Journal
PLACENTA
Volume 29, Issue 9, Pages 798-801Publisher
W B SAUNDERS CO LTD
DOI: 10.1016/j.placenta.2008.06.007
Keywords
housekeeping genes; fetal growth restriction; gene expression; placenta
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Comparative gene expression Studies in the placenta may provide insights into molecular mechanisms of important genomic alterations in pregnancy disorders. Endogenous reference genes often referred to as housekeeping genes, are routinely used to normalise gene expression levels. For this reason, it is important that these genes be empirically evaluated for stability between placenta] samples including samples from complicated pregnancies. To address this issue, six candidate housekeeping genes including several commonly Used ones (ACTB, CAPDH, 18S rRNA, TBP, SDHA and YWHAZ) were investigated lot their expression stability in placentae obtained from pregnancies complicated by idiopathic FGR (it 25) and gestation-matched control pregnancies (n - 25). Real-time PCR was performed using pre-validated gene expression assay kits. The geNorrn program was used for gene stability measure (M) for the entire housekeeping genes in all control and FGR-affected placental samples. Results showed that GAPDH and 18S rRNA were most stable, with an average expression stability of M = 0.441 and 0.443, respectively, followed by YWHAZ (M = 0.472). SDHA, ACTB and TBP were the least stable housekeeping genes (M = 0.495, 0.548 and 1.737, respectively). We recommend geometric averaging of two or more housekeeping genes to determine relative gene expression levels between FGR-affected and control placentae. (C) 2008 Elsevier Ltd. All rights reserved.
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