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Jenul C, Keim KC, Jens JN, Zeiler MJ, Schilcher K, Schurr MJ, Melander C, Phelan VV, Horswill AR. Pyochelin biotransformation by Staphylococcus aureus shapes bacterial competition with Pseudomonas aeruginosa in polymicrobial infections. Cell Rep 2023; 42:112540. [PMID: 37227819 PMCID: PMC10592502 DOI: 10.1016/j.celrep.2023.112540] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 03/29/2023] [Accepted: 05/03/2023] [Indexed: 05/27/2023] Open
Abstract
Pseudomonas aeruginosa and Staphylococcus aureus are among the most frequently isolated bacterial species from polymicrobial infections of patients with cystic fibrosis and chronic wounds. We apply mass spectrometry guided interaction studies to determine how chemical interaction shapes the fitness and community structure during co-infection of these two pathogens. We demonstrate that S. aureus is equipped with an elegant mechanism to inactivate pyochelin via the yet uncharacterized methyltransferase Spm (staphylococcal pyochelin methyltransferase). Methylation of pyochelin abolishes the siderophore activity of pyochelin and significantly lowers pyochelin-mediated intracellular reactive oxygen species (ROS) production in S. aureus. In a murine wound co-infection model, an S. aureus mutant unable to methylate pyochelin shows significantly lower fitness compared with its parental strain. Thus, Spm-mediated pyochelin methylation is a mechanism to increase S. aureus survival during in vivo competition with P. aeruginosa.
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Affiliation(s)
- Christian Jenul
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Genetics and Genome Biology, University of Leicester, Leicester LE1 7RH, UK
| | - Klara C Keim
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Justin N Jens
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Michael J Zeiler
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Katrin Schilcher
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Genetics and Genome Biology, University of Leicester, Leicester LE1 7RH, UK
| | - Michael J Schurr
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Christian Melander
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Vanessa V Phelan
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045, USA.
| | - Alexander R Horswill
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Veterans Affairs, Eastern Colorado Health Care System, Aurora, CO 80045, USA.
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Moynié L, Hoegy F, Milenkovic S, Munier M, Paulen A, Gasser V, Faucon AL, Zill N, Naismith JH, Ceccarelli M, Schalk IJ, Mislin GLA. Hijacking of the Enterobactin Pathway by a Synthetic Catechol Vector Designed for Oxazolidinone Antibiotic Delivery in Pseudomonas aeruginosa. ACS Infect Dis 2022; 8:1894-1904. [PMID: 35881068 DOI: 10.1021/acsinfecdis.2c00202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Enterobactin (ENT) is a tris-catechol siderophore used to acquire iron by multiple bacterial species. These ENT-dependent iron uptake systems have often been considered as potential gates in the bacterial envelope through which one can shuttle antibiotics (Trojan horse strategy). In practice, siderophore analogues containing catechol moieties have shown promise as vectors to which antibiotics may be attached. Bis- and tris-catechol vectors (BCVs and TCVs, respectively) were shown using structural biology and molecular modeling to mimic ENT binding to the outer membrane transporter PfeA in Pseudomonas aeruginosa. TCV but not BCV appears to cross the outer membrane via PfeA when linked to an antibiotic (linezolid). TCV is therefore a promising vector for Trojan horse strategies against P. aeruginosa, confirming the ENT-dependent iron uptake system as a gate to transport antibiotics into P. aeruginosa cells.
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Affiliation(s)
- Lucile Moynié
- The Rosalind Franklin Institute, Harwell Campus, Oxfordshire OX11 0QS, U.K
| | - Françoise Hoegy
- CNRS, UMR7242 Biotechnologie et Signalisation Cellulaire, 300 Boulevard Sébastien Brant, F-67412 Illkirch, France.,Université de Strasbourg, Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg (IREBS), 300 Boulevard Sébastien Brant, F-67412 Illkirch, France
| | - Stefan Milenkovic
- Department of Physics, University of Cagliari, 09042 Monserrato, Italy
| | - Mathilde Munier
- CNRS, UMR7242 Biotechnologie et Signalisation Cellulaire, 300 Boulevard Sébastien Brant, F-67412 Illkirch, France.,Université de Strasbourg, Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg (IREBS), 300 Boulevard Sébastien Brant, F-67412 Illkirch, France
| | - Aurélie Paulen
- CNRS, UMR7242 Biotechnologie et Signalisation Cellulaire, 300 Boulevard Sébastien Brant, F-67412 Illkirch, France.,Université de Strasbourg, Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg (IREBS), 300 Boulevard Sébastien Brant, F-67412 Illkirch, France
| | - Véronique Gasser
- CNRS, UMR7242 Biotechnologie et Signalisation Cellulaire, 300 Boulevard Sébastien Brant, F-67412 Illkirch, France.,Université de Strasbourg, Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg (IREBS), 300 Boulevard Sébastien Brant, F-67412 Illkirch, France
| | - Aline L Faucon
- CNRS, UMR7242 Biotechnologie et Signalisation Cellulaire, 300 Boulevard Sébastien Brant, F-67412 Illkirch, France.,Université de Strasbourg, Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg (IREBS), 300 Boulevard Sébastien Brant, F-67412 Illkirch, France
| | - Nicolas Zill
- CNRS, UMR7242 Biotechnologie et Signalisation Cellulaire, 300 Boulevard Sébastien Brant, F-67412 Illkirch, France.,Université de Strasbourg, Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg (IREBS), 300 Boulevard Sébastien Brant, F-67412 Illkirch, France
| | - James H Naismith
- The Rosalind Franklin Institute, Harwell Campus, Oxfordshire OX11 0QS, U.K.,Division of Structural Biology, Wellcome Trust Centre of Human Genomics, 7 Roosevelt Drive, Oxford OX3 7BN, U.K
| | - Matteo Ceccarelli
- Department of Physics, University of Cagliari, 09042 Monserrato, Italy.,IOM/CNR, Sezione di Cagliari, University of Cagliari, 09042 Monserrato, Italy
| | - Isabelle J Schalk
- CNRS, UMR7242 Biotechnologie et Signalisation Cellulaire, 300 Boulevard Sébastien Brant, F-67412 Illkirch, France.,Université de Strasbourg, Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg (IREBS), 300 Boulevard Sébastien Brant, F-67412 Illkirch, France
| | - Gaëtan L A Mislin
- CNRS, UMR7242 Biotechnologie et Signalisation Cellulaire, 300 Boulevard Sébastien Brant, F-67412 Illkirch, France.,Université de Strasbourg, Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg (IREBS), 300 Boulevard Sébastien Brant, F-67412 Illkirch, France
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