To investigate the specific gene expression program by which mutant-p53 and Pin1 control invasion and metastasis in breast cancer cells, we compared the transcriptomic profile of control, mutant-p53 depleted or Pin1 depleted MDA-MB-231 cells.
A Pin1/mutant p53 axis promotes aggressiveness in breast cancer.
Cell line
View SamplesThe estrogen-dependence of breast cancer has long been recognized, however, the role of 17-estradiol (E2) in cancer initiation was not known until we demonstrated that it induces complete neoplastic transformation of the human breast epithelial cells MCF-10F. E2-treatment of MCF-10F cells progressively induced high colony efficiency and loss of ductulogenesis in early transformed (trMCF) cells and invasiveness in Matrigel invasion chambers. The cells that
Epithelial to mesenchymal transition in human breast epithelial cells transformed by 17beta-estradiol.
No sample metadata fields
View SamplesComparison of acetylcholine receptor immunization between RIIIS/J and B10.RIII mice.
Periodic gene expression program of the fission yeast cell cycle.
Specimen part
View SamplesWe sought to elucidate the molecular mechanisms whereby LIN28B functions by comparing the gene expression profile of cells constitutively expressing LIN28B to empty vector controls.
LIN28B promotes colon cancer progression and metastasis.
Disease, Cell line
View SamplesWe have previously demonstrated older skin exhibits increased sterile inflammation 6 hours after saline-injection. In this work, we examined whether p38MAPK inhibitor in vivo would attenuate this non-specific inflammatory response towards saline in elder individuals (=65 years). Overall design: Skin mRNA profiles 6 hours after saline injection were studied before and after losmapimod treatment.
Enhancement of cutaneous immunity during aging by blocking p38 mitogen-activated protein (MAP) kinase-induced inflammation.
Specimen part, Treatment, Subject
View SamplesSkeletal muscle of insulin resistant individuals is characterized by lower fasting lipid oxidation and reduced ability to switch between lipid and glucose oxidation. The purpose of the present study was to examine if impaired metabolic switching could be induced by chronic hyperglycemia. Human myotubes were treated with or without chronic hyperglycemia (HG) (20 mmol/l glucose for 4 days), and the metabolism of [14C]oleic acid (OA) and [14C]glucose was studied. Acute glucose (5mmol/l) suppressed OA oxidation by 50% in normoglycemic (NG) (5.5 mmol/l glucose) cells. Myotubes exposed to chronic hyperglycemia showed a significantly reduced OA uptake and oxidation to CO2, whereas acid-soluble metabolites were increased. Glucose suppressibility, the ability of acute glucose to suppress lipid oxidation, was significantly reduced to 21%, while adaptability, the capacity to increase lipid oxidation with increasing fatty acid availability, was unaffected. Glucose uptake and oxidation was significantly reduced by about 40%. Substrate oxidation in presence of mitochondrial uncouplers showed that net and maximal oxidative capacities were significantly reduced after hyperglycemia, and the concentration of ATP was reduced by 25%. However, none of the measured mitochondrial genes were downregulated nor was mitochondrial content. Microarray showed that no genes were significantly regulated by chronic hyperglycemia. Addition of chronic lactate reduced both glucose and OA oxidation to the same extent as hyperglycemia, and this effect was specific for lactate. In conclusions, chronic hyperglycemia reduced substrate oxidation in skeletal muscle cells and impaired the metabolic switching. The effect is most likely due to an induced mitochondrial dysfunction.
Chronic hyperglycemia reduces substrate oxidation and impairs metabolic switching of human myotubes.
Specimen part
View SamplesIt is widely accepted that a womans lifetime risk of developing breast cancer at menopause is reduced by early full term pregnancy and multiparity. This phenomenon is associated with the development and differentiation of the breast, which ultimately imprints a specific genomic profile in the mammary epithelium. In the present work we demonstrate that this profile represents a permanent signature that could be associated with the breast cancer risk reduction conferred by pregnancy.
Defining the genomic signature of the parous breast.
No sample metadata fields
View SamplesTo begin to identify genes involved in the transdifferentiation process we analyzed Barretts esophagus (with no dysplasia), normal esophagus and small intestine biopsy samples by Affymetrix microarray.
Cdx1 and c-Myc foster the initiation of transdifferentiation of the normal esophageal squamous epithelium toward Barrett's esophagus.
No sample metadata fields
View SamplesThe aim of the present work was to study the effects of benfotiamine (S-benzoylthiamine O-monophosphate) upon glucose and lipid metabolism and gene expression in differentiated human skeletal muscle cells (myotubes) incubated for 4 days under normal (5.5 mM glucose) and hyperglycemic (20 mM glucose) conditions.
Benfotiamine increases glucose oxidation and downregulates NADPH oxidase 4 expression in cultured human myotubes exposed to both normal and high glucose concentrations.
Specimen part, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Differential roles for MBD2 and MBD3 at methylated CpG islands, active promoters and binding to exon sequences.
Specimen part, Cell line
View Samples