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Brevibacterium sanguinis

ABSTRACT: Whole genome sequencing of Brevibacterium sanguinis, an opportunistic pathogen

PROVIDER: PRJDB2202 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	DRR015772_1.fastq.gz	Fastqsanger.gz
	DRR015772_2.fastq.gz	Fastqsanger.gz
	DRR015773_1.fastq.gz	Fastqsanger.gz
	DRR015773_2.fastq.gz	Fastqsanger.gz

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Proteomic characterization of extracellular membrane vesicles from Streptococcus sanguinis

Project description:Streptococcus sanguinis, a Gram-positive oral commensal, is highly prevalent in the oral cavity and well-characterized for its ability to antagonize oral pathobionts. We have found that production and dissemination of membrane vesicles by S. sanguinis is dependent on environmental and community factors. Co-culture with interacting commensal Corynnyebacterium durum, as well as with the periodontal pathobiont Filifactor alocis had no effect on S. sanguinis vesicle number and size, whereas the periodontal pathobiont Porphyromonas gingivalis abolished S. sanguinis vesicle production. Using both correlation and differential expression analyses to examine the transcriptomic changes underlying vesicle production, we found that differential expression of genes encoding proteins related to the cytoplasmic membrane and peptidoglycan correlate with the abundance of membrane vesicles. Proteomic characterizations of the vesicle cargo identified a variety of proteins, including those predicted to influence host interactions or host immune responses. Cell culture studies of gingival epithelial cells demonstrated that both crude and highly purified membrane vesicles could induce the expression of IL-8, TNF-α, IL-1β, and Gro-α within 6 hours of inoculation at levels comparable to whole cells. OTaken together, our findings suggest that production of membrane vesicles by S. sanguinis is heavily influenced by community and environmental factors, and plays an important role in communication with host cells.

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Effect of Calcium Chloride Concentrations on the Transcriptome of Brevibacterium lines

Project description:A urease positive marine actinobacterium Brevibacterium lines was demonstrated to form and dissolve calcite precipitation in conditions with different concentration of Ca2+. Next-generation sequencing (NGS) was used to analyze the transcriptome of B. lines under 0, 50 and 150 mM Ca2+ after 24 h incubation to discover the differentially expressed genes involved. Results provide insight into the molecular response of B. lines stressed with different concentration of Ca2+.

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ssa_1972-null mutant of Streptococcus sanguinis SK36

Project description:Transcriptional profiling of ssa_1972-null mutant of Streptococcus sanguinis compared with wild type. The ssa_1972 gene was inactivated in Streptococcus sanguinis SK36 and transcriptional profile was compared with wild type SK36. More information can be found at http://www.people.vcu.edu/~pingxu One-condition experiment, M-NM-^Tssa_1972 vs S. sanguinis SK36 cells. Biological replicates: 3 wild type, 3 M-NM-^Tssa_1972, independently grown and harvested. One replicate (one wild type and one M-NM-^Tssa_1972 mixture) per array.

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ssa_1972-null mutant of Streptococcus sanguinis SK36

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