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Expression of genes in the aortic wall of ApoE–/– and ApoE–/–CKIP-1–/– mice

ABSTRACT: Expression of genes in the aortic wall of ApoE–/– and ApoE–/–CKIP-1–/– mice

PROVIDER: PRJNA431760 | ENA |

REPOSITORIES: ENA

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Expression of genes in the aortic wall of ApoE–/– and ApoE–/–CKIP-1–/– mice

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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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Project description:Inbred mouse strains C57BL/6J (B6) and C3H/HeJ (C3H) exhibit a marked difference in their susceptibility to atherosclerosis and the arterial wall has proven to be a source of the difference in atherosclerosis susceptibility. Genome-wide gene expression analysis was conducted in aortic walls of the two strains. Total RNA was extracted from aortas of 6-week-old female B6 and C3H apoE-deficient (apoE-/-) mice fed a chow or Western diet. 1514 genes in chow fed mice and 590 genes in Western fed mice were found to be differentially expressed between the two strains. RNA was extracted from aorta using a Trizol protocol. Total RNA was pooled in an equal amount from 4 mice for each group. Standard Affymetrix procedures were performed using 8ug of total RNA. Microarrays were used to detect gene expression in aortic walls of two apoE-deficient mouse strains when fed a chow or western diet. Keywords: atherosclerosis, arterial walls, C57BL/6, C3H/HeJ, Inbred strains, Hyperlipidemia, and Western diet

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