Genome-wide mRNA expression profiling was performed in AGS, gastric cancer cell line, upon miR-25 silencing. At 48 hours upon anti-miR-25-3p (miRNA inhibitor) and non-targeting control RNA transfection, the whole transcriptome profiling was performed in triplicates. The miR-25 silencing elevates the diffuse gastric cancer features like expression of COL1A2, expression of COL1A2 co-expressed genes, Epithelial to Mesenchymal Transition (EMT) and angiogenesis associated genes.
Amplified 7q21-22 gene MCM7 and its intronic miR-25 suppress COL1A2 associated genes to sustain intestinal gastric cancer features.
Specimen part, Cell line
View Samplesbulk breast tumor RNA from patient
X chromosomal abnormalities in basal-like human breast cancer.
No sample metadata fields
View SamplesGene expression for 47 human breast tumor cases;
X chromosomal abnormalities in basal-like human breast cancer.
No sample metadata fields
View SamplesSurgical interventions on blood vessels bear a risk for intimal hyperplasia and atherosclerosis as a consequence of injury. A specific feature of intimal hyperplasia is the loss of vascular smooth muscle cell (VSMC) differentiation gene expression. We hypothesized that immediate responses following injury induce vascular remodeling. To differentiate injury due to trauma, reperfusion and pressure changes we analyzed vascular responses to carotid artery bypass grafting in mice compared to transient ligation. As a control, the carotid artery was surgically laid open only. In both, bypass or ligation models, the inflammatory responses were transient, peaking after 6h, whereas the loss of VSMC differentiation gene expression persisted. Extended time kinetics showed that transient carotid artery ligation was sufficient to induce a persistent VSMC phenotype change throughout 28 days. Transient arterial ligation in ApoE knockout mice resulted in atherosclerosis in the transiently ligated vascular segment but not on the not-ligated contralateral side. The VSMC phenotype change could not be prevented by anti-TNF antibodies, Sorafenib, Cytosporone B or N-acetylcysteine treatment. Surgical interventions involving hypoxia/reperfusion are sufficient to induce VSMC phenotype changes and vascular remodeling. In situations of a perturbed lipid metabolism this bears the risk to precipitate atherosclerosis. Overall design: Comparison of mRNA changes between control tissue and bypass grafts perfused for 1, 6 and 24h. Number of replicated per group =4-5
Hypoxia/reperfusion predisposes to atherosclerosis.
Sex, Specimen part, Cell line, Subject
View SamplesCarcinoma associated fibroblasts (CAFs) have recently been implicated in important aspects of epithelial solid tumor biology such as neoplastic progression, tumor growth, angiogenesis, and metastasis. However, neither the source of CAFs nor the differences between CAFs and fibroblasts from non-neoplastic tissue have been well defined. In this study we demonstrate that human bone marrow-derived mesenchymal stem cells (hMSCs) exposed to tumor-conditioned medium (TCM) over a prolonged period of time assume a CAF-like myofibroblastic phenotype. More importantly, these cells exhibit functional properties of CAFs including sustained expression of stromal derived factor 1 (SDF-1) and the ability to promote tumor cell growth both in vitro and in an in vivo co-implantation model and expression of myofibroblast markers including -smooth muscle actin and fibroblast surface protein. hMSCs induced to differentiate to a myofibroblast-like phenotype using 5-azacytidine do not promote tumor cells growth as efficiently as hMSCs cultured in tumor-conditioned medium nor do they demonstrate increased SDF-1 expression. Furthermore, gene expression profiling revealed similarities between TCM exposed hMSCs and carcinoma associated fibroblasts. Taken together these data suggest that hMSCs are a source of carcinoma associated fibroblasts and can be used in the modeling of tumor-stroma interactions. To our knowledge this is the first report demonstrating that hMSCs become activated and resemble carcinoma associated myofibroblasts upon prolonged exposure to conditioned medium from MDAMB231 human breast cancer cells.
Carcinoma-associated fibroblast-like differentiation of human mesenchymal stem cells.
No sample metadata fields
View SamplesGene expression profiles of primary lymphatic endothelial cells (LECs) isolated from human foreskin were analyzed after siRNA-mediated knockdown of control (firefly luciferase), Prox1, NR2F2 or Prox1/NR2F2 for 48 hours.
Prox1 physically and functionally interacts with COUP-TFII to specify lymphatic endothelial cell fate.
No sample metadata fields
View SamplesThe goal of the was to evaluate the mRNA expression profile of non-asthmatic and asthmatic airway smooth muscle. Overall design: RNA Seq was performed on nonasthmatic (n=5 individuals) and asthmatic (n=5 individuals) human airway smooth muscle cells.
Arhgef12 drives IL17A-induced airway contractility and airway hyperresponsiveness in mice.
Sex, Age, Specimen part, Disease, Subject
View SamplesBy transcriptome (RNA-Seq) analysis of PC-3 or DU145 prostate cancer cell lines over- or under-expressing NUSAP1, we determined genes that become differentially expressed upon expression changes of NUSAP1. Ingenuity Pathway Analysis revealed that the differentially expressed genes correlated with increased tumor progression and are involved in functions that include cancer, cellular movement, and cell morphology Overall design: Lentiviral infections were used to over- or under-express NUSAP1 or controls in triplicate in PC-3 or DU145 cell lines. Seventy-two or ninety-six hours after infection, total RNA was extracted and purified. The sequencing libraries were prepared with the TruSeq RNA Sample Preparation Kit v2 (Illumina) or TruSeq Stranded mRNA Sample Preparation Kit (Illumina) as directed by the manufacturer’s protocol. Pooled libraries were run on a Hiseq 2000 Sequencing System (Illumina) with 101 base pair single-end reads.
NUSAP1 promotes invasion and metastasis of prostate cancer.
Specimen part, Subject
View SamplesGenome-wide profiling of RNA differential expression in v-Abl transformed 220-8 pro-B mouse cell line Overall design: Expression profiles generated for 220-8 cell lines with and without hLIN28A retroviral transduction
Enhancement of LIN28B-induced hematopoietic reprogramming by IGF2BP3.
Cell line, Subject
View SamplesNuclear receptor (NR)-mediated transcription is a dynamic process that is regulated by the binding of distinct ligands that induce conformational changes in the NR. These molecular alterations lead to the recruitment of unique cofactors (coactivators or corepressors) that control the expression of NR-regulated genes. Here, we show that a stretch of proline residues located within the N-terminus of AR is necessary for maximal androgen-mediated prostate cancer cell growth and migration. Furthermore, this polyproline domain is necessary for the expression of a subset of AR-target genes, but is dispensable for classical AR-mediated gene transcription. Using T7 phage display, we subsequently identified a novel AR-interacting protein, SH3YL1, whose interaction with AR is dependent upon this polyproline domain. Like the AR polyproline domain, SH3YL1 was required for maximal androgen-mediated cell growth and migration. Microarray analysis revealed that SH3YL1 also regulated a subset of AR-modulated genes. Correspondingly, we identified ubinuclein1 (UBN1), a key member of a histone H3.3 chaperone complex, as a transcriptional target of AR/SH3YL1. Moreover, UBN1 was necessary for maximal androgen-mediated proliferation and migration. Collectively, our data link a specific surface located within ARs N-terminus to the recruitment of a novel cofactor, SH3YL1, which is required for the androgen-mediated expression of UBN1. Importantly, this signaling network was important for both androgen-mediated prostate cancer cell growth and migration. This work is significant because it could aid in the development of selective androgen receptor modulators (SARMs) and have therapeutic implications for AR-driven diseases.
Identification of a Novel Coregulator, SH3YL1, That Interacts With the Androgen Receptor N-Terminus.
Specimen part
View Samples