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Genome-wide mRNA expression analysis of the impact of electron radiation on Daltons lymphoma ascites cells in vivo

ABSTRACT: The gene expression changes induced upon electron radiation in cancer cells is largely unexplored. We investigated the effect of electron radiation generated from 8 MeV Microtron in Daltons lymphoma ascites (DLA) cells bearing mice model. Mice implanted with DLA cells in their peritoneal cavity were exposed to 2 Gy dose of electron radiation. 48 Hours after irradiation, tumor cells were harvested from peritoneal cavity of both treatment-naive and total body irradiated mice. Microarray based genome-wide mRNA profiling approach was used to identify the differentially expressed genes between control and treated groups. 249 genes were found altered in DLA cells upon electron irradiation, of which 176 genes were upregulated and 73 genes were downregulated. The microarray results from this study were validated using reverse transcriptase PCR (RT-PCR) for selected candidate genes. In summary, total body irradiation with 8 MeV electrons has potential to inhibit the tumor cell proliferationin in vivo lymphoma model with the changes in specific signaling pathways and gene expression. Mice implanted with DLA cells in their peritoneal cavity were exposed to 2 Gy dose of electron radiation. Total RNA was isolated from DLA cells retrieved from control (treatment-naive) and irradiated mice (2 Gy) at 48 hours after radiation exposure.

ORGANISM(S): Mus musculus

SUBMITTER: Kumaresan Ganesan

PROVIDER: E-GEOD-44908 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Genome-wide mRNA expression analysis of the impact of electron radiation on Daltons lymphoma ascites cells in vivo

Project description:The gene expression changes induced upon electron radiation in cancer cells is largely unexplored. We investigated the effect of electron radiation generated from 8 MeV Microtron in Daltons lymphoma ascites (DLA) cells bearing mice model. Mice implanted with DLA cells in their peritoneal cavity were exposed to 2 Gy dose of electron radiation. 48 Hours after irradiation, tumor cells were harvested from peritoneal cavity of both treatment-naive and total body irradiated mice. Microarray based genome-wide mRNA profiling approach was used to identify the differentially expressed genes between control and treated groups. 249 genes were found altered in DLA cells upon electron irradiation, of which 176 genes were upregulated and 73 genes were downregulated. The microarray results from this study were validated using reverse transcriptase PCR (RT-PCR) for selected candidate genes. In summary, total body irradiation with 8 MeV electrons has potential to inhibit the tumor cell proliferationin in vivo lymphoma model with the changes in specific signaling pathways and gene expression.

2013-03-05 | GSE44908 | GEO

mRNA expression analysis of radiation-induced skin fibrosis of rats

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DNA methylation analysis of radiation-induced skin fibrosis of rats

Project description:This study aims to compared the genome-wide DNA methylation status in radiation-induced fibrotic skin and adjacent normal tissues of rats by methylated DNA immunoprecipitation sequencing (MeDIP-Seq). Male Sprague-Dawley (SD) rats (4 weeks old) were irradiated with a single 45-Gy dose of irradiation was administered to the treatment area at a rate of 750 cGy/min using a 6-MeV electron beam accelerator (Clinac 2100EX, Varian Medical Systems, Inc., CA). Skin tissues from nonirradated skin areas and irradietd areas were collected and subjected to DNA methylation analysis by MeDIP.

2018-07-13 | GSE116747 | GEO

ChIP-Sequencing analysis of YY1 binding DNA in radiation-induced skin fibrosis of rats

Project description:This study aims to compared the genome-wide Ying Yang-1 (YY1) binding DNA sequences in radiation-induced fibrotic skin and adjacent normal tissues of rats by ChIP-Seq. Male Sprague-Dawley (SD) rats (4 weeks old) were irradiated with a single 45-Gy dose of irradiation was administered to the treatment area at a rate of 750 cGy/min using a 6-MeV electron beam accelerator (Clinac 2100EX, Varian Medical Systems, Inc., CA). Skin tissues from nonirradated skin areas and irradietd areas were collected and subjected to ChIP of YY1.

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Differentially expressed RNAs in the skin tissue of IRF1 knockout mice following radiation

Project description:This study aims to compared RNA expression profiles between the skin tissues of IRF1 knockout (IRF-/-) mice and wild-type mice by microarray analysis. Male IRF1 knockout (IRF-/-) mice and wild-type mice (8 weeks old) were irradiated with a single 35-Gy dose of irradiation was administered to the treatment area at a rate of 750 cGy/min using a 6-MeV electron beam accelerator (Clinac 2100EX, Varian Medical Systems, Inc., CA). Skin tissues from irradiated areas were collected and subjected to RNA expression analysis.

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RNA-seq of irradiated intestinal organoid-derived subcutaneous heterotopic tumours and non-irradiated controls

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Effects of irradiation on mouse lung

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2009-09-11 | E-GEOD-2250 | biostudies-arrayexpress

Fractionated Proton Irradiation does not Impair Hippocampal Dependent Short Term or Spatial Memory in Female Mice

Project description:The environment outside the Earth’s protective magnetosphere is a much more threatening and complex space environment. The dominant causes for radiation exposure, solar particle events and galactic cosmic rays, contain high-energy protons. In space, astronauts need healthy and highly functioning cognitive abilities, of which the hippocampus plays a key role. Therefore, understanding the effects of 1H exposure on hippocampal-dependent cognition is vital for de-veloping mitigative strategies and protective countermeasures for future missions. To investi-gate these effects, we subjected 6-month-old female CD1 mice to 0.75 Gy fractionated 1H (250 MeV) whole-body irradiation at the NASA Space Radiation Laboratory. The cognitive perfor-mance of the mice was tested 3 months after irradiation using Y-maze and morris water maze tests. Both sham-irradiated and 1H-irradiated mice significantly preferred exploration of the novel arm compared to the familiar and start arms, indicating intact spatial and short-term memory. Both groups statistically spent more time in the target quadrant, indicating spatial memory retention. There were no significant differences in neurogenic and gliogenic cell counts after irradiation. In addition, proteomic analysis revealed no significant upregulation or down-regulation of proteins related to behavior, neurological disease, or neural morphology. Our data suggests 1H exposure does not impair hippocampal-dependent spatial or short-term memory in female mice.

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Effects of irradiation on mouse lung

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Radiation Induced Pulmonary Fibrosis as a Model of Progressive Fibrosis: Contributions of DNA Damage, Inflammatory Response and Cellular Senescence Genes

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