Caution in Choosing Reference Genes for Gene Expression Studies
Author Information
Author(s): Thorrez Lieven, Van Deun Katrijn, Tranchevent Léon-Charles, Van Lommel Leentje, Engelen Kristof, Marchal Kathleen, Moreau Yves, Van Mechelen Iven, Schuit Frans
Primary Institution: Katholieke Universiteit Leuven
Hypothesis
Are ribosomal protein genes suitable as reference genes for normalizing gene expression data across different tissues?
Conclusion
Ribosomal protein genes exhibit significant tissue-dependent variation in mRNA expression and should not be used as reference genes across all conditions.
Supporting Evidence
- Ribosomal protein genes were confirmed as housekeeping genes but showed significant expression variation across tissues.
- One- and two-way ANOVA revealed significant expression variation among ribosomal protein genes across different tissues.
- The study visualized tissue-dependent expression behavior of ribosomal protein genes using multidimensional unfolding analysis.
Takeaway
This study shows that ribosomal protein genes, which are often thought to be stable, actually change a lot between different tissues, so they might not be good for comparing gene expression.
Methodology
The study analyzed 70 microarrays representing 22 different tissues using statistical tools like ANOVA to assess expression stability of ribosomal protein genes.
Potential Biases
Potential bias in gene expression data due to tissue-specific artifacts or normalization procedures.
Limitations
The study primarily focuses on ribosomal protein genes and may not generalize to other types of genes.
Participant Demographics
Mice tissues were used for the analysis.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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