Journal
ATLA-ALTERNATIVES TO LABORATORY ANIMALS
Volume 47, Issue 2, Pages 63-70Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0261192919862936
Keywords
A6 cells; in vitro; quantitative real-time polymerase chain reaction; reference genes
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Funding
- Research Foundation Flanders (FWO) [12E6616N, 1507119N]
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Quantitative real-time polymerase chain reaction is a widely used technique that relies on reference genes for the normalisation of gene expression. These reference genes are constitutively expressed and must remain stable across all samples and treatments. Stability of housekeeping genes may vary and must be optimised for a specific tissue, sample or cell line. Here we present a study screening for possible reference gene candidates, eef1a1, rpl8, sub1.L, clta, H4 and odc1, in the Xenopus laevis (A6) kidney cell line. Quantification cycle results were analysed using geNorm to calculate the average expression stability and the coefficient of variation (CV) for each candidate reference gene. All of the tested genes met the guidelines for stable reference genes, namely an average expression stability of < 0.5 and a CV value of < 0.2, with eef1a1 > sub1.L > rpl8 > clta > odd1 > H4. By using pairwise variation analysis, the optimal number of reference targets was determined to be 2. As such, we report that the reference genes eef1a1 and sub1.L should be used to achieve optimal normalisation in A6 cells.
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