GEO DataSets

(Submitter supplied) Pancreatic beta cell senescence occurs during the development of Type 1 Diabetes. To model the transcriptional responses of islet cells to DNA damage, we previously developed a human islet culture model in which the DNA damage response and senescence can be induced via double strand-breaks with the agent bleomycin. Here, we report the transcriptome-wide changes in human pancreatic islet cells following bleomycin exposure.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

12 Samples

Download data: XLSX

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

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

16 Samples

Download data

(Submitter supplied) Responsiveness of EndoC-BH5 cells to cytokines was examined by RNA-seq of cells treated with IFNγ and IL1β for 24 h. The treatment resulted in profound changes in their transcriptome and upregulation of genes involved in the inflammatory pathwayand antigen processing and presentation, similar to previous studies on EndoC-BH1 cells and adult human islets. EndoC-BH5 cells hence represent a powerful tool to investigate the dialogue between beta cells and the immune system.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

6 Samples

Download data: TXT

(Submitter supplied) We have developped a novel human pancreatic beta cell line: EndoC-βH5. EndoC-βH5 cells are ready-to-use and storable cells with physiological insulin secretion. EndoC-βH5 cells were generated by integrative gene transfer of immortalizing transgenes hTERT and SV40 large T along with Herpes Simplex Virus-1 thymidine kinase into human fetal pancreas. Immortalizing transgenes were removed after amplification using CRE activation and remaining non-excized cells eliminated using ganciclovir. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

10 Samples

Download data: TXT

(Submitter supplied) scRNA-seq of Islets isolated from 8, 14 and 16 week NOD mice

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

9 Samples

Download data: MTX, TSV

(Submitter supplied) The aging of pancreatic beta-cells may undermine their ability to compensate for insulin resistance, leading to the development of type 2 diabetes (T2D). Aging beta-cells acquire markers of cellular senescence and develop a senescence-associated secretory phenotype (SASP) that can lead to senescence and dysfunction of neighboring cells through paracrine actions, contributing to beta-cell failure. Herein, we defined the beta-cell SASP signature based on unbiased proteomic analysis of conditioned media of cells obtained from human senescent beta-cells. more...

Organism:

Homo sapiens

Type:

Protein profiling by protein array

Platform:

GPL28516

27 Samples

Download data: DATA

(Submitter supplied) To define the senescence-associated secretory phenotype (SASP) of beta-cells, we used conditioned media (CM) generated from bleomycin-treated MIN6 cells and from senescent (beta-Gal-positive) primary beta-cells. In order to culture senescent beta-cells, we isolated islet, FACS-sorted them into beta-Gal-positive and negative populations, excluding immune cells through negative selection of CD45-positive and CD11beta-positive cells. more...

Organism:

Mus musculus; Homo sapiens

Type:

Protein profiling by protein array

Platform:

GPL28516

28 Samples

Download data: TXT

(Submitter supplied) Type 2 Diabetes (T2D) patients have higher proportions of senescent beta-cells than their non-diabetic counterparts (Aguayo-Mazzucato et al., 2019). Senescent beta-cells may propagate dysfunction in neighboring cells through the paracrine effects of the senescence-associated secretory phenotype (SASP). To address the heterogeneity in beta-cell SASP expression and its role in T2D, we measured expression levels of beta-cell SASP signature genes in a mouse model of acute insulin resistance using the insulin receptor antagonist, S961. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19057

3 Samples

Download data: CSV

(Submitter supplied) We previously reported that increased expression of IGF1R in mouse and human beta-cells is a marker of older beta-cells; however, its contribution to age-related dysfunction and cellular senescence remains to be determined. In this study, we explored the direct role of IGF1R in beta-cell function and senescence using inducible beta-cell specific IGF1R knockdown (betaIgf1rKD) mice. Adult betaIgf1rKD mice showed improved glucose clearance and glucose-induced insulin secretion, accompanied by decreased p21Cip1 protein expression in beta-cells. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

8 Samples

Download data: CSV

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

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array; Expression profiling by high throughput sequencing

Platforms:

GPL13534 GPL11154

12 Samples

Download data: TXT

(Submitter supplied) Type 1 diabetes (T1D) is caused by autoimmune destruction of pancreatic β cells. Mounting evidence supports a central role for β-cell alterations in triggering the activation of self-reactive T-cells in T1D. However, the early deleterious events that occur in β cells, underpinning islet autoimmunity are not known. We hypothesized that epigenetic modifications induced in β cells by inflammatory mediators play a key role in initiating the autoimmune response. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

6 Samples

Download data: TXT

(Submitter supplied) Type 1 diabetes (T1D) is caused by autoimmune destruction of pancreatic β cells. Mounting evidence supports a central role for β-cell alterations in triggering the activation of self-reactive T-cells in T1D. However, the early deleterious events that occur in β cells, underpinning islet autoimmunity are not known. We hypothesized that epigenetic modifications induced in β cells by inflammatory mediators play a key role in initiating the autoimmune response. more...

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL13534

6 Samples

Download data: TXT

(Submitter supplied) EndoC-βH5 is a newly established human beta-cell model which may be superior to previous models of native human beta cells. Exposure of beta cells to proinflammatory cytokines is a widely used in vitro model of immune-mediated beta-cell failure in type 1 diabetes and we therefore performed an in-depth characterisation of the effects of cytokines on EndoC-βH5 cells. Global gene expression was characterised by stranded RNA sequencing.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL28038

8 Samples

Download data: TXT

(Submitter supplied) Islet β-cell dysfunction and aggressive macrophage activity are early features in the pathogenesis of type 1 diabetes (T1D). 12/15-lipoxygenase (12/15-LOX) is induced in β cells and macrophages during T1D and produces pro-inflammatory lipids and lipid peroxides that exacerbate β-cell dysfunction and macrophage activity. Inhibition of 12/15-LOX provides a potential therapeutic approach to prevent glycemic deterioration in T1D. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21103

12 Samples

Download data: CSV

(Submitter supplied) Senescence in pancreatic beta cells plays a major role in beta cell dysfunction which leads to impaired glucose homeostasis and diabetes. Therefore, prevention of beta cell senescence could reduce the risk of diabetes. Treatment of NOD mice, a model of Type 1 autoimmune diabetes (T1D), with Palmitic acid hydroxy stearic acids (PAHSAs), a novel class of endogenous lipids with antidiabetic and anti-inflammatory effects, delays the onset and reduces the incidence of T1D from 82% with vehicle treatment to 35% with PAHSAs. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19057

8 Samples

Download data: CSV

(Submitter supplied) During the progression of type 1 diabetes (T1D), β-cells are exposed to significant stress and therefore require adaptive responses to survive. The adaptive mechanisms that can preserve β-cell function and survival in the face of autoimmunity remain unclear. Here we show that deletion of the unfolded protein response genes, Atf6α or Ire1α, in β-cells of NOD mice prior to insulitis generates a p21-driven early senescence phenotype and altered β-cell secretome that significantly enhances leukemia inhibitory factor-mediated recruitment of M2 macrophages to the islets. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

7 Samples

Download data: XLSX

(Submitter supplied) Type 1 diabetes (T1D) results from autoimmune destruction of β-cells in the pancreas. Protein tyrosine phosphatases (PTPs) are candidate genes for T1D and play a key role in autoimmune disease development and β-cell function. Here, we assessed the global protein and individual PTP profile in the pancreas from diabetic NOD mice treated with anti-CD3 monoclonal antibody and IL-1 receptor antagonist (IL-1RA). more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

18 Samples

Download data: XLS, XLSX

(Submitter supplied) Characterization of mouse pancreatic alpha, beta and delta cells responses to IFNγ

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19057

18 Samples

Download data: RESULTS

(Submitter supplied) Characterization of FACS-sorted PD-L1 high and low mouse pancreatic beta cells after 20h of incubation with low dose of IFNγ.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

11 Samples

Download data: RESULTS

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

Organism:

Homo sapiens; Mus musculus

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL24247 GPL21697

10 Samples

Download data