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.

2022-08-12 | PXD032910 | Pride

Transcriptome analyses of aggregating Lactiplantibacillus plantarum

Project description:The transcriptome of L. plantarum strains that aggregate was compared with non-aggregating strains

2021-04-20 | GSE172351 | GEO

The commensal bacterium Lactiplantibacillus plantarum imprints innate memory-like responses in mononuclear phagocytes

Project description:Gut microbiota is a constant source of antigens and stimuli to which the resident immune system has developed tolerance. However, the mechanisms by which mononuclear phagocytes, specifically monocytes/macrophages, cope with these usually pro-inflammatory signals is poorly understood. Here, we show that innate immune memory promotes anti-inflammatory homeostasis using as a model strains of the commensal bacterium, Lactiplantibacillus plantarum. Priming of monocytes/macrophages with bacteria, especially in its live form, enhances bacterial intracellular survival and decreases the release of pro-inflammatory signals to the environment, with lower production of TNF and higher levels of IL-10. Analysis of the transcriptomic landscape of these cells shows downregulation of pathways associated with the production of reactive oxygen species (ROS) and the release of cytokines, chemokines and antimicrobial peptides. Indeed, the induction of ROS prevents memory-induced bacterial survival. In addition, there is a dysregulation in gene expression of several metabolic pathways leading to decreased glycolytic and respiratory rates in memory cells. These data support commensal microbe-specific metabolic changes in innate immune memory cells that might contribute to homeostasis in the gut.

2021-07-06 | GSE159496 | GEO

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