Browse
Submit Data
Databases
API
Help

Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Differential microRNA response to a high-cholesterol, high-fat diet in livers of low and high LDL-C baboons

ABSTRACT: Dysregulation of microRNAs (miRNAs) expression has been implicated in molecular genetics events leading to the progression and development of atherosclerosis. We hypothesized that miRNA expression profiles differ between baboons with low and high serum low-density lipoprotein cholesterol (LDL-C) concentrations in response to diet, and that a subset of these miRNAs regulate genes relevant to dyslipidemia and risk of atherosclerosis. We generated small RNA libraries from baboons differing in their LDL-C response to dietary fat and cholesterol (low LDL-C, n = 3; high LDL-C, n = 3) using liver biopsies collected before and after a high-cholesterol, high-fat (HCHF) challenge diet. We sequenced the libraries using Next-Generation Illumina sequencing methods, analyzed the data using mirTools software and identified 517 baboon miRNAs: 490 homologous to human and 27 novel miRNAs. HCHF diet elicited expression of more miRNAs compared to baseline (chow) diet for both low and high LDL-C baboons. Seventeen miRNAs exhibited significant differential expression in response to HCHF diet in high LDL-C baboons compared to nine miRNAs in low LDL-C baboons. Putative miRNA targets were identified with TargetScan/Base tools. miRNAs significantly targeted more genes in high LDL-C baboons compared to low LDL-C responders. Further, we identified miRNA isomers and other non-coding RNAs that were differentially expressed in response to the challenge diet.Our discovery of differentially expressed baboon miRNAs and their targets is a fundamental step in understanding the role of non-coding RNAs in the modulation of dsylipidemia.

ORGANISM(S): Papio hamadryas

SUBMITTER: Genesio Karere

PROVIDER: E-GEOD-37249 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Json Xml

Similar Datasets

Identification of coordinately regulated microRNA-gene networks that differ in baboons discordant for LDL-Cholesterol

Project description:Although the mechanisms underlying development of atherosclerosis are not well understood, LDL-C is known to influence expression of endothelial microRNAs (miRNAs) and gene-targets of miRNAs to promote cell senescence. However, the impact of LDL-C on expression of PBMC miRNAs and miRNA targeted genes in response to an atherogenic diet is not known. We hypothesized that miRNA expression profiles differ between baboons with low and high serum low-density lipoprotein cholesterol (LDL-C) concentrations in response to diet, and that microRNA-gene networks in baboons discordant for LDL-Cholesterol We generated small RNA libraries from baboons differing in their LDL-C response to dietary fat and cholesterol (low LDL-C, n = 3; high LDL-C, n = 3) using liver biopsies collected before and after a high-cholesterol, high-fat (HCHF) challenge diet. We sequenced the libraries using Next-Generation Illumina sequencing methods, analyzed the data using mirTools software and identified 517 baboon miRNAs: 490 homologous to human and 27 novel miRNAs. HCHF diet elicited expression of more miRNAs compared to baseline (chow) diet for both low and high LDL-C baboons. Seventeen miRNAs exhibited significant differential expression in response to HCHF diet in high LDL-C baboons compared to nine miRNAs in low LDL-C baboons. Putative miRNA targets were identified with TargetScan/Base tools. miRNAs significantly targeted more genes in high LDL-C baboons compared to low LDL-C responders. Further, we identified miRNA isomers and other non-coding RNAs that were differentially expressed in response to the challenge diet.Our discovery of differentially expressed baboon miRNAs and their targets is a fundamental step in understanding the role of non-coding RNAs in the modulation of dsylipidemia.

2019-03-20 | GSE114722 | GEO

Differential microRNA response to a high-cholesterol, high-fat diet in livers of low and high LDL-C baboons

Project description:Dysregulation of microRNAs (miRNAs) expression has been implicated in molecular genetics events leading to the progression and development of atherosclerosis. We hypothesized that miRNA expression profiles differ between baboons with low and high serum low-density lipoprotein cholesterol (LDL-C) concentrations in response to diet, and that a subset of these miRNAs regulate genes relevant to dyslipidemia and risk of atherosclerosis.

2012-07-14 | GSE37249 | GEO

Transcription profiling of livers of C57BL/6 mice and LDL receptor deficient mice fed on either low fat or high fat diet to study liver gene expression associated with diet.

Project description:Examination of gene expression profiles from liver of C57BL/6 mice and LDL receptor deficient mice fed on either a low fat diet or a high fat Western-style diet for 12 weeks. Three replicates of each condition analyzed. Keywords = LDL receptor deficiency, high fat diet, atherosclerosis, liver

2007-11-01 | E-GEOD-363 | biostudies-arrayexpress

Effects of high cholesterol diet on intimal transcriptome [Intima_mRNA]

Project description:Purpose: To investigate the effects of high cholesterol diet on the intimal transcriptome related to atherosclerosis. Methods: 3-week-old LDLR-/- male mice were fed a high cholesterol or low cholesterol diet for 9 weeks. Intimal RNA was extracted by injecting Trizol into the aorta and collecting the flow through for further processing. Results: Mice fed a high cholesterol revealed upregulation in atherosclerosis and immune/inflammatory related genes.

2023-02-08 | GSE213303 | GEO

Effects of paternal high cholesterol diet on F1 generation intimal transcriptome

Project description:Purpose: To investigate the effects of paternal high cholesterol diet on the F1 intimal transcriptome related to atherosclerosis. Methods:Three-week-old male LDL Receptor-deficient (LDLR-/-) male mice were fed a low-cholesterol diet (LCD) or high-cholesterol diet (HCD) for 8 weeks and then mated with age-matched control LDLR-/- female mice to generate F1 offspring. F1 LDLR-/- mice were fed a LCD for 16 weeks. Intimal RNA was extracted by injecting Trizol into the aorta and collecting the flow through for further processing. Results: . Total RNA isolated from the F1 intima were then subjected for RNA-sequencing analysis and results show that paternal hypercholesterolemia led to upregulation of 147 genes in the intimal of F1 female mice, many of which are involved in immune and inflammatory pathways.

2024-10-08 | GSE251711 | GEO

Atlas of miRNome variations in different dyslipidemic conditions: a study in C57Bl/6, Ldlr-KO, and Pcsk9-KO mice.

Project description:In this study, mice with different genotypes and fed diets with different lipid content were enrolled, aiming to set up an atlas of miRNA expression levels in different organs with a relevant role in lipid/lipoprotein metabolism. Specifically, three genotypes were investigated: C57Bl/6 mice as controls, together with mice knock-out (KO) for LDLr (low-density lipoprotein receptor) and for PCSK9 (proprotein convertase subtilisin/kexin type 9). LDLr and PCSK9 are both involved in LDL turnover, the former mediating LDL clearance [PMID: 19299327], the latter causing the degradation of the LDLr protein [PMID: 17080197]. As a result, LDLrKO mice, because of their impaired LDL catabolism, are hypercholesterolemic and prone to atherosclerosis development, particularly when fed high-fat, cholesterol-containing diets [PMID: 8349823; PMID: 8182121]. On the contrary, PCSK9KO mice, characterized by an accelerated LDL catabolism, are hypocholesterolemic and atherosclerosis resistant [PMID: 15805190]. miRNA expression was investigated in liver, intestine, aorta, white adipose tissue and brain of mice on both standard and Western diet.

2023-09-06 | GSE227578 | GEO

Diet induced changes in mouse liver

2003-04-05 | GSE363 | GEO

Novel mirnas participate in Atherosclerosis through inflammation and apoptosis pathways (Mouse miRNA)

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.

2020-09-22 | GSE137582 | GEO

Novel mirnas participate in Atherosclerosis through inflammation and apoptosis pathways (Mouse mRNA)

2020-09-22 | GSE137581 | GEO

Novel mirnas participate in Atherosclerosis through inflammation and apoptosis pathways (HAEC miRNA)

2020-09-22 | GSE137580 | GEO