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Burkholderia pseudomallei

ABSTRACT: Burkholderia pseudomallei from a goat farm in Northern Australia

PROVIDER: PRJNA869121 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21102900_1.fastq.gz	Fastqsanger.gz
	SRR21102900_2.fastq.gz	Fastqsanger.gz
	SRR21102901_1.fastq.gz	Fastqsanger.gz
	SRR21102901_2.fastq.gz	Fastqsanger.gz
	SRR21102902_1.fastq.gz	Fastqsanger.gz

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Role of ppiB in burkholderia pseudomallei

Project description:Burkholderia pseudomallei is the causative agent of melioidosis a disease endemic in South-East Asia and Northern Australia. The mortality rates in these areas are unacceptably high even with antibiotic treatment, attributed to intrinsic and acquired resistance of B. pseudomallei to antibiotics. With very few options for therapeutics there is an urgent requirement to identify anti-bacterial targets for the development of novel, effective treatments. In this study we examine the role and effect of ppiB on the proteome. Using LFQ analysis we show loss of ppiB has dramatic effect on the Burkholderia pseudomallei proteome.

2019-08-05 | PXD012956 | Pride

The expression of virulence and antimicrobial related proteins in different Burkholderia mallei and Burkholderia pseudomallei isolates

Project description:Burkholderia mallei and Burkholderia pseudomallei are both potential biological threats agents. Melioidosis caused by B. pseudomallei is endemic in Southeast Asia and Northern Australia, while glanders caused by B. mallei infections are rare. Here we studied the proteomes of different B. mallei and B. pseudomallei isolates to determine species specific characteristics. Analyzing the expressed proteomes of B. mallei and B. pseudomallei revealed differences between B. mallei and B. pseudomallei but also between isolates from the same species. Expression of multiple virulence factors and proteins of several PKS/NRPS clusters was demonstrated. Proteome analysis can be used not only to identify bacteria but also to characterize the expression of important factors that putatively contribute to pathogenesis of B. mallei and B. pseudomallei.

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Effect of Mip inhibition on J774A.1 macrophage immune response during Burkholderia pseudomallei infection

Project description:Melioidosis, caused by the Gram-negative bacterium Burkholderia pseudomallei, is a disease endemic to South-East Asia and Northern Australia. Clinical presentation is highly variable, ranging from asymptomatic to fatal septicaemia, and thus the outcome of infection can depend on the host immune responses. The aim of this study was to characterise the macrophage immune response to B. pseudomallei in the presence of novel inhibitors targeting the virulence factor, Macrophage Infectivity Potentiator (Mip) protein. To do this. murine macrophage J774A.1 cells were infected with B. pseudomallei K96243 in the presence and absence of two small-molecule inhibitors designed to target the Mip protein. Global transcriptional profiling of macrophages infected with B. pseudomallei was analysed by RNA-Seq four hours post-infection. In the presence of Mip inhibitors, we found a significant reduction in the expression of pro-inflammatory cytokines highlighting the potential to utilize Mip inhibitors to dampen potentially harmful pro-inflammatory responses resulting from B. pseudomallei infection in macrophages. We then performed gene expression profiling analysis using data obtained from RNA-seq of J774A.1 macrophages infected with Burkholderia pseudomallei in the presence of two Mip inhibitors or vehicle control 4 hours post-infection

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Burkholderia pseudomallei

Project description:Burkholderia pseudomallei goat farm genome sequencing and assembly

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Characterisation of Burkholderia pseudomallei colony morphology variants by microarray

Project description:Burkholderia pseudomallei is the causative agent of melioidosis which is endemic to Southeast Asia and Northern Australia. It is a Gram-negative soil and water bacterium that represents a potential bioterrorism threat. Colony morphology variation is a remarkable feature in primary clinical cultures of B. pseudomallei. Differences in expression of several potential virulence and survival genes were believed to be associated with B. pseudomallei colony morphology variants. Microarrray approach was used to investigate alterations of the global B. pseudomallei transcriptome profile at the mid-logarithmic phase of growth, among the wild type (WT) and small colony variant (SCV) of B. pseudomallei pre- and post-exposed to human lung epithelial cells, A549. Generally, SCV pre- and post-exposed have lower metabolic requirements and consume lesser energy than WT pre- and post-exposed to A549; however, both WT and SCV may limit their metabolic activity during the infection of A549 cells and this is indicated by the down-regulation of genes implicated in metabolism of amino acids, carbohydrate, lipid, and other amino acids, and biodegradation of xenobiotics. On the other hand, many well-known virulence and survival factors including T3SS, T6SS, fimbriae, capsular polysaccharides, drug resistance and stress response were up-regulated in both WT and SCV pre- and post-exposed to A549 cells. Several virulence factors expressed at the mid-logarithmic phase of growth. Microarray analysis on the different morphotypes demonstrated the essential difference in bacterial response associated with virulence and survival pre- and post-exposed to A549 cells.

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Methylome sequencing of Burkholderia pseudomallei strains Bp33 and Bp35

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Toxicogenomic Effect of Burkholderia pseudomallei in a Human Macrophage Cell (THP-1) Model of Acute Melioidosis Using Whole-genome Microarray

Project description:Gene expression profiles of human cell (THP-1) lines exposed to a novel Daboiatoxin (DbTx) isolated from Daboia russelli russelli, and specific cytokines and inflammatory pathways involved in acute infection caused by Burkholderia pseudomallei. Keywords: Melioidosis, Burkholderia pseudomallei, Daboiatoxin, Cytokines, Inflammation.

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