Functional and Evolutionary Considerations of Sense-Antisense Pairs in Mammals
Author Information
Author(s): Pedro AF Galante, Daniel O Vidal, Jorge E de Souza, Anamaria A Camargo, Sandro J de Souza
Primary Institution: Ludwig Institute for Cancer Research, São Paulo Branch
Hypothesis
What roles do natural antisense transcripts (NATs) play in gene expression regulation and evolution in mammals?
Conclusion
The study identifies a significant number of sense-antisense pairs in human and mouse genomes, suggesting that alternative polyadenylation and retroposition are key factors in their evolution.
Supporting Evidence
- Analysis revealed that at least 10,077 S-AS pairs exist in the human genome.
- Significant fraction of NATs were found to be artifacts from cDNA library construction.
- Alternative polyadenylation was shown to be a major factor in defining S-AS pairs.
- Retrocopies were identified as contributing to the formation of S-AS pairs.
Takeaway
Scientists found many pairs of genes that work in opposite ways in humans and mice, which might help control how genes are turned on and off.
Methodology
The study analyzed expressed sequences and massively parallel signature sequencing (MPSS) data to identify sense-antisense pairs in human and mouse genomes.
Potential Biases
There is a risk of bias due to the reliance on computational methods for identifying S-AS pairs, which may miss some true pairs.
Limitations
The study may underestimate the number of S-AS pairs due to reliance on available sequence data and potential artifacts from cDNA library construction.
Statistical Information
P-Value
p<0.003
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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