Faecalibacterium duncaniae A2-165 regulates the expression of butyrate synthesis, ferrous iron uptake, and stress-response genes based on acetate consumption.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
10 Jan 2024
10 Jan 2024
Historique:
received:
23
06
2023
accepted:
29
12
2023
medline:
11
1
2024
pubmed:
11
1
2024
entrez:
10
1
2024
Statut:
epublish
Résumé
The promising next-generation probiotic Faecalibacterium prausnitzii is one of the most abundant acetate-consuming, butyrate-producing bacteria in the healthy human gut. Yet, little is known about how acetate availability affects this bacterium's gene expression strategies. Here, we investigated the effect of acetate on temporal changes in the transcriptome of F. duncaniae A2-165 cultures using RNA sequencing. We compared gene expression patterns between two growth phases (early stationary vs. late exponential) and two acetate levels (low: 3 mM vs. high: 23 mM). Only in low-acetate conditions, a general stress response was activated. In high-acetate conditions, there was greater expression of genes related to butyrate synthesis and to the importation of B vitamins and iron. Specifically, expression was strongly activated in the case of the feoAABC operon, which encodes a FeoB ferrous iron transporter, but not in the case of the feoAB gene, which encodes a second putative FeoAB transporter. Moreover, excess ferrous iron repressed feoB expression but not feoAB. Lastly, FeoB but not FeoAB peptides from strain A2-165 were found in abundance in a healthy human fecal metaproteome. In conclusion, we characterized two early-stationary transcriptomes based on acetate consumption and this work highlights the regulation of feoB expression in F. duncaniae A2-165.
Identifiants
pubmed: 38200051
doi: 10.1038/s41598-023-51059-3
pii: 10.1038/s41598-023-51059-3
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
987Subventions
Organisme : French funding agency "Agence Nationale de la Recherche"
ID : ANR-16-CE29-0020, DOPEOS
Organisme : French funding agency "Agence Nationale de la Recherche"
ID : BP-Acetate, Qualiment-Institut Carnot
Organisme : Agence Nationale de la Recherche
ID : ANR-10-INBS-09
Informations de copyright
© 2024. The Author(s).
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