GENE EXPRESSION OF BOVINE PERIPHERAL BLOOD MONONUCLEAR CELLS IN VITRO CHALLENGED WITH MYCOBACTERIUM BOVIS

2016 ◽  
Vol 42 (04) ◽  
pp. 195-201
Author(s):  
Yafen Cheng ◽  
Chung-Hsi Chou ◽  
Hsiang-Jung Tsai
Keyword(s):  
Gene Expression ◽  
Mycobacterium Bovis ◽  
Peripheral Blood Mononuclear Cells ◽  
Peripheral Blood ◽  
Intracellular Signaling ◽  
Mononuclear Cells ◽  
Expression Profiles ◽  
Peripheral Blood Mononuclear ◽  
Blood Mononuclear Cells

Mycobacterium bovis (M. bovis) is causative agent of tuberculosis in cattle and humans populations. To understand its effects on gene expression profiles, we conducted an in vitro time-course study to identify transcriptional changes in infected bovine peripheral blood mononuclear cells (PBMCs), using quantitative RT-PCR. We discovered a likely involvement of C-type lectin domain family 4, member E (CLEC4E) in triggering a series of negative intracellular signaling via Syk/CARD9 pathway for cytokines, as early as 24 h post-infection (hpi). This is the first report confirming induction of CLEC4E and the Syk/CARD9 pathway in PBMCs in response to M. bovis infection, and these findings support the view that M. bovis inhibits signaling pathways of antimycobacterial host defense in bovine cells. In addition, M. bovis infection in PBMCs may suppress apoptosis by interfering with TNF-[Formula: see text] signaling. This study, contributes to a better understanding of M. bovis-reduced signal transduction and microbial changes in PBMCs earlier than 24 hpi.

scholarly journals An Isocaloric Nordic Diet Modulates RELA and TNFRSF1A Gene Expression in Peripheral Blood Mononuclear Cells in Individuals with Metabolic Syndrome—A SYSDIET Sub-Study

Nutrients ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2932 ◽  
Author(s):  
Stine M. Ulven ◽  
Kirsten B. Holven ◽  
Amanda Rundblad ◽  
Mari C. W. Myhrstad ◽  
Lena Leder ◽  
...  
Keyword(s):  
Gene Expression ◽  
Metabolic Syndrome ◽  
Peripheral Blood Mononuclear Cells ◽  
Peripheral Blood ◽  
Mononuclear Cells ◽  
Expression Profiles ◽  
Control Diet ◽  
Peripheral Blood Mononuclear ◽  
Nordic Diet ◽  
Blood Mononuclear Cells

A healthy dietary pattern is associated with a lower risk of metabolic syndrome (MetS) and reduced inflammation. To explore this at the molecular level, we investigated the effect of a Nordic diet (ND) on changes in the gene expression profiles of inflammatory and lipid-related genes in peripheral blood mononuclear cells (PBMCs) of individuals with MetS. We hypothesized that the intake of an ND compared to a control diet (CD) would alter the expression of inflammatory genes and genes involved in lipid metabolism. The individuals with MetS underwent an 18/24-week randomized intervention to compare a ND with a CD. Eighty-eight participants (66% women) were included in this sub-study of the larger SYSDIET study. Fasting PBMCs were collected before and after the intervention and changes in gene expression levels were measured using TaqMan Array Micro Fluidic Cards. Forty-eight pre-determined inflammatory and lipid related gene transcripts were analyzed. The expression level of the gene tumor necrosis factor (TNF) receptor superfamily member 1A (TNFRSF1A) was down-regulated (p = 0.004), whereas the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) subunit, RELA proto-oncogene, was up-regulated (p = 0.016) in the ND group compared to the CD group. In conclusion, intake of an ND in individuals with the MetS may affect immune function.

Evaluation of the action of LPSF/GQ-16 on cytokines and PPAR-γ gene expression after in vitro irradiation of peripheral blood mononuclear cells

2021 ◽  
pp. 1-22
Author(s):  
Mariana Brayner Cavalcanti ◽  
Lídia Lúcia Bezerra Leite ◽  
Diogo Manoel de Queiroz ◽  
Thiago de Salazar e Fernandes ◽  
Wagner Luís Mendes de Oliveira ◽  
...  
Keyword(s):  
Gene Expression ◽  
Peripheral Blood Mononuclear Cells ◽  
Peripheral Blood ◽  
Mononuclear Cells ◽  
Peripheral Blood Mononuclear ◽  
Ppar Γ ◽  
Blood Mononuclear Cells

scholarly journals Associations between dietary patterns and gene expression pattern in peripheral blood mononuclear cells: a cross-sectional study

2020 ◽  
Author(s):  
Jacob J. Christensen ◽  
Stine M. Ulven ◽  
Magne Thoresen ◽  
Kenneth Westerman ◽  
Kirsten B. Holven ◽  
...  
Keyword(s):  
Gene Expression ◽  
Network Analysis ◽  
Peripheral Blood Mononuclear Cells ◽  
Dietary Patterns ◽  
Peripheral Blood ◽  
Mononuclear Cells ◽  
Expression Profiles ◽  
Gene Clusters ◽  
Peripheral Blood Mononuclear ◽  
Blood Mononuclear Cells

AbstractBackgroundDiet may alter gene expression in immune cells involved in cardio-metabolic disease susceptibility. However, we still lack a robust understanding of the association between diet and immune cell-related gene expression in humans.ObjectiveOur objective was to examine the associations between dietary patterns (DPs) and gene expression profiles in peripheral blood mononuclear cells (PBMCs) in a population of healthy, Norwegian adults.MethodsWe used factor analysis to define a posteriori DPs from food frequency questionnaire-based dietary assessment data. In addition, we derived interpretable features from microarray-based gene expression data (13 967 transcripts) using two algorithms: CIBERSORT for estimation of cell subtype proportions, and weighted gene co-expression network analysis (WGCNA) for cluster discovery. Finally, we associated DPs with either CIBERSORT-predicted PBMC leukocyte distribution or WGCNA gene clusters using linear regression models. All analyses were gender-stratified (n = 130 women and 105 men).ResultsWe detected three DPs that broadly reflected Western, Vegetarian, and Low carbohydrate diets. CIBERSORT-predicted percentage of monocytes associated strongly and negatively with the Vegetarian DP in both women and men. For women, the Vegetarian DP associated most strongly with a large gene cluster consisting of 600 genes mainly involved in regulation of DNA transcription. For men, the Western DP inversely associated most strongly with a smaller cluster of 36 genes mainly involved in regulation of metabolic and inflammatory processes. In subsequent protein-protein interaction network analysis, the most important driver genes within these WGCNA gene clusters seemed to physically interact in biological networks.ConclusionsDPs may affect percentage monocytes and regulation of key biological processes within the PBMC pool. Although the present findings are exploratory, our analysis pipeline serves a useful framework for studying the association between diet and gene expression.

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