Transcriptomics

Dataset Information

3

Gene expression and gene ontology analysis of the transcriptional changes occurring in spinal cord from the G93A SOD1 gene mutant rat


ABSTRACT: We have investigated the process of disease-induced functional perturbation and the related transcriptional changes occurring in thoraco-lumbar spinal cord extracted from Sprague-Dawley rats heterozygous for the G93A SOD1 gene mutation (Emerging Model 2148 Het Male, Taconic USA; Wyeth and Amyotrophic Lateral Sclerosis Association 2002) using spinal cord from wild type females littermates as reference tissues. Rats were obtained from a breeding project at Taconic Breeding Services (USA). We have applied large-scale gene expression analysis to define the pattern or transcriptional changes occurring in spinal cord from the G93A SOD1 rat model from a pre-symptomatic stage, at disease onset and at end-stage disease, using Bead Array analysis (Illumina, San Diego, USA). We have pooled spinal cord from N:5 transgenic rats for each of the time points considered, using the same pools of spinal cord from sex and age-matched WT rats as reference. In this specific project, the aim was to obtain a gene ontology (GO) pathway analysis of the transcriptional changes induced by the G93A SOD1 mutation in rat spinal cord. Hence, we have opted for a sample pooling strategy, well aware that in so doing, we would not obtaineed information about individuals genes variation across the samples in study but an overall view of the activation of multi-genes molecular signals. Total RNA was isolated from the spinal cords of mutant (G93A SOD1 gene mutation) female rats sacrificed at a pre-symptomatic stage (10-week old), at disease onset and at end stage disease and from age and sex-matched wild type (WT) littermates. RNA samples obtained from spinal cord extracted from rats of the same genetic types and sacrificed at the same time points (e.g. 5 RNA samples from mutant spinal cord from end-stage rats; 5 RNA samples from mutant spinal cord from rats at disease onset; 5 RNA samples from mutant pre-symptomatic rats and 5 RNA samples from spinal cord obtained from age-matched WT rats sacrificed at each of the 3 time points) were pooled and used for gene expression analysis and Ontology analysis of the expression profiles.

ORGANISM(S): Rattus norvegicus  

SUBMITTER: John V Priestley   Andrea Malaspina  ANDREA MALASPINA 

PROVIDER: E-GEOD-20894 | ArrayExpress | 2010-06-23

SECONDARY ACCESSION(S): GSE20894PRJNA124747

REPOSITORIES: GEO, ArrayExpress

Similar Datasets

2010-03-16 | GSE20894 | GEO
2010-06-05 | GSE22161 | GEO
2015-11-02 | E-GEOD-69166 | ArrayExpress
2016-01-08 | E-GEOD-69166 | ExpressionAtlas
2009-10-17 | GSE18597 | GEO
2009-10-17 | E-GEOD-18597 | ArrayExpress
2007-12-14 | E-GEOD-4390 | ArrayExpress
| GSE27933 | GEO
2013-03-01 | E-GEOD-27933 | ArrayExpress
2008-06-11 | E-GEOD-10953 | ArrayExpress