shielding tensors show this structure to be incompatible with the published spectroscopic data. The same is true for six quinoline derivatives related to N-mercapto-4-formylcarbostyril by permutation of the O and S atoms. In contrast, 2-(2-hydroxyphenyl)thiazole-4-carbaldehyde [aeruginaldehyde], isolated from Pseudomonas protegens Pf-5, together with the reduced derivative aeruginol, displays spectroscopic data identical with those of the alleged carbostyril derivative. In addition, the published 1H and 13C NMR data are in agreement with those calculated for aeruginaldehyde. We propose that aeruginaldehyde and aeruginol originate from the non-ribosomal peptide synthetase enzymes involved in the siderophores enantio-pyochelin (or pyochelin) biosynthetic pathways.
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Ye L, Matthijs S, Bodilis J, Hildebrand F, Raes J, Cornelis P. Analysis of the draft genome of Pseudomonas fluorescens ATCC17400 indicates a capacity to take up iron from a wide range of sources, including different exogenous pyoverdines. Biometals 2014; 27:633-44. [PMID: 24756978 DOI: 10.1007/s10534-014-9734-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 04/03/2014] [Indexed: 12/16/2022]
Abstract
All fluorescent pseudomonads (Pseudomonas aeruginosa, P. putida, P. fluorescens, P. syringae and others) are known to produce the high-affinity peptidic yellow-green fluorescent siderophore pyoverdine. These siderophores have peptide chains that are quite diverse and more than 50 pyoverdine structures have been elucidated. In the majority of the cases, a Pseudomonas species is also able to produce a second siderophore of lower affinity for iron. Pseudomonas fluorescens ATCC 17400 has been shown to produce a unique second siderophore, (thio)quinolobactin, which has an antimicrobial activity against the phytopathogenic Oomycete Pythium debaryanum. We show that this strain has the capacity to utilize 16 different pyoverdines, suggesting the presence of several ferripyoverdine receptors. Analysis of the draft genome of P. fluorescens ATCC 17400 confirmed the presence of 55 TonB-dependent receptors, the largest so far for Pseudomonas, among which 15 are predicted to be ferripyoverdine receptors (Fpv). Phylogenetic analysis revealed the presence of two different clades containing ferripyoverdine receptors, with sequences similar to the P. aeruginosa type II FpvA forming a separate cluster. Among the other receptors we confirmed the presence of the QbsI (thio)quinolobactin receptor, an ferri-achromobactin and an ornicorrugatin receptor, several catecholate and four putative heme receptors. Twenty five of the receptors genes were found to be associated with genes encoding extracytoplasmic sigma factors (ECF σ) and transmembrane anti-σ sensors.
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Affiliation(s)
- Lumeng Ye
- Department of Bioengineering Sciences, Research Group Microbiology, VIB Structural Biology, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium
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Dingemans J, Ye L, Hildebrand F, Tontodonati F, Craggs M, Bilocq F, De Vos D, Crabbé A, Van Houdt R, Malfroot A, Cornelis P. The deletion of TonB-dependent receptor genes is part of the genome reduction process that occurs during adaptation of Pseudomonas aeruginosa to the cystic fibrosis lung. Pathog Dis 2014; 71:26-38. [PMID: 24659602 DOI: 10.1111/2049-632x.12170] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 03/12/2014] [Accepted: 03/13/2014] [Indexed: 01/02/2023] Open
Abstract
Chronic Pseudomonas aeruginosa infections are the main cause of morbidity among patients with cystic fibrosis (CF) due to persistent lung inflammation caused by interaction between this bacterium and the immune system. Longitudinal studies of clonally related isolates of a dominant CF clone have indicated that genome reduction frequently occurs during adaptation of P. aeruginosa in the CF lung. In this study, we have evaluated the P. aeruginosa population structure of patients attending the Universitair Ziekenhuis Brussel (UZ Brussel) CF reference center using a combination of genotyping methods. Although the UZ Brussel P. aeruginosa CF population is characterized by the absence of a dominant CF clone, some potential interpatient transmissions could be detected. Interestingly, one of these clones showed deletion of the alternative type I ferripyoverdine receptor gene fpvB. Furthermore, we found that several other TonB-dependent receptors are deleted as well. The genome of one potentially transmissible CF clone was sequenced, revealing large deleted regions including all type III secretion system genes and several virulence genes. Remarkably, a large number of deleted genes are shared between the P. aeruginosa CF clone described in this study and isolates belonging to the dominant Copenhagen CF DK2 clone, suggesting parallel evolution.
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Affiliation(s)
- Jozef Dingemans
- Department of Bioengineering Sciences, Research Group Microbiology, Vrije Universiteit Brussel and VIB Structural Biology, Brussels, Belgium; Unit of Microbiology, Expert Group Molecular and Cellular Biology, Institute for Environment, Health and Safety, Belgian Nuclear Research Centre (SCK CEN), Mol, Belgium
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Elfarash A, Dingemans J, Ye L, Hassan AA, Craggs M, Reimmann C, Thomas MS, Cornelis P. Pore-forming pyocin S5 utilizes the FptA ferripyochelin receptor to kill Pseudomonas aeruginosa. Microbiology (Reading) 2014; 160:261-269. [DOI: 10.1099/mic.0.070672-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Pyocins are toxic proteins produced by some strains of Pseudomonas aeruginosa that are lethal for related strains of the same species. Some soluble pyocins (S2, S3 and S4) were previously shown to use the pyoverdine siderophore receptors to enter the cell. The P. aeruginosa PAO1 pore-forming pyocin S5 encoding gene (PAO985) was cloned into the expression vector pET15b, and the affinity-purified protein product tested for its killing activity against different P. aeruginosa strains. The results, however, did not show any correlation with a specific ferripyoverdine receptor. To further identify the S5 receptor, transposon mutants were generated. Pooled mutants were exposed to pyocin S5 and the resistant colonies growing in the killing zone were selected. The majority of S5-resistant mutants had an insertion in the fptA gene encoding the receptor for the siderophore pyochelin. Complementation of an fptA transposon mutant with the P. aeruginosa fptA gene in trans restored the sensitivity to S5. In order to define the receptor-binding domain of pyocin S5, two hybrid pyocins were constructed containing different regions from pyocin S5 fused to the C-terminal translocation and DNase killing domains of pyocin S2. Only the protein containing amino acid residues 151 to 300 from S5 showed toxicity, indicating that the pyocin S5 receptor-binding domain is not at the N-terminus of the protein as in other S-type pyocins. Pyocin S5 was, however, unable to kill Burkholderia cenocepacia strains producing a ferripyochelin FptA receptor, nor was the B. cenocepacia fptA gene able to restore the sensitivity of the resistant fptA mutant P. aeruginosa strain.
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Affiliation(s)
- Ameer Elfarash
- Department of Genetics, Faculty of Agriculture, Assiut University, Assiut, Egypt
- VIB Department of Structural Biology, Department of Bioengineering Sciences, Research Group Microbiology, Vrije Universiteit Brussel, Pleinlaan 2, Brussels B-1050, Belgium
| | - Jozef Dingemans
- VIB Department of Structural Biology, Department of Bioengineering Sciences, Research Group Microbiology, Vrije Universiteit Brussel, Pleinlaan 2, Brussels B-1050, Belgium
| | - Lumeng Ye
- VIB Department of Structural Biology, Department of Bioengineering Sciences, Research Group Microbiology, Vrije Universiteit Brussel, Pleinlaan 2, Brussels B-1050, Belgium
| | - Ahmed Amir Hassan
- VIB Department of Structural Biology, Department of Bioengineering Sciences, Research Group Microbiology, Vrije Universiteit Brussel, Pleinlaan 2, Brussels B-1050, Belgium
| | - Michael Craggs
- VIB Department of Structural Biology, Department of Bioengineering Sciences, Research Group Microbiology, Vrije Universiteit Brussel, Pleinlaan 2, Brussels B-1050, Belgium
| | - Cornelia Reimmann
- Département de Microbiologie Fondamentale, Université de Lausanne, Lausanne, Switzerland
| | - Mark S. Thomas
- Department of Infection and Immunity, School of Medicine, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, UK
| | - Pierre Cornelis
- VIB Department of Structural Biology, Department of Bioengineering Sciences, Research Group Microbiology, Vrije Universiteit Brussel, Pleinlaan 2, Brussels B-1050, Belgium
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Matthijs S, Ye L, Stijlemans B, Cornelis P, Bossuyt F, Roelants K. Low structural variation in the host-defense peptide repertoire of the dwarf clawed frog Hymenochirus boettgeri (Pipidae). PLoS One 2014; 9:e86339. [PMID: 24466037 PMCID: PMC3899252 DOI: 10.1371/journal.pone.0086339] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 12/06/2013] [Indexed: 02/05/2023] Open
Abstract
THE skin secretion of many amphibians contains peptides that are able to kill a broad range of microorganisms (antimicrobial peptides: AMPs) and potentially play a role in innate immune defense. Similar to the toxin arsenals of various animals, amphibian AMP repertoires typically show major structural variation, and previous studies have suggested that this may be the result of diversifying selection in adaptation to a diverse spectrum of pathogens. Here we report on transcriptome analyses that indicate a very different pattern in the dwarf clawed frog H. boettgeri. Our analyses reveal a diverse set of transcripts containing two to six tandem repeats, together encoding 14 distinct peptides. Five of these have recently been identified as AMPs, while three more are shown here to potently inhibit the growth of gram-negative bacteria, including multi-drug resistant strains of the medically important Pseudomonas aeruginosa. Although the number of predicted peptides is similar to the numbers of related AMPs in Xenopus and Silurana frog species, they show significantly lower structural variation. Selection analyses confirm that, in contrast to the AMPs of other amphibians, the H. boettgeri peptides did not evolve under diversifying selection. Instead, the low sequence variation among tandem repeats resulted from purifying selection, recent duplication and/or concerted gene evolution. Our study demonstrates that defense peptide repertoires of closely related taxa, after diverging from each other, may evolve under differential selective regimes, leading to contrasting patterns of structural diversity.
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Affiliation(s)
- Severine Matthijs
- Amphibian Evolution Lab, Biology Department, Vrije Universiteit Brussel, Brussels, Belgium
| | - Lumeng Ye
- Department of Bioengineering Sciences, Research Group of Microbiology and Vlaams Instituut voor Biotechnologie, Vrije Universiteit Brussel, Brussels, Belgium
| | - Benoit Stijlemans
- Unit of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Laboratory of Myeloid Cell Immunology, Vlaams Instituut voor Biotechnologie, Brussels, Belgium
| | - Pierre Cornelis
- Department of Bioengineering Sciences, Research Group of Microbiology and Vlaams Instituut voor Biotechnologie, Vrije Universiteit Brussel, Brussels, Belgium
| | - Franky Bossuyt
- Amphibian Evolution Lab, Biology Department, Vrije Universiteit Brussel, Brussels, Belgium
| | - Kim Roelants
- Amphibian Evolution Lab, Biology Department, Vrije Universiteit Brussel, Brussels, Belgium
- * E-mail:
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Gicquel G, Bouffartigues E, Bains M, Oxaran V, Rosay T, Lesouhaitier O, Connil N, Bazire A, Maillot O, Bénard M, Cornelis P, Hancock REW, Dufour A, Feuilloley MGJ, Orange N, Déziel E, Chevalier S. The extra-cytoplasmic function sigma factor sigX modulates biofilm and virulence-related properties in Pseudomonas aeruginosa. PLoS One 2013; 8:e80407. [PMID: 24260387 PMCID: PMC3832394 DOI: 10.1371/journal.pone.0080407] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Accepted: 10/02/2013] [Indexed: 11/23/2022] Open
Abstract
SigX, one of the 19 extra-cytoplasmic function sigma factors of P. aeruginosa, was only known to be involved in transcription of the gene encoding the major outer membrane protein OprF. We conducted a comparative transcriptomic study between the wildtype H103 strain and its sigX mutant PAOSX, which revealed a total of 307 differentially expressed genes that differed by more than 2 fold. Most dysregulated genes belonged to six functional classes, including the “chaperones and heat shock proteins”, “antibiotic resistance and susceptibility”, “energy metabolism”, “protein secretion/export apparatus”, and “secreted factors”, and “motility and attachment” classes. In this latter class, the large majority of the affected genes were down-regulated in the sigX mutant. In agreement with the array data, the sigX mutant was shown to demonstrate substantially reduced motility, attachment to biotic and abiotic surfaces, and biofilm formation. In addition, virulence towards the nematode Caenorhabditis elegans was reduced in the sigX mutant, suggesting that SigX is involved in virulence-related phenotypes.
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Affiliation(s)
- Gwendoline Gicquel
- Normandie Université, Université de Rouen, Laboratoire de Microbiologie Signaux et Micro-environnement EA 4312, Evreux, France
| | - Emeline Bouffartigues
- Normandie Université, Université de Rouen, Laboratoire de Microbiologie Signaux et Micro-environnement EA 4312, Evreux, France
| | - Manjeet Bains
- Centre for Microbal Diseases and Immunity Research, University of British Columbia, Vancouver, Canada
| | - Virginie Oxaran
- Normandie Université, Université de Rouen, Laboratoire de Microbiologie Signaux et Micro-environnement EA 4312, Evreux, France
| | - Thibaut Rosay
- Normandie Université, Université de Rouen, Laboratoire de Microbiologie Signaux et Micro-environnement EA 4312, Evreux, France
| | - Olivier Lesouhaitier
- Normandie Université, Université de Rouen, Laboratoire de Microbiologie Signaux et Micro-environnement EA 4312, Evreux, France
| | - Nathalie Connil
- Normandie Université, Université de Rouen, Laboratoire de Microbiologie Signaux et Micro-environnement EA 4312, Evreux, France
| | - Alexis Bazire
- IUEM, Université de Bretagne-Sud (UEB), Laboratoire de Biotechnologie et Chimie Marines EA 3884, Lorient, France
| | - Olivier Maillot
- Normandie Université, Université de Rouen, Laboratoire de Microbiologie Signaux et Micro-environnement EA 4312, Evreux, France
| | - Magalie Bénard
- Cell Imaging Platform of Normandy (PRIMACEN), IRIB, Faculty of Sciences, University of Rouen, Mont-Saint-Aignan, France
| | - Pierre Cornelis
- Department of Bioengineering Sciences, Research group Microbiology, VIB Department of Structural Biology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Robert E. W. Hancock
- Centre for Microbal Diseases and Immunity Research, University of British Columbia, Vancouver, Canada
| | - Alain Dufour
- IUEM, Université de Bretagne-Sud (UEB), Laboratoire de Biotechnologie et Chimie Marines EA 3884, Lorient, France
| | - Marc G. J. Feuilloley
- Normandie Université, Université de Rouen, Laboratoire de Microbiologie Signaux et Micro-environnement EA 4312, Evreux, France
| | - Nicole Orange
- Normandie Université, Université de Rouen, Laboratoire de Microbiologie Signaux et Micro-environnement EA 4312, Evreux, France
| | - Eric Déziel
- INRS-Institut Armand-Frappier, Laval, Québec, Canada
| | - Sylvie Chevalier
- Normandie Université, Université de Rouen, Laboratoire de Microbiologie Signaux et Micro-environnement EA 4312, Evreux, France
- * E-mail:
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Cornelis P, Dingemans J. Pseudomonas aeruginosa adapts its iron uptake strategies in function of the type of infections. Front Cell Infect Microbiol 2013; 3:75. [PMID: 24294593 PMCID: PMC3827675 DOI: 10.3389/fcimb.2013.00075] [Citation(s) in RCA: 228] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 10/22/2013] [Indexed: 11/13/2022] Open
Abstract
Pseudomonas aeruginosa is a Gram-negative γ-Proteobacterium which is known for its capacity to colonize various niches, including some invertebrate and vertebrate hosts, making it one of the most frequent bacteria causing opportunistic infections. P. aeruginosa is able to cause acute as well as chronic infections and it uses different colonization and virulence factors to do so. Infections range from septicemia, urinary infections, burn wound colonization, and chronic colonization of the lungs of cystic fibrosis patients. Like the vast majority of organisms, P. aeruginosa needs iron to sustain growth. P. aeruginosa utilizes different strategies to take up iron, depending on the type of infection it causes. Two siderophores are produced by this bacterium, pyoverdine and pyochelin, characterized by high and low affinities for iron respectively. P. aeruginosa is also able to utilize different siderophores from other microorganisms (siderophore piracy). It can also take up heme from hemoproteins via two different systems. Under microaerobic or anaerobic conditions, P. aeruginosa is also able to take up ferrous iron via its Feo system using redox-cycling phenazines. Depending on the type of infection, P. aeruginosa can therefore adapt by switching from one iron uptake system to another as we will describe in this short review.
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Affiliation(s)
- Pierre Cornelis
- Research Group Microbiology, Department of Bioengineering Sciences, Vrije Universiteit Brussel Brussels, Belgium ; Department Structural Biology, VIB, Vrije Universiteit Brussel Brussels, Belgium
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Garcia-Armisen T, Anzil A, Cornelis P, Chevreuil M, Servais P. Identification of antimicrobial resistant bacteria in rivers: insights into the cultivation bias. Water Res 2013; 47:4938-4947. [PMID: 23863386 DOI: 10.1016/j.watres.2013.05.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 04/16/2013] [Accepted: 05/20/2013] [Indexed: 06/02/2023]
Abstract
In the present study, the antimicrobial resistant (AR) bacteria were quantified and identified in different river samples using in parallel a culture-based approach and a culture-independent one. The objective was to evaluate the importance of the cultivation bias when studying antimicrobial resistance among environmental bacteria. Three different river samples covering a gradient of anthropic influence were tested and three different antimicrobial compounds were used as selective agents: amoxicillin, tetracycline and sulfamethoxazole. From a quantitative point of view, our results highlight the importance of the culture media used, as for the same sample and the same selective agent significant differences were observed in the counts of culturable AR bacteria depending on the culture media used. The identification of AR bacteria through culture or culture-independent methods put on evidence AR bacterial communities that differ dramatically: γ-proteobacteria and more specifically Aeromonadaceae dominated among the isolates while β-proteobacteria (Comamonadaceae), dominated among the sequences obtained without culture. Altogether these results highlight the necessity to develop a methodological consensus preferably without culture, to approach this important topic in the coming years.
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Affiliation(s)
- Tamara Garcia-Armisen
- Ecologie des Systèmes Aquatiques, Université Libre de Bruxelles, Campus de la Plaine, CP 221, Boulevard du Triomphe, 1050 Brussels, Belgium.
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Vercammen K, Garcia-Armisen T, Goeders N, Van Melderen L, Bodilis J, Cornelis P. Identification of a metagenomic gene cluster containing a new class A beta-lactamase and toxin-antitoxin systems. Microbiologyopen 2013; 2:674-83. [PMID: 23873667 PMCID: PMC3948609 DOI: 10.1002/mbo3.104] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 05/15/2013] [Accepted: 06/06/2013] [Indexed: 11/10/2022] Open
Abstract
Several reports mention the presence of antibiotic resistance genes in natural and polluted environments, but many studies are based on their detection via polymerase chain reaction (PCR amplification of known genes and not on an activity screening. We constructed a metagenomic fosmid bank from DNA isolated from a polluted river in Brussels, Belgium, the Zenne. A total of 120,000 clones were pooled and plated directly on solid media containing different antibiotics. Several clones were isolated which could grow in the presence of ampicillin. The DNA from several clones was extracted and subjected to restriction analysis and, based on their restriction pattern, two different clones were found. One of the clones was selected for further study as it showed a higher level of resistance to different β-lactams antibiotics (ticarcilline and ceftazidime). To find out which gene is responsible for the resistance, an in vitro transposon mutagenesis was performed and clones having lost the resistance phenotype were analyzed via inverse PCR amplification. Several clones had an insert in a gene encoding a new type of β-lactamase. The amplified fosmid DNA was fully sequenced revealing an insert of 41 kb containing 39 open reading frames (ORFs). Transposon insertions inactivating the resistance to β-lactams were also found in the ORF upstream of the blaA gene, encoding an aminotransferase, suggesting a polar effect on the transcription of the gene downstream. In addition, other genes were found such as histidine biosynthesis genes, which were found to be scattered on the insert, a relA/spoT gene, and genes belonging to type II toxin–antitoxin system. This predicted system was experimentally validated in Escherichia coli using an inducible expression system.
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Affiliation(s)
- Ken Vercammen
- Department of Bioengineering Sciences, Research group Microbiology and VIB Department of Structural Biology, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium
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Willekens J, Dingemans J, Eyns H, Crabbé A, Cornelis P, Malfroot A. 105 Adaptation of Pseudomonas aeruginosa in the CF host: Link between laboratory findings and the clinic? J Cyst Fibros 2013. [DOI: 10.1016/s1569-1993(13)60247-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Dingemans J, Craggs M, Bilocq F, Willekens J, Eyns H, Crabbé A, De Vos D, Pirnay JP, Malfroot A, Cornelis P. 135 The use of rep-PCR (Diversilab, bioMerieux) in combination with multiplex PCR (targeting virulence genes) reveals the transmission of Pseudomonas aeruginosa isolates among cystic fibrosis patients in a hospital background. J Cyst Fibros 2013. [DOI: 10.1016/s1569-1993(13)60277-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Matthijs S, Coorevits A, Gebrekidan TT, Tricot C, Wauven CV, Pirnay JP, De Vos P, Cornelis P. Evaluation of oprI and oprL genes as molecular markers for the genus Pseudomonas and their use in studying the biodiversity of a small Belgian River. Res Microbiol 2013; 164:254-61. [DOI: 10.1016/j.resmic.2012.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Accepted: 11/26/2012] [Indexed: 10/27/2022]
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López-Berges MS, Turrà D, Capilla J, Schafferer L, Matthijs S, Jöchl C, Cornelis P, Guarro J, Haas H, Di Pietro A. Iron competition in fungus-plant interactions: the battle takes place in the rhizosphere. Plant Signal Behav 2013; 8:e23012. [PMID: 23299422 PMCID: PMC3656999 DOI: 10.4161/psb.23012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 11/27/2012] [Accepted: 11/27/2012] [Indexed: 05/19/2023]
Abstract
Soilborne fungal pathogens are highly persistent and provoke important crop losses. During saprophytic and infectious stages in the soil, these organisms face situations of nutrient limitation and lack of essential elements, such as iron. We investigated the role of the bZIP transcription factor HapX as a central regulator of iron homeostasis and virulence in the vascular wilt fungus Fusarium oxysporum. This root-infecting plant pathogen attacks more than hundred different crops and is an emerging human opportunistic invader. Although iron uptake remains unaffected in a strain lacking HapX, de-repression of genes implicated in iron-consuming processes such as respiration, amino acid metabolism, TCA cycle and heme biosynthesis lead to severely impaired growth under iron-limiting conditions. HapX is required for full virulence of F. oxysporum in tomato plants and essential for infection in immunodepressed mice. Virulence attenuation of the ΔhapX strain on tomato plants is more pronounced by co-inoculation of roots with the biocontrol strain Pseudomonas putida KT2440, but not with a mutant deficient in siderophores production. These results demonstrate that HapX is required for iron competition of F. oxysporum in the tomato rhizosphere and establish a conserved role for HapX-mediated iron homeostasis in fungal infection of plants and mammals.
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Affiliation(s)
- Manuel S. López-Berges
- Departamento de Genética; Universidad de Córdoba; Córdoba, Spain
- Campus de Excelencia Internacional Agroalimentario (ceiA3); Córdoba, Spain
| | - David Turrà
- Departamento de Genética; Universidad de Córdoba; Córdoba, Spain
- Campus de Excelencia Internacional Agroalimentario (ceiA3); Córdoba, Spain
| | - Javier Capilla
- Unitat de Microbiologia; Facultat de Medicina i Ciències de la Salut; Institut d’Investigació Sanitària Pere Virgili; Universitat Rovira i Virgili; Reus, Spain
| | - Lukas Schafferer
- Division of Molecular Biology/Biocenter; Innsbruck Medical University; Innsbruck, Austria
| | - Sandra Matthijs
- Institut de Recherches Microbiologiques Jean-Marie Wiame; Brussels, Belgium
| | - Christoph Jöchl
- Division of Molecular Biology/Biocenter; Innsbruck Medical University; Innsbruck, Austria
| | - Pierre Cornelis
- Department of Bioengineering Sciences; Research Group Microbiology and Flanders Institute for Biotechnology; Department of Structural Biology; Vrije Universiteit Brussel; Brussels, Belgium
| | - Josep Guarro
- Unitat de Microbiologia; Facultat de Medicina i Ciències de la Salut; Institut d’Investigació Sanitària Pere Virgili; Universitat Rovira i Virgili; Reus, Spain
| | - Hubertus Haas
- Division of Molecular Biology/Biocenter; Innsbruck Medical University; Innsbruck, Austria
| | - Antonio Di Pietro
- Departamento de Genética; Universidad de Córdoba; Córdoba, Spain
- Unitat de Microbiologia; Facultat de Medicina i Ciències de la Salut; Institut d’Investigació Sanitària Pere Virgili; Universitat Rovira i Virgili; Reus, Spain
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Abstract
Bacteria depend upon iron as a vital cofactor that enables a wide range of key metabolic activities. Bacteria must therefore ensure a balanced supply of this essential metal. To do so, they invest considerable resourse into its acquisition and employ elaborate control mechanisms to eleviate both iron-induced toxitiy as well as iron deficiency. This chapter describes the processes that bacteria engage in maintaining iron homeostasis. The focus is Escherichia coli, as this bacterium provides a well studied example. A summary of the current status of understanding of iron management at the 'omics' level is also presented.
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Affiliation(s)
- Simon Andrews
- The School of Biological Sciences, The University of Reading, Whiteknights, Reading, RG6 6AJ, UK,
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Crabbé A, Leroy B, Wattiez R, Aertsen A, Leys N, Cornelis P, Van Houdt R. Differential proteomics and physiology of Pseudomonas putida KT2440 under filament-inducing conditions. BMC Microbiol 2012. [PMID: 23186381 PMCID: PMC3538555 DOI: 10.1186/1471-2180-12-282] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Background Pseudomonas putida exerts a filamentous phenotype in response to environmental stress conditions that are encountered during its natural life cycle. This study assessed whether P. putida filamentation could confer survival advantages. Filamentation of P. putida was induced through culturing at low shaking speed and was compared to culturing in high shaking speed conditions, after which whole proteomic analysis and stress exposure assays were performed. Results P. putida grown in filament-inducing conditions showed increased resistance to heat and saline stressors compared to non-filamented cultures. Proteomic analysis showed a significant metabolic change and a pronounced induction of the heat shock protein IbpA and recombinase RecA in filament-inducing conditions. Our data further indicated that the associated heat shock resistance, but not filamentation, was dependent of RecA. Conclusions This study provides insights into the altered metabolism of P. putida in filament-inducing conditions, and indicates that the formation of filaments could potentially be utilized by P. putida as a survival strategy in its hostile, recurrently changing habitat.
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Affiliation(s)
- Aurélie Crabbé
- Unit of Microbiology, Expert Group Molecular and Cellular Biology, Institute for Environment, Health and Safety, Belgian Nuclear Research Centre (SCK CEN), Mol, Belgium
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Stenuit B, Lamblin G, Cornelis P, Agathos SN. Aerobic denitration of 2,4,6-trinitrotoluene in the presence of phenazine compounds and reduced pyridine nucleotides. Environ Sci Technol 2012; 46:10605-10613. [PMID: 22881832 DOI: 10.1021/es302046h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Phenazine-containing spent culture supernatants of Pseudomonas aeruginosa concentrated with a C18 solid-phase extraction cartridge initiate NAD(P)H-dependent denitration of 2,4,6-trinitrotoluene (TNT). In this study, TNT denitration was investigated under aerobic conditions using two phenazine secondary metabolites excreted by P. aeruginosa, pyocyanin (Py) and its precursor phenazine-1- carboxylic acid (PCA), and two chemically synthesized pyocyanin analogs, phenazine methosulfate (PMS+) and phenazine ethosulfate (PES+). The biomimetic Py/NAD(P)H/O2 system was characterized and found to extensively denitrate TNT in unbuffered aqueous solution with minor production of toxic amino aromatic derivatives. To a much lesser extent, TNT denitration was also observed with PMS+ and PES+ in the presence of NAD(P)H. No TNT denitration was detected with the biomimetic PCA/NAD(P)H/O2 system. Electron paramagnetic resonance (EPR) spectroscopy analysis of the biomimetic Py/NAD(P)H/O2 system revealed the generation of superoxide radical anions (O2 •−). In vitro TNT degradation experiments in the presence of specific inhibitors of reactive oxygen species suggest a nucleophilic attack of superoxide radical anion followed by TNT denitration through an as yet unknown mechanism. The results of this research confirm the high functional versatility of the redox-active metabolite pyocyanin and the susceptibility of aromatic compounds bearing electron withdrawing substituents, such as nitro groups, to superoxide-driven nucleophilic attack.
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Affiliation(s)
- Ben Stenuit
- Earth and Life Institute, Laboratory of Bioengineering, Université Catholique de Louvain, B-1348 Louvain-la-Neuve, Belgium
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Garcia-Armisen T, Vercammen K, Rimaux T, Vrancken G, Vuyst LD, Cornelis P. Identification of a five-oxidoreductase-gene cluster from Acetobacter pasteurianus conferring ethanol-dependent acidification in Escherichia coli. Microbiologyopen 2012; 1:25-32. [PMID: 22950009 PMCID: PMC3426403 DOI: 10.1002/mbo3.4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 11/07/2011] [Indexed: 11/25/2022] Open
Abstract
Acetobacter pasteurianus, a Gram-negative bacterium belonging to the α-divison of Proteobacteria, produces acetic acid through ethanol oxidation. A genomic bank of A. pasteurianus 386B DNA was cloned in the low-copy cosmid pRG930Cm vector and the resulting clones were screened for the production of protease using the skimmed-milk agar assay whereby a clearing zone around the inoculated spots indicates casein degradation. Several positive clones were selected and restriction analysis revealed that many contained the same inserts. One clone was further analyzed and the cosmid DNA subjected to in vitro transposon insertion. After electroporation, several clones having lost the capacity to cause casein degradation were isolated and the sequence of the transposon-flanking regions analyzed. The majority of insertions mapped to one gene encoding an NAD(P)+-dependent aldehyde dehydrogenase (ALDH) of the PNTB superfamily, whereas one insert was found upstream in a gene encoding an ethanol dehydrogenase. Addition of phenol red to the medium confirmed the ethanol-dependent acidification around the inoculated spots of the clones without transposon insertion, suggesting that casein degradation is due to the production of acetic acid as a result of the combined activities of the alcohol dehydrogenase and ALDH. Quantitative data and pH measurements confirmed a significant acidification, and the presence of acetic acid.
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Affiliation(s)
- Tamara Garcia-Armisen
- Department of Bioengineering Sciences, Research group Microbiology, VIB Department of Structural Biology Vrije Universiteit BrusselPleinlaan 2 1050Brussels Belgium
| | - Ken Vercammen
- Department of Bioengineering Sciences, Research group Microbiology, VIB Department of Structural Biology Vrije Universiteit BrusselPleinlaan 2 1050Brussels Belgium
| | - Tom Rimaux
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bio-engineering Sciences, Vrije Universiteit BrusselBrussels, Belgium
| | - Gino Vrancken
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bio-engineering Sciences, Vrije Universiteit BrusselBrussels, Belgium
| | - Luc De Vuyst
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bio-engineering Sciences, Vrije Universiteit BrusselBrussels, Belgium
| | - Pierre Cornelis
- Department of Bioengineering Sciences, Research group Microbiology, VIB Department of Structural Biology Vrije Universiteit BrusselPleinlaan 2 1050Brussels Belgium
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