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Streptococcus pneumoniae

ABSTRACT: Invasive Streptococcus pneumoniae genome sequencing project

PROVIDER: PRJDB15997 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	DRR483135_1.fastq.gz	Fastqsanger.gz
	DRR483135_2.fastq.gz	Fastqsanger.gz
	DRR483136_1.fastq.gz	Fastqsanger.gz
	DRR483136_2.fastq.gz	Fastqsanger.gz

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Streptococcus pneumoniae

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Project description:Mouse blood transcriptome after infection with Influenza A virus (H1N1, PR/8/34, mouse-adapted) and Streptococcus pneumoniae (serotype 19F, strain BHN 100) Results: Differentially expressed genes were observed after single and co-infection Project: COST_mouse_2021

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Project description:Zn and Mn are essential micronutrients for many bacteria including Streptococcus pneumoniae. While Zn performs vital structural or catalytic roles in certain proteins, in excess, Zn can inhibit Mn uptake by S. pneumoniae and displace, but not functionally replace Mn from key enzymes including superoxide dismutase A (SodA). Here, we show that the Ccn small regulatory RNAs promote S. pneumoniae Mn uptake and resistance to the oxidative stress. Furthermore, we demonstrate that these small regulatory RNAs modulate the ability of S. pneumoniae to cause invasive pneumonia. Altogether, these findings reveal a new layer of regulation of S. pneumoniae Zn and Mn homeostasis and suggest that there are factors in addition to known transporters that modulate intracellular Mn levels.

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Project description:This SuperSeries is composed of the following subset Series: GSE31815: ccpA mutant compared to D39 wild-type in Streptococcus pneumoniae in CDM + Glucose at MID-log growth phase GSE31816: ccpA mutant compared to D39 wild-type in Streptococcus pneumoniae in CDM + GLucose at transition-phase of growth (TS) GSE31817: ccpA mutant compared to D39 wild-type in Streptococcus pneumoniae in CDM + Galactose at MID-log growth phase GSE31818: ccpA mutant compared to D39 wild-type in Streptococcus pneumoniae in CDM + galactose at transition-phase of growth (TS) Refer to individual Series

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Transcriptional response of Streptococcus pneumoniae to copper

Project description:Transcriptome comparison of the Streptococcus pneumoniae D39 wild-type grown in CDM with 0mM to 0.05 mM copper.

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Project description:Galactose promotes pneumococcal biofilms in vivo 15 mRNA profiles of Streptococcus pneumoniae samples that were grown under different conditions were generated using deep sequencing.

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Serotyping of Streptococcus pneumoniae based on capsular genes polymorphisms

Project description:Diagnostic primer extension assay to serotype Streptococcus pneumoniae. Assay validation. Background: Monitoring of Streptococcus pneumoniae serotype epidemiology is essential since serotype replacement is a concern when introducing new polysaccharide-conjugate vaccines. To simplify S. pneumoniae serotyping, a novel PCR-based automated microarray assay was developed to assist in the tracking of the serotypes. Results: Autolysin (lytA), pneumolysin (ply) and eight genes located in the capsular operon (cps) were amplified using multiplex PCR. This step was followed by a tagged fluorescent primer extension step targeting serotype-specific polymorphisms. The tagged primers were then hybridized to a microarray. Results were exported to an expert system that transforms genetic typing data into capsular serotype identification. The assay was validated on 166 cultured S. pneumoniae samples from 63 different serotypes as determined by the Quellung method. In addition, the assay was tested on clinical specimens including 43 cerebrospinal fluid samples from patients with meningitidis and 59 nasopharyngeal aspirates from bacterial pneumonia patients. The assay presented with no cross-reactivity for 24 relevant bacterial species found in these types of samples. The limit of detection for serotyping and S. pneumoniae detection was 100 genome equivalent per reaction. Conclusion: This automated assay is amenable to clinical testing and does not require any culturing of the samples. The assay will be useful for the evaluation of serotype prevalence changes after new conjugate vaccines introduction.

2013-12-31 | GSE45865 | GEO

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Transcriptional response of Streptococcus pneumoniae D39 to Zinc

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