{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T23:51:32Z","timestamp":1792799492662,"version":"4.5.0"},"reference-count":106,"publisher":"Oxford University Press (OUP)","issue":"1","license":[{"start":{"date-parts":[[2025,11,4]],"date-time":"2025-11-04T00:00:00Z","timestamp":1762214400000},"content-version":"vor","delay-in-days":307,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"German Center of Infection Research","award":["TTU 08.708_00"],"award-info":[{"award-number":["TTU 08.708_00"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,1,2]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The human nasal microbiome can serve as a reservoir for pathogens. In particular, the opportunistic pathogen Staphylococcus aureus can be a member of the nasal microbiome increasing the risk of subsequent infections. The nasal carriage of S. aureus is known to be positively and negatively impacted by nonpathogenic species, suggesting interactions between the pathogen and commensals, but the underlying molecular mechanism remains largely unclear. Herein we demonstrate that S. aureus competes with nasal commensals for the coenzyme biotin. Biotin is crucial for all living organisms and we show that depletion of biotin impairs S. aureus growth and membrane integrity. We found the nasal cavity to be a biotin-limited environment, suggesting competition for the coenzyme within the microbiome. For some nasal commensals and S. aureus, we observed biotin prototrophy and all strains released biotin into the environment. In contrast, other commensals and especially coagulase-negative staphylococci (CoNS) were found to be biotin auxotrophs and strongly reliant on prototrophic strains under biotin-limited conditions. We show that high-affinity biotin uptake systems are used by prototrophic and auxotrophic strains alike and represent crucial factors to optimize competitive fitness of species in co-culture. Together, our data show that biotin-mediated interactions occur between the species of the human nasal microbiome and provide evidence for interspecies competition and co-dependency.<\/jats:p>","DOI":"10.1093\/ismejo\/wraf248","type":"journal-article","created":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T12:41:35Z","timestamp":1762173695000},"source":"Crossref","is-referenced-by-count":10,"title":["Competitive fitness of\n                    <i>Staphylococcus aureus<\/i>\n                    against nasal commensals depends on biotin biosynthesis and acquisition"],"prefix":"10.1093","volume":"19","author":[{"given":"Kevser","family":"Bilici","sequence":"first","affiliation":[{"name":"Interfaculty Institute of Microbiology and Infection Medicine Institute for Medical Microbiology and Hygiene, UKT , 72076 T\u00fcbingen ,","place":["Germany"]},{"name":"Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections , 72076 T\u00fcbingen ,","place":["Germany"]},{"name":"Faculty of Biology, Microbiology, Ludwig-Maximilians-Universit\u00e4t M\u00fcnchen , 82152 Martinsried ,","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1926-0967","authenticated-orcid":false,"given":"David","family":"Gerlach","sequence":"additional","affiliation":[{"name":"Faculty of Biology, Microbiology, Ludwig-Maximilians-Universit\u00e4t M\u00fcnchen , 82152 Martinsried ,","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1335-8901","authenticated-orcid":false,"given":"Laura","family":"Camus","sequence":"additional","affiliation":[{"name":"Interfaculty Institute of Microbiology and Infection Medicine Institute for Medical Microbiology and Hygiene, UKT , 72076 T\u00fcbingen ,","place":["Germany"]},{"name":"Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections , 72076 T\u00fcbingen ,","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6774-2311","authenticated-orcid":false,"given":"Simon","family":"Heilbronner","sequence":"additional","affiliation":[{"name":"Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections , 72076 T\u00fcbingen ,","place":["Germany"]},{"name":"Faculty of Biology, Microbiology, Ludwig-Maximilians-Universit\u00e4t M\u00fcnchen , 82152 Martinsried ,","place":["Germany"]},{"name":"German Center for Infection Research \u201cDZIF\u201d Partnersite T\u00fcbingen , 72076 T\u00fcbingen ,","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2025,11,4]]},"reference":[{"key":"2026081010184577100_ref1","doi-asserted-by":"publisher","first-page":"751","DOI":"10.1016\/S1473-3099(05)70295-4","article-title":"The role of nasal carriage in Staphylococcus aureus 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