Mycobacterium tuberculosis
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA340791 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Transcriptional profiling of Mycobacterium tuberculosis H37Rv after 4 hours of combination isoniazid and cysteine treatment relative to treatment with isoniazid alone.
2017-03-27 | GSE86184 | GEO
Project description:Transcriptional profiling of Mycobacterium tuberculosis mc2 7000 surviving 4 days of isoniazid treatment relative to untreated to investigate genes relevant to survival in genotypically isoniazid-sensitive cells
2016-09-23 | GSE86141 | GEO
Project description:In order to study the effect of manganese on the immunity of macrophages, we established a model of infection with Mycobacterium tuberculosis and treated it with manganese and isoniazid for 12 hours
2022-08-26 | GSE211666 | GEO
Project description:The new microarray described for Mycobacterium tuberculosis in our study has a more complete reprensentation of the genome than any other array design reported till date. Further, protocols for sample preparation, labelling and hybridisation for accurate gene expression profiling of M.tuberculosis have been optimised. Whole genome expression profiling on Mycobacterium tuberculosis H37Rv (OD600 0.4-0.5) was performed using exponential phase cultures after 0 and 6 Hrs in presence and absence of drug (Isoniazid) by using PolyA-dT and WT method. The exponential culture after 24 and 72 Hrs were used for validating the specific hybridization with or without formamide. All time points had two biological replicates with two technical replicates.
2013-06-01 | E-GEOD-45811 | biostudies-arrayexpress
Project description:A cell-based phenotypic screen for inhibitors of biofilm formation in Mycobacterium tuberculosis (Mtb) identified the small molecule TCA1, which has bactericidal activity against both drug susceptible and drug resistant Mtb, and synergizes with rifampicin (RIF) or isoniazid (INH) in sterilization of Mtb in vitro. In addition, TCA1 has bactericidal activity against non-replicating Mtb in vitro and is efficacious in acute and chronic Mtb infection mouse models, both alone and in combination with INH or RIF. Transcriptional analysis revealed that TCA1 down-regulates genes known to be involved in Mtb dormancy and drug tolerance. Mutagenesis and affinity-based methods identified DprE1 and MoeW, enzymes involved in cell wall and molybdenum cofactor biosynthesis, respectively, as the targets responsible for TCA1’s activity. These in vitro and in vivo results indicate that TCA1functions by a novel mechanism and suggest that it may be the first product of a promising new approach for the development of anti-tuberculosis drugs.
2013-05-24 | GSE42151 | GEO
Project description:Pyrazinamide (PZA) is one of the first line antibiotics used for the treatment of tuberculosis (TB). we have used human monocyte and a mouse model of pulmonary TB to investigate whether treatment with PZA, in addition to its known anti-mycobacterial properties, modulate the host immune response during Mycobacterium tuberculosis (Mtb) infection.
2013-06-28 | GSE48027 | GEO
Project description:A cell-based phenotypic screen for inhibitors of biofilm formation in Mycobacterium tuberculosis (Mtb) identified the small molecule TCA1, which has bactericidal activity against both drug susceptible and drug resistant Mtb, and synergizes with rifampicin (RIF) or isoniazid (INH) in sterilization of Mtb in vitro. In addition, TCA1 has bactericidal activity against non-replicating Mtb in vitro and is efficacious in acute and chronic Mtb infection mouse models, both alone and in combination with INH or RIF. Transcriptional analysis revealed that TCA1 down-regulates genes known to be involved in Mtb dormancy and drug tolerance. Mutagenesis and affinity-based methods identified DprE1 and MoeW, enzymes involved in cell wall and molybdenum cofactor biosynthesis, respectively, as the targets responsible for TCA1M-bM-^@M-^Ys activity. These in vitro and in vivo results indicate that TCA1functions by a novel mechanism and suggest that it may be the first product of a promising new approach for the development of anti-tuberculosis drugs. Transcriptional profile of TCA1-treated cells relative to DMSO-treated control. Three biological replicates, third is a dye flip.
2013-05-24 | E-GEOD-42151 | biostudies-arrayexpress
Project description:The ability of Mycobacterium tuberculosis (Mtb) to adopt heterogeneous physiological states, underlies it’s success in evading the immune system and tolerating antibiotic killing. Drug tolerant phenotypes are a major reason why the tuberculosis (TB) mortality rate is so high, with over 1.8 million deaths annually. To develop new TB therapeutics that better treat the infection (faster and more completely), a systems-level approach is needed to reveal the complexity of network-based adaptations of Mtb. Here, we report the transcriptional response of Mtb to the drug isoniazid. We performed transcriptomic sequencing (RNA-seq) on Mtb bacilli at 4, 24, 72 h following exposure to the drug.
2021-12-15 | GSE165581 | GEO
Project description:The emergence of drug resistance among tuberculosis (TB) patients is often associated with their non-compliance to the length of the chemotherapy, which can reach up to 2 years for the treatment of multi-drug-resistant (MDR) TB. Drugs that would kill TB faster and would not lead to the development of drug resistance could shorten chemotherapy significantly. In Escherichia coli, the common mechanism of cell death by bactericidal antibiotics is the generation of highly reactive hydroxyl radicals via the Fenton reaction. Since ascorbic acid (vitamin C) is known to drive the Fenton reaction, we tested whether the Fenton reaction could lead to a bactericidal event in Mycobacterium tuberculosis by treating M. tuberculosis cultures with vitamin C. Here, we report that the addition of vitamin C to drug-susceptible, MDR and extensively drug-resistant (XDR) M. tuberculosis strains results in sterilization of the cultures in vitro. We show that the sterilizing effect of vitamin C on M. tuberculosis was dependent on the production of high ferrous ion levels and reactive oxygen species. Although, this potent sterilizing activity of vitamin C against M. tuberculosis in vitro was not observed in mice, we believe this activity needs further investigation. Comparison of vitamin C treated Mycobacterium tuberculosis transcriptome relative to untreated; Three biological replicates, second is a dye flip
2013-05-24 | E-GEOD-42293 | biostudies-arrayexpress
Project description:Transcriptional profiling of Mycobacterium tuberculosis H37Ra::pTetR-yidC (Test) compared with Mycobacterium tuberculosis H37Ra::pTetR (Control) bacteria after 4 days of treatment with 50ng/ml ATc with shaking at 200rpm at 37°C.
2018-11-28 | GSE110355 | GEO