DAZAP1 was depleted in culterd HEK 293T cells using shRNA and the resulting poly A RNA were isolated c-DNA library constructed and paired end sequenced on illumina Hi-seq 2000 platform the data was compared to a control shRNA depleted cell Overall design: Gene expression and splicing switches upon DAZAP1 knockdown
The splicing activator DAZAP1 integrates splicing control into MEK/Erk-regulated cell proliferation and migration.
No sample metadata fields
View SamplesNitric oxide (NO) regulated pulmonary vascular function and structure, in part, via its effect on gene expression. We used microarrays to determine the up- and downregulated genes in rat pulmonary artery smooth muscle cells exposed to the NO donor S-nitrosoglutathione (GSNO) for 1, 2, and 4 hours.
Phosphodiesterase 3A expression is modulated by nitric oxide in rat pulmonary artery smooth muscle cells.
Specimen part
View SamplesExpression profiling of Rag2-deficient Ets1++ and Rag2-deficient Ets1-- mature NK cells and WT bone marrow progenitors, WT T cells, and WT Pro B cells
Gene deregulation and chronic activation in natural killer cells deficient in the transcription factor ETS1.
Specimen part
View SamplesCommunity-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) infections are often caused by strains encoding Panton-Valentine leukocidin (PVL). PVL can cause lysis of polymorphonuclear leukocytes (PMNs) and other myeloid cells in vitro, a function considered widely as the primary means by which PVL might contribute to disease. However, at sublytic concentrations PVL can function as a PMN agonist. To better understand this phenomenon, we investigated the ability of PVL to alter human PMN function. PMNs exposed to PVL had enhanced capacity to produce superoxide in response to N-formyl-methionyl-leucyl-phenylalanine (fMLF), but unlike priming by lipopolysaccharide, this response did not require Toll-like receptor signal transduction. On the other hand, there was subcellular redistribution of NADPH oxidase components in PMNs following exposure of these cells to PVL - a finding consistent with priming. Priming of PMNs with other agonists such as IL-8 or GM-CSF altered the ability PVL to cause formation of pores in the plasma membranes of these cells. Microarray analysis revealed significant changes in the human PMN transcriptome following exposure to PVL, including up-regulation of molecules that regulate the inflammatory response. Consistent with the microarray data, mediators of the inflammatory response were released from PMNs after stimulation with PVL. We conclude that exposure of human PMNs to sublytic concentrations of PVL elicits a proinflammatory response that is regulated in part at the level of gene expression. We propose that PVL-mediated priming of PMNs enhances the host innate immune response.
Sublytic concentrations of Staphylococcus aureus Panton-Valentine leukocidin alter human PMN gene expression and enhance bactericidal capacity.
Specimen part
View SamplesPancreatic ductal adenocarcinoma (PDAC) is strikingly resistant to conventional approaches. In this study, we report that the histone deacetylase associated SIN3B protein is required for activated KRAS-induced senescence in vivo using a mouse model of pancreatic cancer.
Senescence-associated SIN3B promotes inflammation and pancreatic cancer progression.
Specimen part
View SamplesRNA-seq was performed on the nucleus accumbens of female (F) interval-specific congenic strain-B (P.NP-ISCS-B) and inbred alcohol preferring (iP) control rat Overall design: Total RNA was isolated from nucleus accumbens (NA) of female alcohol naive interval-specific congenic (ISCS) and control iP rats. Illumina TruSeq RNA Sample Preparation was performed following manufacturer's protocol. Samples were run on an Illumina HiSeq 2000 in triplicate.
Estrogen-Dependent Upregulation of <i>Adcyap1r1</i> Expression in Nucleus Accumbens Is Associated With Genetic Predisposition of Sex-Specific QTL for Alcohol Consumption on Rat Chromosome 4.
Sex, Specimen part, Treatment, Subject
View SamplesThe Hedgehog (Hh) signaling pathway is a developmentally conserved regulator of stem cell function. Several reports suggested that Hh signaling is an important regulator of hematopoietic stem cell (HSC) maintenance and differentiation. Here we test this hypothesis in vivo using both gain- and loss-of-function Hh genetic models. Surprisingly, our studies demonstrate that conditional Smoothened (Smo) deletion or over-activation has no significant effects on adult HSC self-renewal and function. Moreover, they indicate a lack of synergism between the Notch and Hh pathways in HSC function, as RBPJ- and Smo-deficiency do not affect hematopoiesis. In agreement with this notion, detailed genome-wide transcriptome analysis reveals that silencing of Hh signaling does not significantly alter the HSC-specific gene expression signature. Our studies demonstrate that the Hh signaling pathway is dispensable for adult HSC function and suggest that the Hh pathway can be targeted in future clinical trials addressing the effect of Hh inhibition on leukemia-initiating cell maintenance.
Hedgehog signaling is dispensable for adult hematopoietic stem cell function.
Sex
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Three-dimensional culture system identifies a new mode of cetuximab resistance and disease-relevant genes in colorectal cancer.
Specimen part, Cell line
View SamplesIt is increasingly appreciated that properties of cultured epithelial cells differ dramatically in 2D compared to 3D, and the latter more faithfully recapitulates in vivo behavior. By studying a battery of human colorectal cancer (CRC) cell lines in type-1 collagen, we have found that HCA-7 cells form colonies with two distinctive and persistent morphological and functional properties. We observed predominantly single-layered polarized cysts (cystic colonies, CC) and a smaller fraction displaying disorganized solid masses (spiky colonies, SC) that were highly invasive in vivo. Despite overall genomic similarity, CC and SC exhibited distinct and dynamic patterns of gene expression in 3D.
Three-dimensional culture system identifies a new mode of cetuximab resistance and disease-relevant genes in colorectal cancer.
Specimen part, Cell line
View SamplesWe have used deep sequencing to explore the repertoire of both poly(A)+ and poly(A)- RNAs from two standard cell lines, HeLa cells and human embryonic stem cell (hESC) H9 cells. Overall design: Examination of nonpolyadenylated and polyadenylated in 2 cell types.
Genomewide characterization of non-polyadenylated RNAs.
Cell line, Subject
View Samples