Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Transcriptomic changes associated with growth of Mycobacterium tuberculosis H37Rv wild-type strain and ∆prpR mutant in mineral medium supplemented with cholesterol as the sole carbon source or standard medium supplemented with vitamin B12.

ABSTRACT: RNA-Seq results accompanying submission of a manuscript: "Cholesterol-dependent transcriptome remodeling reveals new insight into the contribution of cholesterol to Mycobacterium tuberculosis pathogenesis" describing the role of cholesterol and vitamin B12 in shaping the transcriptome of the Mycobacterium tuberculosis H37Rv and M. tuberculosis ∆prpR - propionate regulator (PrpR) mutant. Next generation sequencing results are provided in three independent biological replicates for each strain growing in three different media - minimal medium with glycerol or cholesterol as the sole carbon source and standard 7H9/10% OADC medium. The influence of vitamin B12 on M. tuberculosis transcriptome was analysed on 7H9/10% OADC medium supplemented with B12. The study allowed us to re-establish the list of genes potentially involved in cholesterol metabolism. We further proposed a novel regulatory function of vitamin B12 and PrpR, a propionate regulator, in coordinated cholesterol breakdown metabolite dissipation and virulent phenotype induction. Finally, we demonstrated that a key role of cholesterol in Mtb metabolism is not only providing carbon and energy but also inducing a transcriptome remodeling program that helps in developing tolerance to the unfavorable host cell environment.

ORGANISM(S): Mycobacterium tuberculosis H37Rv

PROVIDER: GSE175812 | GEO | 2021/05/31

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

C. elegans methionine/S-adenosylmethionine cycle activity is sensed and adjusted by a nuclear hormone receptor: RNA-seq dataset 2

Project description:Vitamin B12 is an essential micronutrient that functions in two metabolic pathways: the canonical propionate breakdown pathway and the methionine/S-adenosylmethionine (Met/SAM) cycle. In Caenorhabditis elegans, low vitamin B12, or genetic perturbation of the canonical propionate breakdown pathway results in propionate accumulation and the transcriptional activation of a propionate shunt pathway. This propionate-dependent mechanism requires nhr-10 and is referred to as “B12-mechanism-I”. Here, we report that vitamin B12 represses the expression of Met/SAM cycle genes by a propionate-independent mechanism we refer to as “B12-mechanism-II”. This mechanism is activated by perturbations in the Met/SAM cycle, genetically or due to low dietary vitamin B12. B12-mechanism-II requires nhr-114 to activate Met/SAM cycle gene expression, the vitamin B12 transporter, pmp-5, and adjust influx and efflux of the cycle by activating msra-1 and repressing cbs-1, respectively. Taken together, Met/SAM cycle activity is sensed and transcriptionally adjusted to be in a tight metabolic regime.

2020-06-05 | GSE151847 | GEO

C. elegans methionine/S-adenosylmethionine cycle activity is sensed and adjusted by a nuclear hormone receptor: RNA-seq dataset 1

2020-06-05 | GSE151846 | GEO

Transcriptomic changes associated with growth of Mycobacterium tuberculosis H37Rv wild-type strain and ∆prpR mutant in mineral medium supplemented with cholesterol as the sole carbon source or standard medium supplemented with vitamin B12.

Project description:Transcriptomic changes associated with growth of Mycobacterium tuberculosis H37Rv wild-type strain and ∆prpR mutant in mineral medium supplemented with cholesterol as the sole carbon source or standard medium supplemented with vitamin B12.

| PRJNA733783 | ENA

Metabolic rescue of α-synuclein-induced neurodegeneration through propionate supplementation and intestine-neuron signaling in C. elegans

Project description:Vitamin B12 depletion or propionate supplementation can reverse the transcriptomic aberration in the C. elegans model of PD with neuronal overexpression of alpha-synuclein A53T

2023-04-28 | GSE230786 | GEO

Basal in vitro transcriptomes of Mycobacterium tuberculosis complex (MTC) clinical isolates

Project description:This study uses microarray analyses to examine baseline gene expression profiles for Mycobacterium tuberculosis complex clinical isolates relative to reference strain CDC1551 during log phase growth in vitro in 7H9 broth. For this in vitro analyses, log-phase mycobacteria in starter cultures grown to mid-log from frozen stocks were inoculated into 7H9-OADC medium in 25-cm2 vented flasks at an OD of ~0.05 and grown without shaking for ~1 week to an OD of ~0.5-0.6.

2010-07-09 | GSE21111 | GEO

A Persistence Detector for Metabolic Network Rewiring in an Animal

Project description:Biological systems must possess mechanisms that prevent inappropriate responses to spurious environmental inputs. Caenorhabditis elegans has two breakdown pathways for the short-chain fatty acid propionate: a canonical, vitamin B12-dependent pathway and a propionate-shunt that is used when vitamin B12 levels are low. The shunt pathway is kept off when there is sufficient flux through the canonical pathway, likely to avoid generating shunt-specific toxic intermediates. Here, we discover a transcriptional regulatory circuit that activates shunt gene expression upon propionate buildup. The nuclear hormone receptors NHR-10 and NHR-68 function together as a ‘persistence detector’ in a type 1, coherent feed-forward loop with an AND-logic gate to delay shunt activation upon propionate accumulation, and to avoid spurious shunt activation in response to a non-sustained pulse of propionate. Together, our findings identify the first persistence detector in an animal, which transcriptionally rewires propionate metabolism to maintain homeostasis.

2018-12-08 | GSE123507 | GEO

Impact of the vitamin B12 on the transcriptional regulation of the Mycobacterium tuberculosis Complex

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

Mutations of the selected strain growing in low levels of Vitamin B12 in Mycobacterium marinum

Project description:Vitamin B12 (B12) is an important cofactor in mycobacterial metabolism, and some pathogenic mycobacteria need to obtain it from the host. In this study, we investigated the transport of vitamin B12 in Mycobacterium marinum. We identified a transcriptor regulator that could be potentially involved in the uptake process. RNA sequencing analysis were performed in order to elucidate the regulon of this new transcriptor.

2023-08-14 | GSE240448 | GEO

Gene expression profile of human monocytes stimulated with all-trans retinoic acid (ATRA) or 1,25a-dihydroxyvitamin D3 (1,25D3)

Project description:A role for vitamin A in host defense against Mycobacterium tuberculosis has been suggested through epidemiological and in vitro studies; however, the antimicrobial mechanism is unclear. Here, we demonstrate that vitamin A mediates host defense through regulation of cellular cholesterol content. Comparison of monocytes stimulated with all-trans retinoic acid (ATRA) or 1,25-dihydroxyvitamin D3, the biologically active forms of vitamin A and vitamin D respectively, indicates that ATRA and 1,25D3 induce mechanistically distinct antimicrobial activities. Gene expression profiling reveals that ATRA but not 1,25D3 triggers a lipid metabolism and efflux pathway, including expression of lysosomal lipid transport gene NPC2. ATRA-induced decrease in total cellular cholesterol content, subcellular lipid reorganization, lysosomal acidification and antimicrobial activity are all dependent upon expression of NPC2. Finally, the addition of HIV-protease inhibitors known to inhibit cholesterol efflux, Ritonavir and Nelfinavir, blocked both ATRA-induced cholesterol decrease as well as antimicrobial activity. Taken together, these results suggest that the vitamin A-mediated host defense mechanism against M. tuberculosis requires regulation of cellular cholesterol. Monocytes derived from four independent healthy blood donors that were stimulated with control (CTRL), ATRA or 1,25D3 at 10-8M for 18 hours.

2013-12-31 | E-GEOD-46268 | biostudies-arrayexpress

Basal in vitro transcriptomes of Mycobacterium tuberculosis complex (MTC) clinical isolates

2010-07-08 | E-GEOD-21111 | biostudies-arrayexpress