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Clostridioides difficile R20291

ABSTRACT: Clostridium difficile R20291 genome sequencing project

PROVIDER: PRJNA38039 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	GCA_000027105.1_sequence_report.txt	Txt

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Clostridioides difficile R20291

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Transcriptomic profile of a Clostridioides difficile rsbW deletion mutant compared to parental R20291 strain

Project description:RNA-seq was conducted to uncover the regulatory roles of RsbW in the lifestyle of Clostridioides difficile strain R20291. RNA were extracted from planktonic cultures, which were grown in BHI-S (Sigma-Aldrich, USA) to early stationary phase (10h). The cells were re-suspended in LETS buffer and lysed using Fast-prep 24 instrument (MP Bioscience) and RNA was extracted using 1 ml Trizol (Ambion, USA). Samples were cleaned and sequenced by Novogene Company Limited, PE150 with approximately 10 million reads per sample. After QC, reads were aligned to R20291 (NC_013316.1) with Bowtie2 and readcounts were generated with Samtools and Bedtools. Differential gene expression analysis was conducted with DESeq2 with a p-value of 0.05, differential gene expression was determined with ± -2 logFC.

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Project description:The incidence of Clostridium difficile infection has been steadily rising over the past decade. Its increased rate is associated with the specific NAP1/BI/027 strains which are “hypervirulent” and have led to several large outbreaks since their emergence. However, the relation between their outbreaks and virulence regulation mechanisms remains unclear. It has been reported that the major virulence factor TcdA and TcdB in C. difficile could be repressed by cysteine. Here, we investigated functional and virulence-associated regulation of C. difficile R20291 in response to cysteine stress by using a time-resolved genome-wide transcriptional analysis. Dramatic changes of gene expression in C. difficile were revealed in functional categories related to transport, metabolism, and regulators under cysteine stress during different phases of growth.

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