Identification of suitable reference genes for real-time quantitative PCR analysis of hydrogen peroxide-treated human umbilical vein endothelial cells
BMC Molecular Biology(2017)
Abstract
Background Oxidative stress can induce cell injury in vascular endothelial cells, which is the initial event in the development of atherosclerosis. Although quantitative real-time polymerase chain reaction (qRT-PCR) has been widely used in gene expression studies in oxidative stress injuries, using carefully validated reference genes has not received sufficient attention in related studies. The objective of this study, therefore, was to select a set of stably expressed reference genes for use in qRT-PCR normalization in oxidative stress injuries in human umbilical vein endothelial cells (HUVECs) induced by hydrogen peroxide (H 2 O 2 ). Results Using geNorm analysis, we found that five stably expressed reference genes were sufficient for normalization in qRT-PCR analysis in HUVECs treated with H 2 O 2 . Genes with the most stable expression according to geNorm were U6 , TFRC, RPLP0, GAPDH, and ACTB , and according to NormFinder were ALAS1, TFRC, U6, GAPDH , and ACTB . Conclusion Taken together, our study demonstrated that the expression stability of reference genes may differ according to the statistical program used. U6, TFRC, RPLP0, GAPDH , and ACTB was the optimal set of reference genes for studies on gene expression performed by qRT-PCR assays in HUVECs under oxidative stress study.
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Key words
Hydrogen peraoxide,Human umbilical vein endothelial cells,qRT-PCR,Reference genes,Normalization
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