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Effects of model chylomicron remants on gene expresssion in human aortic endothelial cells (HAEC)

ABSTRACT: Global gene experssion study of the HAEC transcriptional response to artificial chlyomicron remnant-like particles (A-CRLPs) prepared with triglycerides extracted from four natural dietary oils: fish, DHASCO, corn and palm oils. We hypothesised that A-CRLPs could differentially regulate HAEC gene expression according to thier triglyceride content. These data provide an important starting point for investigations into the effects of A-CRLPs on endothelial cells, particulary genes involved in redox balance and inflammatory processes.

ORGANISM(S): Homo sapiens

PROVIDER: GSE80067 | GEO | 2016/05/19

SECONDARY ACCESSION(S): PRJNA317739

REPOSITORIES: GEO

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Effects of model chylomicron remants on gene expresssion in human aortic endothelial cells (HAEC)

Project description:Global gene experssion study of the HAEC transcriptional response to artificial chlyomicron remnant-like particles (A-CRLPs) prepared with triglycerides extracted from four natural dietary oils: fish, DHASCO, corn and palm oils. We hypothesised that A-CRLPs could differentially regulate HAEC gene expression according to thier triglyceride content. These data provide an important starting point for investigations into the effects of A-CRLPs on endothelial cells, particulary genes involved in redox balance and inflammatory processes. Six experimental conditions: PBS (extra control), Primary/main control remnant control (RC), Fish, DHASCO, Corn or Palm A-CRLPs n = 4 biological replicates (i.e. 4 HAEC batches from different donors)

2016-05-19 | E-GEOD-80067 | biostudies-arrayexpress

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The effects of 3OC12-HSL on global gene expression in primary human aortic endothelial cells (HAEC).

Project description:Analysis of the effect of a bacterial quorum sensing molecule on in-vitro culture of human endothelial cells at gene expression levels. Objective: Chronic infection has long been postulated as a stimulus for atherogenesis. Pseudomonas aeruginosa infection has been associated with increased atherosclerosis in rats, and the bacteria produce a quorum sensing molecule 3-oxo-dodecynoyl-homoserine lactone (3OC12-HSL) that is critical for colonization and virulence. Paraoxonase 2 (PON2) hydrolyzes 3OC12-HSL and also protects against the effects of oxidized phospholipids thought to contribute to atherosclerosis. We now report the response of human aortic endothelial cells (HAEC) to 3OC12-HSL and oxidized 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine (Ox-PAPC) in relation to PON2 expression. Methods and Results: Using expression profiling and network modeling, we identified the unfolded protein response (UPR), cell cycle genes, and the MAPK signaling pathway to be heavily involved in the HAEC response to 3OC12-HSL. The network also showed striking similarities to a network created based on HAEC response to Ox-PAPC, a major component of minimally-modified LDL. HAEC in which PON2 was silenced by siRNA showed increased pro-inflammatory and UPR responses when treated with 3OC12-HSL or Ox-PAPC. Conclusion: 3OC12-HSL and Ox-PAPC influence similar inflammatory pathways. Quorum sensing molecules such as 3OC12-HSL contribute to the pro-atherogenic effects of chronic infection and the anti-atherogenic effects of PON2 include destruction of quorum sensing molecules.

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The effects of 3OC12-HSL on global gene expression in primary human aortic endothelial cells (HAEC).

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Project description:Atherosclerosis (AS), which is a chronic inflammatory disease, is the leading cause of death worldwide. Although several miRNAs have been reported to participate in regulating the progression of AS, there is a lack of systematic study of miRNA profile in AS. We combined miRNA and mRNA array analysis to study the global miRNAs in two AS models-oxidative LDL treated human aortic endothelial cells (HAEC) and high fat diet fed ldlr W483Stop knockin mouse. Novel miRNAs were identified to function in AS through inflammation and apoptosis pathways.

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