Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Early transcriptomic response of innate immune cells to subcutaneous BCG vaccination of mice

ABSTRACT: Bacille Calmette-Guerin (BCG) vaccination might contribute to nonspecific enhancement of resistance to various infections. Thus, BCG in addition to the formation of specific immunity against mycobacteria is also capable of inducing “trained immunity” - the ability of the innate immune system to maintain the memory of past infections and use it to develop immune defenses against new ones. In this study, we performed RNA sequencing of innate immune cells derived from mice bone marrow and spleen three day after subcutaneous BCG vaccination to evaluate early transcriptomic response of innate immune cells

ORGANISM(S): Mus musculus

PROVIDER: GSE261448 | GEO | 2024/05/20

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Similar Datasets

Gene expression and cytokine profile correlate with mycobacterial growth in a human BCG challenge model

Project description:Bacille Calmette Guerin (BCG) is the most widely administered vaccine in the world yet its mechanism of action remains unclear. In this study, we have used samples from a human mycobacterial challenge study in which previously BCG-vaccinated or BCG-naïve UK adults were challenged intradermally with a standard dose of BCG vaccine. BCG remaining at the site of vaccination was quantified by polymerase chain reaction from a skin biopsy sample taken two weeks post-challenge and was used as a measure of BCG growth and functional anti-mycobacterial immunity. Using gene expression microarrays and flow cytometric analysis of intracellular cytokine production, we show that the magnitude of the immune response is greater in previously vaccinated volunteers and that this correlates with reduced mycobacterial growth but increased scarring at the vaccination site. In particular the IFNγ and IL-17 pathways are strongly induced in previously vaccinated volunteers and correlate with reduced mycobacterial growth in this population. This study supports the use of BCG challenge as a tool for evaluating vaccine efficacy and identifying mechanisms of anti-mycobacterial immunity

2014-12-01 | GSE58636 | GEO

BCG vaccination stimulates Integrated Organ Immunity by feedback of the adaptive immune response to imprint prolonged innate antiviral resistance

Project description:Bacille Calmette-Guérin (BCG) vaccination can confer non-specific protection against heterologous pathogens. However, the underlying mechanisms remain mysterious. We used scRNA-seq in this study to identify transcriptional changes in the immune and epithelial cells in the lungs following BCG vaccination in mice

2023-12-04 | GSE244126 | GEO

Stronger induction of trained immunity by mucosal BCG or MTBVAC vaccination

Project description:Vaccination against tuberculosis by intradermal Bacillus Calmette-Guérin (BCG) injection saves many lives, supposedly by inducing adaptive immune memory in lymphocytes. Epidemiologically, BCG vaccination is also associated with reduced childhood mortality unrelated to TB, which is attributed to innate immune memory, also termed trained immunity. We recently demonstrated improved protection against tuberculosis infection in highly susceptible rhesus macaques by mucosal BCG vaccination, correlating with a unique local but no peripheral immune profile. Here, we investigated local and peripheral innate immune function after intradermal versus mucosal vaccination with M. bovis BCG or the live attenuated, M. tuberculosis-derived candidate, MTBVAC. The results demonstrate an augmented frequency of trained immunity in monocytes after respiratory mucosal administration of live attenuated mycobacterial vaccines compared to intradermal immunization, with MTBVAC being equally potent as BCG. These results provide further support to strategies for improving TB vaccination and, more broadly, modulating innate immunity via mucosal surfaces.

2021-01-27 | GSE159046 | GEO

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

Maternal BCG scar is associated with enhanced infant proinflammatory responses

Project description:Prenatal exposures such as infections and immunisation may influence infant responses. We had an opportunity to undertake an analysis of responses in infants within the context of a study investigating the effects of maternal mycobacterial exposures and infection on bacille Calmette-Guerin (BCG) vaccine-induced responses in Ugandan infants. Gene expression profiles for pathways associated with maternal LTBI and with maternal BCG scar were examined using samples collected at one (n=42) and six (n=51) weeks after BCG immunisation using microarray. Interferon and inflammation response pathways were up-regulated in infants of mothers with LTBI at six weeks, and in infants of mothers with a BCG scar at one and six weeks after BCG immunisation. Maternal BCG scar had a stronger association with infant responses than maternal LTBI, with an increased proinflammatory immune profile.

2016-10-12 | GSE87801 | GEO

Gene expression analysis of peripheral blood mononuclear cells prior to and following vaccination of human volunteers with the novel TB vaccine candidate MVA85A

Project description:A greater understanding of the relationships between a vaccine, the immune response it induces, and protection from disease would greatly facilitate vaccine development. Modified Vaccinia virus Ankara expressing antigen 85A (MVA85A) is a novel tuberculosis (TB) vaccine designed to enhance responses induced by Bacille Calmette-Guerin (BCG). Antigen-specific interferon-γ (IFN-γ) production is greatly enhanced by MVA85A and peaks one week post-vaccination, however, the variability in response between healthy individuals is extensive. In this study we have sought to characterize the early changes in gene expression following vaccination with MVA85A and understand how these are related to long-term immunogenicity. 24 volunteers were vaccinated with 10^8 pfu MVA85A. 12 volunteers were vaccinated intramuscularly and 12 intradermally. Volunteers were healthy and did not have HIV, HCV, HBV or latent or active tuberculosis. Blood for this study was taken on the day of vaccination, immediately prior to the vaccine being given (day 0), and 2 and 7 days post-vaccination. Volunteers with a prior BCG vaccination were vaccinated with 1x10^8 pfu MVA85A either intradermally (id) or intramuscularly (im). Blood was taken immediately prior to vaccination (day 0) and 2 and 7 days post-vaccination. PBMCs were separated and frozen down. PBMCs were then thawed and RNA was extracted directly for microarray analysis. Some arrays contain control samples: from volunteers, incubated with either media alone or antigen 85, MVA85A or MVA wild type. These samples were used separately.

2012-09-28 | E-GEOD-40719 | biostudies-arrayexpress

Human Bacille Calmette-Guérin vaccination elicits trained immunity via the hematopoietic progenitor compartment [PBMC]

Project description:Induction of trained immunity by human Bacille-Calmette-Guérin (BCG) vaccination is implicated in the beneficial heterologous effects of the vaccine, but the underlying mechanisms remain elusive. We performed global transcriptome analysis of sorted progenitors from bone marrow before (D0) and 90 days after vaccination (D90). BCG vaccination induced transcriptomic myeloid priming of the hematopoietic stem and progenitor cell (HSPC) compartment marked by the upregulation of myeloid and granulocytic pathways alongside the induction of transcription factors connected to myeloid cell function, namely Hepatocyte Nuclear Factors (HNF). These findings are corroborated by higher granulocyte numbers in BCG-vaccinated infants, HNF1-related SNP variants correlating with immune training and elevated serum levels of the HNF1 target gene SERPINA1. Taken together, we reveal a transcriptomic reprograming of HSPCs and peripheral monocytes as a trait of in vivo BCG-induced trained immunity.

2020-06-30 | GSE124217 | GEO

Human Bacille Calmette-Guérin vaccination elicits trained immunity via the hematopoietic progenitor compartment [ATAC-seq]

2020-06-30 | GSE124219 | GEO

Human Bacille Calmette-Guérin vaccination elicits trained immunity via the hematopoietic progenitor compartment [bone marrow]

2020-06-30 | GSE124218 | GEO

Multi-omics analysis of human population variation in immune function and in vivo response to BCG vaccination

Project description:Immune responses are tightly regulated, yet highly variable between individuals. To investigate human population variation of trained immunity, we immunized healthy individuals with Bacillus Calmette-Guérin (BCG). This live attenuated vaccine induces not only an adaptive immune response against tuberculosis, but also triggers innate immune activation and memory. We established personal immune profiles and chromatin accessibility maps over a time course of BCG vaccination in 323 individuals. This large resource uncovered genetic and epigenetic predictors of baseline immunity and BCG vaccine response. We found that BCG vaccination enhances the innate immune response only in individuals with dormant immune states at baseline, suggesting that exogeneous induction of trained immunity is not a universal booster of innate immunity, but specifically elevates weak innate immune responses. This study advances our understanding of BCG’s heterologous immune-stimulatory effects and trained immunity in humans. Moreover, our results highlight the value of epigenetic cell states as an “endophenotype” that connects immune function with genotype and the environment.

2024-01-08 | GSE241092 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data