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MicroRNAs expression profile was acquired in 26 frozen FLs, 12 frozen rLNs, and in 2 CD4+ and 2 CD8+ pure T cell samples. The data were used to identify microRNAs differentially expressed between FLs of grade 1, 2, 3a and 3b and rLNs and between FLs and pure T cells.
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Background: In the diabetic heart the β-adrenergic response is altered partly by down-regulation of the β1-adrenoceptor, reducing its positive inotropic effect and up-regulation of the β3-adrenoceptor, increasing its negative inotropic effect. Statins have clinical benefits on morbidity and mortality in diabetic patients which are attributed to “pleiotropic” effects. The objective of our study was to investigate the role of statin treatment on β-adrenergic dysfunction in diabetic rat cardiomyocytes. Methods: β-adrenergic responses were investigated in vivo (echocardiography) and ex vivo (left ventricular papillary muscles) in healthy and streptozotocin-induced diabetic rats, who were pre-treated or not by oral atorvastatin over 15 days (50 mg.kg-1.day-1). Micro-array analysis and immunoblotting were performed in left ventricular homogenates. Data are presented as mean percentage of baseline ± SD. Results: Atorvastatin restored the impaired positive inotropic effect of β-adrenergic stimulation in diabetic hearts compared with healthy hearts both in vivo and ex vivo but did not suppress the diastolic dysfunction of diabetes. Atorvastatin changed the RNA expression of 9 genes in the β-adrenergic pathway and corrected the protein expression of β1-adrenoceptor and β1/β3-adrenoceptor ratio, and multidrug resistance protein 4 (MRP4). Nitric oxide synthase (NOS) inhibition abolished the beneficial effects of atorvastatin on the β-adrenoceptor response. Conclusions: Atorvastatin restored the positive inotropic effect of the β-adrenoceptor stimulation in diabetic cardiomyopathy. This effect is mediated by multiple modifications in expression of proteins in the β-adrenergic signaling pathway, particularly through the NOS pathway.
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WhiH is a transcription factor found in Streptomyces species. It has a role in sporulation in these bacteria. Although mutants in whiH are able to form aerial mycelia, these fail to differentiate into spores. The aim of this transcription profiling experiment was to measure genome wide transcript levels in the wild type and the whiH deletion mutant at 7 time points from 8 to 20 hours during the growth cycle of Streptomyces venezuelae.
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Profiling of bone marrow-derived erythroid progenitor cells at E1 (CFU-e), E2 (proerythroblasts), and E3 (maturing erythroblast) stages of development under stress erythropoiesis conditions and in response to EPO challenge. MACS-isolated E1, E2, and E3 stage EPCs were cultured in SP34ex media for 6 hrs in the absence of hematopoietic growth factors and the presence of insulin (to enforce survival and anti-apoptotic effects) and then exposed to rhEPO for 90 minutes. Gene expression analysis was performed using Affymetrix Mouse Genome 430 2.0 arrays; microarray data were analyzed using Bioconductor for R.
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All living cells are constantly exposed to a number of physical forces. The study aims to investigate the response of fibroblasts to dynamic mechanical forces.This experiment captures the expression data obtained by performing microarray based analysis on dermal fibroblasts subjected to 75 and 150 µl/min fluid flow rate.
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hiPSC were derived from fibroblasts of two patients carrying a heterozygous mutation in the SAMD9 gene. The patients have a multisystem disorder of intrauterine growth restriction (IUGR) with gonadal, adrenal and bone marrow failure and high mortality. To examine a potential influence of the SAMD9 mutation on cell differentiation hiPSC were differentiated towards intermediate mesoderm, from which can further differentiate to adrenal gland in normal human development. Gene expression profiles of undifferentiated and differentiated cells were analysed and compared to iPSC lines derived from normal donors.
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The aim was to investigate the functional role of PLA2G7 in breast cancer using transient PLA2G7 silencing in cultured breast cancer cells. For transient knockdown of PLA2G7, siRNA (SI00072177; siPLA2G7, Qiagen, Valencia, CA) was transfected to MDA-MB-468 cells and incubated 48 hours before genome-wide gene expression analysis. Gene expression profiles of the PLA2G7 silenced samples were compared with the scrambled control treated samples and two replicate samples were studied for each treatment.
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The aim was to investigate the functional role of PLA2G7 in breast cancer using PLA2G7 silencing in cultured breast cancer cells. For stable knockdown of PLA2G7, shRNAs were transduced to MDA-MB-468 cells before genome-wide gene expression analysis. Gene expression profiles of the PLA2G7 silenced samples were compared with the scrambled control treated samples and two replicate samples were studied for each treatment.
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Sinorhizobium meliloti is a soil-dwelling symbiotic alphaproteobacterium. Cyclic di-GMP is an important second messenger controlling multiple functions in this microorganism. To understand transcriptional regulation by elevated c-di-GMP in S. meliloti, the transcriptome analysis was performed on the wild type strain S. meliloti Rm2011 carrying either an empty vector pWBT or diguanylate cyclase gene pleD overexpression plasmid pWBT-pleD.
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Patients affected by stage IV melanoma were subjected to a first round of DC vaccination in two centres, then PBMCs were extracted and mRNA analysed using Illumina arrays for identifying signals related to a favourable outcome of the therapy in terms of survival. A panel of candidate markers was further verified by real time PCR on PBMCs from patients treated with the same vaccination protocol in additional centres. This multi-centric study allowed to identify the gene PEBP1 as a candidate biomarker for vaccination positive outcome. The data released here was used to derive the first panel of markers.
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