Gene expression analyses based on
messenger RNA (
mRNA) expression require accurate datanormalization. When using endogenous reference
genes, these have to be carefully validated. Validated reference
genes vary greatly depending on
tissue,
cell subsets and experimental context.The aim of this study was to identify reference
genes that present more stable
mRNA levels amongindividuals in
peripheral blood mononuclear cells (PBMC); fresh
skin biopsies;
lung and brainautopsies as well as,
skin biopsies formalin-fixed
paraffin-embedded (FFPE). Therefore, 6endogenous reference
genes were evaluated by
quantitative real-time polymerase chain reaction 18SrRNA,
glyceraldehyde-3-phosphate dehydrogenase (GAPDH),
TATA box-
binding protein (TBP),beta-2-microbolin (B2M),
ubiquitin C (UBC) and mitochondrially encoded
ATP synthase 6 (MTATP6).Furthermore, validation of their stability and suitability as reference
genes was determined bythe geNorm program. The results show that in PBMC and fresh
skin biopsies, TBP and UBC wereidentified as the most stable, while in FFPE
lung autopsies and
skin biopsies, GAPDH and B2M, andin FFPE
brain autopsies, GAPDH and UBC turned out to be the most stable...