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Accession IconGSE2888

Gender differences in PAX and PAX-GRP samples

Organism Icon Homo sapiens
Sample Icon 28 Downloadable Samples
Technology Badge Icon Affymetrix Human Genome U133A Array (hgu133a)

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Description
The use of peripheral blood mononuclear cells (PBMC) for transcriptome analysis has already been proven valuable for assessing disease-associated and drug response related gene signatures. While these proof-of-principle studies have been critically important, the instability of RNA within PBMC prohibits their use in large scale multi-center trials for which samples have to be transported for a prolonged time prior RNA isolation. Therefore, a prerequisite for transcriptome analysis of peripheral blood in clinical trials will be a standardized and valid method to immediately stabilize the RNA profile after blood withdrawal. We demonstrate that the globin mRNA reduction method results in significantly improved data quality of stabilized RNA samples resulting in low intra-group variance and a detection rate of expressed genes similar to PBMC. More important, even small differences in gene expression such as observed between females and males were detected and sufficient to predict gender in whole blood samples.
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