Please note that we have stopped the regular imports of Gene Expression Omnibus (GEO) data into ArrayExpress. This may not be the latest version of this experiment.
E-GEOD-27041 - OXPHOS complex I deficiency leads to transcriptional changes of the Nrf2-Keap1 pathway and selenoproteins
Released on 1 November 2011, last updated on 14 November 2011
Defective complex I (CI) is the most common type of oxidative phosphorylation (OXPHOS) disease in patients, with an incidence of 1 in 5,000 live births. Complex I deficiency can present in infancy or early adulthood and shows a wide variety of clinical manifestations, including Leigh syndrome, (cardio)myopathy, hypotonia, stroke, ataxia and lactic acidosis. A number of critical processes and factors, like superoxide production, calcium homeostasis, mitochondrial membrane potential and mitochondrial morphology, are known to be involved in clinical CI deficiency, but not all factors are yet known and a complete picture is lacking. Therefore, whole genome gene expression profiling was performed in fibroblasts of CI deficient patients and controls, comparing glycolytic and oxidative conditions. Linear regression and pathway analysis identified a number of key adaptive processes. Fibroblasts were derived from skin biopsies of five patients homozygous or compound heterozygous for nuclear complex I mutations and five controls. The groups were matched for age and sex.
transcription profiling by array
An M Voets, Anne M Leenders, Hubert J Smeets, Jan A Smeitink, John J Esseling, Merei Huigsloot, Patrick J Lindsey, Peter Willems, Richard J Rodenburg, Werner Koopman