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ABSTRACT: Non-toxigenic Clostridioides difficile isolates

PROVIDER: PRJNA885150 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	SRR21845361_1.fastq.gz	Fastqsanger.gz
	SRR21845361_2.fastq.gz	Fastqsanger.gz
	SRR21845362_1.fastq.gz	Fastqsanger.gz
	SRR21845362_2.fastq.gz	Fastqsanger.gz

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Similar Datasets

Project description:Toxigenic Clostridioides difficile isolates

| PRJNA885148 | ENA

Gene expression dysregulation in whole blood of patients with C. difficile infection

Project description:Background: Clostridioides difficile (C. difficile) is a global threat and has significant implications for individuals and health care systems. Little is known about host molecular mechanisms and transcriptional changes in peripheral immune cells. This is the first gene expression study in whole blood of patients with C. difficile infection. Methods: We took blood and stool samples from patients with toxigenic C. difficile infection (CDI), non-toxigenic C. difficile infection (GDH), inflammatory bowel disease (IBD), diarrhoea from other causes (DC) and healthy controls (HC). We performed transcriptome-wide RNA profiling on peripheral blood to identify diarrhoea common and CDI unique gene sets. Results: Diarrhoea groups upregulated innate immune responses with neutrophils at the epicentre. The common signature associated with diarrhoea was non-specific and shared by various other inflammatory conditions. CDI had a unique 45-gene set reflecting downregulation of humoral and T cell memory functions. Dysregulation of immunometabolic genes was also abundant and linked to immune cell fate during differentiation. Conclusions: Whole transcriptome analysis of white cells in blood from patients with toxigenic C. difficile infection showed that there is an impairment of adaptive immunity and immunometabolism.

2024-11-24 | GSE276395 | GEO

Non-toxigenic C. difficile

Project description:Culture of non-toxigenic Clostridioides difficile

| PRJEB62683 | ENA

Project description:Non-toxigenic Clostridioides difficile strain T7

| PRJNA826427 | ENA

Mouse slurry colons 2 weeks

Project description:Defining the complex role of the microbiome in colorectal cancer (CRC) and the discovery of novel, pro-tumorigenic microbes are areas of active investigation. In the present study, culturing and reassociation experiments revealed that toxigenic strains of Clostridioides difficile drove the tumorigenic phenotype of a subset of CRC patient-derived mucosal slurries in germ-free ApcMin/+ mice. Tumorigenesis was dependent on the C. difficile toxin TcdB and was associated with induction of Wnt signaling, reactive oxygen species, and pro-tumorigenic mucosal immune responses marked by infiltration of activated myeloid cells and interleukin-17 (IL-17)-producing lymphoid and innate lymphoid cell subsets. In vitro, purified TcdB directly induced DNA strand breaks at low picomolar concentrations. These findings suggest that chronic colonization with toxigenic C. difficile is a potential driver of CRC in patients. Comparing scRNA-seq from mouse colon tissue 2 weeks after inoculation with different bacterial slurries

2022-05-27 | GSE200969 | GEO

Toxigenic C. difficile

Project description:Culture of toxigenic Clostridioides difficile

| PRJEB65717 | ENA

Clostridioides difficile: R20291_pMTL84151 transconjugant (C) vs. R20291_pMTL84151-03890 (T1)

Project description:Gene expression level of Clostridioides difficile (C. difficile) strain R20291 comparing control C. difficile carring pMTL84151 as vector plasmid with C. difficile conjugated with a pMTL84151-03890 gene. Goal was to determine the effects of 03890 gene conjugation on C. difficile strain R20291 gene expression.

2023-11-30 | GSE219066 | GEO

Dual RNA-seq identifies proteins and pathways required for Clostridioides difficile colonisation

Project description:Clostridioides difficile interactions with the gut mucosa are crucial for colonisation and establishment of infection, however key infection events during the establishment of disease are still poorly defined. To better understand the initial events that occur during C. difficile colonisation, we employed a dual RNA-sequencing approach to study the host and bacterial transcriptomic profiles during C. difficile infection in a dual-environment in vitro human gut model. Temporal changes in gene expression were analysed over 3-24h post infection and comparisons were made with uninfected controls.

2023-03-23 | E-MTAB-12660 | biostudies-arrayexpress

Characterizing metabolic drivers of Clostridioides difficile infection with activity-based hydrazine probes

Project description:Many enzymes require post-translational modifications or cofactor machinery for primary function. As these catalytically essential moieties are highly regulated, they act as dual sensors and chemical handles for context-dependent metabolic activity. Clostridioides difficile is a major nosocomial pathogen that infects the colon. Energy generating metabolism, particularly through amino acid Stickland fermentation, is central to colonization and persistence of this pathogen during infection. Here using activity-based protein profiling (ABPP), we revealed Stickland enzyme activity is a biomarker for C. difficile infection (CDI) and annotated two such cofactor-dependent Stickland reductases. We, for the first time, structurally assigned proline reductase and glycine reductase as cysteine-derived pyruvoyl-dependent enzymes and showed through cofactor monitoring that their activity is regulated by their respective amino acid substrates. Proline reductase was consistently active in toxigenic C. difficile, confirming the enzyme to be a major metabolic driver of CDI. Further, activity-based hydrazine probes were shown to be active site directed inhibitors of proline reductase. As such, this enzyme activity, via its druggable cofactor modality, is a promising therapeutic target that could allow for the repopulation of bacteria that compete with C. difficile for proline and therefore restore colonization resistance against C. difficile in the gut.

2023-03-11 | PXD039143 | Pride

Unraveling Cecal Alterations in Clostridioides difficile Colonized Mice through a Comprehensive Metabolic Profile of 289 Compound

Project description:Unraveling Cecal Alterations in Clostridioides difficile Colonized Mice through a Comprehensive Metabolic Profile of 289 Compound

2024-07-10 | MSV000095285 | MassIVE

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