Expression data from Prkch-/-Apoe-/- mouse
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE37841 | GEO | 2016/07/31
SECONDARY ACCESSION(S): PRJNA164669
REPOSITORIES: GEO
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2017-10-05 | GSE90983 | GEO
Project description:Microarray gene expression profiling of aorta genes of APOE-deficient mice receiving atherosclerosis treatment with the ACE inhibitor captopril. Hypercholesterolemic APOE-deficient mice were used as a standard model of atherosclerosis to study gene expression changes during atherosclerosis treatment with the ACE inhibitor captopril. Microarray analysis was performed of whole aortas isolated from captopril-treated APOE-deficient mice relative to untreated APOE-deficient mice with overt atherosclerosis, and nontransgenic control mice. Microarray gene expression profiling revealed that captopril-mediated atherosclerosis prevention involved inhibition of aorta-infiltrating immune cells such as pro-atherogenic T lymphocytes and macrophages. Experiment Overall Design: Microarray gene expression profiling was performed of whole aortas isolated from APOE-deficient mice with atherosclerosis relative to captopril-treated APOE-deficient mice, and nontransgenic control mice. Three study groups were analyzed, i.e. 8-months-old untreated APOE-deficient mice with overt atherosclerosis, age-matched APOE-deficient mice treated for 7 months with the angiotensin-converting enzyme (ACE) inhibitor, captopril (20 mg/kg in drinking water), and nontransgenic control C57BL/6J mice. Two biological replicates were made of each group, and total RNA of three aortas was pooled for one gene chip.
2009-12-14 | E-GEOD-19286 | biostudies-arrayexpress
Project description:The goal of this study is to determine whether A1 adenosine receptor (ADORA1) plays a role in atherosclerosis development and its possible mechanisms. This dataset compares gene expression (aortas) of ADORA1 knockout mice to ADORA1+APOE double-knockout mice. Mice deficient in both ADORA1 and APOE (DKO) demonstrated reduced atherosclerotic lesions in aortic arch (en face), aortic root, and innominate arteries when compared to (APOE-KO) of the same age. Treating APOE-KO with the ADORA1 antagonist DPCPX also achieved concentration-dependent reduction in lesions. The total plasma cholesterol and triglyceride levels were not different between DKO and APOE-KO, however, higher triglyceride was observed in DKO fed a high-fat diet. DKO also were heavier than APOE-KO. Plasma cytokine levels (IL-5, IL-6, and IL-13) were significantly lower in DKO. Proliferating cell nuclear antigen (PCNA) expression was also significantly reduced in the aorta from DKO. Despite smaller lesions in DKO, the composition of the innominate artery lesions and cholesterol loading and effusion [export] from bone-marrow-derived macrophages from DKO were not different from APOE-KO.
2015-06-02 | GSE39888 | GEO
Project description:Microarray gene expression profiling of aorta genes of APOE-deficient mice receiving atherosclerosis treatment with the ACE inhibitor captopril. Hypercholesterolemic APOE-deficient mice were used as a standard model of atherosclerosis to study gene expression changes during atherosclerosis treatment with the ACE inhibitor captopril. Microarray analysis was performed of whole aortas isolated from captopril-treated APOE-deficient mice relative to untreated APOE-deficient mice with overt atherosclerosis, and nontransgenic control mice. Microarray gene expression profiling revealed that captopril-mediated atherosclerosis prevention involved inhibition of aorta-infiltrating immune cells such as pro-atherogenic T lymphocytes and macrophages.
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Project description:ApoE-/- atherosclerosis reversal
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Project description:Strain effects on the response to cholesterol loading in bone marrow derived macrophages (BMM) are not well studied. The atherosclerosis susceptible strain, DBA/2 on the ApoE deficient background and the atherosclerosis resistant AKR strains show differences in cholesterol handling when loaded with AcLDL. To understand the molecular basis for these differences, BMM from both strains were loaded with acetylated low desnisty lipoprotein (AcLDL) and gene expression quantified. BMMs from AKR greatly upregulated transcripts involved in the lysosomal trafficking pathway. This experiment strongly suggest that upregualtion of the lysosomal pathway in response to AcLDL maybe protective against atherosclerosis. In addition we find that transcripts containing the sterol response element (SRE) motif had strong strain-loading interactions suggesting a strain response to SRE response.
2013-06-30 | GSE38736 | GEO
Project description:Background: Atherosclerosis leads high mortality, highlighting an urgent need for new therapeutic strategies. Protein kinases orchestrate multiple cellular events in atherosclerosis and may provide new therapeutic targets for atherosclerosis. Here, we identified a protein kinase, WEE1 G2 checkpoint kinase (WEE1), promoting inflammatory response in atherosclerosis. Methods: The ApoE-/- mice without macrophage-specific WEE1 deletion (ApoE-/-WEE1f/f) and ApoE-/- mice with macrophage-specific WEE1 deletion (ApoE-/-WEE1MCKO) were generated using bone marrow transplantation. These mice and WEE1 inhibitor MK1775 were used in a high-fat diet (HFD)-induced atherosclerotic model. Human atherosclerotic tissues, mouse primary peritoneal macrophages (MPMs), 293T cells, and recombinant proteins were utilized to investigate the pathogenic role and underlying mechanisms of WEE1. Results: We identified up-regulated p-WEE1 in macrophages in atherosclerotic lesions of HFD-fed ApoE-/- mice. Transcriptome sequencing analysis indicated that WEE1 promotes oxLDL-induced inflammation in macrophages. We then demonstrated that macrophage-specific deletion or pharmacological inhibition of WEE1 attenuates atherosclerosis by reducing inflammation both in vivo and in vitro. The overexpression of wild-type WEE1 or activating-mutant WEE1, but not inactivating-mutant WEE1, exacerbates inflammation in macrophages. Mechanistically, transcriptome sequencing analysis and co-immunoprecipitation followed by quantitative proteomics analysis identified p65 as a binding protein of WEE1. We confirmed that WEE1 directly interacts with the RHD domain of p65 via kinase domain and phosphorylates p65 at S536, thereby facilitating subsequent NF-κB activation and inflammatory response in macrophages. Conclusions: Our findings demonstrated that macrophage WEE1 promotes inflammatory atherosclerosis by directly binding to p65 and phosphorylate it at S536. This study provides WEE1 as a new p65 regulator in inflammation and a potential therapeutic target for atherosclerosis.
2024-03-25 | PXD050932 | Pride
Project description:Apolipoprotein E-knock out (apoE-KO) mouse is known as a model animal for atherosclerosis accompanied by spontaneous hypercholesterolemia. When apoE-KO mice were fed a chow supplemented with 1.25% cholesterol (high-Chol diet), cholesterol and bile acids were highly increased in the liver within a week. However, the amount of triacylglycerol (TG) in very low-density lipoprotein (VLDL), but not in the liver, was reduced by 78%. The epididymal adipose tissue was almost diminished in the long term. Cholesterol metabolism is tightly regulated by both cholesterol and its metabolites in the mammalian liver, but the regulatory mechanism of TG synthesis remains to be elucidated. To evaluate the impact of high-Chol diet for 1 week on gene expression in the liver of apoE-KO mice, DNA microarray analysis was performed with comparison to apoE-KO mice fed a normal chow. We found that mRNA expression related to lipid metabolism was suppressed by the high-Chol diet in the liver of apoE-KO mice, which includes beta-oxidation and glycerol-3-phosphate (G3P) pathway for TG synthesis. In particular, the mRNA and protein expression of lipin-1 and lipin-2 was markedly decreased. PGC-1?, which up-regulates the transcription of lipin-1, was also suppressed. Lipin is reported to function as a coactivator of PGC-1? and is an inducible amplifier of PPAR?, indicating that the suppression of genes involved in beta-oxidation could be induced by suppression of the lipins. These data using apoE-KO mice indicate that cholesterol and its metabolites are involved in regulating TG metabolism through a suppression of lipin-1 and lipin-2 in the liver. This research provides evidence for the mechanism of lipin expression in the liver. Apo E-KO mice at 10 weeks of age were fed normal chow (control) or high-Chol diet containing 1.25% cholesterol for 1 week. Three independent experiments were performed at each diet.
2011-08-07 | E-GEOD-27457 | biostudies-arrayexpress
Project description:Atherosclerosis is a systemic and chronic inflammatory disease propagated by monocytes and macrophages. Yet, our knowledge on how transcriptional profiles of these cells evolve in time and space is limited. We aimed at characterizing gene expression changes in site-specific macrophages, i.e. atherosclerotic aorta versus remote peritoneal cavity, and in circulating monocytes during the course of atherosclerosis initiation and progression in Apoe deficient mice. Constructing a comparative directory of cell type- and disease stage-specific whole transcriptome information, we identified a distinctive gene regulation profile of aortic macrophages. Overall 1149 differentially expressed genes (DEG) were involved in the biological modulation of aortic macrophages, and they were further categorized into regulated early, late, and transitorily throughout the disease course. The commonality of gene regulation was surprisingly low among the three investigated cell types. Through complementary interrogation of murine and human single cell RNA sequencing datasets, we showcased the practicality of our directory, using the selected gene, Glycoprotein Nmb (Gpnmb), whose expression in aortic macrophages, and a subset of foamy macrophages in particular, strongly correlated with disease advancement during atherosclerosis initiation and progression. Our study provides a unique toolset to explore gene regulation of macrophage-related biological processes in and outside the atheromatous plaque at early and advanced disease stages for pathomechanistic insight and therapeutic target screening.
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Project description:Hypercholesterolemic APOE-deficient mice are a widely used experimental model of atherosclerosis and increased generation of reactive oxygen species (ROS) is a prominent feature of atherosclerosis development. To study the impact of ROS on atherogenesis, we treated APOE-deficient mice for 7 months with the antioxidant vitamin E (2000 IU/kg diet) and performed whole genome microarray gene expression profiling of aortic genes. Microarray gene expression profiling was performed of whole aortas isolated from vitamin E-treated APOE-deficient relative to untreated APOE-deficient mice with overt atherosclerosis, and nontransgenic B6 control mice. Microarray gene expression profiling revealed that vitamin E treatment prevented atherosclerosis-related gene expression changes of the aortic intima and media. Microarray gene expression profiling was performed of whole aortas isolated from APOE-deficient mice with atherosclerosis relative to vitamin E-treated APOE-deficient mice, and nontransgenic B6 control mice. Three study groups were analyzed, i.e. 8 months-old untreated APOE-deficient mice with overt atherosclerosis, age-matched APOE-deficient mice treated for 7 months with the antioxidant vitamin E (2000 IU/kd diet), and nontransgenic B6 control (C57BL/6J) mice. Two biological replicates were made of each group, and total RNA of three aortas was pooled for one gene chip. The study complements microarray study GSE19286.
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