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Li X, Busch LM, Piersma S, Wang M, Liu L, Gesell Salazar M, Surmann K, Mäder U, Völker U, Buist G, van Dijl JM. Functional and Proteomic Dissection of the Contributions of CodY, SigB and the Hibernation Promoting Factor HPF to Interactions of Staphylococcus aureus USA300 with Human Lung Epithelial Cells. J Proteome Res 2024; 23:4742-4760. [PMID: 39302699 PMCID: PMC11459534 DOI: 10.1021/acs.jproteome.4c00724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2024] [Accepted: 09/11/2024] [Indexed: 09/22/2024]
Abstract
Staphylococcus aureus is a leading cause of severe pneumonia. Our recent proteomic investigations into S. aureus invasion of human lung epithelial cells revealed three key adaptive responses: activation of the SigB and CodY regulons and upregulation of the hibernation-promoting factor SaHPF. Therefore, our present study aimed at a functional and proteomic dissection of the contributions of CodY, SigB and SaHPF to host invasion using transposon mutants of the methicillin-resistant S. aureus USA300. Interestingly, disruption of codY resulted in a "small colony variant" phenotype and redirected the bacteria from (phago)lysosomes into the host cell cytoplasm. Furthermore, we show that CodY, SigB and SaHPF contribute differentially to host cell adhesion, invasion, intracellular survival and cytotoxicity. CodY- or SigB-deficient bacteria experienced faster intracellular clearance than the parental strain, underscoring the importance of these regulators for intracellular persistence. We also show an unprecedented role of SaHPF in host cell adhesion and invasion. Proteomic analysis of the different mutants focuses attention on the CodY-perceived metabolic state of the bacteria and the SigB-perceived environmental cues in bacterial decision-making prior and during infection. Additionally, it underscores the impact of the nutritional status and bacterial stress on the initiation and progression of staphylococcal lung infections.
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Affiliation(s)
- Xiaofang Li
- Department
of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB Groningen, The Netherlands
| | - Larissa M. Busch
- Interfaculty
Institute for Genetics and Functional Genomics, Department Functional
Genomics, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Sjouke Piersma
- Department
of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB Groningen, The Netherlands
| | - Min Wang
- Department
of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB Groningen, The Netherlands
| | - Lei Liu
- Department
of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB Groningen, The Netherlands
| | - Manuela Gesell Salazar
- Interfaculty
Institute for Genetics and Functional Genomics, Department Functional
Genomics, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Kristin Surmann
- Interfaculty
Institute for Genetics and Functional Genomics, Department Functional
Genomics, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Ulrike Mäder
- Interfaculty
Institute for Genetics and Functional Genomics, Department Functional
Genomics, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Uwe Völker
- Interfaculty
Institute for Genetics and Functional Genomics, Department Functional
Genomics, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Girbe Buist
- Department
of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB Groningen, The Netherlands
| | - Jan Maarten van Dijl
- Department
of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB Groningen, The Netherlands
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Investigation of the effect of transition metals (MN, CO, GD) on the spatial structure of fibrinopeptide B by NMR spectroscopy. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Dimerization of long hibernation promoting factor from Staphylococcus aureus: Structural analysis and biochemical characterization. J Struct Biol 2020; 209:107408. [DOI: 10.1016/j.jsb.2019.107408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 10/22/2019] [Accepted: 10/24/2019] [Indexed: 11/22/2022]
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