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Pivotal Roles for Ribonucleases in Streptococcus pneumoniae Pathogenesis

ABSTRACT: Pivotal Roles for Ribonucleases in Streptococcus pneumoniae Pathogenesis

PROVIDER: PRJNA725411 | ENA |

REPOSITORIES: ENA

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Pivotal Roles for Ribonucleases in Streptococcus pneumoniae Pathogenesis

Project description:RNases perform indispensable functions in regulating gene expression in many bacterial pathogens by processing and/or degrading RNAs. Despite the pivotal role of RNases in regulating bacterial virulence factors, the functions of RNases have not yet been studied in the major human respiratory pathogen Streptococcus pneumoniae (pneumococcus). Here, we sought to determine the impact of two conserved RNases, the endoribonuclease RNase Y and exoribonuclease polynucleotide phosphorylase (PNPase), on the physiology and virulence of S. pneumoniae serotype 2 strain D39. We report that RNase Y and PNPase are essential for pneumococcal pathogenesis as both deletion mutants showed strong attenuation of virulence in murine models of invasive pneumonia. Genome-wide transcriptomic analysis revealed that nearly 200 mRNA transcripts were significantly up-regulated, whereas the abundance of several pneumococcal sRNAs, including the Ccn (CiaR Controlled Noncoding RNA) sRNAs, were altered in the ∆rny mutant relative to the wild-type strain. Additionally, lack of RNase Y resulted in pleiotropic phenotypes that included defects in pneumococcal cell morphology and growth in vitro. In contrast, Dpnp mutants showed no growth defect in vitro, but differentially expressed a total of 40 transcripts including the tryptophan biosynthesis operon genes and numerous 5’-cis-acting regulatory RNAs, a majority of which were previously shown to impact pneumococcal disease progression in mice using the serotype 4 strain TIGR4. Altogether our data suggest that RNase Y exerts a global impact on pneumococcal physiology, while PNPase-mediates virulence phenotypes, likely through sRNA regulation.

2021-09-02 | GSE173392 | GEO

Pivotal Roles for Ribonucleases in Streptococcus pneumoniae Pathogenesis.

Project description: Not available

| S-EPMC8546594 | biostudies-literature

CcpA Ensures Optimal Metabolic Fitness of Streptococcus pneumoniae

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

2011-09-30 | E-GEOD-31819 | biostudies-arrayexpress

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.

2011-07-10 | GSE30413 | GEO

Transcriptional response of Streptococcus pneumoniae D39 to Zinc

Project description:Transcriptome comparison of the Streptococcus pneumoniae D39 wild-type grown in CDM Plus 0mM Zn2+ to grown in CDM plus 0.2 mM Zn2+.

2011-05-13 | GSE29235 | GEO

Bioplatforms Australia: Antibiotic Resistant Sepsis Pathogens Framework Initiative - Streptococcus pneumoniae 947

Project description:The Antibiotic Resistant Sepsis Pathogens Framework Initiative aims to develop a framework dataset of 5 sepsis pathogens (5 strains each) using an integrated application of genomic, transcriptomic, metabolomic and proteomic technologies. The pathogens included in this initiative are: Escherichia coli, Klebsiella pneumoniae complex, Staphylococcus aureus, Streptococcus pyogenes, and Streptococcus pneumoniae. This submission pertains to strain 947.

2021-07-01 | GSE152965 | GEO

Bioplatforms Australia: Antibiotic Resistant Sepsis Pathogens Framework Initiative - Streptococcus pneumoniae 4496

2021-07-01 | GSE152828 | GEO

Bioplatforms Australia: Antibiotic Resistant Sepsis Pathogens Framework Initiative - Streptococcus pneumoniae 4559

2021-07-01 | GSE152827 | GEO

Transcriptional response of Streptococcus pneumoniae D39 to Maltose

Project description:Transcriptome comparison of the Streptococcus pneumoniae D39 wild-type grown in MM17 (0.5 % (w/v) Maltose + M17) to grown in GM17 (0.5 % (w/v) Glucose + M17).

2015-04-23 | GSE65549 | GEO

N-acetylgalactosamine Mediated Regulation of the aga Operon by AgaR in Streptococcus pneumoniae

Project description:Three Microarray comparisons have been preformed in this study. 1- Transcriptome comparison of the Streptococcus pneumoniae D39 wild type grown in M17 medium + 0.5 % (w/v) NAGa (NAGaM17) to M17 medium + 0.5 % (w/v) glucose (GM17) (GSM2372597 and GSM2372598). 2- Transcriptome comparison of the Streptococcus pneumoniae D39 ΔagaR to D39 wild type grown in M17 medium + 0.5 % (w/v) glucose (GM17) (GSM2372599 and GSM2372600). 3- Transcriptome comparison of the Streptococcus pneumoniae D39 ΔccpA to D39 wild type grown in M17 medium + 0.5 % (w/v) NAGa (NAGaM17) (GSM2290636 and GSM2290637).

2016-11-02 | GSE86008 | GEO

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