FANTOM5 CAGE profiles of human and mouse samples

Area of Science:

• Genomics
• Molecular Biology
• Transcriptomics

Background:

• Understanding transcription initiation is crucial for deciphering gene regulation.
• Previous methods lacked single base-pair resolution for mapping transcription start sites.

Purpose of the Study:

• To comprehensively map transcription initiation events across the human and mouse genomes.
• To quantify the frequencies of transcription initiation events in diverse cell types and conditions.

Main Methods:

• Utilized Cap Analysis of Gene Expression (CAGE) with single-molecule sequencing.
• Processed approximately 3,000 diverse samples using a uniform computational pipeline.
• Identified and annotated non-overlapping peaks representing transcription initiation sites.

Main Results:

• Mapped transcription initiation at single base-pair resolution for human and mouse genomes.
• Identified ~200,000 (human) and ~150,000 (mouse) transcription initiation peaks.
• Quantified activity of known and novel promoters across various cellular states.

Conclusions:

• The FANTOM5 dataset provides a high-resolution map of mammalian transcription initiation.
• This resource enables detailed analysis of transcriptional regulation in different biological contexts.
• Facilitates the discovery and characterization of novel regulatory elements.