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Impact of metformin treatment on CD8 in non and BCG-vaccinated mice

ABSTRACT: Impact of metformin treatment on CD8 in non and BCG-vaccinated mice

PROVIDER: PRJNA587714 | ENA |

REPOSITORIES: ENA

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Impact of metformin treatment on CD8 in non and BCG-vaccinated mice

Project description:The aim is to identify important metabolic and immune signaling pathways in memory CD8 T cells regulated by metformin and understand its implications on BCG-vaccination

2020-09-02 | GSE139948 | GEO

PBMC expression profiles of BCG vaccine protected infants and of BCG vaccinated infants who develop tuberculosis disease

Project description:Analysis of PBMC from 10 week old infants vaccinated with BCG at birth. During follow-up 26 infants developed tuberculosis (TB) (non-protected by BCG) and 20 infants did not develop TB despite documented exposure (protected by BCG). PBMC were stimulated with media only or reconstituted BCG for 4 and 12 hours. Results provide insight into the mechanisms behind the failure of BCG to protect against disease.

2014-06-30 | GSE20716 | GEO

RNA-Seq of mouse lung vaccinated with subcutaneous BCG and two novel tuberculosis mucosal boosting nanovaccines

Project description:Mice were left unvaccinated (Naive) or vaccinated with either BCG alone (BCG) or BCG followed by two intranasal boosting of novel nanovaccines Nano-FP1 or Nano-FP2, 12 and 14 weeks later. A group of mice were also administered a 3rd boost of the corresponding nanovaccine 25 weeks after sc. BCG. Mice were sacrificed at 2, 11 and 14 weeks after second boosting, and bronchoalveolar lavage (BAL) and lung parenchyma (Lung) were extracted for RNA-Seq. The group of mice administered a 3rd boosting was the group sacrificed at 14 weeks time-point.

2021-01-28 | E-MTAB-9449 | biostudies-arrayexpress

Anti-mycobacterial activity correlates with altered DNA methylation pattern in immune cells from BCG-vaccinated subjects

Project description:The reason for the largely variable protective effect against TB of the vaccine Bacille Calmette-Guerin (BCG) is not understood. In this study, we investigated whether epigenetic mechanisms are involved in the response of immune cells to the BCG vaccine. We isolated peripheral blood mononuclear cells (PBMCs) from BCG-vaccinated subjects and performed global DNA methylation analysis in combination with functional assays representative of innate immunity against Mycobacterium tuberculosis infection. Enhanced containment of replication was observed in monocyte-derived macrophages from a sub-group of BCG-vaccinated individuals (identified as ‘responders’). A stable and robust differential DNA methylation pattern in response to BCG could be observed in PBMCs isolated from the responders but not from the non-responders. Gene ontology analysis revealed that promoters with altered DNA methylation pattern were strongly enriched among genes belonging to immune pathways in responders, however no enrichments could be observed in the non-responders. Our findings suggest that BCG-induced epigenetic reprogramming of immune cell function can enhance anti-mycobacterial immunity. Understanding why BCG induces this responses in responders but not in nnon-responders could provide clues to improvement of TB vaccine efficacy.

2017-09-27 | GSE104287 | GEO

Gene expression analysis of alveolar macrophages from BCG-vaccinated and CoMtb mice stimulated ex vivo [exvivoRNAseq]

Project description:The aim of this study was to measure the response of alveolar macrophages (AMs) from BCG-vaccinated mice and mice with CoMtb to LPS, PAM3CSK4, and Mtb stimulation ex vivo.

2023-11-30 | GSE212203 | GEO

MicroRNA expression profiling of PPD stimulated bovine PBMC from M. bovis-challenged control and BCG vaccinated cattle

Project description:Micro RNA profiling was performed on in vitro PPDB and nil stimulated bovine PBMCs isolated from BCG vaccinated and unvaccinated cattle before and after challenge with M. bovis.

2014-06-01 | E-MTAB-2291 | biostudies-arrayexpress

The innate and adaptive immune response to BCG stimulation in splenocytes taken from C57BL/6 mice

Project description:The aim of this experiment was to investigate differential gene expression in splenocytes stimulated with BCG from naïve and BCG vaccinated mice. The differences between naïve and BCG vaccinated mice might indicate the mechanisms by which BCG vaccination confers an enhanced ability of splenocytes from BCG vaccinated mice to inhibit growth of BCG in splenocyte cultures as compared with splenocytes from naive animals. Splenocytes from 4 naïve and 4 BCG vaccinated female C57bl/6 mice were cultured for 12 hours with BCG (MOI 1:1) or without (unstimulated control). Each animal had a stimulated and an unstimulated sample hybridised to a beadchip.

2013-06-01 | E-GEOD-42090 | biostudies-arrayexpress

The innate and adaptive immune response to BCG stimulation in splenocytes taken from C57BL/6 mice

2013-06-01 | GSE42090 | GEO

Gene expression analysis of mouse alveolar macrophages infected with Mycobacterium tuberculosis isolated from BCG-vaccinated mice [balRNAseq]

Project description:The aim of this study was to measure the immune response of alveolar macrophages (AMs) from BCG-vaccinated mice to intracellular Mtb infection in vivo. We characterized the transcriptional profile of murine Mtb-infected AMs after aerosol infection by sorting cells from bronchoalveolar lavage fluid and performing low-input RNA-sequencing.

2023-11-30 | GSE212202 | GEO

Transcriptomic blood responses to mycobacteria in a BCG challenge model

Project description:Cattle were vaccinated at week 0 with the live attenuated M. bovis BCG SSI vaccine strain; some animals remain as non-vaccinated controls. After eight weeks animals were challenged intranodally with 108 BCG Tokyo cfu. Lymph nodes were harvested at week 11 and bacterial load in lymph nodes evaluated. Some BCG vaccinates had bacterial loads similar to those found in non-vaccinated animals (not-protected) and some animals had lower bacterial loads (protected) than non-vaccinated animals. Immune responses to mycobacteria were monitored in vitro by stimulation of whole blood with medium, purified protein derivative from M. bovis (PPD-B) or live BCG Tokyo longitudinally. Blood samples from 6 BCG-protected, 6 BCG-not-protected and 6 not-vaccinated. Challenged cattle stimulated with mycobacterial antigens or not were used to prepare RNA for RNAseq analysis at weeks 0 (vaccination), 8 (challenge), 9, 10 and 11. The outcome of this project would help not only in the selection of vaccine candidates but would also inform on the formulation of novel vaccines/vaccination strategies.

2018-07-30 | GSE84867 | GEO

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