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Di Maio A, Olleik H, Courvoisier-Dezord E, Guillier S, Neulat-Ripoll F, Haudecoeur R, Bolla JM, Casanova M, Cavalier JF, Canaan S, Pique V, Charmasson Y, Baydoun E, Hijazi A, Perrier J, Maresca M, Robin M. Design and Synthesis of Novel Amino and Acetamidoaurones with Antimicrobial Activities. Antibiotics (Basel) 2024; 13:300. [PMID: 38666976 PMCID: PMC11047580 DOI: 10.3390/antibiotics13040300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/19/2024] [Accepted: 03/25/2024] [Indexed: 04/29/2024] Open
Abstract
The development of new and effective antimicrobial compounds is urgent due to the emergence of resistant bacteria. Natural plant flavonoids are known to be effective molecules, but their activity and selectivity have to be increased. Based on previous aurone potency, we designed new aurone derivatives bearing acetamido and amino groups at the position 5 of the A ring and managing various monosubstitutions at the B ring. A series of 31 new aurone derivatives were first evaluated for their antimicrobial activity with five derivatives being the most active (compounds 10, 12, 15, 16, and 20). The evaluation of their cytotoxicity on human cells and of their therapeutic index (TI) showed that compounds 10 and 20 had the highest TI. Finally, screening against a large panel of pathogens confirmed that compounds 10 and 20 possess large spectrum antimicrobial activity, including on bioweapon BSL3 strains, with MIC values as low as 0.78 µM. These results demonstrate that 5-acetamidoaurones are far more active and safer compared with 5-aminoaurones, and that benzyloxy and isopropyl substitutions at the B ring are the most promising strategy in the exploration of new antimicrobial aurones.
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Affiliation(s)
- Attilio Di Maio
- Aix Marseille University, University Avignon, CNRS, IRD, IMBE, 13013 Marseille, France; (A.D.M.); (V.P.)
| | - Hamza Olleik
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France (E.C.-D.); (Y.C.); (J.P.)
| | - Elise Courvoisier-Dezord
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France (E.C.-D.); (Y.C.); (J.P.)
| | - Sophie Guillier
- Aix Marseille University, INSERM, SSA, MCT, 13385 Marseille, France; (S.G.); (F.N.-R.); (J.-M.B.)
| | - Fabienne Neulat-Ripoll
- Aix Marseille University, INSERM, SSA, MCT, 13385 Marseille, France; (S.G.); (F.N.-R.); (J.-M.B.)
| | | | - Jean-Michel Bolla
- Aix Marseille University, INSERM, SSA, MCT, 13385 Marseille, France; (S.G.); (F.N.-R.); (J.-M.B.)
| | - Magali Casanova
- Aix-Marseille University, CNRS, LISM UMR7255, IMM FR3479, 13009 Marseille, France; (M.C.); (J.-F.C.); (S.C.)
| | - Jean-François Cavalier
- Aix-Marseille University, CNRS, LISM UMR7255, IMM FR3479, 13009 Marseille, France; (M.C.); (J.-F.C.); (S.C.)
| | - Stéphane Canaan
- Aix-Marseille University, CNRS, LISM UMR7255, IMM FR3479, 13009 Marseille, France; (M.C.); (J.-F.C.); (S.C.)
| | - Valérie Pique
- Aix Marseille University, University Avignon, CNRS, IRD, IMBE, 13013 Marseille, France; (A.D.M.); (V.P.)
| | - Yolande Charmasson
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France (E.C.-D.); (Y.C.); (J.P.)
| | - Elias Baydoun
- Department of Biology, American University of Beirut, Beirut 1107, Lebanon;
| | - Akram Hijazi
- Plateforme de Recherche et D’analyse en Sciences de L’environnement (EDST-PRASE), Beirut 1107, Lebanon;
| | - Josette Perrier
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France (E.C.-D.); (Y.C.); (J.P.)
| | - Marc Maresca
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France (E.C.-D.); (Y.C.); (J.P.)
| | - Maxime Robin
- Aix Marseille University, University Avignon, CNRS, IRD, IMBE, 13013 Marseille, France; (A.D.M.); (V.P.)
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Patil M, Serhii K, Garzino F, Gobert Q, Giorgio S, Raimundo JM, Bolla JM, Camplo M. Synthesis and antimicrobial testing of 5-fluorouracil derivatives. Arch Pharm (Weinheim) 2023:e2300103. [PMID: 37199697 DOI: 10.1002/ardp.202300103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/10/2023] [Accepted: 04/11/2023] [Indexed: 05/19/2023]
Abstract
Antibiotic resistance has increased the demand for novel treatments against multidrug-resistant microorganisms. In the research literature, 5-fluorouracil (5-FU) was proposed as an alternative due to its intrinsic antibacterial property. However, given its toxicity profile at high doses, its use in antibacterial therapy is dubious. In the quest for improving the efficacy of 5-FU, the present study intends to synthesise 5-FU derivatives and assess their susceptibility and mechanism against pathogenic bacteria. It was found that the compounds having tri-hexylphosphonium substitution on both nitrogen groups of 5-FU (6a, 6b and 6c) had considerable activity against both Gram-positive and Gram-negative bacteria. Among the active compounds, those with an asymmetric linker group 6c were found to have higher antibacterial efficacy. However, no conclusive efflux inhibition activity was found. As elucidated by electron microscopy studies, these self-assembling active phosphonium-based 5-FU derivatives caused considerable septal damage and cytosolic alterations in Staphylococcus aureus cells. In Escherichia coli, these compounds triggered plasmolysis. Interestingly, the minimal inhibitory concentration (MIC) of the most potent 5-FU derivative 6c remained constant, regardless of the bacteria's resistance profile. Further analysis revealed that compound 6c generated significant alterations in membrane permeabilization and depolarization in S. aureus and E. coli cells at the MIC. Compound 6c was found to substantially impede bacterial motility, suggesting its importance in regulating bacterial pathogenicity. Additionally, the nonhaemolytic activity of 6c suggested that it could be a potential therapeutic option for treating multidrug-resistant bacterial infections.
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Affiliation(s)
- Mrunal Patil
- Aix Marseille Université, INSERM, SSA, MCT, Marseille, France
| | - Krykun Serhii
- Aix Marseille Université, CNRS, CINaM UMR 7325, Campus de Luminy, Marseille, France
| | - Frédéric Garzino
- Aix Marseille Université, CNRS, CINaM UMR 7325, Campus de Luminy, Marseille, France
| | - Quentin Gobert
- Aix Marseille Université, CNRS, CINaM UMR 7325, Campus de Luminy, Marseille, France
| | - Suzanne Giorgio
- Aix Marseille Université, CNRS, CINaM UMR 7325, Campus de Luminy, Marseille, France
| | - Jean-Manuel Raimundo
- Aix Marseille Université, CNRS, CINaM UMR 7325, Campus de Luminy, Marseille, France
| | | | - Michel Camplo
- Aix Marseille Université, CNRS, CINaM UMR 7325, Campus de Luminy, Marseille, France
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Wang G, Brunel JM, Preusse M, Mozaheb N, Willger SD, Larrouy-Maumus G, Baatsen P, Häussler S, Bolla JM, Van Bambeke F. The membrane-active polyaminoisoprenyl compound NV716 re-sensitizes Pseudomonas aeruginosa to antibiotics and reduces bacterial virulence. Commun Biol 2022; 5:871. [PMID: 36008485 PMCID: PMC9411590 DOI: 10.1038/s42003-022-03836-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [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: 01/03/2022] [Accepted: 08/11/2022] [Indexed: 11/09/2022] Open
Abstract
Pseudomonas aeruginosa is intrinsically resistant to many antibiotics due to the impermeability of its outer membrane and to the constitutive expression of efflux pumps. Here, we show that the polyaminoisoprenyl compound NV716 at sub-MIC concentrations re-sensitizes P. aeruginosa to abandoned antibiotics by binding to the lipopolysaccharides (LPS) of the outer membrane, permeabilizing this membrane and increasing antibiotic accumulation inside the bacteria. It also prevents selection of resistance to antibiotics and increases their activity against biofilms. No stable resistance could be selected to NV716-itself after serial passages with subinhibitory concentrations, but the transcriptome of the resulting daughter cells shows an upregulation of genes involved in the synthesis of lipid A and LPS, and a downregulation of quorum sensing-related genes. Accordingly, NV716 also reduces motility, virulence factors production, and biofilm formation. NV716 shows a unique and highly promising profile of activity when used alone or in combination with antibiotics against P. aeruginosa, combining in a single molecule anti-virulence and potentiator effects. Additional work is required to more thoroughly understand the various functions of NV716. The polyaminoisoprenyl compound NV716 re-sensitizes Pseudomonas aeruginosa to antibiotics through permeabilizing the outer membrane and increases the activity of antibiotics on biofilms.
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Affiliation(s)
- Gang Wang
- Pharmacologie cellulaire et moléculaire, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
| | - Jean-Michel Brunel
- Aix Marseille Université, INSERM, SSA, Membranes et Cibles thérapeutiques (MCT), Marseille, France
| | - Matthias Preusse
- Department of Molecular Bacteriology, Helmoltz Centre for Infection Research, Braunschweig, Germany
| | - Negar Mozaheb
- Pharmacologie cellulaire et moléculaire, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
| | - Sven D Willger
- Department of Molecular Bacteriology, Helmoltz Centre for Infection Research, Braunschweig, Germany.,Department of Molecular Bacteriology, Twincore, Hannover, Germany.,Institute for Medical Biometry and Bioinformatics, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Gerald Larrouy-Maumus
- Department of Life Sciences, Faculty of Natural Sciences, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
| | - Pieter Baatsen
- Electron Microscopy Platform & Bio Imaging Core, VIB & KULeuven Center for Brain & Disease Research, KULeuven, Leuven, Belgium
| | - Susanne Häussler
- Department of Molecular Bacteriology, Helmoltz Centre for Infection Research, Braunschweig, Germany.,Department of Molecular Bacteriology, Twincore, Hannover, Germany.,Department of Clinical Microbiology, Rigshospitalet, Copenhagen, Denmark.,Cluster of Excellence RESIST, Hannover Medical School, Hannover, Germany
| | - Jean-Michel Bolla
- Aix Marseille Université, INSERM, SSA, Membranes et Cibles thérapeutiques (MCT), Marseille, France
| | - Françoise Van Bambeke
- Pharmacologie cellulaire et moléculaire, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium.
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Boucherit H, Chikhi A, Bensegueni A, Merzoug A, Bolla JM. The Research of New Inhibitors of Bacterial Methionine Aminopeptidase by Structure Based Virtual Screening Approach of ZINC DATABASE and In Vitro Validation. Curr Comput Aided Drug Des 2021; 16:389-401. [PMID: 31244429 DOI: 10.2174/1573409915666190617165643] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/26/2019] [Accepted: 05/06/2019] [Indexed: 01/13/2023]
Abstract
BACKGROUND The great emergence of multi-resistant bacterial strains and the low renewal of antibiotics molecules are leading human and veterinary medicine to certain therapeutic impasses. Therefore, there is an urgent need to find new therapeutic alternatives including new molecules in the current treatments of infectious diseases. Methionine aminopeptidase (MetAP) is a promising target for developing new antibiotics because it is essential for bacterial survival. OBJECTIVE To screen for potential MetAP inhibitors by in silico virtual screening of the ZINC database and evaluate the best potential lead molecules by in vitro studies. METHODS We have considered 200,000 compounds from the ZINC database for virtual screening with FlexX software to identify potential inhibitors against bacterial MetAP. Nine chemical compounds of the top hits predicted were purchased and evaluated in vitro. The antimicrobial activity of each inhibitor of MetAP was tested by the disc-diffusion assay against one Gram-positive (Staphylococcus aureus) and two Gram-negative (Escherichia coli & Pseudomonas aeruginosa) bacteria. Among the studied compounds, compounds ZINC04785369 and ZINC03307916 showed promising antibacterial activity. To further characterize their efficacy, the minimum inhibitory concentration was determined for each compound by the microdilution method which showed significant results. RESULTS These results suggest compounds ZINC04785369 and ZINC03307916 as promising molecules for developing MetAP inhibitors. CONCLUSION Furthermore, they could therefore serve as lead molecules for further chemical modifications to obtain clinically useful antibacterial agents.
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Affiliation(s)
- Hanane Boucherit
- Laboratory of Applied Biochemistry, Department of Biochemistry and Cellular and Molecular Biology, Faculty of Natural and Life Sciences, Mentouri Brothers University, Constantine 1, Algeria
| | - Abdelouahab Chikhi
- Laboratory of Applied Biochemistry, Department of Biochemistry and Cellular and Molecular Biology, Faculty of Natural and Life Sciences, Mentouri Brothers University, Constantine 1, Algeria
| | - Abderrahmane Bensegueni
- Laboratory of Applied Biochemistry, Department of Biochemistry and Cellular and Molecular Biology, Faculty of Natural and Life Sciences, Mentouri Brothers University, Constantine 1, Algeria
| | - Amina Merzoug
- Laboratory of Applied Biochemistry, Department of Biochemistry and Cellular and Molecular Biology, Faculty of Natural and Life Sciences, Mentouri Brothers University, Constantine 1, Algeria
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Abstract
Introduction:
An attractive antibiotic-adjuvant strategy consisting of the design and
synthesis of polyaminoisoprenyl molecules able to restore the antibiotic activity of tetracycline antibiotics
against resistant Pseudomonas aeruginosa bacterial strains has been developed.
Methods:
These chemo-sensitizers are readily prepared from geraniol and farnesol in an efficient
two steps synthesis with good to moderate yields varying from 38 to 64% and leading to a significant
decrease in antibiotic resistance.
Results:
Thus, the influence of the nature of the tetracycline antibiotic used as well as the structure
of the polyaminoisoprenyl derivatives involved in the outcome of the antibiotic-adjuvant combination
against P. aeruginosa resistance to tetracyclines were investigated.
Conclusion:
Additionally, our data suggested that their mechanism of action is closely associated
with the increase of the outer-membrane permeability.
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Affiliation(s)
- Azza Troudi
- Aix Marseille Univ, INSERM, SSA, MCT, 13385 Marseille, France
| | - Hana Douafer
- Aix Marseille Univ, INSERM, SSA, MCT, 13385 Marseille, France
| | | | - Naouel Klibi
- Laboratory of Microorganisms and Active Biomolecules, Department of Biology, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Jean M. Brunel
- Aix Marseille Univ, INSERM, SSA, MCT, 13385 Marseille, France
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Kaczor A, Witek K, Podlewska S, Sinou V, Czekajewska J, Żesławska E, Doroz-Płonka A, Lubelska A, Latacz G, Nitek W, Bischoff M, Alibert S, Pagès JM, Jacob C, Karczewska E, Bolla JM, Handzlik J. Molecular Insights into an Antibiotic Enhancer Action of New Morpholine-Containing 5-Arylideneimidazolones in the Fight against MDR Bacteria. Int J Mol Sci 2021; 22:ijms22042062. [PMID: 33669790 PMCID: PMC7922564 DOI: 10.3390/ijms22042062] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/11/2021] [Accepted: 02/13/2021] [Indexed: 01/21/2023] Open
Abstract
In the search for an effective strategy to overcome antimicrobial resistance, a series of new morpholine-containing 5-arylideneimidazolones differing within either the amine moiety or at position five of imidazolones was explored as potential antibiotic adjuvants against Gram-positive and Gram-negative bacteria. Compounds (7–23) were tested for oxacillin adjuvant properties in the Methicillin-susceptible S. aureus (MSSA) strain ATCC 25923 and Methicillin-resistant S. aureus MRSA 19449. Compounds 14–16 were tested additionally in combination with various antibiotics. Molecular modelling was performed to assess potential mechanism of action. Microdilution and real-time efflux (RTE) assays were carried out in strains of K. aerogenes to determine the potential of compounds 7–23 to block the multidrug efflux pump AcrAB-TolC. Drug-like properties were determined experimentally. Two compounds (10, 15) containing non-condensed aromatic rings, significantly reduced oxacillin MICs in MRSA 19449, while 15 additionally enhanced the effectiveness of ampicillin. Results of molecular modelling confirmed the interaction with the allosteric site of PBP2a as a probable MDR-reversing mechanism. In RTE, the compounds inhibited AcrAB-TolC even to 90% (19). The 4-phenylbenzylidene derivative (15) demonstrated significant MDR-reversal “dual action” for β-lactam antibiotics in MRSA and inhibited AcrAB-TolC in K. aerogenes. 15 displayed also satisfied solubility and safety towards CYP3A4 in vitro.
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Affiliation(s)
- Aneta Kaczor
- Department of Technology and Biotechnology of Drugs, Jagiellonian University, Medical College, ul. Medyczna 9, 30-688 Krakow, Poland; (A.K.); (K.W.); (S.P.); (A.D.-P.); (A.L.); (G.L.)
| | - Karolina Witek
- Department of Technology and Biotechnology of Drugs, Jagiellonian University, Medical College, ul. Medyczna 9, 30-688 Krakow, Poland; (A.K.); (K.W.); (S.P.); (A.D.-P.); (A.L.); (G.L.)
- Department of Pharmaceutical Microbiology, Jagiellonian University, Medical College, ul. Medyczna 9, 30-688 Krakow, Poland; (J.C.); (E.K.)
- UMR_MD1, U-1261, Aix Marseille Univ, INSERM, SSA, MCT, Faculté de Pharmacie, 27 Bd Jean Moulin, 13005 Marseille, France; (V.S.); (S.A.); (J.-M.P.); (J.-M.B.)
- Institute for Medical Microbiology and Hygiene, Saarland University, D-66421 Homburg/Saar, Germany;
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, Campus B 2.1, D-66123 Saarbruecken, Germany;
| | - Sabina Podlewska
- Department of Technology and Biotechnology of Drugs, Jagiellonian University, Medical College, ul. Medyczna 9, 30-688 Krakow, Poland; (A.K.); (K.W.); (S.P.); (A.D.-P.); (A.L.); (G.L.)
- Maj Institute of Pharmacology, Polish Academy of Sciences, Department of Medicinal Chemistry, ul. Smętna 12, 31-343 Krakow, Poland
| | - Veronique Sinou
- UMR_MD1, U-1261, Aix Marseille Univ, INSERM, SSA, MCT, Faculté de Pharmacie, 27 Bd Jean Moulin, 13005 Marseille, France; (V.S.); (S.A.); (J.-M.P.); (J.-M.B.)
| | - Joanna Czekajewska
- Department of Pharmaceutical Microbiology, Jagiellonian University, Medical College, ul. Medyczna 9, 30-688 Krakow, Poland; (J.C.); (E.K.)
| | - Ewa Żesławska
- Pedagogical University of Cracow, Institute of Biology, ul. Podchorążych 2, 30-084 Krakow, Poland;
| | - Agata Doroz-Płonka
- Department of Technology and Biotechnology of Drugs, Jagiellonian University, Medical College, ul. Medyczna 9, 30-688 Krakow, Poland; (A.K.); (K.W.); (S.P.); (A.D.-P.); (A.L.); (G.L.)
| | - Annamaria Lubelska
- Department of Technology and Biotechnology of Drugs, Jagiellonian University, Medical College, ul. Medyczna 9, 30-688 Krakow, Poland; (A.K.); (K.W.); (S.P.); (A.D.-P.); (A.L.); (G.L.)
| | - Gniewomir Latacz
- Department of Technology and Biotechnology of Drugs, Jagiellonian University, Medical College, ul. Medyczna 9, 30-688 Krakow, Poland; (A.K.); (K.W.); (S.P.); (A.D.-P.); (A.L.); (G.L.)
| | - Wojciech Nitek
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Krakow, Poland;
| | - Markus Bischoff
- Institute for Medical Microbiology and Hygiene, Saarland University, D-66421 Homburg/Saar, Germany;
| | - Sandrine Alibert
- UMR_MD1, U-1261, Aix Marseille Univ, INSERM, SSA, MCT, Faculté de Pharmacie, 27 Bd Jean Moulin, 13005 Marseille, France; (V.S.); (S.A.); (J.-M.P.); (J.-M.B.)
| | - Jean-Marie Pagès
- UMR_MD1, U-1261, Aix Marseille Univ, INSERM, SSA, MCT, Faculté de Pharmacie, 27 Bd Jean Moulin, 13005 Marseille, France; (V.S.); (S.A.); (J.-M.P.); (J.-M.B.)
| | - Claus Jacob
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, Campus B 2.1, D-66123 Saarbruecken, Germany;
| | - Elżbieta Karczewska
- Department of Pharmaceutical Microbiology, Jagiellonian University, Medical College, ul. Medyczna 9, 30-688 Krakow, Poland; (J.C.); (E.K.)
| | - Jean-Michel Bolla
- UMR_MD1, U-1261, Aix Marseille Univ, INSERM, SSA, MCT, Faculté de Pharmacie, 27 Bd Jean Moulin, 13005 Marseille, France; (V.S.); (S.A.); (J.-M.P.); (J.-M.B.)
| | - Jadwiga Handzlik
- Department of Technology and Biotechnology of Drugs, Jagiellonian University, Medical College, ul. Medyczna 9, 30-688 Krakow, Poland; (A.K.); (K.W.); (S.P.); (A.D.-P.); (A.L.); (G.L.)
- Correspondence: ; Tel.: +48 12 620-55-80
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Blanchet M, Borselli D, Rodallec A, Peiretti F, Vidal N, Bolla JM, Digiorgio C, Morrison KR, Wuest WM, Brunel JM. Claramines: A New Class Of Broad-Spectrum Antimicrobial Agents With Bimodal Activity. ChemMedChem 2018; 13:1018-1027. [DOI: 10.1002/cmdc.201800073] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Marine Blanchet
- Centre de Recherche en Cancérologie de Marseille (CRCM), CNRS, UMR 7258, Institut Paoli Calmette; Aix-Marseille Université UM 105, Inserm, U1068, Faculté de Pharmacie; 13385 Marseille France
| | - Diane Borselli
- Faculté de Médecine; Aix-Marseille Université, IRBA, TMCD2 UMR-MD1; 13385 Marseille France
| | - Anne Rodallec
- Centre de Recherche en Cancérologie de Marseille (CRCM), CNRS, UMR 7258, Institut Paoli Calmette; Aix-Marseille Université UM 105, Inserm, U1068, Faculté de Pharmacie; 13385 Marseille France
| | - Franck Peiretti
- Aix-Marseille Université, INSERM 1263, INRA1260, C2VN; 13385 Marseille France
| | - Nicolas Vidal
- YELEN, 10 Bd. Tempête; 13820 Ensues la Redonne France
| | - Jean-Michel Bolla
- Faculté de Médecine; Aix-Marseille Université, IRBA, TMCD2 UMR-MD1; 13385 Marseille France
| | - Carole Digiorgio
- Laboratoire de Mutagénèse Environnementale; Aix-Marseille Université, CNRS, IRD, IMBE UMR 7263; 13385 Marseille France
| | - Kelly R. Morrison
- Department of Chemistry; Emory University; 1515 Dickey Drive Atlanta GA 30322 USA
| | - William M. Wuest
- Department of Chemistry; Emory University; 1515 Dickey Drive Atlanta GA 30322 USA
| | - Jean Michel Brunel
- Centre de Recherche en Cancérologie de Marseille (CRCM), CNRS, UMR 7258, Institut Paoli Calmette; Aix-Marseille Université UM 105, Inserm, U1068, Faculté de Pharmacie; 13385 Marseille France
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8
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Lôme V, Brunel JM, Pagès JM, Bolla JM. Multiparametric Profiling for Identification of Chemosensitizers against Gram-Negative Bacteria. Front Microbiol 2018; 9:204. [PMID: 29556218 PMCID: PMC5845390 DOI: 10.3389/fmicb.2018.00204] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 11/16/2017] [Accepted: 01/29/2018] [Indexed: 01/22/2023] Open
Abstract
Antibiotic resistance is now a worldwide therapeutic problem. Since the beginning of anti-infectious treatment bacteria have rapidly shown an incredible ability to develop and transfer resistance mechanisms. In the last decades, the design variation of pioneer bioactive molecules has strongly improved their activity and the pharmaceutical companies partly won the race against the clock. Since the 1980s, the new classes of antibiotics that emerged were mainly directed to Gram-positive bacteria. Thus, we are now facing to multidrug-resistant Gram-negative bacteria, with no therapeutic options to deal with them. These bacteria are mainly resistant because of their double membrane that conjointly impairs antibiotic accumulation and extrudes these molecules when entered. The main challenge is to allow antibiotics to cross the impermeable envelope and reach their targets. One promising solution would be to associate, in a combination therapy, a usual antibiotic with a non-antibiotic chemosensitizer. Nevertheless, for effective drug discovery, there is a prominent lack of tools required to understand the rules of permeation and accumulation into Gram-negative bacteria. By the use of a multidrug-resistant enterobacteria, we introduce a high-content screening procedure for chemosensitizers discovery by quantitative assessment of drug accumulation, alteration of barriers, and deduction of their activity profile. We assembled and analyzed a control chemicals library to perform the proof of concept. The analysis was based on real-time monitoring of the efflux alteration and measure of the influx increase in the presence of studied compounds in an automatized bio-assay. Then, synergistic activity of compounds with an antibiotic was studied and kinetic data reduction was performed which led to the calculation of a score for each barrier to be altered.
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Affiliation(s)
- Vincent Lôme
- UMR MD1, Aix-Marseille University, IRBA, TMCD2, Facultés de Médecine et de Pharmacie, Marseille, France
| | - Jean-Michel Brunel
- Centre de Recherche en Cancérologie de Marseille (CRCM), CNRS, UMR7258, Institut Paoli Calmettes, Aix-Marseille Université, UM 105, Inserm, U1068, Faculté de Pharmacie, Marseille, France
| | - Jean-Marie Pagès
- UMR MD1, Aix-Marseille University, IRBA, TMCD2, Facultés de Médecine et de Pharmacie, Marseille, France
| | - Jean-Michel Bolla
- UMR MD1, Aix-Marseille University, IRBA, TMCD2, Facultés de Médecine et de Pharmacie, Marseille, France
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Brunel F, Lautard C, di Giorgio C, Garzino F, Raimundo JM, Bolla JM, Camplo M. Antibacterial activities of mono-, di- and tri-substituted triphenylamine-based phosphonium ionic liquids. Bioorg Med Chem Lett 2018; 28:926-929. [PMID: 29439903 DOI: 10.1016/j.bmcl.2018.01.057] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 12/18/2017] [Accepted: 01/26/2018] [Indexed: 12/22/2022]
Abstract
We report the synthesis of new mono, di and tri phosphonium ionic liquids and the evaluation of their antibacterial activities on both Gram-positive and Gram-negative bacteria from the ESKAPE-group. Among the molecules synthesized some of them reveal a strong bactericidal activity (MIC = 0.5 mg/L) for Gram-positive bacteria (including resistant strains) comparable to that of standard antibiotics. A comparative Gram positive and Gram negative antibacterial activities shows that the nature of counter-ion has no significant effects. Interestingly, the increase of phosphonium lateral chains (from 4 to 8 carbons) results in a decrease of antibacterial activities. However, the increase of the spacer length has a positive influence on the activity on both Gram-positive and Gram-negative bacteria except for E. aerogenes. Finally, the increased charge density has no effect on the Gram-positive antibacterial activities (MIC between 2 and 4 mg/L) but seems to attenuate (except for P. aeruginosa) the discrimination between Gram-positive and Gram-negative. Overall these results suggest a unique mechanism of action of these triphenylamine-phosphonium ionic liquid derivatives.
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Affiliation(s)
- Frédéric Brunel
- Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Aix-Marseille Université, CNRS UMR 7325, 163 Ave de Luminy case 913, 13288 Marseille Cedex 09, France
| | - Christelle Lautard
- Transporteurs Membranaires, Chimiorésistance et Drug Design, Aix-Marseille Université, IRBA, UMR-MD1, Facultés de Médecine et de Pharmacie, 13385 Marseille cedex 05, France
| | - Carole di Giorgio
- Aix-Marseille Université, Laboratoire de mutagenèse environnementale, IMBE, IFR ECCOREV, Faculté de Pharmacie, Marseille cedex, France
| | - Frédéric Garzino
- Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Aix-Marseille Université, CNRS UMR 7325, 163 Ave de Luminy case 913, 13288 Marseille Cedex 09, France
| | - Jean-Manuel Raimundo
- Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Aix-Marseille Université, CNRS UMR 7325, 163 Ave de Luminy case 913, 13288 Marseille Cedex 09, France
| | - Jean-Michel Bolla
- Transporteurs Membranaires, Chimiorésistance et Drug Design, Aix-Marseille Université, IRBA, UMR-MD1, Facultés de Médecine et de Pharmacie, 13385 Marseille cedex 05, France
| | - Michel Camplo
- Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Aix-Marseille Université, CNRS UMR 7325, 163 Ave de Luminy case 913, 13288 Marseille Cedex 09, France.
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10
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Dhanasekar NN, Aliouane S, Winterhalter M, Pagès JM, Bolla JM. Peptide translocation across MOMP, the major outer membrane channel from Campylobacter jejuni. Biochem Biophys Rep 2017; 11:79-83. [PMID: 28955771 PMCID: PMC5614690 DOI: 10.1016/j.bbrep.2017.06.007] [Citation(s) in RCA: 2] [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: 11/18/2016] [Revised: 04/12/2017] [Accepted: 06/22/2017] [Indexed: 11/17/2022] Open
Abstract
Here we report on translocation of short poly-arginines across the MOMP porin, the major outer membrane protein in the cell wall of Campylobacter jejuni. MOMP was purified to homogeneity from a pathogenic strain of C. jejuni. Its reconstitution in lipid membranes and measuring the ion-current revealed two main distinct populations of protein channels which we interpreted as mono and trimers. Addition of poly-arginines causes concentration and voltage dependent ion-current fluctuations. Increasing the transmembrane potential decreases the residence time of the peptide inside the channel indicating successful translocation. We conclude that poly-arginines can cross the outer membrane of Campylobacter through the MOMP channel. Translocation of short poly-arginines across the MOMP channel has been determined. Penta-arginine and Hepta-arginine translocate across the MOMP channel. Voltage dependent kinetics to distinguish binding from translocation.
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Affiliation(s)
| | | | - Mathias Winterhalter
- Department of Life Sciences and Chemistry, Jacobs University Bremen, 28719 Bremen, Germany
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11
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Fieulaine S, Alves de Sousa R, Maigre L, Hamiche K, Alimi M, Bolla JM, Taleb A, Denis A, Pagès JM, Artaud I, Meinnel T, Giglione C. Erratum: Corrigendum: A unique peptide deformylase platform to rationally design and challenge novel active compounds. Sci Rep 2017; 7:39365. [PMID: 28074917 PMCID: PMC5225600 DOI: 10.1038/srep39365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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12
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El Khatib M, Tran QT, Nasrallah C, Lopes J, Bolla JM, Vivaudou M, Pagès JM, Colletier JP. Providencia stuartii form biofilms and floating communities of cells that display high resistance to environmental insults. PLoS One 2017; 12:e0174213. [PMID: 28334028 PMCID: PMC5363852 DOI: 10.1371/journal.pone.0174213] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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: 11/22/2016] [Accepted: 03/06/2017] [Indexed: 12/21/2022] Open
Abstract
Biofilms are organized communities of bacterial cells that are responsible for the majority of human chronic bacterial infections. Providencia stuartii is a Gram-negative biofilm-forming bacterium involved in high incidence of urinary tract infections in catheterized patients. Yet, the structuration of these biofilms, and their resistance to environmental insults remain poorly understood. Here, we report on planktonic cell growth and biofilm formation by P. stuartii, in conditions that mimic its most common pathophysiological habitat in humans, i.e. the urinary tract. We observed that, in the planktonic state, P. stuartii forms floating communities of cells, prior to attachment to a surface and subsequent adoption of the biofilm phenotype. P. stuartii planktonic and biofilm cells are remarkably resistant to calcium, magnesium and to high concentrations of urea, and show the ability to grow over a wide range of pHs. Experiments conducted on a P. stuartii strain knocked-out for the Omp-Pst2 porin sheds light on the role it plays in the early stages of growth, as well as in the adaptation to high concentration of urea and to varying pH.
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Affiliation(s)
- Mariam El Khatib
- Institut de Biologie Structurale, Université Grenoble Alpes – Commissariat à l’Énergie Atomique – Centre National de la Recherche Scientifique, Grenoble, France
| | - Que-Tien Tran
- School of Biophysics, Jacobs University of Bremen, Bremen, Germany
| | - Chady Nasrallah
- Institut de Biologie Structurale, Université Grenoble Alpes – Commissariat à l’Énergie Atomique – Centre National de la Recherche Scientifique, Grenoble, France
| | - Julie Lopes
- Institut de Biologie Structurale, Université Grenoble Alpes – Commissariat à l’Énergie Atomique – Centre National de la Recherche Scientifique, Grenoble, France
| | - Jean-Michel Bolla
- Équipe Transporteurs Membranaires, Chimiorésistance et Drug-Design, Université Aix-Marseille – Institut de Recherche Biomédicale des Armées, Marseille, France
| | - Michel Vivaudou
- Institut de Biologie Structurale, Université Grenoble Alpes – Commissariat à l’Énergie Atomique – Centre National de la Recherche Scientifique, Grenoble, France
| | - Jean-Marie Pagès
- Équipe Transporteurs Membranaires, Chimiorésistance et Drug-Design, Université Aix-Marseille – Institut de Recherche Biomédicale des Armées, Marseille, France
| | - Jacques-Philippe Colletier
- Institut de Biologie Structurale, Université Grenoble Alpes – Commissariat à l’Énergie Atomique – Centre National de la Recherche Scientifique, Grenoble, France
- * E-mail:
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13
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Borselli D, Blanchet M, Bolla JM, Muth A, Skruber K, Phanstiel O, Brunel JM. Motuporamine Derivatives as Antimicrobial Agents and Antibiotic Enhancers against Resistant Gram-Negative Bacteria. Chembiochem 2017; 18:276-283. [PMID: 28098416 PMCID: PMC5299527 DOI: 10.1002/cbic.201600532] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 09/30/2016] [Indexed: 12/13/2022]
Abstract
Dihydromotuporamine C and its derivatives were evaluated for their in vitro antimicrobial activities and antibiotic enhancement properties against Gram‐negative bacteria and clinical isolates. The mechanism of action of one of these derivatives, MOTU‐N44, was investigated against Enterobacter aerogenes by using fluorescent dyes to evaluate outer‐membrane depolarization and permeabilization. Its efficiency correlated with inhibition of dye transport, thus suggesting that these molecules inhibit drug transporters by de‐energization of the efflux pump rather than by direct interaction of the molecule with the pump. This suggests that depowering the efflux pump provides another strategy to address antibiotic resistance.
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Affiliation(s)
- Diane Borselli
- Aix-Marseille Université, IRBA, TMCD2 UMR-MD1, Faculté de Médecine, 27 Boulevard Jean Moulin, 13385, Marseille Cedex 05, France
| | - Marine Blanchet
- Centre de Recherche en Cancérologie de Marseille (CRCM), CNRS, UMR7258, Institut Paoli Calmettes, Aix-Marseille Université, UM 105, Inserm, U1068, 27 Boulevard Jean Moulin, 13385, Marseille Cedex 05, France
| | - Jean-Michel Bolla
- Aix-Marseille Université, IRBA, TMCD2 UMR-MD1, Faculté de Médecine, 27 Boulevard Jean Moulin, 13385, Marseille Cedex 05, France
| | - Aaron Muth
- Department of Medical Education, University of Central Florida, 12722 Research Parkway, Orlando, FL, 32826-3227, USA
| | - Kristen Skruber
- Department of Medical Education, University of Central Florida, 12722 Research Parkway, Orlando, FL, 32826-3227, USA
| | - Otto Phanstiel
- Department of Medical Education, University of Central Florida, 12722 Research Parkway, Orlando, FL, 32826-3227, USA
| | - Jean Michel Brunel
- Centre de Recherche en Cancérologie de Marseille (CRCM), CNRS, UMR7258, Institut Paoli Calmettes, Aix-Marseille Université, UM 105, Inserm, U1068, 27 Boulevard Jean Moulin, 13385, Marseille Cedex 05, France
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14
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Ferrara LGM, Wallat GD, Moynié L, Dhanasekar NN, Aliouane S, Acosta-Gutiérrez S, Pagès JM, Bolla JM, Winterhalter M, Ceccarelli M, Naismith JH. MOMP from Campylobacter jejuni Is a Trimer of 18-Stranded β-Barrel Monomers with a Ca 2+ Ion Bound at the Constriction Zone. J Mol Biol 2016; 428:4528-4543. [PMID: 27693650 PMCID: PMC5090048 DOI: 10.1016/j.jmb.2016.09.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [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: 07/05/2016] [Revised: 09/26/2016] [Accepted: 09/26/2016] [Indexed: 11/11/2022]
Abstract
The Gram-negative organism Campylobacter jejuni is the major cause of food poisoning. Unlike Escherichia coli, which has two major porins, OmpC and OmpF, C. jejuni has one, termed major outer membrane protein (MOMP) through which nutrients and antibiotics transit. We report the 2.1-Å crystal structure of C. jejuni MOMP expressed in E. coli and a lower resolution but otherwise identical structure purified directly from C. jejuni. The 2.1-Å resolution structure of recombinant MOMP showed that although the protein has timeric arrangement similar to OmpC, it is an 18-stranded, not 16-stranded, β-barrel. The structure has identified a Ca2 + bound at the constriction zone, which is functionally significant as suggested by molecular dynamics and single-channel experiments. The water-filled channel of MOMP has a narrow constriction zone, and single-molecule studies show a monomeric conductivity of 0.7 ± 0.2 nS and a trimeric conductance of 2.2 ± 0.2 nS. The ion neutralizes negative charges at the constriction zone, reducing the transverse electric field and reversing ion selectivity. Modeling of the transit of ciprofloxacin, an antibiotic of choice for treating Campylobacter infection, through the pore of MOMP reveals a trajectory that is dependent upon the presence metal ion. The crystal structure of MOMP, the general diffusion porin of Campylobacter, has been determined. The protein is an 18-stranded β-barrel that is different than the 16-stranded OmpC and OmpF proteins from E. coli, but like them, MOMP is trimeric. The protein has a central pore size and conductivity intermediate between OmpC and OmpF. A Ca2 + ion bound at the constriction zone influences the biophysical properties of porin. The trajectory of the transit of the antibiotic ciprofloxacin through the pore is dependent on the presence of a metal ion.
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Affiliation(s)
- Luana G M Ferrara
- Biomedical Sciences Research Complex, University of St Andrews, 09042 St Andrews, UK
| | - Gregor D Wallat
- Biomedical Sciences Research Complex, University of St Andrews, 09042 St Andrews, UK
| | - Lucile Moynié
- Biomedical Sciences Research Complex, University of St Andrews, 09042 St Andrews, UK
| | - Naresh N Dhanasekar
- Department of Life Sciences and Chemistry, Jacobs University Bremen, 28719 Bremen, Germany
| | | | - Silvia Acosta-Gutiérrez
- Department of Physics, University of Cagliari, Cittadella Universitaria Monserrato, S.P8-km 0.700, 09042 Monserrato, Cagliari (CA), Italy
| | | | | | - Mathias Winterhalter
- Department of Life Sciences and Chemistry, Jacobs University Bremen, 28719 Bremen, Germany
| | - Matteo Ceccarelli
- Department of Physics, University of Cagliari, Cittadella Universitaria Monserrato, S.P8-km 0.700, 09042 Monserrato, Cagliari (CA), Italy
| | - James H Naismith
- Biomedical Sciences Research Complex, University of St Andrews, 09042 St Andrews, UK; State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610041, China.
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15
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Borselli D, Lieutaud A, Thefenne H, Garnotel E, Pagès JM, Brunel JM, Bolla JM. Polyamino-Isoprenic Derivatives Block Intrinsic Resistance of P. aeruginosa to Doxycycline and Chloramphenicol In Vitro. PLoS One 2016; 11:e0154490. [PMID: 27152508 PMCID: PMC4859512 DOI: 10.1371/journal.pone.0154490] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [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: 11/03/2015] [Accepted: 04/14/2016] [Indexed: 12/04/2022] Open
Abstract
Multidrug resistant bacteria have been a worldwide concern for decades. Though new molecules that effectively target Gram-positive bacteria are currently appearing on the market, a gap remains in the treatment of infections caused by Gram-negative bacteria. Therefore, new strategies must be developed against these pathogens. The aim of this study was to select an antibiotic for which a bacterium is naturally resistant and to use an escort molecule to restore susceptibility, similarly to the model of β-lactam/ β-lactamase inhibitors. High-content screening was performed on the reference strain PA01, allowing the selection of four polyamino-isoprenic compounds that acted synergistically with doxycycline. They were assayed against clinical isolates and Multi-Drug-Resistant strains. One of these compounds was able to decrease the MIC of doxycycline on the reference strain, efflux pump overproducers and clinical isolates of P. aeruginosa, to the susceptibility level. Similar results were obtained using chloramphenicol as the antibiotic. Membrane permeation assays and real-time efflux experiments were used to characterize the mechanism of doxycycline potentiation. The results showed that the selected compound strongly decreases the efficiency of glucose-triggered efflux associated with a slight destabilization of the outer membrane. According to these data, targeting natural resistance may become an interesting way to combat MDR pathogens and could represent an alternative to already devised strategies.
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Affiliation(s)
- Diane Borselli
- Aix-Marseille Université, IRBA, TMCD2 UMR-MD1, Faculté de Médecine, 13385 Marseille, France
| | - Aurélie Lieutaud
- Aix-Marseille Université, IRBA, TMCD2 UMR-MD1, Faculté de Médecine, 13385 Marseille, France
| | - Hélène Thefenne
- Aix-Marseille Université, IRBA, TMCD2 UMR-MD1, Faculté de Médecine, 13385 Marseille, France
- Hôpital d'Instruction des Armées Alphonse-Laveran, 13013 Marseille, France
| | - Eric Garnotel
- Aix-Marseille Université, IRBA, TMCD2 UMR-MD1, Faculté de Médecine, 13385 Marseille, France
- Hôpital d'Instruction des Armées Alphonse-Laveran, 13013 Marseille, France
| | - Jean-Marie Pagès
- Aix-Marseille Université, IRBA, TMCD2 UMR-MD1, Faculté de Médecine, 13385 Marseille, France
| | - Jean Michel Brunel
- Centre de Recherche en Cancérologie de Marseille (CRCM), CNRS, UMR7258, Institut Paoli Calmettes, Aix-Marseille Université, UM 105, Inserm, U1068, F-13009, Marseille, France
| | - Jean-Michel Bolla
- Aix-Marseille Université, IRBA, TMCD2 UMR-MD1, Faculté de Médecine, 13385 Marseille, France
- * E-mail:
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16
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Otręebska-Machaj E, Chevalier J, Handzlik J, Szymańska E, Schabikowski J, Boyer G, Bolla JM, Kieć-Kononowicz K, Pagès JM, Alibert S. Efflux Pump Blockers in Gram-Negative Bacteria: The New Generation of Hydantoin Based-Modulators to Improve Antibiotic Activity. Front Microbiol 2016; 7:622. [PMID: 27199950 PMCID: PMC4853399 DOI: 10.3389/fmicb.2016.00622] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 04/15/2016] [Indexed: 01/21/2023] Open
Abstract
Multidrug resistant (MDR) bacteria are an increasing health problem with the shortage of new active antibiotic agents. Among effective mechanisms that contribute to the spread of MDR Gram-negative bacteria are drug efflux pumps that expel clinically important antibiotic classes out of the cell. Drug pumps are attractive targets to restore the susceptibility toward the expelled antibiotics by impairing their efflux activity. Arylhydantoin derivatives were investigated for their potentiation of activities of selected antibiotics described as efflux substrates in Enterobacter aerogenes expressing or not AcrAB pump. Several compounds increased the bacterial susceptibility toward nalidixic acid, chloramphenicol and sparfloxacin and were further pharmacomodulated to obtain a better activity against the AcrAB producing bacteria.
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Affiliation(s)
- Ewa Otręebska-Machaj
- Department of Technology and Biotechnology of Drugs, Medical College, Jagiellonian UniversityKrakow, Poland; UMR-MD1, Aix Marseille Université/IRBA, Facultés de Médecine et de PharmacieMarseille, France
| | - Jacqueline Chevalier
- UMR-MD1, Aix Marseille Université/IRBA, Facultés de Médecine et de Pharmacie Marseille, France
| | - Jadwiga Handzlik
- Department of Technology and Biotechnology of Drugs, Medical College, Jagiellonian University Krakow, Poland
| | - Ewa Szymańska
- Department of Technology and Biotechnology of Drugs, Medical College, Jagiellonian University Krakow, Poland
| | - Jakub Schabikowski
- Department of Technology and Biotechnology of Drugs, Medical College, Jagiellonian University Krakow, Poland
| | - Gérard Boyer
- UMR-MD1, Aix Marseille Université/IRBA, Facultés de Médecine et de Pharmacie Marseille, France
| | - Jean-Michel Bolla
- UMR-MD1, Aix Marseille Université/IRBA, Facultés de Médecine et de Pharmacie Marseille, France
| | - Katarzyna Kieć-Kononowicz
- Department of Technology and Biotechnology of Drugs, Medical College, Jagiellonian University Krakow, Poland
| | - Jean-Marie Pagès
- UMR-MD1, Aix Marseille Université/IRBA, Facultés de Médecine et de Pharmacie Marseille, France
| | - Sandrine Alibert
- UMR-MD1, Aix Marseille Université/IRBA, Facultés de Médecine et de Pharmacie Marseille, France
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17
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Pieri C, Borselli D, Di Giorgio C, De Méo M, Bolla JM, Vidal N, Combes S, Brunel JM. New Ianthelliformisamine Derivatives as Antibiotic Enhancers against Resistant Gram-Negative Bacteria. J Med Chem 2014; 57:4263-72. [DOI: 10.1021/jm500194e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cyril Pieri
- Centre de Recherche en Cancérologie de Marseille (CRCM), CNRS, UMR7258, Institut Paoli Calmettes, Aix-Marseille Université, UM 105, Inserm, U1068, F-13009 Marseille, France
| | - Diane Borselli
- Aix-Marseille Université, IRBA, TMCD2 UMR-MD1, Faculté de Médecine, 13385 Marseille, France
| | - Carole Di Giorgio
- Aix-Marseille Université, CNRS, UMR 7263/IRD 237, 13385 Marseille Cedex 05, France
| | - Michel De Méo
- Aix-Marseille Université, CNRS, UMR 7263/IRD 237, 13385 Marseille Cedex 05, France
| | - Jean-Michel Bolla
- Aix-Marseille Université, IRBA, TMCD2 UMR-MD1, Faculté de Médecine, 13385 Marseille, France
| | - Nicolas Vidal
- UPCAM iSm2, Case 342, Aix-Marseille Université, Avenue Escadrille Normandie Niémen, 13397 Marseille Cedex 13, France
| | - Sébastien Combes
- Centre de Recherche en Cancérologie de Marseille (CRCM), CNRS, UMR7258, Institut Paoli Calmettes, Aix-Marseille Université, UM 105, Inserm, U1068, F-13009 Marseille, France
| | - Jean Michel Brunel
- Centre de Recherche en Cancérologie de Marseille (CRCM), CNRS, UMR7258, Institut Paoli Calmettes, Aix-Marseille Université, UM 105, Inserm, U1068, F-13009 Marseille, France
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18
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19
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Brunel JM, Lieutaud A, Lome V, Pagès JM, Bolla JM. Polyamino geranic derivatives as new chemosensitizers to combat antibiotic resistant Gram-negative bacteria. Bioorg Med Chem 2013; 21:1174-9. [DOI: 10.1016/j.bmc.2012.12.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Accepted: 12/22/2012] [Indexed: 11/30/2022]
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20
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Djabou N, Lorenzi V, Guinoiseau E, Andreani S, Giuliani MC, Desjobert JM, Bolla JM, Costa J, Berti L, Luciani A, Muselli A. Phytochemical composition of Corsican Teucrium essential oils and antibacterial activity against foodborne or toxi-infectious pathogens. Food Control 2013. [DOI: 10.1016/j.foodcont.2012.06.025] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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21
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Bajaj H, Tran QT, Mahendran KR, Nasrallah C, Colletier JP, Davin-Regli A, Bolla JM, Pagès JM, Winterhalter M. Antibiotic uptake through membrane channels: role of Providencia stuartii OmpPst1 porin in carbapenem resistance. Biochemistry 2012; 51:10244-9. [PMID: 23210483 DOI: 10.1021/bi301398j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The role of major porin OmpPst1 of Providencia stuartii in antibiotic susceptibility for two carbapenems is investigated by combining high-resolution conductance measurements, liposome swelling, and microbiological assays. Reconstitution of a single OmpPst1 into a planar lipid bilayer and measuring the ion current, in the presence of imipenem, revealed a concentration-dependent decrease in conductance, whereas meropenem produced well-resolved short ion current blockages. Liposome swelling assays suggested a small flux of imipenem in contrast to a rapid permeation of meropenem. The lower antibiotic susceptibility of P. stuartii to imipenem compared to meropenem correlated well with the decreased level of permeation of the former through the OmpPst1 channel.
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Affiliation(s)
- Harsha Bajaj
- School of Engineering and Science, Jacobs University Bremen, Bremen, Germany
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22
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Sulaeman S, Hernould M, Schaumann A, Coquet L, Bolla JM, Dé E, Tresse O. Enhanced adhesion of Campylobacter jejuni to abiotic surfaces is mediated by membrane proteins in oxygen-enriched conditions. PLoS One 2012; 7:e46402. [PMID: 23029510 PMCID: PMC3460892 DOI: 10.1371/journal.pone.0046402] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [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: 04/24/2012] [Accepted: 08/31/2012] [Indexed: 11/19/2022] Open
Abstract
Campylobacter jejuni is responsible for the major foodborne bacterial enteritis in humans. In contradiction with its fastidious growth requirements, this microaerobic pathogen can survive in aerobic food environments, suggesting that it must employ a variety of protection mechanisms to resist oxidative stress. For the first time, C. jejuni 81-176 inner and outer membrane subproteomes were analyzed separately using two-dimensional protein electrophoresis (2-DE) of oxygen-acclimated cells and microaerobically grown cells. LC-MS/MS analyses successfully identified 42 and 25 spots which exhibited a significantly altered abundance in the IMP-enriched fraction and in the OMP-enriched fraction, respectively, in response to oxidative conditions. These spots corresponded to 38 membrane proteins that could be grouped into different functional classes: (i) transporters, (ii) chaperones, (iii) fatty acid metabolism, (iv) adhesion/virulence and (v) other metabolisms. Some of these proteins were up-regulated at the transcriptional level in oxygen-acclimated cells as confirmed by qRT-PCR. Downstream analyses revealed that adhesion of C. jejuni to inert surfaces and swarming motility were enhanced in oxygen-acclimated cells or paraquat-stressed cells, which could be explained by the higher abundance of membrane proteins involved in adhesion and biofilm formation. The virulence factor CadF, over-expressed in the outer membrane of oxygen-acclimated cells, contributes to the complex process of C. jejuni adhesion to inert surfaces as revealed by a reduction in the capability of C. jejuni 81-176 ΔCadF cells compared to the isogenic strain.Taken together, these data demonstrate that oxygen-enriched conditions promote the over-expression of membrane proteins involved in both the biofilm initiation and virulence of C. jejuni.
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Affiliation(s)
- Sheiam Sulaeman
- INRA UMR1014 SECALIM, Nantes, France
- LUNAM Université, Oniris, Université de Nantes, Nantes, France
| | - Mathieu Hernould
- INRA UMR1014 SECALIM, Nantes, France
- LUNAM Université, Oniris, Université de Nantes, Nantes, France
| | - Annick Schaumann
- Université de Rouen, Laboratoire Polymères Biopolymères Surfaces, UMR 6270 and FR 3038 CNRS, IFRMP23, Mont-Saint-Aignan, France
| | - Laurent Coquet
- Université de Rouen, Laboratoire Polymères Biopolymères Surfaces, UMR 6270 and FR 3038 CNRS, IFRMP23, Mont-Saint-Aignan, France
| | - Jean-Michel Bolla
- UMR-MD1, Université de Aix-Marseille, IRBA, Facultés de Médecine et de Pharmacie, Marseille, France
| | - Emmanuelle Dé
- Université de Rouen, Laboratoire Polymères Biopolymères Surfaces, UMR 6270 and FR 3038 CNRS, IFRMP23, Mont-Saint-Aignan, France
| | - Odile Tresse
- INRA UMR1014 SECALIM, Nantes, France
- LUNAM Université, Oniris, Université de Nantes, Nantes, France
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Bolla JM, Alibert-Franco S, Handzlik J, Chevalier J, Mahamoud A, Boyer G, Kieć-Kononowicz K, Pagès JM. Strategies for bypassing the membrane barrier in multidrug resistant Gram-negative bacteria. FEBS Lett 2011; 585:1682-90. [DOI: 10.1016/j.febslet.2011.04.054] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Revised: 04/20/2011] [Accepted: 04/21/2011] [Indexed: 10/18/2022]
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Pages JM, Alibert-Franco S, Mahamoud A, Bolla JM, Davin-Regli A, Chevalier J, Garnotel E. Efflux Pumps of Gram-Negative Bacteria, a New Target for New Molecules. Curr Top Med Chem 2010; 10:1848-57. [DOI: 10.2174/156802610793176620] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Accepted: 12/01/2009] [Indexed: 11/22/2022]
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25
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Pages JM, Alibert-Franco S, Mahamoud A, Bolla JM, Davin-Regli A, Chevalier J, Garnotel E. Efflux Pumps of Gram-Negative Bacteria, a New Target for New Molecules. Curr Top Med Chem 2010. [DOI: 10.2174/1568210206151890266] [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: 11/22/2022]
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James CE, Mahendran KR, Molitor A, Bolla JM, Bessonov AN, Winterhalter M, Pagès JM. How beta-lactam antibiotics enter bacteria: a dialogue with the porins. PLoS One 2009; 4:e5453. [PMID: 19434239 PMCID: PMC2677626 DOI: 10.1371/journal.pone.0005453] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [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: 10/14/2008] [Accepted: 04/02/2009] [Indexed: 01/26/2023] Open
Abstract
Background Multi-drug resistant (MDR) infections have become a major concern in hospitals worldwide. This study investigates membrane translocation, which is the first step required for drug action on internal bacterial targets. β-lactams, a major antibiotic class, use porins to pass through the outer membrane barrier of Gram-negative bacteria. Clinical reports have linked the MDR phenotype to altered membrane permeability including porin modification and efflux pump expression. Methodology/Principal Findings Here influx of β-lactams through the major Enterobacter aerogenes porin Omp36 is characterized. Conductance measurements through a single Omp36 trimer reconstituted into a planar lipid bilayer allowed us to count the passage of single β-lactam molecules. Statistical analysis of each transport event yielded the kinetic parameters of antibiotic travel through Omp36 and distinguishable translocation properties of β-lactams were quantified for ertapenem and cefepime. Expression of Omp36 in an otherwise porin-null bacterial strain is shown to confer increases in the killing rate of these antibiotics and in the corresponding bacterial susceptibility. Conclusions/Significance We propose the idea of a molecular “passport” that allows rapid transport of substrates through porins. Deciphering antibiotic translocation provides new insights for the design of novel drugs that may be highly effective at passing through the porin constriction zone. Such data may hold the key for the next generation of antibiotics capable of rapid intracellular accumulation to circumvent the further development MDR infections.
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Affiliation(s)
- Chloë E. James
- UMR-MD-1, Transporteurs membranaires, Chimiorésistance et Drug Design, Faculté de Médecine, IFR 88, Université de la Méditerranée, Marseille, France
| | | | - Alexander Molitor
- UMR-MD-1, Transporteurs membranaires, Chimiorésistance et Drug Design, Faculté de Médecine, IFR 88, Université de la Méditerranée, Marseille, France
| | - Jean-Michel Bolla
- UMR-MD-1, Transporteurs membranaires, Chimiorésistance et Drug Design, Faculté de Médecine, IFR 88, Université de la Méditerranée, Marseille, France
| | - Andrey N. Bessonov
- School of Engineering and Science, Jacobs University Bremen, Bremen, Germany
| | | | - Jean-Marie Pagès
- UMR-MD-1, Transporteurs membranaires, Chimiorésistance et Drug Design, Faculté de Médecine, IFR 88, Université de la Méditerranée, Marseille, France
- * E-mail:
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Davin-Regli A, Bolla JM, James C, Lavigne JP, Chevalier J, Garnotel E, Molitor A, Pages JM. Membrane Permeability and Regulation of Drug “Influx and Efflux” in Enterobacterial Pathogens. Curr Drug Targets 2008; 9:750-9. [DOI: 10.2174/138945008785747824] [Citation(s) in RCA: 138] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Dedieu L, Pagès JM, Bolla JM. The omp50 gene is transcriptionally controlled by a temperature-dependent mechanism conserved among thermophilic Campylobacter species. Res Microbiol 2008; 159:270-8. [PMID: 18485677 DOI: 10.1016/j.resmic.2008.03.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2007] [Revised: 03/05/2008] [Accepted: 03/10/2008] [Indexed: 12/25/2022]
Abstract
The thermophilic Campylobacters are enteropathogenic for humans. We recently showed that Omp50 is a Campylobacter species-specific porin produced in Campylobacter jejuni and Campylobacter lari but not in Campylobacter coli. In the present study, we investigated regulation of the omp50 gene and found that its expression in C. jejuni was temperature-dependent, but independent of growth phase or medium viscosity. The use of RT-PCR and omp50::lacZ fusions showed that growth temperature control occurred at the transcriptional level. The promoter and the coding sequence were cloned in an Escherichia coli-Campylobacter shuttle plasmid and transferred to E. coli and to a C. jejuni Omp50-deficient strain. Regulation of omp50 gene expression by growth temperature was observed in the recombinant C. jejuni strain, but not in E. coli. The same regulation was also observed in wild-type C. lari strains and in a C. coli strain supplemented by the plasmid, suggesting that omp50 expression is controlled by a mechanism conserved among Campylobacter species.
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Affiliation(s)
- Luc Dedieu
- UMR-MD-1, IFR 48, Faculté de Médecine, Université de la Méditerranée, 27 Boulevard Jean Moulin, Marseille Cedex 5, France
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Rossi PG, Bao L, Luciani A, Panighi J, Desjobert JM, Costa J, Casanova J, Bolla JM, Berti L. (E)-Methylisoeugenol and elemicin: antibacterial components of Daucus carota L. essential oil against Campylobacter jejuni. J Agric Food Chem 2007; 55:7332-6. [PMID: 17685629 DOI: 10.1021/jf070674u] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The essential oil of wild Daucus carota L. obtained from aerial parts at the end of the flowering stage (DCEO) was reported as antimicrobial against the human enteropathogen Campylobacter jejuni. The aim of the present study was to extend this analysis to other Campylobacter species and to identify the active compounds of the essential oil, subjected to GC, GC-MS, and (13)C NMR analysis. A minimum inhibitory concentration assay was used to quantify the antimicrobial activity of DCEO and the major components, isolated on column chromatography. Growth of all the C. jejuni, Campylobacter coli, and Campylobacter lari strains tested, including one multidrug resistant C. jejuni, was inhibited to the same extent by DCEO. Molecules that were responsible for the antibacterial activity were identified as (E)-methylisoeugenol and elemicin. Moreover, the use of structural analogues of these compounds allowed us to identify important features that may account for the activity.
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Affiliation(s)
- Paul-Georges Rossi
- Laboratoire de Biochimie et de Biologie Moléculaire du Végétal and Laboratoire de Chimie des Produits Naturels, Université de Corse, 20250 Corte, France
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Rossi PG, Berti L, Panighi J, Luciani A, Maury J, Muselli A, Serra DDR, Gonny M, Bolla JM. Antibacterial Action of Essential Oils from Corsica. Journal of Essential Oil Research 2007. [DOI: 10.1080/10412905.2007.9699254] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Abstract
Membrane proteins are of keen interest to structural biologists, as they are known to act as receptors, adhesins, sensors, transporters, and signal-transducers of living cells. During the past few decades, the efforts made to study the bacterial membrane proteins have been impaired by the problems encountered during the production and purification of native proteins. Herein we demonstrate that the Campylobacter jejuni CadF protein, which was isolated using a novel purification strategy, exhibits biological activity as evidenced by channel activity in lipid bilayers. CadF, an E. coli OmpA-like protein, facilitates the binding of C. jejuni to the extracellular matrix component, fibronectin.
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Affiliation(s)
- Laurent Mamelli
- UMR-MD1, IFR 48, Faculté de Médecine, Université de la Méditerranée, Marseille Cedex, France
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Abstract
Campylobacter is the most common cause of bacterial gastroenteritis in the world. Poultry is the main reservoir of human infections. The widespread use of antibiotics in agriculture and veterinary medicine has resulted in the emergence of an increasing number of antibiotic-resistant Campylobacter strains that can be transmitted to humans through the food chain. Of particular concern to public health is the prevalence of resistance to macrolides and fluoroquinolones that are used in the treatment of life-threatening campylobacteriosis. The CmeABC efflux system has been shown to contribute to the intrinsic and acquired resistance to these antibiotics. In addition, by mediating resistance to bile, it is essential for colonization of the chicken gut in vivo. Inhibition of CmeABC may provide an effective means of reversing antibiotic resistance and decreasing the transmission of Campylobacter via the food chain. This would positively impact on public health by decreasing the morbidity, mortality and increased healthcare costs associated with the treatment of antibiotic-resistant Campylobacter.
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Affiliation(s)
- Teresa Quinn
- Centre for Food Safety, School of Agriculture, Food Science and Veterinary Medicine, University College Dublin Belfield, Dublin 4, Ireland
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Mamelli L, Demoulin E, Prouzet-Mauléon V, Mégraud F, Pagès JM, Bolla JM. Prevalence of efflux activity in low-level macrolide-resistant Campylobacter species. J Antimicrob Chemother 2006; 59:327-8. [PMID: 17114177 DOI: 10.1093/jac/dkl476] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Mamelli L, Pagès JM, Konkel ME, Bolla JM. Expression and purification of native and truncated forms of CadF, an outer membrane protein of Campylobacter. Int J Biol Macromol 2006; 39:135-40. [PMID: 16620952 DOI: 10.1016/j.ijbiomac.2006.03.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2006] [Revised: 03/08/2006] [Accepted: 03/08/2006] [Indexed: 12/01/2022]
Abstract
Campylobacter is now recognized as the most common bacterial agent of gastroenteritis. The adhesion of bacteria to intestinal cells is a major step in human colonization. The binding of Campylobacter jejuni cells to fibronectin (Fn), a component of the extra cellular matrix, is mediated by a 37,000 outer membrane protein termed CadF for Campylobacter adhesion to Fn. CadF protein is very hard to purify from Campylobacter membranes. In order to study the conformation of this protein, we set out to clone, express, purify, and re-fold the CadF protein. The nucleotide sequence encoding the N-terminal domain of the CadF protein was cloned in a pET-based expression vector. The recombinant protein was further produced in Escherichia coli, purified from inclusion bodies, and refolded. More specifically, the purification experiments were set-up as follows: (i) protein aggregates were collected from cell-lysates, solubilized in urea and enriched by ion-exchange chromatography; (ii) refolding was achieved by drop-by-drop dilution method in detergent containing buffer and monitored by CD measurements; (iii) the protein was finally purified to homogeneity by gel filtration chromatography. In spite of our success in purifying the N-terminal domain of the CadF protein, repeated attempts to express and purify the entire cadF gene in E. coli failed. Using a novel approach, we found it possible to express the entire cadF gene fused to a hexa-histidine encoding nucleotide sequence in C. jejuni. This allowed the expression, synthesis, and purification of the recombinant CadF-His tagged protein from C. jejuni by nickel affinity chromatography followed by gel filtration chromatography. In summary, we developed a novel strategy to produce significant quantities of a recombinant N-terminal portion of the CadF protein (46.5 microg/mg of bacterial dry weight) and of the native CadF protein (3.5 microg/mg of bacterial dry weight) for further studies.
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Affiliation(s)
- Laurent Mamelli
- EA 2197, IFR 48, Faculté de Médecine, Université de la Méditerranée, 13385 Marseille Cedex 05, France
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Payot S, Bolla JM, Corcoran D, Fanning S, Mégraud F, Zhang Q. Mechanisms of fluoroquinolone and macrolide resistance in Campylobacter spp. Microbes Infect 2006; 8:1967-71. [PMID: 16713726 DOI: 10.1016/j.micinf.2005.12.032] [Citation(s) in RCA: 129] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2005] [Accepted: 12/28/2005] [Indexed: 10/24/2022]
Abstract
The incidence of human Campylobacter infections is increasing worldwide, as well as the proportion of isolates resistant to fluoroquinolones and/or macrolides, the drugs of choice to treat campylobacteriosis. In this review, we report recent developments in the understanding of the resistance mechanisms to fluoroquinolones and macrolides. In addition, we will discuss the recent findings on multidrug resistance in Campylobacter spp.
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Affiliation(s)
- Sophie Payot
- Institut National de la Recherche Agronomique, UR086 BioAgresseurs, Santé, Environnement, Nouzilly, France.
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Mamelli L, Prouzet-Mauléon V, Pagès JM, Mégraud F, Bolla JM. Molecular basis of macrolide resistance in Campylobacter: role of efflux pumps and target mutations. J Antimicrob Chemother 2005; 56:491-7. [PMID: 16055509 DOI: 10.1093/jac/dki253] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Erythromycin is the drug of choice to treat human campylobacteriosis. Campylobacter isolates exhibit two different phenotypes with regard to erythromycin resistance: high-level resistant strains (HLR) and low-level resistant strains (LLR). OBJECTIVES To study the mechanisms of resistance of Campylobacter to erythromycin, its 6-O-methyl derivative clarithromycin and the ketolide telithromycin. RESULTS We observed a cross-resistance against these three molecules but in contrast, no cross-resistance to quinolones. Analyses of LLR showed no mutation on the 23S rDNA and the presence of a drug transport system, which can be inhibited by phenylalanine arginine beta-naphthylamide (PAbetaN), an efflux-pump inhibitor. In contrast, no PAbetaN-sensitive drug transport was identified in HLR but we found mutations in the rDNA, which were responsible for decreased binding of telithromycin to purified ribosomes. We further showed that the CmeB efflux pump already described in Campylobacter is not involved in the PAbetaN-sensitive transport of telithromycin. CONCLUSIONS Mutations in the ribosome confer high-level macrolide/ketolide resistance. Low-level resistance was mediated by an efflux mechanism which is sensitive to PAbetaN. This efflux pump was selective to macrolides/ketolide and was different from the previously described Campylobacter efflux pump.
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Affiliation(s)
- Laurent Mamelli
- Université de la Méditerranée, Enveloppe Bactérienne, Perméabilité et Antibiotiques, EA2197, IFR48, Faculté de Médecine, 27 Bd Jean Moulin 13385, Marseille Cedex 05, France
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Abstract
We studied the prevalence of the omp50 gene and the Omp50 protein in Campylobacter strains. Immunodetection assays and DNA-DNA hybridizations showed that most C. coli strains tested were negative and most C. jejuni and C. lari strains tested were positive. A PCR assay was developed, using the omp50 gene as a species-specific target. We propose a combination of a hippurate test and an omp50 assay to perform identification of Campylobacter species.
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Affiliation(s)
- Luc Dedieu
- EA 2197 and IFR 48, Faculté de Médecine, Université de la Méditerranée, 13385 Marseille Cedex 5, France
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Goulhen F, Dé E, Pagès JM, Bolla JM. Functional refolding of the Campylobacter jejuni MOMP (major outer membrane protein) porin by GroEL from the same species. Biochem J 2004; 378:851-6. [PMID: 14662009 PMCID: PMC1224022 DOI: 10.1042/bj20031239] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2003] [Revised: 12/05/2003] [Accepted: 12/08/2003] [Indexed: 11/17/2022]
Abstract
Functional and structural studies of outer membrane proteins from Gram-negative bacteria are frequently carried out using refolded proteins. Recombinant proteins are produced in Escherichia coli as inclusion bodies and then tediously refolded by dilution in buffered detergent solutions. In the present work, we obtained the refolding of MOMP (major outer membrane protein) from Campylobacter assisted by the molecular chaperone GroEL. Refolded MOMP recovered its native pore-forming activity when reconstituted in planar lipid bilayers. Both proteins were purified from the Campylobacter jejuni strain 85H. The purity of GroEL was assessed by silver staining and MS. Its native ultrastructure was observed by the use of transmission electron microscopy. Denaturation of MOMP was performed in urea at 65 degrees C followed by dialysis against 100 mM acetic acid, and was assessed by CD analysis. MOMP refolding reached a maximum efficiency in the presence of GroEL (at a MOMP/GroEL molar ratio of 9:1) and ATP. Under these conditions, 95% of denatured MOMP was refolded after a 15 min incubation. This approach represents an alternative method in studies of membrane protein refolding.
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Affiliation(s)
- Florence Goulhen
- EA 2197, IFR 48, Faculté de Médecine, 27 boulevard Jean Moulin, 13385 Marseille cedex 05, France
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Mamelli L, Amoros JP, Pagès JM, Bolla JM. A phenylalanine–arginine β-naphthylamide sensitive multidrug efflux pump involved in intrinsic and acquired resistance of Campylobacter to macrolides. Int J Antimicrob Agents 2003; 22:237-41. [PMID: 13678827 DOI: 10.1016/s0924-8579(03)00199-7] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The macrolide erythromycin is the antibiotic of choice in the management of Campylobacter infections. Although mutation has been reported to account for resistance to the antibiotic, resistance may also be due to an efflux pump that extrudes the drug prior to reaching its target. Moreover, the efflux pump may be one that accommodates resistance to other related or unrelated drugs (multidrug resistance). We examined the possibility that resistance to erythromycin may involve an efflux pump whose presence may be identified by the use of the unique commercial inhibitor of the previously described efflux pumps phenylalanine-arginine beta-naphtylamide (PAbetaN). We showed that PAbetaN is able to significantly increase the susceptibility of the reference strain NCTC 11168 to erythromycin, suggesting that an efflux pump functions at a basal level in the reference wild type strain. Erythromycin-resistant isolates were tested for their response to PAbetaN treatment. Among the strains tested, resistance of three isolates to erythromycin was reduced to a level comparable to that of the susceptible strain when the strains were grown in the presence of this inhibitor. To conclude, besides mutations, erythromycin resistance in Campylobacter may also be due to an efflux mechanism sensitive to PAbetaN.
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Affiliation(s)
- Laurent Mamelli
- EA 2197, IFR 48, Faculté de Médecine, Université de la Méditerranée, 27 boulevard Jean Moulin, 13385 Marseille Cedex 05, France
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Dedieu L, Pagès JM, Bolla JM. Environmental regulation of Campylobacter jejuni major outer membrane protein porin expression in Escherichia coli monitored by using green fluorescent protein. Appl Environ Microbiol 2002; 68:4209-15. [PMID: 12200267 PMCID: PMC124132 DOI: 10.1128/aem.68.9.4209-4215.2002] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Porins allow exchanges between bacteria and their environment. In the gram-negative food-borne pathogen Campylobacter jejuni two porins, major outer membrane protein (MOMP) and Omp50, have been identified. MOMP is synthesized at a very high level under laboratory culture conditions, suggesting that its promoter functions very efficiently under these conditions. In Campylobacter samples, we observed that MOMP porin expression increased at a high temperature (42 degrees C) or a high pH (pH 8.5) compared to expression at a low temperature (31 degrees C) or an acidic pH (pH 5.5). To study the regulation of MOMP expression at the transcriptional level, we constructed an momp-gfp fusion in which gfp expression was put under the control of the momp promoter. Interestingly, we observed the same pattern of regulation in Escherichia coli, as monitored by green fluorescent protein production, that was found in CAMPYLOBACTER: The ranges of pH and temperature tested are physiologically relevant, because they can be found in the digestive tracts of both birds and humans, which are both colonized by CAMPYLOBACTER: Our results suggest that a component of the regulatory mechanism is conserved in C. jejuni and E. coli. However, medium osmolarity and sodium salicylate did not have a significant effect on C. jejuni momp promoter activity in E. coli, suggesting that major regulatory elements of E. coli porin expression do not participate in MOMP regulation. In contrast, mechanisms involving DNA supercoiling may be involved, as shown by DNA gyrase inhibition assays. These findings are a step towards determining the role of outer membrane proteins in the adaptation of C. jejuni to its environment.
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Affiliation(s)
- Luc Dedieu
- CJF 96-06 INSERM, EA 2197 and IFR 48, Faculté de Médecine, Université de la Méditerranée, 13385 Marseille Cedex 5, France
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Labesse G, Garnotel E, Bonnel S, Dumas C, Pages JM, Bolla JM. MOMP, a divergent porin from Campylobacter: cloning and primary structural characterization. Biochem Biophys Res Commun 2001; 280:380-7. [PMID: 11162527 DOI: 10.1006/bbrc.2000.4129] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We report a structural analysis at the molecular level of MOMP from Campylobacter, a gram-negative bacteria responsible for diarrhea. The corresponding gene was cloned and sequenced. Sequence comparison of seven MOMP sequences (three extracted from protein databases and four determined in this study) from distinct strains indicated alternation of preserved and divergent regions. No other significant sequence similarities could be detected. Comparison of MOMP with the crystal structures of other porins strongly suggested that it might adopt a similar fold and revealed the conservation of the monomer-monomer interface. The conservation clustered in the regions comprising or interacting with the loop L2. On the contrary, strands not involved in the interface are more divergent. Proteolysis assays and biochemical treatment supported the proposed model. Our study suggested that MOMP belong to the maltoporin super-family sharing common structural motifs. In view of this model we discuss its specificity and its global stability.
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Affiliation(s)
- G Labesse
- INSERM-CJF, 9606 Faculté de Médecine, 27 boulevard Jean Moulin, 13385 Marseille cedex 5, France
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Bolla JM, Dé E, Dorez A, Pagès JM. Purification, characterization and sequence analysis of Omp50,a new porin isolated from Campylobacter jejuni. Biochem J 2000; 352 Pt 3:637-43. [PMID: 11104668 PMCID: PMC1221499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
A novel pore-forming protein identified in Campylobacter was purified by ion-exchange chromatography and named Omp50 according to both its molecular mass and its outer membrane localization. We observed a pore-forming ability of Omp50 after re-incorporation into artificial membranes. The protein induced cation-selective channels with major conductance values of 50-60 pS in 1 M NaCl. N-terminal sequencing allowed us to identify the predicted coding sequence Cj1170c from the Campylobacter jejuni genome database as the corresponding gene in the NCTC 11168 genome sequence. The gene, designated omp50, consists of a 1425 bp open reading frame encoding a deduced 453-amino acid protein with a calculated pI of 5.81 and a molecular mass of 51169.2 Da. The protein possessed a 20-amino acid leader sequence. No significant similarity was found between Omp50 and porin protein sequences already determined. Moreover, the protein showed only weak sequence identity with the major outer-membrane protein (MOMP) of Campylobacter, correlating with the absence of antigenic cross-reactivity between these two proteins. Omp50 is expressed in C. jejuni and Campylobacter lari but not in Campylobacter coli. The gene, however, was detected in all three species by PCR. According to its conformation and functional properties, the protein would belong to the family of outer-membrane monomeric porins.
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Affiliation(s)
- J M Bolla
- CJF 96-06 INSERM, Faculté de Médecine la Timone, Université de la Méditerranée, 27 Bd Jean Moulin, 13385 Marseille Cedex 05, France.
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Abstract
The great majority of trimeric porins of Gram-negative bacteria cannot be dissociated into monomers without disrupting their folded conformation. The porin of Campylobacter jejuni, however, displays two folded structures, a classical oligomer and a monomer resistant to detergent denaturation. We probed the transition of trimer to monomer using light scattering experiments and examined the secondary structures of these two molecular states by infra-red spectroscopy. The channel-forming properties of both trimer and monomer were studied after incorporation into artificial lipid bilayers. In these conditions, the trimer induced ion channels with a conductance value of 1200 pS in 1 M NaCl. The pores showed marked cationic selectivity and sensitivity to low voltage. Analysis of the isolated monomer showed nearly the same single-channel conductance and the same selectivity and sensitivity to voltage. These results indicate that the folded monomer form of C. jejuni MOMP displays essentially the same pore-forming properties as the native trimer.
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Affiliation(s)
- E Dé
- UMR 6522, CNRS, IFRMP 23, Faculté des Sciences, 76821, Mont-Saint-Aignan, France
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46
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Abstract
Thirteen Campylobacter jejuni strains of human origin showed differing behaviours when analysed for their ability to bind the Caco-2 cell line in vitro, suggesting variations in genetic complements and/or regulation. We designed an oligonucleotide probe corresponding to a highly conserved part of adhesins from various Gram-negative bacteria. Among our laboratory collection, Southern hybridization has demonstrated that only a discrete number of strains harbour this sequence. The corresponding gene has been cloned from our prototype strain and sequence analysis has confirmed homology with Gram-negative bacterial adhesins. The ORF corresponded to 869 amino acids; we named this protein P95. Protein sequence similarity assessment demonstrated that this gene product belongs to the family of proteins including the filamentous haemagglutinin of Bordetella pertussis and the high-molecular-weight surface-exposed adhesins of Haemophilus influenzae. Comparison of adhesion and hybridization results emphasized the involvement of this gene in an essential pathogenic process of Campylobacter.
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Affiliation(s)
- K Kelle
- Faculté de Médecine de la Timone, Marseille, France
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Zhuang J, Engel A, Pagés JM, Bolla JM. The Campylobacter jejuni porin trimers pack into different lattice types when reconstituted in the presence of lipid. Eur J Biochem 1997; 244:575-9. [PMID: 9119026 DOI: 10.1111/j.1432-1033.1997.t01-1-00575.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Purified major outer membrane protein of Campylobacter jejuni exhibited different classes of molecules by SDS/PAGE and immunoblotting. A high-molecular-mass product (120-140 kDa) was observed under mild conditions of solubilization, a folded monomeric form of 35 kDa was seen when treated at high SDS concentrations and finally, a single band around 45 kDa occurred when the sample was heated to 96 degrees C [Bolla, J. M., Loret, E., Zalewski. M. & Pages, J. M. (1995) J. Bacteriol. 177, 4266-4271]. The high-molecular-mass product was reconstituted into two-dimensional crystals in the presence of phospholipids and Mg2+. The C. jejuni porin required different conditions for successful reconstitution into two-dimensional crystals than the Escherichia coli porin OmpF. Electron microscopy and digital image processing of negatively stained specimens revealed a rectangular lattice with a unit cells size of a = 8.9 nm, b = 14.9 nm, an oblique lattice with a = 8.9 nm, b = 30.1 nm, gamma = 98 degrees, and a trigonal lattice with a = b = 9.6 nm. Projection maps were calculated to a resolution of 2 nm, and exhibited a trimeric protein with three stain-filled indentations.
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Affiliation(s)
- J Zhuang
- M.E. Müller-Institute for Microscopic Structural Biology, Biozentrum of the University of Basel, Switzerland
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Rouquette C, Ripio MT, Pellegrini E, Bolla JM, Tascon RI, Vázquez-Boland JA, Berche P. Identification of a ClpC ATPase required for stress tolerance and in vivo survival of Listeria monocytogenes. Mol Microbiol 1996; 21:977-87. [PMID: 8885268 DOI: 10.1046/j.1365-2958.1996.641432.x] [Citation(s) in RCA: 102] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We identified a new chromosomal locus involved in the virulence of the facultative intracellular pathogen Listeria monocytogenes. This locus displays the same genetic organization as that of the clpC/mecB locus of Bacillus subtilis. It contains a thermoregulated operon of four genes, whose transcription is upregulated at 42 degrees C. The last gene of this operon is clpC, which encodes a protein of 826 amino acid residues, identified as a ClpC ATPase, sharing a strong peptide sequence identity (78%) with ClpC/MecB of B. subtilis. Tn917 insertions inactivating the entire operon, or only clpC, gave mutants highly susceptible to stress, including iron limitation, elevated temperatures and high osmolarity. The virulence of these mutants was severely impaired in the mouse. A clpC insertional mutant was also restricted in its capacity to grow in bone-marrow-derived macrophages. These results demonstrate that the ClpC ATPase of L. monocytogenes is a general stress protein involved in intracellular growth and in vivo survival of this pathogen in host tissues.
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Affiliation(s)
- C Rouquette
- INSERM U 411, Faculté de Médecine Necker, Paris, France
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49
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Abstract
With the recent resolution of the crystal structures of several bacterial porins, it is worthwhile to define the generality of their organization throughout the Enterobacteriaceae. The distribution of specific epitopes was analysed among various Gram-negative bacterial porins using anti-peptide antibodies specific to exposed, transmembrane spanning, or pore-forming regions of Escherichia coli porins. Anti-peptide antibodies which recognized the exposed epitopes indicated a great variability among the bacterial porins analysed. Interestingly, an antigenic site located in the internal loop L3 constricting the pore diameter was present in the majority of the bacterial porins tested. Two epitopes located in domains involved in subunit interaction were also highly conserved. The presence of these common peptides suggested a conservation of specific regions involved in the functional organization of the enterobacterial porins.
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Affiliation(s)
- V Simonet
- Enveloppe et permeation chez les Enterobacteries, France
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50
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Abstract
A bank of Tn917-insertional mutants from the facultative intracellular pathogen Listeria monocytogenes was screened by an original method based on bacterial growth on synthetic medium under iron-limiting conditions. One mutant, whose in vitro growth in synthetic medium was specifically dependent upon the availability of iron in its environment, was isolated and characterized. The insertional event occurred in a non-coding region, upstream of a rrn operon and located within a 1100-kb NotI fragment of the physical map, where the virulence genes already identified in L. monocytogenes were also present. Protein analysis by SDS-PAGE revealed a pleiotropic effect of the insertional event on cell-associated proteins, suggesting a polar effect of the transposon on adjacent unknown gene(s). The virulence in the mouse of this mutant was strongly impaired, although it was capable in vitro of growing intracellularly and of spreading from cell to cell, as shown by the production of lytic plaques on cell culture.
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Affiliation(s)
- C Rouquette
- INSERM U.411, Faculté de Médecine Necker-Enfants Malades, Paris, France
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