GEO DataSets

(Submitter supplied) Tuberculosis remains a major cause of death from an infectious disease worldwide, yet only 10% of people infected with Mycobacterium tuberculosis develop disease. Defining both necessary and sufficient immunologic determinants of protection remains a great scientific challenge. Analysis of peripheral blood gene expression profiles of active tuberculosis patients has identified correlates of risk for disease or pathogenesis. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

32 Samples

Download data: CEL

(Submitter supplied) 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. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS4860

Platform:

GPL570

12 Samples

Download data: CEL, CHP

Analysis of monocytes stimulated with biologically active forms of vitamin A and vitamin D. Vitamin A plays a role in host defense against Mycobacterium tuberculosis. Results provide insight into molecular mechanisms underlying the antimicrobial activities for vitamin A and vitamin D in monocytes.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 3 agent, 4 individual sets

Platform:

GPL570

Series:

GSE46268

12 Samples

Download data: CEL, CHP

(Submitter supplied) In vivo pathways of natural retinoid metabolism and elimination have not been well characterized in primary myeloid cells, even though retinoids and retinoid receptors have been strongly implicated in regulating myeloid maturation. Using a UAS-GFP reporter transgene, and retrovirally expressed Gal4-RARA in primary mouse bone marrow cells, we identified two distinct enzymatic pathways utilized by mouse myeloid cells ex vivo to synthesize RARA ligands from free vitamin A metabolites (retinyl acetate, retinol, and retinal). more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6193

6 Samples

Download data: CEL

(Submitter supplied) Macrophages are a protective replicative niche for Mycobacterium tuberculosis (Mtb) but can kill the infecting bacterium when appropriately activated. To identify mechanisms of clearance, we compared bacterial restriction by human macrophages after treatment with 26 compounds, including some currently in clinical trials for tuberculosis. All-trans-retinoic acid (ATRA), an active metabolite of vitamin A, drove the greatest increase in Mtb control. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21697

20 Samples

Download data: XLSX

(Submitter supplied) As macrophages are the primary site of Mtb infection and are sites of vitamin D signaling, we have used these cells to understand the molecular mechanisms underlying modulation of the immune response by the hormonal form of vitamin D, 1,25-dihydroxyvitamin D (1,25D). Microarrays were used to measure the changes in gene expression induced by 1,25D treatment of H37Rv-infected THP-1 cells

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS4781

Platform:

GPL6244

12 Samples

Download data: CEL, XLSX

Analysis of Mtb H37Rv-infected THP-1 macrophages treated with the hormonal form of vitamin D (1,25D). Macrophages are the primary site of Mtb infection and are sites of 1,25D signaling. Results provide insight into the molecular basis of the 1,25D-enhanced macrophage response to Mtb infection.

Organism:

Homo sapiens

Type:

Expression profiling by array, transformed count, 2 agent, 2 infection sets

Platform:

GPL6244

Series:

GSE52819

12 Samples

Download data: CEL

(Submitter supplied) Human serum derived macrophages were infected with Mtb expressing a transcriptional reporter of viability and on day 5, the cells were sorted for RFP+GFP+ macrophages or RFP+GFP- macrophages.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

6 Samples

Download data: CSV

(Submitter supplied) Glucocorticoids are extensively used to treat inflammatory diseases, however their chronic intake increases the risk of mycobacterial infections. Meanwhile, the effects of glucocorticoids on innate host responses are incompletely understood. Here, we studied the direct effects of glucocorticoids on antimycobacterial host defense in primary human macrophages. We found that glucocorticoids triggered the expression of cathelicidin, an antimicrobial critical for antimycobacterial response, independent of the intracellular vitamin D metabolism. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL17077

12 Samples

Download data: TXT

(Submitter supplied) In innate immune responses, activation of Toll-like receptors (TLRs) triggers direct antimicrobial activity against intracellular bacteria, which in murine, but not human, monocytes and macrophages is mediated principally by nitric oxide. We report here that TLR activation of human macrophages up-regulated expression of the vitamin D receptor and the vitamin D-1-hydroxylase genes, leading to induction of the antimicrobial peptide cathelicidin and killing of intracellular Mycobacterium tuberculosis. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS2954

Platform:

GPL96

50 Samples

Download data: CEL, EXP

Analysis of monocytes (MOs) and MO-derived dendritic cells (DCs) for up to 24 hours following Mycobacterium tuberculosis-derived lipopeptide treatment. Toll-like receptor activation by bacterial lipopeptides reduced the viability of M. tuberculosis in MOs and macrophages but not MO-derived DCs.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 agent, 2 cell type, 15 individual, 5 time sets

Platform:

GPL96

Series:

GSE8921

50 Samples

Download data: CEL, EXP

(Submitter supplied) Understanding the mechanisms of host macrophage responses to Mycobacterium tuberculosis (M.tb.) is essential for uncovering potential avenues of intervention to boost host resistance to infection. Macrophage transcriptome profiling revealed M.tb. infection strongly induced expression of several enzymes controlling tryptophan (Trp) catabolism. This included indole 2,3-dioxygenase 1 (IDO1) and tryptophan 2,3-dioxygenase (TDO2), which catalyze the rate-limiting step in the kynurenine pathway, producing ligands for the aryl hydrocarbon receptor (AHR). more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL16686

8 Samples

Download data: CEL, XLSX

(Submitter supplied) We report a study about differentially expressed small non-coding RNAs in the blood of humans harboring a latent (LTBI) or active tuberculosis (TB) infection in comparison with exposed controls (ExC) and treated LTBI (LTBItt). All non-TB subjects enrolled in this study were recent close contacts (rCt) of a newly diagnosed contagious TB cases enrolled in Rio de Janeiro, Brazil. The detailed methodology is described below. more...

Organism:

Homo sapiens

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL16791

49 Samples

Download data: TXT

(Submitter supplied) Macrophages play an essential role in the early immune response to Mycobacterium tuberculosis and are the cell type preferentially infected in vivo. Primary macrophages and macrophage-like cell lines are commonly used as infection models, although the physiological relevance of cell lines, particularly for host-pathogen interaction studies, is debatable. Here we use high-throughput RNA-sequencing to analyse transcriptome dynamics of two macrophage models in response to M. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

36 Samples

Download data: TXT

(Submitter supplied) The W-Beijing family of Mycobacterium tuberculosis (Mtb) strains is known for its high-prevalence and -virulence, as well as for its genetic diversity, as recently reported by our laboratories and others. However, little is known about how the immune system responds to these strains. To explore this issue, here we used reverse engineering and genome-wide expression profiling of human macrophage-like THP-1 cells infected by different Mtb strains of the W-Beijing family, as well as by the reference laboratory strain H37Rv. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS4258

Platform:

GPL570

40 Samples

Download data: CEL

Temporal analysis of macrophage-like THP-1 cell line infected by Mycobacterium tuberculosis (Mtb) W-Beijing strains and H37Rv. Mtb W-Beijing sublineages are highly virulent, prevalent and genetically diverse. Results provide insight into host macrophage immune response to Mtb W-Beijing strains.

Organism:

Homo sapiens

Type:

Expression profiling by array, transformed count, 3 infection, 13 strain, 4 time sets

Platform:

GPL570

Series:

GSE29628

40 Samples

Download data: CEL

(Submitter supplied) We examined the microRNA profiles of THP-1 macrophages upon the MTB infection of (1) Beijing/W and non-Beijing/W clinical strains, and (2) susceptible and multidrug-resistant (MDR-) MTB strains.

Organism:

Homo sapiens

Type:

Expression profiling by RT-PCR

Platform:

GPL19763

14 Samples

Download data: TXT

(Submitter supplied) the microRNA profiles of the host macrophages were studied by microarray in a small cohort with active MTB disease, latent infection (LTBI), and from healthy controls.

Organism:

Homo sapiens

Type:

Expression profiling by RT-PCR

Platform:

GPL19763

10 Samples

Download data: TXT

(Submitter supplied) Mycobacterium tuberculosis (Mtb) is a life-threatening pathogen in humans. Bacterial infection of macrophages usually triggers strong innate immune mechanisms, including IL-1 cytokine secretion. The newer member of the IL-1 family, IL-36, was recently shown to be involved in cellular defense against Mtb. To unveil the underlying mechanism of IL-36 induced antibacterial activity, we analyzed its role in the regulation of cholesterol metabolism, together with the involvement of Liver X Receptor (LXR) in this process. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL23572

30 Samples

Download data: TXT

(Submitter supplied) 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. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL16686

14 Samples

Download data: CEL