Project description:Identification of proteins contained in extracellular vesicles of Lactiplantibacillus plantarum PCM 2675. Dataset is related to publication http://dx.doi.org/10.20517/evcna.2024.49. This work was financially supported by the National Science Centre, Poland (no. 2021/43/D/NZ6/01464).
Project description:The study evaluates the effect of Lactiplantibacillus plantarum IMC 510® supplementation on anthropometric and biochemical parameters, GM composition and gastrointestinal and general symptoms of overweight/obese subjects.
Project description:This study was conducted to analyze phenotypic and proteomic differences of two Lactiplantibacillus plantarum strains (WCFS1, model strain from human saliva, and CIP104448, stool isolate) when a biofilm was produced under static conditions (well researched), or with the addition of flow (novel).
Project description:The study was conducted on a model of Lactiplantibacillus plantarum, one of the most studied species widely used in the food industry as a probiotic microorganism and/or microbial starter culture. As a result of step-by-step selection from the L. plantarum 8p-a3 strain isolated from the «Lactobacterin» probiotic, the L. plantarum 8p-a3-Clr-Amx strain was obtained, showing increased resistance, compared with the parent strain, to amoxicillin-clavulanic acid (MIC 20 mcg/ml) and clarithromycin (MIC 10 mcg/ml). The L. plantarum strain DMC-S1 was isolated from the intestine of Drosophila melanogaster Canton-S line. Extracellular vesicles of this bacterium can play a significant role in the drug-resistance development and host-microbe interactions.
Project description:Strains of Lactiplantibacillus plantarum treated with lithium chloride to extract non-covalently bound cell wall proteins that were identified by mass spectrometry proteomic analysis.
Project description:The study focuses on the proteomic analysis of the exoproteome and surfaceome of Lactiplantibacillus plantarum CRL681, aiming to explore the molecular mechanisms underlying its antagonistic capacity against enterohemorrhagic Escherichia coli (EHEC). More than 600 proteins were identified by mass spectrometry across both proteomes, of which 285 were characterized as part of the secretome through a detailed analysis with bioinformatics tools and bibliographic references. The analysis of these proteins allowed us to conclude that some of them are involved in functions like energy metabolism, nutrient transport, cell adhesion, genetic information processing, and signaling. Additionally, moonlighting proteins were observed, which possess bacterial adhesion capabilities that may contribute to the L. plantarum CRL681 antagonistic actions against EHEC. This group included ribosomal proteins and peptidoglycan hydrolases, that would be responsible for the EHEC cell lysis observed under in vitro experimental conditions. Furthermore, the co-culture of the CRL681 strain with E. coli revealed differential expression of key proteins, such as the overexpression of glutathione reductase, involved in maintaining redox balance. This proteomic study is a step forward in the understanding of the molecular mechanisms underlying the antagonistic capacity of L. plantarum CRL681 against EHEC.
Project description:Probiotics have been suggested to ameliorate the function of the intestinal epithelial barrier and so have several mediators and receptors of the expanded endocannabinoid system, the endocannabinoidome (eCBome). Here we cocultured three live strains of Lactiplantibacillus plantarum with intestinal epithelial organoids to study their effects on the gut barrier function and the possible involvement of the eCBome in this effect. All three L.plantarum strains variously reduced the trans-epithelial permeability of intestinal organoids and promoted increased mRNA expression of several tight junction proteins and intestinal barrier proteins. Concomitantly, the three strains upregulated the expression of genes encoding biosynthetic enzymes (i.e., NapePLD, Abdh4, Gde1, Daglb) and receptors (i.e., Cnr1, Cnr2, Gpr55, and Ppara), while concurrently downregulating the expression of two essential catabolic enzymes (i.e. Faah and Naaa), involved in the signaling of several eCBome mediators known for their role in regulating the intestinal epithelial barrier. Selective inhibitors of eCBome mediator degrading enzymes FAAH and MAGL, i.e., URB597 and JZL184, increased N-acyl-ethanolamine (NAE) and 2-monoacylglycerol (2-MAG) levels, respectively, enhanced the expression of intestinal epithelial barrier genes and reduced the trans-epithelial permeability of organoids, as for L. plantarum strains. Interestingly, inflammation-induced trans-epithelial permeability in organoids was also reversed by both FAAH and MAGL inhibitors. We surmise that elevated endogenous levels of either NAEs or 2-MAGs promote improvement in small intestine trans-epithelial permeability and that L. plantarum strains may exploit this mechanism to promote these beneficial effects.
