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Competition among Nasal Bacteria Suggests a Role for Siderophore-Mediated Interactions in Shaping the Human Nasal Microbiota
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Abstract
Within the nasal cavity, interference competition through antimicrobial production is prevalent. For instance, nasal Staphylococcus species strains can inhibit the growth of other bacteria through the production of nonribosomal peptides and ribosomally synthesized and posttranslationally modified peptides. In contrast, bacteria engaging in exploitation competition modify the external environment to prevent competitors from growing, usually by hindering access to or depleting essential nutrients. As the nasal cavity is a nutrient-limited environment, we hypothesized that exploitation competition occurs in this system. We determined that Corynebacterium propinquum produces an iron-chelating siderophore, and this iron-sequestering molecule correlates with the ability to inhibit the growth of coagulase-negative staphylococci. Furthermore, we found that the genes required for siderophore production are expressed in vivo . Thus, although siderophore production by bacteria is often considered a virulence trait, our work indicates that bacteria may produce siderophores to compete for limited iron in the human nasal cavity.
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“These observations indicate that staphyloferrins function as critically essential sources within the nasal niche, directly shaping microbial equilibrium and colonization patterns [20].”
From Staphylococcus aureus: A Review of the Pathogenesis and Virulence Mechanisms (2025) · cites this paper as [20]
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BackgroundProbiotic Bacteria Reduce Salmonella Typhimurium Intestinal Colonization by Competing for Iron
Deriu, E., Liu, J. Z., Pezeshki, M., Edwards, R. A., Ochoa, R. J., Contreras, H., Libby, S. J., Fang, F. C., & Raffatellu, M. (2013) · Cell Host & Microbe · doi:10.1016/j.chom.2013.06.007 · Cited by 550 · cited 1×
“For instance, siderophore piracy is reported to occur between pathogens and beneficial or commensal bacteria in the human gastrointestinal tract (64, 65), but no such mechanisms within the human nasal cavity have hitherto been reported.”
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Self-citation
Metadata
- Authors
- Stubbendieck, R. M., May, D. S., Chevrette, M. G., Temkin, M. I., Wendt-Pienkowski, E., Cagnazzo, J., Carlson, C. M., Gern, J. E., & Currie, C. R.
- Affiliations
- Department of Bacteriology, University of Wisconsin—Madison, Madison, Wisconsin, USA
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
- Venue
- Applied and Environmental Microbiology
- Publisher
- American Society for Microbiology
- Published
- 2019-05-15
- Volume
- 85
- Issue
- 10
- ISSN
- 0099-2240
- 1098-5336
- Cited by
- 93
- References
- 19
- Language
- en
- Licence
- journals.asm.org/non-commercial-tdm-license (tdm)
- Funders
- HHS | NIH | National Institute of Allergy and Infectious Diseases (U19-AI109673-01)
- HHS | NIH | National Heart, Lung, and Blood Institute (P01 HL070831)
- National Library of Medicine training grant to the Computation and Informatics in Biology and Medicine Training Program (NLM 5T15LM007359)
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- Stubbendieck, R. M., May, D. S., Chevrette, M. G., Temkin, M. I., Wendt-Pienkowski, E., Cagnazzo, J., Carlson, C. M., Gern, J. E., & Currie, C. R. (2019). Competition among Nasal Bacteria Suggests a Role for Siderophore-Mediated Interactions in Shaping the Human Nasal Microbiota. Applied and Environmental Microbiology. https://doi.org/10.1128/aem.02406-18
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