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GSE42192
Caenorhabditis elegans
18 Downloadable Samples
Affymetrix C. elegans Genome Array (celegans)
Description
Numerous studies have shown that resistance to oxidative stress is crucial to stay healthy and to reduce the adverse effects of aging. Accordingly, nutritional interventions using antioxidant food-grade compounds or food products are currently an interesting option to help improve health and quality of life in the elderly. Live lactic acid bacteria (LAB) administered in food, such as probiotics, may be good antioxidant candidates. Nevertheless, information about LAB-induced oxidative stress protection is scarce. To identify and characterize new potential antioxidant probiotic strains, we have developed a new functional screening method using the nematode Caenorhabditis elegans as host. C. elegans were fed on different LAB strains (78 in total) and nematode viability was assessed after oxidative stress (3mM and 5mM H2O2). One strain, identified as Lactobacillus rhamnosus CNCM I-3690, protected worms by increasing their viability by 30% and, also, increased average worm lifespan by 20%. We performed a transcriptomic analysis of C. elegans fed with this strain and showed that increased lifespan is correlated with differential expression of the DAF-16/insulin-like pathway, which is highly conserved in humans.
Publication Title
Anti-inflammatory Lactobacillus rhamnosus CNCM I-3690 strain protects against oxidative stress and increases lifespan in Caenorhabditis elegans.
Sample Metadata Fields
Time
View Samples- Mus musculus
- 6 Downloadable Samples
- Illumina MouseWG-6 v2.0 expression beadchip
Description
Chronic loss of Lasp1 alters the expression of other genes associated with cell motility/attachment, and/or other cellular functions. Results provide new information showing that loss of Lasp1 leads to up- and down-regulation of genes involved in cell motility/attachment/growth.
Publication Title
Lasp1 gene disruption is linked to enhanced cell migration and tumor formation.
Sample Metadata Fields
No sample metadata fields
View Samples- Arabidopsis thaliana
- 12 Downloadable Samples
- Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
We performed a microarray experiment to assess the global changes in transcription occurring in leaves and roots of the vitamin B6 deficient pdx1.3 knockout mutant in comparison to WT. Vitamin B6 (pyridoxal 5-phosphate) is an essential cofactor of many metabolic enzymes. Plants biosynthesize the vitamin de novo employing two enzymes, pyridoxine synthase1 (PDX1) and PDX2. In Arabidopsis (Arabidopsis thaliana), there are two catalytically active paralogs of PDX1 (PDX1.1 and PDX1.3) producing the vitamin at comparable rates. Since single mutants are viable but the pdx1.1 pdx1.3 double mutant is lethal, the corresponding enzymes seem redundant.
Publication Title
Consequences of a deficit in vitamin B6 biosynthesis de novo for hormone homeostasis and root development in Arabidopsis.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 8 Downloadable Samples
Illumina HiSeq 2500
Description
EBF1 is essential for B cell specification and commitment. To explore the dynamics of EBF1 initiated B cell programming, we performed EBF1 ChIP-seq, ATAC-seq, bisulfite-seq, RNA-seq and several histone ChIP-seq analyses at different stages of the transition from Ebf1-/- pre-pro-B to pro-B triggered by EBF1 restoration. We also performed Pax5 ChIP-seq in Ebf1-/- pre-pro-B cell and EBF1-restored pro-B cell to study the pioneering function of EBF1 that allows other transcription factors to access certain chromatin sites. Overall design: Time series RNA-Seq analysis during the differentiation from Ebf1-deficient pre-pro-B cell to EBF1-restored pro-B cell.
Publication Title
Dynamic EBF1 occupancy directs sequential epigenetic and transcriptional events in B-cell programming.
Sample Metadata Fields
Subject
View Samples- Mus musculus
- 5 Downloadable Samples
- Affymetrix Mouse Genome 430A 2.0 Array (mouse430a2)
Description
Gene expression profiles in Ba/F3 cells expressing ETV6-PDGFRB, FIP1L1-PDGFRA or a control vector, treated or not with imatinib (Glivec)
Publication Title
The expression of the tumour suppressor HBP1 is down-regulated by growth factors via the PI3K/PKB/FOXO pathway.
Sample Metadata Fields
Specimen part, Cell line, Treatment
View Samples- Homo sapiens
- 18 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Glucose intolerance and diabetes mellitus are classical parts of endogenous Cushings syndrome (CS), and insulin resistance is a feature of cortisol excess. CS patients display characteristics including hyperglycemia, abdominal obesity, reduced high-density lipoprotein cholesterol levels and elevated triglycerides, and arterial hypertension. Hypercortisolism is a well known cause of bone loss, and patients with CS frequently display low bone mass and fragility fractures. Cortisol excess inhibits bone formation, increases bone resorption, impairs calcium absorption from the gut, and affects the secretion of several hormones, cytokines, and growth factors with potential influence on bone metabolism. Bone biopsies from nine CS patients, before and mean 3 months after surgery, were screened for expressional candidate genes using Affymetrix human Gene Plus 2.0 Arrays. Analyses were performed to identify genes in glucocorticoid-induced osteoporosis and genes in glucose metabolism and energy homeostasis.
Publication Title
The glucocorticoid-induced leucine zipper gene (GILZ) expression decreases after successful treatment of patients with endogenous Cushing's syndrome and may play a role in glucocorticoid-induced osteoporosis.
Sample Metadata Fields
Sex, Age, Specimen part
View Samples- Bos taurus, Homo sapiens, Rattus norvegicus
- 12 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Angiotensin II (Ang-II) regulates adrenal steroid production and gene transcription through several signaling pathways. Changes in gene transcription occur within minutes after Ang-II stimulation, causing an acute increase in aldosterone production and subsequent increase in the overall capacity to produce aldosterone. Our goal was to compare the Ang-II regulation of early gene expression and confirm the upregulation of selected genes using quantitative real-time RT-PCR (qPCR) across three species: human, bovine, and rat.
Publication Title
Angiotensin-II acute regulation of rapid response genes in human, bovine, and rat adrenocortical cells.
Sample Metadata Fields
No sample metadata fields
View Samples- Arabidopsis thaliana
- 14 Downloadable Samples
- Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
Transcriptional changes upon elicitor treatment over time (0, 30, 60 min) have been analysed with the A.thaliana Landsberg (wt) and fls2-17 (flagellin receptor mutant).
Publication Title
Perception of the bacterial PAMP EF-Tu by the receptor EFR restricts Agrobacterium-mediated transformation.
Sample Metadata Fields
Age, Compound, Time
View Samples- Homo sapiens
- 57 Downloadable Samples
Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2), Illumina HumanMethylation450 BeadChip (HumanMethylation450_15017482)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Subcutaneous adipose tissue gene expression and DNA methylation respond to both short- and long-term weight loss.
Sample Metadata Fields
Sex, Specimen part, Time
View Samples- Homo sapiens
- 57 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
To understand the temporal changes occurring in adipose tissue gene expression during a one-year weightloss intervention, adipose tissue biopsies were collected from 19 healthy obese individuals at three time points.
Publication Title
Subcutaneous adipose tissue gene expression and DNA methylation respond to both short- and long-term weight loss.
Sample Metadata Fields
Sex, Specimen part, Time
View Samples