RT Journal Article
T1 Exopolysaccharide Producing Bifidobacterium animalis subsp. lactis Strains Modify the Intestinal Microbiota and the Plasmatic Cytokine Levels of BALB/c Mice According to the Type of Polymer Synthesized.
A1 Sabater, Carlos
A1 Molinero-Garcia, Natalia
A1 Castro-Bravo, Nuria
A1 Diez-Echave, Patricia
A1 Hidalgo-Garcia, Laura
A1 Delgado, Susana
A1 Sanchez, Borja
A1 Galvez, Julio
A1 Margolles, Abelardo
A1 Ruas-Madiedo, Patricia
K1 bifidobacteria
K1 cytokine
K1 exopolysaccharide
K1 immune response
K1 mice
K1 microbiota
AB Bacteria-host interactions are mediated by different microbial associated molecular patterns which are most often surface structures such as, among others, exopolysaccharides (EPSs). In this work, the capability of two isogenic EPS-producing Bifidobacterium animalis subsp. lactis strains to modulate the gut microbiota of healthy mice, was assessed. Each strain produces a different type of polymer; the ropy strain S89L synthesized a rhamnose-rich, high-molecular weight EPS in highest abundance than the non-ropy DMS10140 one. BALB/c mice were orally fed for 10 days with milk-bifidobacterial suspensions and followed afterward for 7 post-intervention days (wash-out period). The colonic content of mice was collected in several sampling points to perform a metataxonomic analysis. In addition, the influence of specific microbial clades, apparently stimulated by the ropy and non-ropy strains, on mouse plasmatic cytokine levels was investigated through hierarchical association testing. Analysis of 16S rRNA gene sequences showed that the abundance of Firmicutes phylum significantly increased 7 days after cessing the treatment with both strains. The relative abundance of Alloprevotella genus also rose, but after shorter post-treatment times (3 days for both DMS10140 and S89L strains). Some bacterial clades were specifically modulated by one or another strain. As such, the non-ropy DMS10140 strain exerted a significant influence on Intestinomonas genus, which increased after 4 post-administration days. On the other hand, feeding with the ropy strain S89L led to an increase in sequences of Faecalibaculum genus at 4 post-treatment days, while the abundance of Erysipelotrichaceae and Lactobacillaceae families increased for prolonged times. Association testing revealed that several lactobacilli and bifidobacterial significantly stimulated by ropy S89L strain were positively associated with the levels of certain cytokines, including IL-5 and IL-27. These results highlight relevant changes in mice gut microbiota produced after administration of the ropy S89L strain that were associated to a potential immune modulation effect.
PB Frontiers Research Foundation
SN 1664-302X
YR 2020
FD 2020-11-05
LK http://hdl.handle.net/10668/16799
UL http://hdl.handle.net/10668/16799
LA en
NO Sabater C, Molinero-García N, Castro-Bravo N, Diez-Echave P, Hidalgo-García L, Delgado S, et  al. Exopolysaccharide Producing Bifidobacterium animalis subsp. lactis Strains Modify the Intestinal Microbiota and the Plasmatic Cytokine Levels of BALB/c Mice According to the Type of Polymer Synthesized. Front Microbiol. 2020 Nov 26;11:601233.
DS RISalud
RD Apr 12, 2025