Project description:Lactiplantibacillus pentosus AWA1501 was isolated from the traditional Japanese tea Awa-bancha. Previous studies have reported that this species becomes predominant after the anaerobic fermentation process. In this study, we report the whole-genome sequence of this strain. The draft genome sequence comprises 3,714,221 nucleotides and 3,374 coding DNA sequences, with an average G+C content of 46.02%.
Project description:In this study, we determined whether pre-adapting Lactiplantibacillus pentosus strains, isolated from Aloreña green table olives, to vegetable-based edible oils improved their robustness and functionality; this may have great importance on their stress response during fermentation, storage, and digestion. Pre-adapting the strains to the corresponding oils significantly increased their probiotic functionality (e.g., auto-aggregation, co-aggregation with pathogens, and mucin adhesion), although results depended on the strain and the oil used for pre-adaptation. As such, we selected olive-adapted (TO) L. pentosus AP2-16, which exhibited improved functionality, and subjected it to transcriptomic profiling with the aim to understand the molecular mechanisms involved in the adaptation and the increased functionality. Global transcriptomic analysis of oil-adapted (olive or almond) and non-adapted (control) L. pentosus AP2-16 realized that 3,259 genes were expressed, with 2,779 mapped to the reference database. Comparative transcriptomic analysis showed that 125 genes (olive vs. control) and 108 genes (olive vs. almond) became significantly differentially expressed. TO L. pentosus AP2-16 responded by rerouting its metabolic pathways to balance energy production and storage, cell growth and survivability, host interactions (glycoconjugates), and other physiological features. As such, the pre-adaptation of lactobacilli with olive oil switches their transcriptional network to regulate robustness and functionality, possibly representing a novel approach toward the design and manufacture of probiotic products with improved stability and functionality.
Project description:Metabolic syndrome a lifestyle disease, where diet and gut microbiota play a prodigious role in its initiation and progression. Prophylactic bio-interventions employing probiotics and prebiotics offer an alternate nutritional approach towards attenuating its progression. The present study aimed to evaluate the protective efficacy of a novel synbiotic (Lactiplantibacillus pentosus GSSK2 + isomalto-oligosaccharides) in comparison to orlistat in an experimental model of metabolic syndrome. It was observed that supplementation of synbiotic for 12 weeks to Sprague Dawley rats fed with high fat diet (HFD), ameliorated the morphometric parameters i.e. weight gain, abdominal circumference, Lee's index, BMI and visceral fat deposition along with significantly increased fecal Bacteroidetes to Firmicutes ratio, elevated population of Lactobacillus spp., Akkermansia spp., Faecalibacterium spp., Roseburia spp. and decreased Enterobacteriaceae compared with HFD animals. Additionally, synbiotic administration to HFD animals exhibited improved glucose clearance, lipid biomarkers, alleviated oxidative stress, prevented leaky gut phenotype, reduced serum lipopolysaccharides and modulated the inflammatory, lipid and glucose metabolism genes along with restored histomorphology of adipose tissue, colon and liver compared with HFD animals. Taken together, the study highlights the protective potential of synbiotic in comparison with its individual components in ameliorating HFD-induced metabolic complications.
Project description:This project uses TMT labeling quantitative proteomics technology to carry out research, and a total of 898 proteins have been identified. Differentially expressed proteins were screened according to the criteria of expression fold change of more than 1.5-fold (up-regulation more than 1.5-fold or down-regulation less than 0.67) and P value<0.05. Among them, taking the comparison group Control VS H2O2 as an example, there were 31 up-regulated differentially expressed proteins and 81 down-regulated differentially expressed proteins. Through GO enrichment and KEGG pathway analysis, it was found that these differentially expressed proteins are mainly involved in important biological processes such as single-organism metabolic process, small molecule metabolic process, organophosphate metabolic process, organophosphate biosynthetic process and carbohydrate derivative biosynthetic process, and are mainly involved in the regulation of Metabolic pathways, Fructose and mannose metabolism, Oxidative phosphorylation, Tyrosine and Degradation of aromatic compounds and other important KEGG metabolic pathways.