GEO DataSets

(Submitter supplied) Intrauterine growth restriction (IUGR) increases the risk of developing type 2 diabetes in adulthood. A rat model of IUGR induced by bilateral uterine artery ligation at day 18 of gestation, which reduces the blood supply and critical substrates to the fetus, was used to assess the alterations of genome-wide DNA methylation in IUGR islets. At 2 weeks of age, pancreatic islets were isolated and genomic DNA were extracted for TruSeq-HELP tagging assay. more...

Organism:

Rattus norvegicus

Type:

Methylation profiling by high throughput sequencing

Platform:

GPL22396

12 Samples

Download data: XLSX

(Submitter supplied) Intrauterine growth restriction (IUGR) increases the risk of developing type 2 diabetes in adulthood. A rat model of IUGR induced by bilateral uterine artery ligation at day 18 of gestation, which reduces the blood supply and critical substrates to the fetus, was used to assess the alterations of genome-wide histone modifications in IUGR islets. At 2 and 10 weeks of age, pancreatic islets were isolated and chromatins were extracted for ChIP-Seq study. more...

Organism:

Rattus norvegicus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL14844

61 Samples

Download data: CSV

(Submitter supplied) Intrauterine growth restriction (IUGR) increases susceptibility to age-related diseases including type 2 diabetes (T2DM), and is associated with permanent and progressive changes in gene expression and epigenetic regulation. We studied cytosine methylation throughout the genome in pancreatic islets from a rat model of uteroplacental insufficiency, providing a novel and detailed assessment of the genomic distribution and locus-specific patterns of DNA methylation in normal islets as well as the changes that occur as a consequence of IUGR. more...

Organism:

Rattus norvegicus

Type:

Methylation profiling by genome tiling array

Platform:

GPL8770

8 Samples

Download data: TXT

(Submitter supplied) Intrauterine growth restriction (IUGR) increases the risk of developing type 2 diabetes during adulthood. At day 18 of gestation, we used bilatual uterine artery ligation (BUAL) to restrict nutrient supply to developing rat fetuses to produce IUGR pups. At 2 and 10 weeks of age pancreatic islets were isolated and total RNA extracted using Trizol. Samples with RNA integrity numbers greater than 7 were used to generate libraries

Organism:

Rattus norvegicus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18694

12 Samples

Download data: TXT

(Submitter supplied) One possible mechanism leading to the apparent polymorphic placenta-specific DMRs would be the failure to maintain allelic methylation during gestation. For a temporal comparison, we performed methylation profiling on first trimester chorionic villus sampling (CVS) and compared it with corresponding samples at term. This revealed that DNA methylation level at placenta-specific DMRs is highly stable between the two points. more...

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array; Methylation profiling by array

Platforms:

GPL21145 GPL13534

12 Samples

Download data: CSV

(Submitter supplied) The placenta has a critical role in fetal growth, with many key functions regulated by genomic imprinting. With the recent description of polymorphic placenta-specific imprinting, the molecular mechanisms leading to this curious epigenetic phenomenon are unknown, as is their involvement in pregnancies complications. Profiling ubiquitous and placenta-specific imprinted differentially methylated regions (DMRs) exposed isolated aberrant methylation at ubiquitous DMRs as well as abundant hypomethylation at placenta-specific DMRs. more...

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL13534

22 Samples

Download data: TXT

(Submitter supplied) The study objective was to determine differentially expressed mRNA transcripts in pancreatic islets from fetal sheep with placental insufficiency-induced intrauterine growth restricted.

Organism:

Ovis aries

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19778

8 Samples

Download data: DIFF, TXT

(Submitter supplied) This experiment used ChIP-seq technology to create a genome-wide profile of histone marks in normal human pancreatic islets. In the current work we analyzed two histone marks associated with gene expression (H3K4me3, H3K4me1) and marks associated with gene repression (H3K27me3). Each mark was anayzed using samples obtained from four donors (n=4). Chromatin Immunoprecipitations (ChIPs) for histone marks were performed using specific anti-histone antibodies. more...

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL9052

21 Samples

Download data: BED, TXT

(Submitter supplied) Epigenetic factors regulate tissue-specific expression and X-chromosome inactivation. Previous studies have identified epigenetic differences between sexes in some human tissues. However, it is unclear whether epigenetic modifications contribute to sex-specific differences in insulin secretion and metabolism. In this study, we investigated the impact of sex on the genome-wide DNA methylation pattern in human pancreatic islets from 53 males and 34 females, and related the methylome to changes in expression and insulin secretion.

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL13534

87 Samples

Download data: TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing; Methylation profiling by high throughput sequencing

Platforms:

GPL11154 GPL10999

111 Samples

Download data: BED

(Submitter supplied) Chronic lymphocytic leukemia (CLL) is a biologically and clinically heterogeneous disease. The somatic hypermutation status of the immunoglobulin heavy chain variable (IGHV) genes has been identified as one of the most robust prognostic markers in CLL. Patients with unmutated IGHV status (U-CLL) typically experience an inferior outcome compared to those whose clones express mutated IGHV genes (M-CLL). more...

Organism:

Homo sapiens

Type:

Methylation profiling by high throughput sequencing

Platform:

GPL11154

42 Samples

Download data: BED

(Submitter supplied) Chronic lymphocytic leukemia (CLL) is a biologically and clinically heterogeneous disease. The somatic hypermutation status of the immunoglobulin heavy chain variable (IGHV) genes has been identified as one of the most robust prognostic markers in CLL. Patients with unmutated IGHV status (U-CLL) typically experience an inferior outcome compared to those whose clones express mutated IGHV genes (M-CLL). more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

52 Samples

Download data: TXT

(Submitter supplied) DNA methylation profiling of whole blood using Illumina's Infinium HumanMethylation27 Beadchip array. The dataset encompasses profiles of 12 non-diabetic control blood donors and 12 type-2 diabetic (T2D) individuals.

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL8490

24 Samples

Download data: TXT

(Submitter supplied) Little is known about the contribution of the epigenome to the pathophysiology of type 2 diabetes (T2D). Here we have used genome-wide DNA methylation profiling to obtain the first comprehensive DNA methylation data set for human T2D pancreatic islets. Therefore, we analyzed the methylation profile of 27,578 CpG sites affiliated to more than 14,000 genes in 16 samples of pancreatic islets, 11 normal and 5 type 2-diabetic. more...

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL8490

16 Samples

Download data

(Submitter supplied) The study objective was to determine differentially expressed mRNA transcripts in pancreatic islets from fetal sheep exposed to persistent elevations in stress hormone norepinephrine to isolate effects of chronic adrenergic signaling on fetal islets. Ultimately, these data can be compared to islets from fetuses with placental insufficiency-induced intrauterine growth restriction, where there is known increases in norepinephrine.

Organism:

Ovis aries

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19778

8 Samples

Download data: DIFF, TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens

Type:

Expression profiling by array; Methylation profiling by genome tiling array

Platforms:

GPL13534 GPL10558

48 Samples

Download data

(Submitter supplied) DNA methylation has an impact on regulation of gene expression, however the relation between the two is complex. By performing an integrative analysis of the methylome and transcriptome of the four main circulating immune cell-subsets from healthy females, namely B cells, monocytes, CD4 and CD8 T cells, the relation between the two was characterized. In addition, in light of the known sex bias in the prevalence of several immune-mediated diseases, the female datasets were compared with similar public available male datasets. more...

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL13534

24 Samples

Download data: TXT

(Submitter supplied) DNA methylation has an impact on regulation of gene expression, however the relation between the two is complex. By performing an integrative analysis of the methylome and transcriptome of the four main circulating immune cell-subsets from healthy females, namely B cells, monocytes, CD4 and CD8 T cells, the relation between the two was characterized. In addition, in light of the known sex bias in the prevalence of several immune-mediated diseases, the female datasets were compared with similar public available male datasets. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

24 Samples

Download data: TXT

(Submitter supplied) All genome expression changes investigated on pools of growth restricted rats (at term) compared to control rats. The protocol of growth restriction (length, duration) has been extensively described in Buffat et al (Journal of Pathology 2007a and Endocrinology, 2007b)

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Platform:

GPL11266

20 Samples

Download data: TXT

(Submitter supplied) Fetal growth in utero is affected by both inherent genetic programming in combination with environmental factors, such as maternal health and nutrition. Epidemiologic data in growth-altered fetuses, either growth-restricted (IUGR) or large for gestational age (LGA), demonstrate compelling evidence that these fetuses are at increased risk for cardiovascular and metabolic disease in adulthood. In this study, we used RRBS to examine genome wide DNA methylation variation in placental samples from offspring born IUGR, LGA, and appropriate for gestational age (AGA). more...

Organism:

Homo sapiens

Type:

Methylation profiling by high throughput sequencing

Platform:

GPL11154

17 Samples

Download data: CGMAP