Project description:The expression levels of uropathogenic E. coli (UPEC) UTI89 cells in YESCA broth with and without 4% dimehtyl sulfoxide (DMSO) and 2% ethanol (EtOH) were studied.
Project description:Transcriptional analysis of UTI89 - uropathogenic E.coli (UPEC) strain grown in urine/Luria bertani medium culture in vitro as well as during three distinct phases of UPEC bladder infection: intracellular growth, filament formation and filament reversal. UTI89 was used to infect a bladder epithelial cell line cultured within a dynamic flow chamber system and harvested at particular stages of its pathogenecity cascade. Total RNA was processed and cy3 labeled for microarray analysis using Agilent custom Escherichia coli UTI89 arrays designed using E-Array.
Project description:The purpose of this study is to determine whether the presence of pathogenic Escherichia coli in colon is associated with psychiatric disorders.
Project description:We previously determined that loss of respiratory quinol oxidase cytochrome bd disrupts biofilm formation in uropathogenic Escherichia coli (UPEC). In this study, we extracted and interrogated the outer membrane and extracellular matrix of colony biofilms formed by UPEC isolate UTI89 and an isogenic mutant lacking cytochrome bd (∆cydAB).
Project description:Despite the characterization of many aetiologic genetic changes. The specific causative factors in the development of sporadic colorectal cancer remain unclear. This study was performed to detect the possible role of Enteropathogenic Escherichia coli (EPEC) in developing colorectal carcinoma.
Project description:The method DFI-seq was developed to enable identification of differentially expressed genes in uropathogenic E. coli strain UTI89 during growth in human urine and in bladder epithelial cells. By utilising this new method, the aim was to identify novel virulence genes in UTI89. DFI-seq is a combination of differential fluorescence induction (DFI) with next-generation sequencing. DFI-seq was compared to DFI by analysing gene expression of UPEC in human urine and thereby confirming that DFI-seq gives a better overview of gene expression. DFI-seq was hereafter used to look at gene expression in UTI89 while infecting bladder epithelial cells. We demonstrate the usefulness of DFI-seq for identification of genes required for optimal growth of UPEC in human urine, as well as potential virulence genes upregulated during infection of bladder epithelial cells. DFI-seq holds potential for the study of bacterial gene expression in live-animal infection systems.
Project description:The expression levels of uropathogenic E. coli (UPEC) UTI89 cells in YESCA broth with and without 4% dimehtyl sulfoxide (DMSO) and 2% ethanol (EtOH) were studied. To determine the up- or down-regulated expression profile in the presence of dimethyl sulfoxide (DMSO) and ethanol (EtOH), UPEC UTI89 were grown in YESCA broth with 4% dimethyl sulfoxide (DMSO) or 2% ethanol (EtOH) or no comound at 26°C with 200 rpm shaking for 24 hours were used for RNA extraction and hybridization on Affymetrix microarrays.
