Abstract
Finding and characterizing mRNAs, their transcription start sites (TSS), and their associated promoters is a major focus in post-genome biology. Mammalian cells have at least 5-10 magnitudes more TSS than previously believed, and deeper sequencing is necessary to detect all active promoters in a given tissue. Here, we present a new method for high-throughput sequencing of 5' cDNA tags-DeepCAGE: merging the Cap Analysis of Gene Expression method with ultra-high-throughput sequence technology. We apply DeepCAGE to characterize 1.4 million sequenced TSS from mouse hippocampus and reveal a wealth of novel core promoters that are preferentially used in hippocampus: This is the most comprehensive promoter data set for any tissue to date. Using these data, we present evidence indicating a key role for the Arnt2 transcription factor in hippocampus gene regulation. DeepCAGE can also detect promoters used only in a small subset of cells within the complex tissue.
| Original language | English |
|---|---|
| Journal | Genome Research |
| Volume | 19 |
| Issue number | 2 |
| Pages (from-to) | 255-65 |
| Number of pages | 11 |
| ISSN | 1088-9051 |
| DOIs | |
| Publication status | Published - Feb 2009 |
| Externally published | Yes |
Keywords
- Animals
- Binding Sites
- Chromosome Mapping/methods
- Gene Expression
- Hippocampus/metabolism
- Mice
- Mice, Inbred C57BL
- Models, Biological
- Organ Specificity/genetics
- Promoter Regions, Genetic/genetics
- Protein Binding
- Sequence Analysis, DNA/methods
- Transcription Factors/metabolism
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