Barretts esophagus (BE) is a metaplastic precursor lesion of esophageal adenocarcinoma (EA), the most rapidly increasing cancer in western societies. While the prevalence of BE is increasing, the vast majority of EA occurs in patients with undiagnosed BE. Thus, we sought to identify genes that are altered in BE compared to the normal mucosa of the esophagus, and which may be potential biomarkers for the development or diagnosis of BE.
Global changes in gene expression of Barrett's esophagus compared to normal squamous esophagus and gastric cardia tissues.
Specimen part
View SamplesMesenchymal stromal cells (MSC) were isolated from human bone marrow. Here, we have compared gene expression profiles of MSC at early and late passages and upon stimulation with transforming growth factor beta 1 (TGF-b1). Stimulation was performed with 1ng/mL TGF-b1 for 1, 4, or 12 hours as indicated. The goal of this study was to determine if senescence-associated gene expression changes and TGF-b1 induced gene expression changes are related.
TGF-beta1 does not induce senescence of multipotent mesenchymal stromal cells and has similar effects in early and late passages.
Specimen part, Treatment, Subject
View SamplesMultipotent progenitors (MPP) and common dendritic cell progenitors (CDP) were obtained from mouse bone marrow, followed by in vitro culture with a specific cytokine cocktail and FACS sorting (Felker et al., 2010; Ser et al., 2012). Cells were treated with 10 ng/ml recombinant human TGF-1 (R&D Systems, Minneapolis, USA) for 2, 4, 8, 12 and 24 h as described (Felker et al., 2010) or left untreated.
TGF-β stimulation in human and murine cells reveals commonly affected biological processes and pathways at transcription level.
Specimen part
View SamplesWe here compared gene expression profiles in HepG2 cells upon stimulation with 1 ng/ml TGF-beta1 for 20 min, 1 hour, 2 hours, 4 hours, and 24 hours with untreated control cells. Experiments were done in three independent replicates. The goal of this study was to determine genes regulated by TGF-beta1.HepG2 cells were obtained from DSMZ (Braunschweig, Germany) and cell identity confirmed by STR profiling using the AmpFlSTR Identfiler Direct PCR Amplification kit (Life Technologies, Darmstadt, Germany). Gene expression profiles were compared at indicated time points after stimulation with TGF-beta (1 ng/ml) using the Human Gene 1.0 ST arrays (Affymetrix). In total 18 hybridizations are included in this series.
TGF-β stimulation in human and murine cells reveals commonly affected biological processes and pathways at transcription level.
Specimen part, Cell line, Time
View SamplesWe here compared gene expression profiles of primary murine hepatocytes (mPC) upon stimulation with 1 ng/ml TGF-beta1 for 20 min, 2 hours and 4 hours with untreated cells. Experiments were done in three independent replicates. The goal of this study was to determine genes regulated by TGF-beta1.
TGF-β stimulation in human and murine cells reveals commonly affected biological processes and pathways at transcription level.
Sex, Specimen part, Time
View Samples