Related Experiment Video
Updated: Jun 5, 2026
08:56
Detection of microRNA Expression in Peritoneal Membrane of Rats Using Quantitative Real-time PCR
Published on: June 27, 2017
Selection of reference genes for gene expression studies in rats
Roberto Martínez-Beamonte1, María A Navarro, Ana Larraga
1Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación Sanitaria de Aragón-Universidad de Zaragoza, Spain.
Journal of Biotechnology
|January 12, 2011
Summary
Selecting stable reference genes is crucial for accurate RT-PCR gene expression analysis. The BestKeeper method proved most reliable, identifying specific genes for different rat tissues and experimental conditions.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Accurate gene expression analysis via RT-PCR relies on stable reference genes.
- Inadequate reference gene selection can lead to erroneous experimental outcomes.
Purpose of the Study:
- To evaluate 17 commonly used reference genes for stability in rat tissues (duodenum, jejunum, ileum, liver).
- To compare four different statistical strategies for selecting the most suitable reference gene.
- To validate reference gene selection for specific experimental designs and tissues.
Main Methods:
- Analysis of 17 reference genes in Wistar rat tissues after fat gavage and at two time points.
- Testing reference genes in Zucker rat liver under long-term dietary conditions.
- Utilizing four selection strategies: biological coefficient of variation, geNorm, NormFinder, and BestKeeper.
Main Results:
- No single reference gene was optimal across all tissues and conditions.
- Different statistical methods yielded varying results for gene stability.
- The BestKeeper program provided the most reliable gene selection outcomes.
- Specific optimal reference genes identified: Tbp (duodenum), Ubc (jejunum), Hprt (ileum), and Rn18s (liver).
Conclusions:
- Reference gene selection is tissue- and experiment-specific.
- The BestKeeper method is highly recommended for identifying stable reference genes.
- Validation of chosen reference genes is essential for reliable RT-PCR data interpretation.
