Mycobacterium tuberculosis CDC1551
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA112109 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Mycobacterium tuberculosis CDC1551 WT/sigI mutant
| PRJNA152857 | ENA
Project description:These data represent the global gene expression profile of Mycobacterium tuberculosis after 24 hrs and 72 hrs of inorganic phosphate starvation. Differentially regulated genes appear to include those encoding proteins involved in adaptation to phosphate starvation, namely those involved in phosphate regulation and phosphate assimilation, as well as those involved in the stringent response.
2009-09-22 | GSE14840 | GEO
Project description:We analyzed the genes expressed, or the transcriptome, of bacilli (Mycobacterium tuberculosis) growing in fatty acids as sole carbon source. Using new technologies to massively sequence of RNA molecules we identified a group of genes that provides novel insight regarding the metabolic pathways and transcriptional regulation of latent M. Tuberculosis.
2013-06-13 | GSE47863 | GEO
Project description:New chemotherapeutics are urgently required to control the tuberculosis pandemic fueled by the emergence of multidrug- and extensively-drug-resistant Mycobacterium tuberculosis strains and the bacterium`s catastrophic alliance with HIV. Here we describe a novel trehalose-to-α-glucan pathway in M. tuberculosis comprising four enzymatic steps mediated by TreS, Pep2, GlgB, and GlgE, identified as an essential maltosyltransferase capable of utilizing maltose 1-phosphate. Using traditional and chemical reverse genetics, we show that GlgE inactivation causes rapid death of M. tuberculosis in vitro and in mice, through self-poisoning by maltose 1-phosphate accumulation driven by a self-amplifying feedback loop promoting pleiotropic phosphosugar-induced stress responses. Moreover, this α-glucan pathway exhibited a synthetic lethal interaction with the glucosyltransferase Rv3032 involved in biosynthesis of specialized α-glucan derivatives. The unique combination of gene essentiality within a synthetic lethal pathway validates GlgE as a new class of drug targets, revealing novel synergistic mechanisms to induce death in M. tuberculosis. Transcriptional profiling was performed to characterize the lethality induced by maltose 1-phosphate accumulation. Triplicate 10 mL cultures of the conditional lethal Mtb mutant strain H37Rv Delta treS Delta glgE (pMV361::treS) and of the vector control strain H37Rv Delta treS Delta glgE (pMV361) were grown in liquid culture to log-phase in the presence of 5 mM validamycin A (VA) to suppress M1P formation. Subsequently, cells were washed to remove the inhibitor; after 48 h of starvation for VA cultures were harvested. Keywords: tuberculosis, trehalose, compound treatment design, genetic modification design, and stimulus or stress design
2010-02-24 | GSE18575 | GEO
Project description:New chemotherapeutics are urgently required to control the tuberculosis pandemic fueled by the emergence of multidrug- and extensively-drug-resistant Mycobacterium tuberculosis strains and the bacterium`s catastrophic alliance with HIV. Here we describe a novel trehalose-to-α-glucan pathway in M. tuberculosis comprising four enzymatic steps mediated by TreS, Pep2, GlgB, and GlgE, identified as an essential maltosyltransferase capable of utilizing maltose 1-phosphate. Using traditional and chemical reverse genetics, we show that GlgE inactivation causes rapid death of M. tuberculosis in vitro and in mice, through self-poisoning by maltose 1-phosphate accumulation driven by a self-amplifying feedback loop promoting pleiotropic phosphosugar-induced stress responses. Moreover, this α-glucan pathway exhibited a synthetic lethal interaction with the glucosyltransferase Rv3032 involved in biosynthesis of specialized α-glucan derivatives. The unique combination of gene essentiality within a synthetic lethal pathway validates GlgE as a new class of drug targets, revealing novel synergistic mechanisms to induce death in M. tuberculosis. Transcriptional profiling was performed to characterize the lethality induced by maltose 1-phosphate accumulation. Triplicate 10 mL cultures of the conditional lethal Mtb mutant strain H37Rv Delta treS Delta glgE (pMV361::treS) and of the vector control strain H37Rv Delta treS Delta glgE (pMV361) were grown in liquid culture to log-phase in the presence of 5 mM validamycin A (VA) to suppress M1P formation. Subsequently, cells were washed to remove the inhibitor; after 48 h of starvation for VA cultures were harvested. Keywords: tuberculosis, trehalose, compound treatment design, genetic modification design, and stimulus or stress design Three biological replicates with one dye-flip
2010-05-14 | E-GEOD-18575 | biostudies-arrayexpress
Project description:The otsB2 gene encoding trehalose-6-phosphate phosphatase is essential for in vitro growth of Mycobacterium tuberculosis and required to establish an acute infection in mice. Essentiality of otsB2 is due to direct or indirect toxic effects associated with the substrate trehalose-6-phosphate that accumulates when OtsB2 gene expression is impaired. In order to gain insight into the molecular basis of trehalose-6-phosphate mediated toxic effects, whole genome transcriptome profiling was done using RNA-seq. A conditional otsB2 mutant of Mycobacterium tuberculosis was generated by inserting an anhydrotetracycline-inducible promoter cassette upstream of the otsB2 start codon,and the transcriptome profile of a fully induced mutant resembling the wildtype phenotype was compared to that of a partially silenced mutant under conditions where 30% residual growth relative to the fully induced mutant was observed.
2016-11-21 | GSE70291 | GEO
Project description:To characterize the role of Rv0516c in the osmotic stress response of Mycobacterium tuberculosis (Mtb), we performed transcriptional profiling of CDC1551 Rv0516c::Tn following treatment with 140 mM NaCl for 1 hr relative to an untreated control.
2013-11-15 | GSE50160 | GEO
Project description:We analyzed the genes expressed, or the transcriptome, of bacilli (Mycobacterium tuberculosis) growing in fatty acids as sole carbon source. Using new technologies to massively sequence of RNA molecules we identified a group of genes that provides novel insight regarding the metabolic pathways and transcriptional regulation of latent M. Tuberculosis. Comparative Transcriptomics between two carbon source (Dextrose, Long Fatty Acids), at two states of growth (Exponential and Stationary Phase)
2013-06-13 | E-GEOD-47863 | biostudies-arrayexpress
Project description:To identify mediators of the osmotic stress response in Mycobacterium tuberculosis (Mtb), we performed transcriptional profiling of WT CDC1551 following treatment with 140 mM NaCl for 1 hr relative to an untreated control. 140 mM NaCl was chosen to reflect the approximate osmolarity of human plasma (i.e., 280 mOsm/L), which may be relevant during the course of infection.
2013-11-15 | GSE50159 | GEO
Project description:This SuperSeries is composed of the following subset Series: GSE36341: mRNA degradation in Mycobacterium tuberculosis under aerobic conditions GSE36342: mRNA degradation in Mycobacterium smegmatis under aerobic conditions GSE36343: mRNA degradation in Mycobacterium tuberculosis during cold and hypoxic stress GSE36344: mRNA degradation in Mycobacterium tuberculosis with DosR ectopically induced Refer to individual Series
2012-03-08 | E-GEOD-36345 | biostudies-arrayexpress