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GSE7491
Rattus norvegicus
9 Downloadable Samples
Affymetrix Rat Genome 230 2.0 Array (rat2302)
Description
Lung alveolarization is a complex process that involves interactions between several cell types and leads to considerable increase in gas-exchange surface area. The step designated secondary septation includes elastogenesis from interstitial fibroblasts.
Publication Title
Gene expression profiling in lung fibroblasts reveals new players in alveolarization.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 21 Downloadable Samples
- Illumina HumanHT-12 V4.0 expression beadchip
Description
Molecular mechanisms that are responsible for the development of human skin epithelial cells are not completely understood so far. As a consequence, the efficiency to establish a pure skin epithelial cell population from human induced pluripotent stem cells (hiPSC) remains poor. Using an approach including RNA interference and high-throughput imaging of early epithelial cells, we could identify candidate kinases which are involved in skin epithelial differentiation. Among them, we found HIPK4 to be an important inhibitor of this process. Indeed, its silencing increased the amount of generated skin epithelial precursors, increased the amount of generated keratinocytes and improved growth and differentiation of organotypic cultures, allowing for the formation of a denser basal layer and stratification with the expression of several keratins. Our data bring substantial input in the regulation of human skin epithelial differentiation and for improving differentiation protocols from pluripotent stem cells.
Publication Title
An RNAi Screen Reveals an Essential Role for HIPK4 in Human Skin Epithelial Differentiation from iPSCs.
Sample Metadata Fields
Specimen part, Time
View Samples- Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
We analyzed the role of the histone lysine methyltransferase Set7/9 in the differentiation of human embryonic stem (ES) cells. Human ES cell lines expressing a control short hairpin and a short hairpin against Set7/9 were established and the genome wide expression profile was compared between both cell lines at different days during differentiation. Analysis of both profiles indicates that in the absence of Set7/9 there is a delay in the silencing of self-renewal factors as well as in the induction of differentiation markers. These results indicate that Set7/9 plays an active role in the differentiation of human ES cells.
Publication Title
SETD7 Regulates the Differentiation of Human Embryonic Stem Cells.
Sample Metadata Fields
Specimen part, Cell line
View Samples- Homo sapiens
- 26 Downloadable Samples
NextSeq 500
Description
Three different progenitor cell subsets in subcutaneous and visceral adipose tissues derived from 5 obese patients were subjected to AmpliSeq transcriptome profiling. Transcriptomic profiles were analyzed to compare progenitor cell subsets and the impact of subcutaneous and visceral adipose tissue location. Overall design: Transcriptomic profiling of 3 different progenitor cell types in subcutaneous and visceral adipose tissues derived from 5 obese patients (3X2X5=30 samples).
Publication Title
Lobular architecture of human adipose tissue defines the niche and fate of progenitor cells.
Sample Metadata Fields
Subject
View Samples- Homo sapiens
- 16 Downloadable Samples
- Affymetrix Human Gene 2.0 ST Array (hugene20st)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Chronic mucocutaneous candidiasis and connective tissue disorder in humans with impaired JNK1-dependent responses to IL-17A/F and TGF-β.
Sample Metadata Fields
Specimen part, Disease, Disease stage, Treatment, Time
View Samples- Rattus norvegicus
- 48 Downloadable Samples
- Affymetrix Rat Expression 230A Array (rae230a)
Description
The size and scope of microarray experiments continue to increase. However, datasets generated on different platforms or at different centres contain biases. Improved techniques are needed to remove platform- and batch-specific biases. One experimental control is the replicate hybridization of a subset of samples at each site or on each platform to learn the relationship between the two platforms. To date, no algorithm exists to specifically use this type of control. LTR is a linear-modelling-based algorithm that learns the relationship between different microarray batches from replicate hybridizations. LTR was tested on a new benchmark dataset of 20 samples hybridized to different Affymetrix microarray platforms. Before LTR, the two platforms were significantly different; application of LTR removed this bias. LTR was tested with six separate data pre-processing algorithms, and its effectiveness was independent of the pre-processing algorithm. Sample-size experiments indicate that just three replicate hybridizations can significantly reduce bias. An R library implementing LTR is available.
Publication Title
LTR: Linear Cross-Platform Integration of Microarray Data.
Sample Metadata Fields
Sex
View Samples- Homo sapiens
- 10 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Hutchinson-Gilford progeria syndrome (HGPS) is a rare and fatal human premature aging disease1-5, characterized by premature atherosclerosis and degeneration of vascular smooth muscle cells (SMCs)6-8. HGPS is caused by a single-point mutation in the LMNA gene, resulting in the generation of progerin, a truncated mutant of lamin A. Accumulation of progerin leads to various aging-associated nuclear defects including disorganization of nuclear lamina and loss of heterochromatin9-12. Here, we report the generation of induced pluripotent stem cells (iPSCs) from fibroblasts obtained from patients with HGPS. HGPS-iPSCs show absence of progerin, and more importantly, lack the nuclear envelope and epigenetic alterations normally associated with premature aging. Upon differentiation of HGPS-iPSCs, progerin and its associated aging consequences are restored. In particular, directed differentiation of HGPS-iPSCs to SMCs leads to the appearance of premature senescent SMC phenotypes associated with vascular aging. Additionally, our studies identify DNA-dependent protein kinase catalytic subunit (DNAPKcs) as a component of the progerin-containing protein complex. The absence of nuclear DNAPKcs correlates with premature as well as physiological aging. Since progerin also accumulates during physiological aging6,12,13, our results provide an in vitro iPSC-based model with an acceleration progerin accumulation to study the pathogenesis of human premature and physiological vascular aging.
Publication Title
Recapitulation of premature ageing with iPSCs from Hutchinson-Gilford progeria syndrome.
Sample Metadata Fields
Cell line
View Samples- Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
To identify the CD4+ T cell cytokines responsible for the proliferation of the Lin-IEL lines CD4+ T cell clone L10, which recognises DQ2-glia-1, one of the immunodominant T cell epitopes in celiac disease, was stimulated for 3 hours in IMDM with plate-bound CD3/CD28-specific (2.5 g/ml each) or control antibodies coated onto 6-well non-tissue culture treated plates. Three independent biological replicates were performed, each time including 6 million Ficoll-purified live cells per condition. RNA was purified from these cells using the RNAeasy mini kit (Qiagen, Venlo, the Netherlands). cDNA was amplified using the Applause WT-Amp system (NuGEN technologies, Bemmel, the Netherlands) and biotin-labelled with the Encore Biotin Module (NuGEN). Human Gene 1.0 ST arrays (Affymetrix, High Wycombe, UK) were employed to quantify global gene expression.
Publication Title
CD4 T-cell cytokines synergize to induce proliferation of malignant and nonmalignant innate intraepithelial lymphocytes.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 12 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
We used microarrays to compared gene expression profilings in various tumors of the kidney.
Publication Title
Balanced Translocations Disrupting SMARCB1 Are Hallmark Recurrent Genetic Alterations in Renal Medullary Carcinomas.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 24 Downloadable Samples
- Illumina MouseWG-6 v2.0 expression beadchip
Description
Despite even large phenotypic differences among vertebrate groups, dentitions and jaws fit and function together, yet the genetic processes that orchestrate cranial and dental morphogenesis remain poorly understood. In the p63-/- mouse mutant, teeth but not jaws fail to form. This edentate mouse is a model with which to tease out genes important for odontogenesis but not jaw morphogenesis, and which may thus allow dentitions to change during development and evolution without necessarily affecting the jaw skeleton. With the working hypothesis that tooth and jaw development are autonomously controlled by discreet gene regulatory networks, we probed for genes crucial for tooth development only. Using gene expression microarray assays validated by quantitative reverse-transcription PCR, we contrasted expression in mandibular prominences at embryonic days (E) 10-13 among mice with normal lower jaw development and either normal (p63+/-, p63+/+) or arrested (p63-/-) tooth development. We predicted that expression of a suite of genes specific to odontogenesis would differ in the edentate mice. The p63-/- mice showed significantly different expression (fold change 1.5, -1.5; p0.05) of several genes, some of which are already reported to help regulate odontogenesis (e.g., p63, Osr2, Cldn3/4) and/or to be targets of p63 (e.g., Jag1/2, Fgfr2), others of which have no previously reported roles in odontogenesis or the p63 pathway (e.g, Fermt1, Cbln1, Pltp, Cxcl14, Krt8, and additional keratin and claudin family members). As expected, from E10-E13 few genes known to regulate mandible morphogenesis differed in expression between mouse strains. Thus this study links for the first time several genes to odontogenesis and/or the p63 signaling network. We propose that these genes act in a novel odontogenic network that is exclusive of lower jaw morphogenesis, and posit that this network evolved in oral, not pharyngeal, teeth.
Publication Title
Detangling the evolutionary developmental integration of dentate jaws: evidence that a p63 gene network regulates odontogenesis exclusive of mandible morphogenesis.
Sample Metadata Fields
Specimen part
View Samples