GEO DataSets

(Submitter supplied) Bariatric surgical techniques are known to cause weight loss and diabetes remission to varying degrees in severly obese patients. However, the mechanisms involved in the restoration of beta-cell function remain to be uncovered. In this study, the leptin-deficient ob/ob mouse was used as a model to investigate the effect of EGA bariactric surgery on pancreatic islet gene expression.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL11202

12 Samples

Download data: TXT

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

Organism:

Mus musculus

Type:

Expression profiling by array; Non-coding RNA profiling by array

Platforms:

GPL21265 GPL11202

27 Samples

Download data: TXT

(Submitter supplied) Ob/ob mice are characterized by a defect in leptin synthesis. In this study, the contribution of leptin deficiency to the deregulation of miRNA expression in ob/ob mice was determined by comparing leptin infused ob/ob mice to saline control.

Organism:

Mus musculus

Type:

Non-coding RNA profiling by array

Platform:

GPL21265

7 Samples

Download data: TXT

(Submitter supplied) Bariatric surgical techniques are known to cause weight loss and diabetes remission to varying degrees in severly obese patients. However, the mechanisms involved in the restoration of beta-cell function remain to be uncovered. In this study, the leptin-deficient ob/ob mouse was used as a model to investigate the effect of EGA bariactric surgery on pancreatic islet miRNA expression.

Organism:

Mus musculus

Type:

Non-coding RNA profiling by array

Platform:

GPL21265

8 Samples

Download data: TXT

(Submitter supplied) Therapeutic PYY/GLP-1 receptor co-agonism in obese-diabetic mice synergistically activates discrete hypothalamic and brainstem neuronal circuitries for weight reduction, increased insulin sensitization, recovery of pancreatic ß-cell function and diabetes remission. GLP1-R agonism (IP118) and PYY-2R agonism (PY115) in combination yield surprising synergistic effects on energy homeostasis in mammals. To better understand the genesis of these effects, RNAseq profiling was performed on key brain regions following an acute dose of IP118+PY115.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19057

59 Samples

Download data: TXT

(Submitter supplied) We carried out genome-wide transcriptome analysis of islets to investigate the gene expression landscape of ob/ob and db/db mouse models at 6 and 16 weeks of age. The purpose of this study is to determine the changes in the islet transcriptomic landscape that mediate the processes of beta cell compensation and failure in ob/ob and db/db mice.

Organism:

Mus musculus

Type:

Expression profiling by array

Platforms:

GPL17400 GPL16570

18 Samples

Download data: CEL

(Submitter supplied) To investigate the effects of bariatric surgery on gene expression profile changes in whole blood in obese subjects with type 2 diabetes in a pilot study setting. Whole blood from eleven obese subjects with type 2 diabetes was collected in PAXgene tubes prior to and 6-12 months after bariatric surgery. Total RNA was isolated, amplified, labeled and hybridized to Illumina gene expression microarrays. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS3881

Platform:

GPL6102

22 Samples

Download data: TXT

Analysis of whole blood from 11 obese subjects with type 2 diabetes (T2D), before and after bariatric surgery. Bariatric surgery resulted in weight loss and improved hyperglycemia for all subjects. Results provide insight into molecular basis for T2D susceptibility and/or therapeutic response.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 gender, 11 individual, 2 protocol sets

Platform:

GPL6102

Series:

GSE19790

22 Samples

Download data

(Submitter supplied) Defective insulin secretion by pancreatic β cells underlies the development of type 2 diabetes (T2D). High fat diet-fed mice are commonly used to study diabetes progression, but studies are usually limited to a single strain, such as C57Bl/6J. Here, we use a systems biology approach to integrate large phenotypic and islet transcriptomic data sets from six commonly used strains fed a high fat or regular chow diet to identify genes associated with glucose intolerance and insulin secretion. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

338 Samples

Download data: TXT

(Submitter supplied) Objective Notch signaling is re-activated in β cells from obese mice, and is causal to β cell dysfunction. Notch activity is determined in part by expression of transmembrane ligand availability in a neighboring cell. We hypothesized that β cell expression of Jagged1 determines the maladaptive Notch response and resultant β cell dysfunction in obese mice. Methods We assessed expression of Notch pathway components in diet-induced obese (DIO) or leptin receptor-deficient (db/db) mice, and performed single cell RNA sequencing (scRNAseq) in islets from patients with and without type 2 diabetes (T2D). more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

6 Samples

Download data: TXT

(Submitter supplied) We report here an improved protocol to reprogram mouse gallbladder cells (GBCs) into pancreatic beta cells. To fully understand the extent of reprogramming, mRNA was extracted from FACS-purified MIP-GFP positive insulin-producing cells (namely rGBC2) for RNA-seq after 10-days of in vitro reprogramming. The global gene expression profile of rGBC2 was compared with that of primary gallbladder cells, GBC reprogrammed with the rGBC1 protocol (Hickey et al., 2013) and mouse pancreatic β cells (Benner et al., 2014). more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

4 Samples

Download data: TXT

(Submitter supplied) We aimed to characterize bariatric surgery-induced transcriptome changes associated with diabetes remission and the predictive role of the baseline transcriptome.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL34684

73 Samples

Download data: CEL

(Submitter supplied) The mechanisms that specify and stabilize cell subtypes remain poorly understood. Here, we identify two major subtypes of pancreatic β cells based on histone mark heterogeneity (βHI and βLO). βHI cells exhibit ∼4-fold higher levels of H3K27me3, distinct chromatin organization and compaction, and a specific transcriptional pattern. βHI and βLO cells also differ in size, morphology, cytosolic and nuclear ultrastructure, epigenomes, cell surface marker expression, and function, and can be FACS separated into CD24+ and CD24− fractions. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

15 Samples

Download data: CSV

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

Organism:

Mus musculus

Type:

Methylation profiling by genome tiling array; Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing

4 related Platforms

80 Samples

Download data: BW, IDAT

(Submitter supplied) The mechanisms that specify and stabilize cell subtypes remain poorly understood. Here, we identify two major subtypes of pancreatic β cells based on histone mark heterogeneity (βHI and βLO). βHI cells exhibit ∼4-fold higher levels of H3K27me3, distinct chromatin organization and compaction, and a specific transcriptional pattern. βHI and βLO cells also differ in size, morphology, cytosolic and nuclear ultrastructure, epigenomes, cell surface marker expression, and function, and can be FACS separated into CD24+ and CD24− fractions. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL24247

16 Samples

Download data: BW

(Submitter supplied) The mechanisms that specify and stabilize cell subtypes remain poorly understood. Here, we identify two major subtypes of pancreatic β cells based on histone mark heterogeneity (βHI and βLO). βHI cells exhibit ∼4-fold higher levels of H3K27me3, distinct chromatin organization and compaction, and a specific transcriptional pattern. βHI and βLO cells also differ in size, morphology, cytosolic and nuclear ultrastructure, epigenomes, cell surface marker expression, and function, and can be FACS separated into CD24+ and CD24− fractions. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

31 Samples

Download data: CSV

(Submitter supplied) The mechanisms that specify and stabilize cell subtypes remain poorly understood. Here, we identify two major subtypes of pancreatic β cells based on histone mark heterogeneity (βHI and βLO). βHI cells exhibit ∼4-fold higher levels of H3K27me3, distinct chromatin organization and compaction, and a specific transcriptional pattern. βHI and βLO cells also differ in size, morphology, cytosolic and nuclear ultrastructure, epigenomes, cell surface marker expression, and function, and can be FACS separated into CD24+ and CD24− fractions. more...

Organism:

Mus musculus

Type:

Methylation profiling by genome tiling array

Platform:

GPL30650

18 Samples

Download data: IDAT, TXT