期刊
MICROORGANISMS
卷 9, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/microorganisms9040829
关键词
genomic characterization; phylogenomic; probiotic; Lactobacillus delbrueckii; acid and bile tolerance; Nfkb1 gene expression; surface proteins; bacteriocin
类别
资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [312045/2020-4]
CIDCA 133 is reported as a potential probiotic strain with immunomodulatory properties and antibacterial activity. It can survive different stress conditions and produce beneficial effects on the host through specific genes and molecular mechanisms.
Lactobacillus delbrueckii subsp. lactis CIDCA 133 (CIDCA 133) has been reported as a potential probiotic strain, presenting immunomodulatory properties. This study investigated the possible genes and molecular mechanism involved with a probiotic profile of CIDCA 133 through a genomic approach associated with in vitro and in vivo analysis. Genomic analysis corroborates the species identification carried out by the classical microbiological method. Phenotypic assays demonstrated that the CIDCA 133 strain could survive acidic, osmotic, and thermic stresses. In addition, this strain shows antibacterial activity against Salmonella Typhimurium and presents immunostimulatory properties capable of upregulating anti-inflammatory cytokines Il10 and Tgfb1 gene expression through inhibition of Nfkb1 gene expression. These reported effects can be associated with secreted, membrane/exposed to the surface and cytoplasmic proteins, and bacteriocins-encoding genes predicted in silico. Furthermore, our results showed the genes and the possible mechanisms used by CIDCA 133 to produce their beneficial host effects and highlight its use as a probiotic microorganism.
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