Project description:This SuperSeries is composed of the following subset Series: GSE17823: Mouse cardiac tissue, polysomes and monosomes: Vehicle treated control vs. 15mg/kg doxorubicin GSE17826: Mouse cardiac tissue: Vehicle treated control vs. 15mg/kg doxorubicin GSE17830: Mouse cardiac tissue, polysomes and monosomes: Vehicle treated control vs. 25mg/kg DMNQ GSE17915: Mouse cardiac tissue: Vehicle treated control vs. 25mg/kg DMNQ Refer to individual Series
Project description:Translational profiling of mouse cardiac tissue treated with 15mg/kg doxorubicin in 10 ml/kg saline over an acute time course (0.5-120 hours) compared to time matched control animals treated with 10ml/kg saline. Two colour microarrays with time matched controls vs 15mg/kg doxorubicin cardiac tissue. Before microarray analysis, RNA is separated on a sucrose density gradient into those mRNAs activity undergoing translation (polysomes) and those not (monosomes) with control monosomes and treated monosomes on one set of arrays, and polysome control and polysome treated on another set of microarrays. Thealized Log2 of the monosomes was subtracted from the respective Log2 of the polysomes (on Series record). Time points studied were 0.5, 1, 2, 12, 24 and 120 hours following dosing, biological replicates n=3 independent animals at each time point, technical replicates (reverse labelling) n<1. One array printed onto two slides (A and B), one replicate per array.
Project description:Translational profiling of mouse cardiac tissue treated with 25mg/kg DMNQ in 10 ml/kg arachis oil over an acute time course (0.5-120 hours) compared to time matched control animals treated with 10ml/kg saline Two colour microarrays with time matched controls vs 25mg/kg DMNQ cardiac tissue. Before microarray analysis RNA separated on a sucrose density gradient into those mRNAs activitly undergoing translation (polysomes) and those not (monosomes) with control monosomes and treated monosomes on one set of arrays, and polysome control and polysome treated on another set of microarrays. The normalized Log2 of the monosomes was subtracted from the respective Log2 of the polysomes (on Series record). Time points studied were 0.5, 1, 2, 12, 24 and 120 hours following dosing, biological replicates n=3 independent animals at each time point, technical replicates (reverse labelling) n<1. One array printed onto two slides (A and B), one replicate per array.
Project description:Transcriptional profiling of mouse cardiac tissue treated with 15mg/kg doxorubicin in 10 ml/kg saline over an acute time course (0.5-120 hours) compared to time matched control animals treated with 10ml/kg saline.
Project description:Translational profiling of mouse cardiac tissue treated with 15mg/kg doxorubicin in 10 ml/kg saline over an acute time course (0.5-120 hours) compared to time matched control animals treated with 10ml/kg saline.
Project description:Liver samples were lysed (15 mM Tris-HCl (pH 8.0), 300 mM NaCl and 15 mM MgCl2, plus inhibitors (1 mg/ml heparin 100 µg/ml cycloheximide and 80 U RNAsin)), added to a 10-50% sucrose gradient and ultracentrifuged at 182,000x g for 2 hours. The gradient was aliquotted into 16 1ml fractions and added to Tri reagent (Sigma). RNA was extracted as per the manufacturer's instructions and then sub-pooled into fractions corresponding to monosomes, light polysomes, medium polysomes and heavy polysomes, according to ribosomal density (more ribosomal occupancy = higher translational activity = heavier, and therefore, located in the more dense fractions). Microarray analysis was performed by hybridising control (vehicle treated) monosomes against test (high-dose treated) monosomes on one microarray, control light polysomes against test light polysomes on a second microarray, and so forth for each sub-pool of fractions. Following microarray analysis there were a maximum of four values for each mRNA, corresponding to the proportional representation of that mRNA within each sub-pool of fractions. By calculating the change in values, i.e. degree of slope, across the monosomal region, the light polysomal region, the medium polysomal region and the dense polysomal region it was possible to determine any translational change in activity. In addition, the overall transcriptional change could be analysed for each mRNA. Dual colour microarrays performed on n = 3 samples, implementing a dye swap design. Control samples were treated with vehicle only. The treated samples had 1120mg/kg of the compound (Tetraethyl[(3-hydroxy-2-pyridyl)amino]-methanediphosphonate) for 15 days.
Project description:cea03-02_translatome-cd - translatome-cd - Is there a change in the translation in Cadmium stress condition ? - Comparison between translated RNA (polysomes) and total RNA or non translated RNA (monosomes) in cadmium stress conditions. Keywords: transcribed vs translated,treated vs untreated comparison