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Distinct gene expression signatures comparing latent tuberculosis infection with different routes of Bacillus Calmette-Guérin vaccination [blood]

ABSTRACT: RNA-Seq was utilized to provide an unbiased assessment of systemic and mucosal immunity using blood cells from LTBI subjects and recipients of ID and oral (PO) BCG.

ORGANISM(S): Homo sapiens

PROVIDER: GSE224055 | GEO | 2023/12/01

REPOSITORIES: GEO

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Distinct gene expression signatures comparing latent tuberculosis infection with different routes of Bacillus Calmette-Guérin vaccination

Project description:RNA-Seq was utilized to provide an unbiased assessment of systemic and mucosal immunity using blood cells from LTBI subjects and recipients of ID and oral (PO) BCG.

2023-12-01 | GSE223999 | GEO

Immunopeptidomics of Bacillus Calmette-Guérin (BCG)-infected Thp-1 cells

Project description:We have immunoprecipitated MHC class-I and class-II complexes from THP-1 macrophages infected with BCG, eluted MHC-bound peptides and analysed them by liquid chromatography tandem mass spectrometry.

2020-05-26 | PXD015646 | Pride

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 [bone marrow]

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

2020-06-30 | GSE124219 | GEO

Distinct gene expression signatures comparing latent tuberculosis infection with different routes of Bacillus Calmette-Guerin vaccination.

Project description:Tuberculosis remains an international health threat partly because of limited protection from pulmonary tuberculosis provided by standard intradermal vaccination with Bacillus of Calmette and Guérin (BCG); this may reflect the inability of intradermal vaccination to optimally induce pulmonary immunity. In contrast, respiratory Mycobacterium tuberculosis infection usually results in the immune-mediated bacillary containment of latent tuberculosis infection (LTBI). Here we present RNA-Seq-based assessments of systemic and pulmonary immune cells from LTBI participants and recipients of intradermal and oral BCG. LTBI individuals uniquely display ongoing immune activation and robust CD4 T cell recall responses in blood and lung. Intradermal BCG is associated with robust systemic immunity but only limited pulmonary immunity. Conversely, oral BCG induces limited systemic immunity but distinct pulmonary responses including enhanced inflammasome activation potentially associated with mucosal-associated invariant T cells. Further, IL-9 is identified as a component of systemic immunity in LTBI and intradermal BCG, and pulmonary immunity following oral BCG.

| S-EPMC10739751 | biostudies-literature

Transcriptomes of human neutrophils before and after in vivo exposure to Bacillus Calmette-Guérin vaccine

Project description:Innate immune memory is the phenomenon whereby innate immune cells undergo functional reprogramming after exposure to microbial components. In this study we apply epigenomic and transcriptomic analysis to circulating neutrophils from a clinical trial of BCG vaccination in healthy adults.

2020-09-30 | GSE153727 | GEO

H3K4me3 ChIP-seq of human neutrophils before and after in vivo exposure to Bacillus Calmette-Guérin vaccine

2020-09-30 | GSE153728 | GEO

Epigenomes and transcriptomes of human monocytes before and after in vivo exposure to Bacillus Calmette-Guérin vaccine

Project description:Innate immune memory is the phenomenon whereby innate immune cells such as monocytes or macrophages undergo functional reprogramming after exposure to microbial components. In this study, we apply epigenomic and transcriptomic analysis to a clinical trial of BCG vaccination in healthy adults.

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Epigenome-Wide Association Study of Bacillus Calmette Guerin vaccination in human circulating monocytes

Project description:Trained immunity is a phenomenon whereby innate immune cells such as monocytes or macrophages undergo functional reprogramming after exposure to certain microbial components, altering their responses to future exposures. This study profiled genome-wide DNA methylation in purified human monocytes 15 months after BCG vaccination.

2022-08-02 | GSE168779 | GEO

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