GEO DataSets

Analysis of male donor islets transplanted into streptozotocin-induced diabetic females then removed at pregnancy day 12.5. During pregnancy, the mother’s insulin demand increases to sustain fetal growth. Results provide insight into the molecular response of male beta cells during pregnancy.

Organism:

Mus musculus

Type:

Expression profiling by array, transformed count, 2 gender, 4 protocol, 2 tissue sets

Platform:

GPL6246

Series:

GSE59143

20 Samples

Download data: CEL

(Submitter supplied) ABSTRACT:Pregnancy requires a higher functional beta cell mass and this is associated with profound changes in the gene expression profile of pancreatic islets. Taking Tph1 as a sensitive marker for pregnancy-related islet mRNA expression in female mice, we previously identified prolactin receptors and placental lactogen as key signalling molecules. Since beta cells from male mice also express prolactin receptors, the question arose whether male and female islets have the same phenotypic resilience at the mRNA level during pregnancy. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Dataset:

GDS5618

Platform:

GPL6246

20 Samples

Download data: CEL

(Submitter supplied) ABSTRACT:Pregnancy requires a higher functional beta cell mass and this is associated with profound changes in the gene expression profile of pancreatic islets. Taking Tph1 as a sensitive marker for pregnancy-related islet mRNA expression in female mice, we previously identified prolactin receptors and placental lactogen as key signalling molecules. Since beta cells from male mice also express prolactin receptors, the question arose whether male and female islets have the same phenotypic resilience at the mRNA level during pregnancy. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6246

12 Samples

Download data: CEL

(Submitter supplied) During pregnancy, pancreatic islets undergo structural and functional changes that lead to enhance insulin release in response to increased insulin demand, which is rapidly reversed at parturition. One of the most important changes is expansion of pancreatic β-cell mass mainly by increased proliferation of β cells. We used microarrays to detail the global programme of gene expression and identified distinct up- or down-regulated genes during pregnancy.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

6 Samples

Download data: CEL

(Submitter supplied) During pregnancy, the energy requirements of the fetus impose changes in maternal metabolism. Increasing insulin resistance in the mother maintains nutrient flow to the growing fetus, while prolactin and placental lactogen counterbalance this resistance and prevent maternal hyperglycemia by driving expansion of the maternal population of insulin-producing beta-cells. However, the exact mechanisms by which the lactogenic hormones drive beta-cell expansion remain uncertain. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL9185

6 Samples

Download data: TXT

(Submitter supplied) Pancreatic islets adapt to insulin resistance of pregnancy by up regulating beta-cell proliferation and increase insulin secretion. Previously, we found that prolactin receptor (Prlr) signaling is important for this process, as heterozygous prolactin receptor-null (Prlr+/-) mice are glucose intolerant, had a lower number of beta cells and lower serum insulin levels than wild type mice during pregnancy. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21626

7 Samples

Download data: TXT

(Submitter supplied) To identify nodal transcriptional regulators and effector of PRLR signaling gene targets and networks within beta-cells during pregnancy, we compared the transcriptional signatures of islets from βPRLRKO mice relative to those of littermate controls. Gene expression was assessed using Affymetrix GeneChip® Mouse Gene 2.0 ST Array. Target genes were technically validated using real-time quantitative PCR.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL16570

6 Samples

Download data: CEL

(Submitter supplied) Pregnancy is associated with increased β-cell proliferation driven by prolactin. Long noncoding RNAs (lncRNA) are the most abundant RNA species in the mammalian genome, yet, their functional importance is mainly elusive. This study tests the hypothesis that lncRNAs regulate β-cell proliferation in response to prolactin in the context of β-cell mass compensation in pregnancy.

Organism:

Mus musculus; Mus

Type:

Expression profiling by array

Platform:

GPL20668

6 Samples

Download data: TXT