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DNA methylation from a Type I restriction modification system influences gene expression and virulence in Streptococcus pyogenes [PacBio]

ABSTRACT: We used Pacific Biosciences Single Molecule Real-Time sequencing platform to identify modified motifs in an RM deficient strain of Streptococcus pyogenes

ORGANISM(S): Streptococcus pyogenes

PROVIDER: GSE130428 | GEO | 2019/04/30

REPOSITORIES: GEO

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DNA methylation from a Type I restriction modification system influences gene expression and virulence in Streptococcus pyogenes [RNA-seq]

Project description:We used Illumina NGS to measure mRNA levels and perform subsequent differential expression analysis between wild type and RM system deficient strains of Streptococcus pyogenes

2019-04-30 | GSE130427 | GEO

Environmental conditions influence the expression of the Streptococcus pyogenes R28 surface protein promoting the colonization in the female genital tract

Project description:We used Illumina NGS to measure mRNA levels and perform subsequent differential expression analysis between wild type and RM system deficient strains of Streptococcus pyogenes

2019-07-01 | GSE130535 | GEO

DNA methylation from a Type I restriction modification system influences gene expression and virulence in Streptococcus pyogenes.

Project description:DNA methylation is pervasive across all domains of life. In bacteria, the presence of N6-methyladenosine (m6A) has been detected among diverse species, yet the contribution of m6A to the regulation of gene expression is unclear in many organisms. Here we investigated the impact of DNA methylation on gene expression and virulence within the human pathogen Streptococcus pyogenes, or Group A Streptococcus. Single Molecule Real-Time sequencing and subsequent methylation analysis identified 412 putative m6A sites throughout the 1.8 Mb genome. Deletion of the Restriction, Specificity, and Methylation gene subunits (ΔRSM strain) of a putative Type I restriction modification system lost all detectable m6A at the recognition sites and failed to prevent transformation with foreign-methylated DNA. RNA-sequencing identified 20 genes out of 1,895 predicted coding regions with significantly different gene expression. All of the differentially expressed genes were down regulated in the ΔRSM strain relative to the parent strain. Importantly, we found that the presence of m6A DNA modifications affected expression of Mga, a master transcriptional regulator for multiple virulence genes, surface adhesins, and immune-evasion factors in S. pyogenes. Using a murine subcutaneous infection model, mice infected with the ΔRSM strain exhibited an enhanced host immune response with larger skin lesions and increased levels of pro-inflammatory cytokines compared to mice infected with the parent or complemented mutant strains, suggesting alterations in m6A methylation influence virulence. Further, we found that the ΔRSM strain showed poor survival within human neutrophils and reduced adherence to human epithelial cells. These results demonstrate that, in addition to restriction of foreign DNA, gram-positive bacteria also use restriction modification systems to regulate the expression of gene networks important for virulence.

| S-EPMC6597129 | biostudies-literature

Gene expression of GidA mutant Streptococcus pyogenes

Project description:In Streptococcus pyogenes, mutation of GidA results in avirulence despite the same growth rate as the wild type. To understand the basis of this effect, global transcription profiling was conducted. Keywords: Wild type vs. GidA mutant Streptococcus pyogenes

2008-01-10 | GSE9678 | GEO

DNA methylation from a Type I restriction modification system influences gene expression and virulence in Streptococcus pyogenes

Project description:This SuperSeries is composed of the SubSeries listed below.

2019-04-30 | GSE130429 | GEO

Expression analysis of Streptococcus pyogenes NZ131 serR-

Project description:Whole genone expression profile comparing wild-type NZ131 to serR deletion mutant, grown in C-medium Mutants and interpretation are described further in the manuscript to be submitted: LaSarre and Federle, 2010. Title: Regulation and Consequence of Serine Catabolism in Streptococcus pyogenes. A two chip study using total RNA recovered from three separate wild-type cultures of Streptococcus pyogenes NZ131 and three separate mutant cultures of Streptococcus pyogenes NZ131 seR-, pooled following RNA extraction

2010-11-15 | E-GEOD-24860 | biostudies-arrayexpress

The role of Stk in Streptococcus pyogenes

Project description:Transcriptional profile of Streptococcus pyogenes stk mutant strain JRS2516 vs its wild type parent strain MGAS2221

2011-08-01 | GSE28881 | GEO

RNA-seq of Streptococcus pyogenes biofilms

Project description:Study on the effect of exotoxins in biofilm formation in Streptococcus pyogenes.

2018-07-01 | E-MTAB-6874 | biostudies-arrayexpress

Streptococcus pyogenes MGAS5005: control vs heme exposure

Project description:Transcriptional profiling of Streptococcus pyogenes MGAS5005 cells comparing control untreated GAS cells with GAS cells exposed to 4uM heme for 1.5 h

2014-09-16 | GSE61415 | GEO

Effects of RNase Y mutation on operon organization of Streptococcus pyogenes NZ131

Project description:Purpose: RNase Y is a major enzyme responsible for mRNA degradation in Streptococcus pyogenes. The goals of this study are to understand whether RNase Y plays a role in operon transcription of S. pyogenes NZ131 by using RNA-seq analysis. Methods: S. pyogenes mRNA profiles of wild type (WT) and RNase Y mutant (∆rny) were generated by deep sequencing, in duplicate, using Illumina Hiseq 2000. The sequence reads were aligned to the S. pyogenes genome using Bowtie2. The aligned files were sorted to BAM format and indexed using Samtools. The read depth of each base was derived from BAM files using BEDtools. Operon organization of S. pyogenes WT and ∆rny strains were predicted based on base reads. Results: A total of 11 to 12 billion reads were obtained from each sample. More than 99% of these reads were mapped to the S. pyogenes genome. Predictions of operon organization using WT and ∆rny samples showed little difference between the two strains. Conclusions: Our result shows that the mutation of RNase Y does not affect the operon organization of S. pyogenes NZ131.

2017-06-02 | GSE99533 | GEO

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