Differences in carbon metabolic capacity fuel co-existence and plasmid transfer between Salmonella strains in the mouse gut.

Autor:	Gül E; Institute of Microbiology, Department of Biology, ETH Zurich, 8093 Zurich, Switzerland. Electronic address: ersing@ethz.ch., Abi Younes A; Institute of Microbiology, Department of Biology, ETH Zurich, 8093 Zurich, Switzerland., Huuskonen J; Institute of Microbiology, Department of Biology, ETH Zurich, 8093 Zurich, Switzerland., Diawara C; Institute of Microbiology, Department of Biology, ETH Zurich, 8093 Zurich, Switzerland., Nguyen BD; Institute of Microbiology, Department of Biology, ETH Zurich, 8093 Zurich, Switzerland., Maurer L; Institute of Microbiology, Department of Biology, ETH Zurich, 8093 Zurich, Switzerland., Bakkeren E; Institute of Microbiology, Department of Biology, ETH Zurich, 8093 Zurich, Switzerland., Hardt WD; Institute of Microbiology, Department of Biology, ETH Zurich, 8093 Zurich, Switzerland. Electronic address: hardt@micro.biol.ethz.ch.
Jazyk:	angličtina
Zdroj:	Cell host & microbe [Cell Host Microbe] 2023 Jul 12; Vol. 31 (7), pp. 1140-1153.e3. Date of Electronic Publication: 2023 Jun 21.
DOI:	10.1016/j.chom.2023.05.029
Abstrakt:	Antibiotic resistance plasmids can be disseminated between different Enterobacteriaceae in the gut. Here, we investigate how closely related Enterobacteriaceae populations with similar nutrient needs can co-bloom in the same gut and thereby facilitate plasmid transfer. Using different strains of Salmonella Typhimurium (S.Tm SL1344 and ATCC14028) and mouse models of Salmonellosis, we show that the bloom of one strain (i.e., recipient) from very low numbers in a gut pre-occupied by the other strain (i.e., donor) depends on strain-specific utilization of a distinct carbon source, galactitol or arabinose. Galactitol-dependent growth of the recipient S.Tm strain promotes plasmid transfer between non-isogenic strains and between E. coli and S.Tm. In mice stably colonized by a defined microbiota (OligoMM 12 ), galactitol supplementation similarly facilitates co-existence of two S.Tm strains and promotes plasmid transfer. Our work reveals a metabolic strategy used by Enterobacteriaceae to expand in a pre-occupied gut and provides promising therapeutic targets for resistance plasmids spread. Competing Interests: Declaration of interests The authors declare no competing interests. (Copyright © 2023 The Author(s). Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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