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Stenotrophomonas maltophilia

ABSTRACT: Molecular epidemiology of drug-resistant Stenotrophomonas maltophilia isolates from hospitals in Myanmar

PROVIDER: PRJDB18352 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	DRR576095_1.fastq.gz	Fastqsanger.gz
	DRR576095_2.fastq.gz	Fastqsanger.gz
	DRR576096_1.fastq.gz	Fastqsanger.gz
	DRR576096_2.fastq.gz	Fastqsanger.gz
	DRR576097_1.fastq.gz	Fastqsanger.gz

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Stenotrophomonas maltophilia

Project description:Emergence of drug-resistant Stenotrophomonas maltophilia clinical isolates in Nepal

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Stenotrophomonas maltophilia FLR19 response to pH

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2018-10-17 | GSE121347 | GEO

Functional characterization of the RNA chaperone Hfq in opportunistic human pathogen Stenotrophomonas maltophilia

Project description:Stenotrophomonas maltophilia is an important opportunistic pathogen affecting primarily hospitalized and immuno-compromised hosts. We constructed an hfq deletion mutant (Delta-hfq) of S. maltophilia, and compared the behaviour of wild-type and Delta-hfq S. maltophilia cells in a variety of assays. Differential RNA sequencing analysis (dRNA-seq) of RNA isolated from S. maltophilia wild-type and Delta-hfq strains showed that Hfq regulates expression of genes encoding flagellar and fimbrial components, transmembrane proteins, as well as enzymes involved in different metabolic pathways. Moreover, we analysed expression of several sRNAs identified by dRNA-seq in wild-type. The accumulation of two sRNAs was strongly reduced in the absence of Hfq. TEX (terminator exonuclease) treated and untreated libraries of the wild type and the Delta-hfq mutant were sequenced and compared

2012-10-02 | E-GEOD-39705 | biostudies-arrayexpress

A transcriptomic and functional analysis of the interaction between Caenorhabditis elegans and Stenotrophomonas maltophilia

Project description:The goal of this study was to elucidate genes that are employed by the bacterivorous nematode Caenorhabditis elegans to respond to the emerging nosocomial bacterial pathogen Stenotrophomonas maltophilia.

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Functional characterization of the RNA chaperone Hfq in opportunistic human pathogen Stenotrophomonas maltophilia

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Global transcriptome analysis of Stenotrophomonas maltophilia in response to human body temperature

Project description:Stenotrophomonas maltophilia is an emerging multidrug resistance opportunistic pathogen affecting immunocompromised and hospitalized patients. S. maltophilia is an environmental bacterium which adapts to human body and causing infection. S. rhizophilia, a non-pathogenic and phylogenetic neighbour of S. maltophilia is unable to grow at human body temperature. Thus, to understand molecular mechanism underlying the adaptation of S. maltophilia at human body temperature, we performed the comparative transcriptome analysis of S.maltophilia at 28 °C (representative for the environmental niches) and 37 °C (representative for human body) by using RNA-Seq. The major temperature-induced genes include genes for Type IV secretion system, aerotaxis, and cation diffusion facilitator family transporter suggesting its potential role in the adaptation and virulence of S. maltophilia. The downregulated genes at 37 °C includes the genes for the cell motility, energy generation and metabolism, lipid metabolism, translation, amino acid metabolism and transport, replication and repair, inorganic ion and transport metabolism lipid metabolism, coenzyme metabolism.

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A novel TetR-like transcriptional regulator in Stenotrophomonas maltophilia is involved in fatty acid metabolism, including quorum sensing signal turnover

Project description:Stenotrophomonas maltophilia is an emerging opportunistic multidrug-resistant pathogen frequently co-isolated with other relevant nosocomial pathogens in respiratory tract infections. S. maltophilia uses the endogenous DSF quorum sensing (QS) system to regulate virulence processes but can also respond to exogenous AHL signals produced by neighboring bacteria. A whole-transcriptome sequencing analysis was performed for S. maltophilia strain K279a in the exponential and stationary phases and in exponential cultures after a treatment with exogenous DSF or AHLs. Among the common top upregulated genes, the putative TetR-like regulator Smlt2053 was selected for functional characterization. This regulator was found to sense long-chain fatty acids, including the QS signal DSF, and activate a β-oxidation catabolic pathway.

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Project description:Biofilm formation by Escherichia coli was significantly inhibited when co-cultured with Stenotrophomonas maltophilia in static systems. Genes of E. coli involved in species interactions with S. maltophilia were identified in order to allow the study of the mechanisms of inhibited E. coli biofilm formation in co-culture. A total of 89 and 108 genes were identified as differentially expressed in mixed species cultures when growing as biofilm and as planktonic cultures, respectively, compared to the counterpart of pure cultured E. coli. Differential expression of certain identified genes was confirmed using E. coli reporter strains combined with single-cell based flow cytometry analysis. Co-culture with S. maltophilia affected genes involved in metabolism, signal transduction, cell wall composition, and biofilm formation of E. coli. Several selected genes were further confirmed as affecting E. coli biofilm formation in mixed species cultures with S. maltophilia. The data suggest that these genes were involved in species interactions between E. coli and S. maltophilia. This SuperSeries is composed of the SubSeries listed below. Refer to individual Series.

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Stenotrophomonas maltophilia

Project description:Stenotrophomonas maltophilia

| PRJEB53698 | ENA