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GSE68298
Mus musculus
16 Downloadable Samples
Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
In mouse, spermatogonial stem/progenitor cells are the progenitor cell which develop to mature sperms through a series of mitotic and meiotic divisions and differentiation. Gfra1 is an established surface marker for mouse spermatogonial stem/progenitor cells. In this study, we used a transcriptomic approach to investigate the effect of aging on Gfra1-positive and -negative populations of mouse male germ cells.
Publication Title
Age affects gene expression in mouse spermatogonial stem/progenitor cells.
Sample Metadata Fields
Sex, Age
View Samples- Mus musculus
- 23 Downloadable Samples
- Affymetrix Mouse Genome 430A 2.0 Array (mouse430a2)
Description
During malaria infection is observed a robust immune response culminating on release of inflammatory mediators. This exacerbated immune response is involved in malaria symptoms and mortality. There are evidences that this response is mediated by innate immunity where pattern recognition receptors have a key role. We used microarrays to elucidate some pro-inflammatory genes that are differential expressed during P. chabaudi infection, a malarial murine model
Publication Title
Daily Rhythms of TNFα Expression and Food Intake Regulate Synchrony of Plasmodium Stages with the Host Circadian Cycle.
Sample Metadata Fields
Sex, Age, Specimen part
View Samples- Homo sapiens
- 16 Downloadable Samples
Illumina HiSeq 2000
Description
Sandhoff disease, one of the GM2 gangliosidoses, is a lysosomal storage disorder characterized by the absence of b-hexosaminidase A and B activity and the concomitant lysosomal accumulation of its substrate, GM2 ganglioside. It features catastrophic neurodegeneration and death in early childhood. How the lysosomal accumulation of ganglioside might affect the early development of the nervous system is not understood. Recently, cerebral organoids derived from induced pluripotent stem (iPS) cells have illuminated early developmental events altered by disease processes. To develop an early neurodevelopmental model of Sandhoff disease, we first generated iPS cells from the fibroblasts of an infantile Sandhoff disease patient, then corrected one of the mutant HEXB alleles in those iPS cells with CRISPR/Cas9 genome-editing technology, thereby creating isogenic controls. Next, we used the parental Sandhoff disease iPS cells and isogenic HEXB-corrected iPS cell clones to generate cerebral organoids that modeled the first trimester of neurodevelopment. The Sandhoff disease organoids but not the HEXB-corrected organoids accumulated GM2 ganglioside, and exhibited increased size and cellular proliferation compared with the HEXB-corrected organoids. Whole-transcriptome analysis demonstrated that development was impaired in the Sandhoff disease organoids, suggesting that alterations in neuronal differentiation may occur during early development in the GM2 gangliosidoses Overall design: Sandhoff disease and corrected cerebral organoids grown for 8 and 10 weeks were analyzed: four samples at each time point, each consisting of 4–6 pooled organoids, for both Sandhoff and corrected. Whole transcriptome from Sandhoff disease and corrected organoids for both time points were generated by deep sequencing on an Illumina HiSeq 2500.
Publication Title
Cerebral organoids derived from Sandhoff disease-induced pluripotent stem cells exhibit impaired neurodifferentiation.
Sample Metadata Fields
Specimen part, Subject
View Samples- Caenorhabditis elegans
- 4 Downloadable Samples
- Affymetrix C. elegans Genome Array (celegans)
Description
We have discovered rifampicin as a glycation inhibitor, which increases life span in C elegans. In order to understand the mechanism of rifampicin action, microarray analysis was performed to study the changes in gene expression brought about by the drug.
Publication Title
Rifampicin reduces advanced glycation end products and activates DAF-16 to increase lifespan in Caenorhabditis elegans.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 28 Downloadable Samples
- Illumina human-6 v2.0 expression beadchip
Description
Patients with febrile malaria were recruited in order to determine Peripheral Blood Mononuclear Cell (PBMC) gene expression during malaria. Blood was harvested from patients during the acute phase of the illness, and then patients were given a curative regimen of antimalarials. Three to four weeks after treatment, patients returned to the malaria clinic and blood was collected again, in order that each patient could serve as his or her own control. PBMC were isolated at the time of blood collection and forzen in RNA extraction buffer. At the end of the study, each patient was arrayed for ~47,000 transcripts, comparing gene expression at the end of therapy to that at the beginning. The goal was to determine which genes were altered as a result of disease at least 2 fold in a statistically significant manner and to assess if the genes involved could be related to Toll-like receptor signaling pathways. Approximately 60 genes involved in inflammation were confirmed by qPCR.
Publication Title
Malaria primes the innate immune response due to interferon-gamma induced enhancement of toll-like receptor expression and function.
Sample Metadata Fields
Sex, Age
View Samples- Mus musculus
- 34 Downloadable Samples
- Illumina HiSeq 2500
Description
We have demonstrated that allergic airway inflammation (induced by an ovalbumin sensitization and aerosol challenge protocol) decreases lung bacterial burden following lung infection with Klebsiella pneumoniae. The goals of this study are to indentify novel targets that are expressed during allergic airway inflammation in this model that contribute to enhanced lung bacterial immunity. Overall design: We isolated total RNA from the lungs of 4 groups of mice at both 0 hours (pre-infection) and 6 hours post-infection. WT and STAT6KO (BALB/c) mice were intraperitoneally sensitzed with alum or ovalbumin (OVA)-alum on day -18. Alum injected mice were not subsequently exposed to OVA aerosol. OVA-alum injected mice underwent aerosol sensitization on days -4, -3, -2, and -1. On day 0, four groups of mice were harvested (pre-infection). These included WT-ALUM, WT-OVA, STAT6KO-ALUM, and STAT6KO-OVA. On day 0, four groups of mice were infected with 10^4cfu of Klebsiella and then lungs were removed at 6 hours post-infection. These groups included WT-ALUM-KP, WT-OVA-KP, STAT6KO-ALUM-KP, and STAT6KO-OVA-KP. The right lung was removed for RNA isolation. Each group contained between 4 and 5 mice.
Publication Title
Allergic airway inflammation decreases lung bacterial burden following acute Klebsiella pneumoniae infection in a neutrophil- and CCL8-dependent manner.
Sample Metadata Fields
No sample metadata fields
View Samples- Caenorhabditis elegans
- 217 Downloadable Samples
- Illumina HiSeq 2500
Description
A prevalent hypothesis for the cell-to-cell coordination of the phenomena of early development is that a defined mixture of different mRNA species at specific abundances in each cell determines fate and behavior. With this dataset we explore this hypothesis by quantifying the abundance of every mRNA species in every individual cell of the early C. elegans embryo, for which the exact life history and fate is precisely documented. Overall design: Embryos of the 1-, 2-, 4-, 8- and 16-cell stage were dissected into complete sets of single cells, and each cell from each set was sequenced individually using SMARTer technology. 5-9 replicates were generated for each stage. Most cell identities were unknown upon sequencing, but were deduced from by their transcriptomes post hoc.
Publication Title
A Transcriptional Lineage of the Early C. elegans Embryo.
Sample Metadata Fields
Specimen part, Subject
View Samples- Homo sapiens
- 6 Downloadable Samples
- Sentrix Human-6 Expression BeadChip
Description
Expression of the MT1-MMP gene induces a significant upregulation of of oncogenes and tumorignenic genes in 184B5-MT1 cells.
Publication Title
Membrane type-1 matrix metalloproteinase confers aneuploidy and tumorigenicity on mammary epithelial cells.
Sample Metadata Fields
Cell line
View Samples- Mus musculus
- 12 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Metastasis depends on the ability of tumor cells to establish a relationship with the newly seeded host tissue that is conducive to their survival and proliferation. Recent evidence suggests that tumor cells regulate their own dissemination by preparing permissive metastatic niches within host tissues. However, the factors that are implicated in rendering tissues permissive for metastatic tumor growth have yet to be fully elucidated. Breast tumors arising during pregnancy display highly aggressive behaviour and early metastatic proclivity, raising the possibility that pregnancy may constitute a physiological condition of permissiveness for tumor dissemination. We show that during murine gestation, both the rate and degree of metastatic tumor growth are enhanced irrespective of tumor type and that decreased natural killer (NK) cell activity is responsible for the observed increase in experimental metastasis. We identify gene expression changes in pregnant mouse lung and liver that bear striking similarity with reported pre-metastatic niche signatures and several of the up-regulated genes are indicative of myeloid-cell infiltration. We provide evidence, that CD11b+ Gr-1+ myeloid-derived suppressor cells accumulate in pregnant mice and exert an inhibitory effect on NK cell activity, thereby enhancing metastatic tumor growth. MDSC have never been evoked in the context of pregnancy and our observations suggest that they may represent a further shared mechanism of immune suppression occurring during gestation and tumor growth.
Publication Title
Myeloid-derived suppressor cells are implicated in regulating permissiveness for tumor metastasis during mouse gestation.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 12 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
In order to obtain a global picture regarding regulation of p53 in liver cells we used HepG2 hepatoma cells.We created two isogenic sub-cultures of HepG2 cells with altered expression of p53.
Publication Title
Chemotherapeutic agents induce the expression and activity of their clearing enzyme CYP3A4 by activating p53.
Sample Metadata Fields
Specimen part, Cell line
View Samples