Transcription profiling of prostate tumor cell line AT1 inocculated into rats and then subjected to carbon ion or photon radiation
ABSTRACT: In the present study approximately 1 to 2 mm3 prostate tumor AT1 was inoculated subcutaneously in the right hind leg of adult male Copenhagen rats. When the tumor diameter exceeded 15 mm, tumors of 5 and 4 rats were irradiated with carbon ion radiation of 37 or 16Gy respectively. Tumors of 5 other rats were irradiated with photon radiation of 37Gy. One animal irradiated with 37 Gy carbon ion radiation and one animal irradiated with photon radiation was sacrificed 12h, 30h, 72h, 7d and 14d after irradiation respectively. One animal irradiated with 16 Gy photon radiation was sacrificed 12h, 60h, 7d and 14d after irradiation respectively. Non-irradiated animals were sacrificed at 60h time point. Tumors were dissected and frozen in liquid nitrogen immediately. Total RNA from tumor material was isolated using the NucleoSpin RNA L kit (#740962.20, Macherey-Nagel). Differential gene expression analysis was performed on the Agilent whole rat genome Oligo Microarray (44k) platform by comparative two dye hybridisation with dye-swaps.
Project description:Normal human dermal fibroblasts (NHDF) and human lung microvascular endothelial cells (HMVEC-L) were irradiated with iron ions (0, 0.2, 0.4 and 1 Gy, 1GEv/n) at Brookhaven National Labs (BNL). Aim of the study is to find differentially transcribed genes in dependance of radiation dose/source and cell type.
Project description:Normal human dermal fibroblasts (NHDF) and human lung microvascular endothelial cells (HMVEC-L) were irradiated with protons (0, 0.5, 1 and 2 Gy, 1GEv/n) at Brookhaven National Labs (BNL). Aim of the study is to find differentially transcribed genes in dependence of radiation dose/source and cell type.
Project description:Invasiveness of genetically modified cells is tested. Four cells lines (NIH3T3 untreated control; NIH-Ras positive control which is invasion +; NIH-MKK3actK4 and NIH-MKK3actATN, two constructs with MKK3 gene which shall be investigated for theit invasiveness). Cells on top as well as cells from bottom of separating membrane (those which had "invaded") form all 4 cell lines are collected and expression profiled. Aim is to find genes which are correlated to "invasion".
Project description:Acute kidney Injury (AKI) following open-heart surgery with cardiopulmonary bypass (CPB) is associated with an increased morbidity and mortality. The goal of this study is to explore patterns of gene expression in human AKI following CPB. This prospective observational study was approved by the Institutional Review Board Human Subjects Committee. Design and methods: Peripheral blood RNA samples were collected prospectively from a cohort of 30 patients at Caritas St. Elizabeths Medical Center in Boston, MA, undergoing CPB at time points immediately prior, and two and 24 hours following CPB. Gene expression patterns of four patients who developed AKI (cases) following CPB will be compared with six patients matched for clinical characteristics, who did not develop AKI (controls). AKI was defined by an incremental increase in serum creatinine of 30% within 72 hours following CPB. For peripheral blood RNA sampling, 2.5 ml of venous whole blood was collected into PAXgene Blood RNA Tube collection tubes (PreAnalytiX GmbH, Hombrechtikon, CH). Whole blood RNA was extracted with the PAXgene Blood RNA extraction Kit according to the manufacturers instructions (PAXgene RNA Kit Handbook, 06/2005). All biological samples are stored at 80° C.
Project description:Male C57B1/CBA mice were exposed to mainstream tobacco smoke (MTS) from two cigarettes daily, 5 days/week for 6 or 12 weeks. Mice were sacrificed immediately, or six weeks following, the last cigarette. High density DNA microarrays were used to characterize global gene expression changes in whole heart.<br><br>Western blot and ELISA assays were used to determine levels of Cyp1A1 protein in heart microsomes and total and active PAI-1 protein from tissue extracts.
Project description:To understand how metabolic and nutritional factors governing adaptation to the host niche contribute to the virulence of Aspergillus fumigatus we compared transcriptomes of developmentally matched A.fumigatus isolates following laboratory culture or initiation of infection in the neutropenic murine lung.