Control (CRL2429 C11) and A-T (MC3/AT30) iPSC were differentiated according to Erceg et al to generate cerebellar precursors Overall design: Examination of changes in gene expression after a 34 day differentiation protocol in control and A-T iPSC
Human iPSC-Derived Cerebellar Neurons from a Patient with Ataxia-Telangiectasia Reveal Disrupted Gene Regulatory Networks.
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View SamplesDown syndrome (DS) is the most frequent cause of human congenital mental retardation. Cognitive deficits in DS result from perturbations of normal cellular processes both during development and in adult tissues, but the mechanisms underlying DS etiology remain poorly understood. To assess the ability of iPSCs to model DS phenotypes, as a prototypical complex human disease, we generated bona-fide DS and wild-type (WT) non-viral iPSCs by episomal reprogramming. DS iPSCs selectively overexpressed chromosome 21 genes, consistent with gene dosage, which was associated with deregulation of thousands of genes throughout the genome. DS and WT iPSCs were neurally converted at >95% efficiency, and had remarkably similar lineage potency, differentiation kinetics, proliferation and axon extension at early time points. However, at later time points DS cultures showed a two-fold bias towards glial lineages.
Integration-free induced pluripotent stem cells model genetic and neural developmental features of down syndrome etiology.
Sex, Specimen part, Disease, Disease stage, Cell line
View SamplesWe examined transcriptome-wide effects of pertrurbation in KLF10 function (siKLF10) on TGFß-regulated genes and EMT in two different cells lines: A549 and Panc1. Overall design: We performed mRNA sequencing from A549 and Panc1 cells following following TGFß treatment and KLF10 knockdown. The mRNA-Seq includes following conditions: siControl, siKLF10, TGFß, siKLF10+TGFß (A549 and Panc1 cells). mRNA-sequencing was performed in duplicates for A549 and triplicates for Panc1 cells.
Krüppel-like Transcription Factor KLF10 Suppresses TGFβ-Induced Epithelial-to-Mesenchymal Transition via a Negative Feedback Mechanism.
Cell line, Subject
View SamplesProlactin and progesterone act together to regulate mammary alveolar development, and both hormones have been implicated in breast cancer initiation and progression. Here we show that Elf5, a prolactin-induced ETS transcription factor that specifies the mammary secretory cell lineage, is also induced by progestins in breast cancer cells via a direct mechanism. To define the transcriptional response to progestin elicited via Elf5 we made an inducible Elf5 sh-RNA knock down model in T47D breast cancer cells and used it to prevent the progestin-induction of Elf5. Functional analysis of Affymetrix gene expression data using Gene Ontologies and Gene Set Enrichment Analysis showed enhancement of the progestin effects on cell cycle gene expression. Cell proliferation assays showed a more efficacious progestin-induced growth arrest when Elf5 was kept at baseline levels. These results showed that progestin-induction of Elf5 expression tempered the anti-proliferative effects of progestins in T47D cells, providing a further mechanistic link between prolactin and progestin in the regulation of mammary cell phenotype.
The antiproliferative effects of progestins in T47D breast cancer cells are tempered by progestin induction of the ETS transcription factor Elf5.
Disease, Cell line, Treatment
View SamplesThe identification of lymphocyte subsets with non-overlapping effector functions has been pivotal to the development of targeted therapies in immune mediated inflammatory diseases (IMIDs). Yet, despite their key role in disease, it remains unclear whether fibroblast subclasses with non-overlapping functions also exist and are responsible for the wide variety of tissue driven pathologies observed in IMIDs such as inflammation and damage . Here we identify and describe the biology of distinct subsets of fibroblasts responsible for mediating either inflammation or tissue damage in arthritis. We show that deletion of FAPa+ synovial cells suppressed both inflammation and bone erosions in murine models of resolving and persistent arthritis. Single cell transcriptional analysis identified two distinct fibroblast subsets: FAPa+ THY1+ immune effector fibroblasts located in the synovial sub-lining, and FAPa+ THY1- destructive fibroblasts restricted to the synovial lining. When adoptively transferred into the joint, FAPa+ THY1- fibroblasts selectively mediate bone and cartilage damage with little effect on inflammation whereas transfer of FAPa+ THY1+ fibroblasts resulted in a more severe and persistent inflammatory arthritis, with minimal effect on bone and cartilage. Our findings describing anatomically discrete, functionally distinct fibroblast subsets with non-overlapping functions have important implications for cell based therapies aimed at modulating inflammation and tissue damage. Overall design: Serum transfer inflammatory arthritis (STIA) was induced by intravenous injection of 100 µl of arthritogenic KRN serum into naive C57BL/6 mice. From these mice, CD45-ve live Podoplanin (PDPN)+ synovial cells from hind limb joints were sort purified at day 9 (n=3 biological replicates, each comprised of cells from the joints of three animals). Individuals subsets of CD45- PDPN+ cells were further sort puified in the following populations FAP?+ THY1- (n=10 mice); FAP?+ THY+ (n=13 mice); FAP?- THY1+ (n=7 mice) and FAP?- THY1- (n=5 mice). Small bulk RNA sequencing was performed on each of these cell populations with each sample representing a biological replicate comprising of cells isolated from the synovial joints of both hind limbs from a single mouse).
Distinct fibroblast subsets drive inflammation and damage in arthritis.
Specimen part, Cell line, Subject
View SamplesComparisons of global gene-expression profiles revealed a greater distinction between CD4+ Treg cells and CD4+ conventional (Tconv) T cells residing in abdominal (epidydimal) fat versus in more standard locations such as the spleen, thymus and LN.
Lean, but not obese, fat is enriched for a unique population of regulatory T cells that affect metabolic parameters.
Specimen part
View SamplesThe HER2 (ERBB2) and MYC genes are commonly amplified genes in breast cancer, yet little is known about their molecular and clinical interaction. Using a novel chimeric mammary transgenic approach and in vitro models, we demonstrate markedly increased self renewal and tumour propagating capability of cells transformed with Her2 and c-Myc. Co-expression of both oncogenes in cultured cells led to a pronounced activation of a c-Myc transcriptional signature and acquisition of a self renewing phenotype independent of an EMT programme or regulation of cancer stem cell markers. We show that HER2 and c-MYC are frequently co-amplified in a clinical breast cancer cohort and that co-amplification is strongly associated with aggressive clinical behaviour and poor outcome. Lastly, we show that in patients receiving adjuvant chemotherapy (but not targeted anti-HER2 therapy), MYC amplification is associated with a poor outcome in HER2+ breast cancer patients. These findings demonstrate the importance of molecular context in oncogenic transformation and acquisition of a malignant stem-like phenotype and have important diagnostic and therapeutic consequences for the clinical management of HER2+ breast cancer.
c-Myc and Her2 cooperate to drive a stem-like phenotype with poor prognosis in breast cancer.
Sex, Specimen part, Cell line
View SamplesThis SuperSeries is composed of the SubSeries listed below.
ELF5 suppresses estrogen sensitivity and underpins the acquisition of antiestrogen resistance in luminal breast cancer.
Cell line, Treatment, Time
View SamplesMCL cell lines were treated with DMSO or 5uM AFN700 for 20hrs
Pharmacological and genomic profiling identifies NF-κB-targeted treatment strategies for mantle cell lymphoma.
Cell line, Treatment
View SamplesMCL lines (biological replicates) were treated with DMSO or 2.5uM Sotrastaurin for 3hrs
Pharmacological and genomic profiling identifies NF-κB-targeted treatment strategies for mantle cell lymphoma.
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