Response of M. tuberculosis to 8 hour exposure to vitamin C
Ontology highlight
ABSTRACT:
ORGANISM(S): Mycobacterium tuberculosis H37Rv
PROVIDER: GSE60376 | GEO | 2014/10/01
SECONDARY ACCESSION(S): PRJNA258136
REPOSITORIES: GEO
Similar Datasets
Project description:Transcriptional profiling of M.tuberculosis to 10 mM vitamin C at 8 h. This was compared to gene expression profile of untreated M. tuberculosis culture. Organism: Mycobacterium tuberculosis H37Rv, Genotypic Technology designed Custom Mycobacterium tuberculosis H37Rv Whole Genome 8x15k GE Microarray (AMADID-020181)
2014-10-01 | E-GEOD-60376 | biostudies-arrayexpress
Project description:Transcriptional profiling of M.tuberculosis to 10 mM vitamin C at 0.25, 0.5, 1, 2 , 4, 8 and 24 h compared to gene expression profile of untreated M. tuberculosis culture (0 h).
2018-01-31 | GSE101048 | 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: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.
2013-05-24 | GSE42293 | GEO
Project description:Transcriptional profiling of Mtb H37Rv infected into THP-1 macrophage cell line and treated with 100 µM vitamin C (vit C) for 96 hours and 144 hours, compared to gene expression profile of untreated bacteria post-infection.
2021-10-01 | GSE179376 | GEO
Project description:The transcriptome in response to vitamin B12 was interrogated in three M. tuberculosis Complex species: M. tuberculosis H37Rv, M. tuberculosis GC1237, and M. bovis AF2122/97. Examination of the core B12 transcriptome resulted in a robust differential regulation of 7 genes in the three species analysed
2023-12-22 | GSE232691 | GEO
Project description:Vitamin B1 (VB1) is a key dietary nutrient and crucial cofactor, which exhibits a series of regulatory functions on cellular processes and the activation of the immune system. To date, the precise effect of VB1 on Mycobacterium tuberculosis has not been fully described. In the present study, the direct influence of VB1 treatment on M. bovis BCG was determined using RNA-sequencing and LC/MS. The selection of this strain was used due to its common physiological features with M.tuberculosis. The investigation of the M. bovis BCG transcription demonstrated significant changes in certain metabolic and cellular process such as the decrease in fatty acid, cholesterol and glycolipid catabolism, the decrease in DNA replication and protein translation, the reduction in cell division and cell wall formation. LC/MS indicated that most of amino acids and ADP decreased in VB1 processed culture. In addition, growth assays indicated that VB1 inhibited the BCG growth rate in vitro. This study will be benefit for our deeply understanding for impact of VB1 to M.tuberculosis.
2019-05-08 | GSE114949 | GEO
Project description:Previous reports have shown low vitamin D serum levels and polymorphisms in the vitamin D receptor (VDR) to be associated with increased risk for TB. Given that 1α,25-dihydroxyvitamin D3 has a role in lipid metabolism control, we tested whether the link between 1α,25-dihydroxyvitamin D3 and tuberculosis involves macrophage lipid metabolism. Since formation of lipid droplets (LD) is a hallmark of lipid dysregulation in M. tuberculosis-infected macrophages, we measured LD content as a readout of altered lipid metabolism in infected THP-1 cells. Induction of LD, which peaked by 24 hours post-infection was prevented by addition of 1α,25-dihydroxyvitamin D3 at the time of infection. To investigate the mechanism of 1α,25-dihydroxyvitamin D3 modulation of LD formation, we analyzed the transcriptome of M. tuberculosis-infected THP-1 cells with and without 1α,25-dihydroxyvitamin D3 treatment.
2014-07-01 | GSE57028 | 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:Previous reports have shown low vitamin D serum levels and polymorphisms in the vitamin D receptor (VDR) to be associated with increased risk for TB. Given that 1?,25-dihydroxyvitamin D3 has a role in lipid metabolism control, we tested whether the link between 1?,25-dihydroxyvitamin D3 and tuberculosis involves macrophage lipid metabolism. Since formation of lipid droplets (LD) is a hallmark of lipid dysregulation in M. tuberculosis-infected macrophages, we measured LD content as a readout of altered lipid metabolism in infected THP-1 cells. Induction of LD, which peaked by 24 hours post-infection was prevented by addition of 1?,25-dihydroxyvitamin D3 at the time of infection. To investigate the mechanism of 1?,25-dihydroxyvitamin D3 modulation of LD formation, we analyzed the transcriptome of M. tuberculosis-infected THP-1 cells with and without 1?,25-dihydroxyvitamin D3 treatment. THP-1 cells were cultured in 24-well flat bottom plates, pre-treated with 20ng/ml PMA for 24 h, and incubated with M. tuberculosis H37Rv. After 4 hours of infection, cells were washed to remove extracellular bacteria and treated with 100 nM of 1?,25-dihydroxyvitamin D3. THP-1 cells were collected and analyzed at 24h. 3 biological replicates in each of the 4 groups were prepared: Infected, Infected plus 1?,25-dihydroxyvitamin D3, Non-infected, Non-infected plus 1?,25-dihydroxyvitamin D3.
2014-07-01 | E-GEOD-57028 | biostudies-arrayexpress